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Diverse layer between spherical core and cover

Subclass of:

473 - Games using tangible projectile

473131000 - GOLF

473351000 - Ball

473371000 - Particular unitary or layered construction

473372000 - Containing metal

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DocumentTitleDate
20130029787MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and an outer layer which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is made of an elastomer. The envelope layer is formed of an inner envelope layer and an outer envelope layer, and the intermediate layer is formed of an inner intermediate layer and an outer intermediate layer. The outer layer has a hardness which is higher than the average core hardness, and each of the envelope layers and the intermediate layers is softer than the outer layer.01-31-2013
20130029786Golf Ball Including A Blend Of Highly Neutralized Acid Polymers And Method Of Manufacture - A golf ball having an inner core layer, an outer core layer enclosing the inner core layer, and a cover layer enclosing the outer core layer. The inner core layer includes a blend of a first highly neutralized acid polymer having a first Vicat softening temperature and a first specific gravity, a second highly neutralized acid polymer having a second Vicat softening temperature and a second specific gravity, and an ionomer-based masterbatch comprising an additive and an ionomer resin having a third Vicat softening temperature and a third specific gravity. The absolute values of the differences among the Vicat softening temperatures is no more than about 15° C. and the absolute value of the difference between the specific gravities is no more than about 0.015. The cover layer may include an inner cover layer enclosing the outer core layer and an outer layer enclosing the inner cover layer.01-31-2013
20130029785MULTI-LAYERED CORES HAVING SELECTIVE WEIGHT DISTRIBUTION FOR GOLF BALLS - Multi-piece golf balls containing a multi-layered core or a dual-core are provided. The cores have selective weighting configurations (SWC). Particularly, the core layers are made of different compositions having different specific gravity levels or densities. Preferably, rubber and high neutralized ethylene acid copolymer compositions are used to form at least one layer in the core. The rubber and ionomer compositions may be loaded with fillers to adjust the specific gravity levels. The moment of inertia of the ball is adjusted and the resulting ball has good resiliency and spin control properties.01-31-2013
20110207555MULTIPLE-PIECE GOLF BALL - A multiple-piece golf ball includes a core positioned at the center of the golf ball; an intermediate layer surrounding the core; a cover further surrounding the intermediate layer; at least one high specific gravity member having a higher specific gravity than the core, the intermediate layer and the cover. The at least one high specific gravity member is arranged such that a moment of inertia of the golf ball with respect to an x-axis Ix and a moment of inertia of the golf ball with respect to a y-axis Iy are substantially the same, a moment of inertia of the golf ball with respect to a z-axis Iz is smaller than Ix and Iy, and the difference between Iz and Ix or Iy is at least approximately 3. The x-axis, y-axis, and z-axis intersect orthogonally at the center of the golf ball.08-25-2011
20090042668Use of Nucleating Agents to Increase the Flexural Modulus of Ionomers - A golf ball composition having a copolymer with an acid content modified by a nucleating agent is described. The nucleating agent modifies the flexural modulus of the acid copolymer.02-12-2009
20100041496HIGHLY-NEUTRALIZED ACID POLYMER COMPOSITIONS HAVING A LOW MOISTURE VAPOR TRANSMISSION RATE AND THEIR USE IN GOLF BALLS - The present invention provides golf balls comprising a low specific gravity intermediate layer formed from a moisture resistant composition and disposed between a core and a cover. Depending on the thickness and specific gravity of the various layers, among other factors, the moment of inertia of the golf balls can be high or low.02-18-2010
20120184395MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, an intermediate layer encasing the core, and a cover layer which encases the intermediate layer and has a plurality of dimples on an outer surface thereof. The intermediate layer is formed primarily of a material which includes specific amounts of a fatty acid and/or fatty acid derivative having a molecular weight of from 228 to 1500 and a basic inorganic metal compound capable of neutralizing un-neutralized acid groups per 100 parts by weight of a resin component composed primarily of a specific olefin-unsaturated carboxylic acid copolymer, and in which at least 82 mol % of acid groups in the above components are neutralized. The cover layer is formed of a thermoplastic resin composed primarily of an ionomer resin, and has a Shore D hardness of from 50 to 85. This invention makes it possible to achieve both an increased distance owing to a reduced spin rate, and also an improved durability.07-19-2012
20100009776GOLF BALL - An object of the present invention is to provide a golf ball having an excellent properties like flight distance and low temperature durability. The present invention provides a golf ball comprising: a core consisting of a center and one or more intermediate layers covering the center; and a cover covering the core, wherein at least one piece or one layer of said intermediate layers is formed from a highly elastic intermediate layer composition that contains (A) a highly elastic polyamide resin having a flexural modulus in a range from 700 MPa to 5,000 MPa; (B) a metal-neutralized product of ethylene-(meth)acrylic acid copolymer and (C) a resin having a polar functional group in a specific way.01-14-2010
20090191981POLYALKENAMER COMPOSITIONS AND GOLF BALLS PREPARED THEREFROM - A golf ball that includes (a) a core comprising a center; (b) an outer cover layer; and (c) one or more intermediate layers; wherein at least one of the core, the outer cover layer, or the intermediate layer comprises a composition that includes (i) at least one polyalkenamer and at least one polyamide or (ii) at least one polyalkenamer. A method for making a golf ball comprising a core, one or more intermediate layers and an outer cover layer is also disclosed, wherein the method includes forming a blend comprising at least one polyalkenamer rubber and at least one polyamide; and injection molding the blend into a spherical mold to form the intermediate or outer cover layer. Also disclosed is a polymer composition that includes at least one polyalkenamer and at least one thermoplastic copolyamide elastomer.07-30-2009
20100081517MULTI-LAYER GOLF BALL - Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises at least one intermediate core layer formed from a metallic, composite, or inorganic/organic hybrid composition.04-01-2010
20130085014GOLF BALL - An object of the present invention is to provide a resin composition for the golf ball that suppresses the bleed out of the low molecular weight material component, as well as improves the fluidity and repulsion performance. The present invention provides a golf ball forming resin composition comprising as a resin component, (A) a high melt viscosity resin; (B) a low melt viscosity ionomer resin having a melt viscosity (190° C.) ranging from 1 Pa·s to 10 Pa·s measured by a brookfield viscometer, in a ratio of (A) the high melt viscosity resin/(B) the low melt viscosity ionomer resin being 55 mass % to 99 mass %/45 mass % to 1 mass %; and (C) a metal ion source capable of neutralizing carboxyl groups of (A) the high melt viscosity resin and (B) the low melt viscosity ionomer resin, in an amount of from 0.1 part to 10 parts with respect to 100 parts by mass of a sum of (A) the high melt viscosity resin and (B) the low melt viscosity ionomer resin.04-04-2013
20100029410GOLF BALLS COMPRISING HIGHLY-NEUTRALIZED ACID POLYMERS - A golf ball includes a dual core having an Atti compression of 70 or less and a diameter of 0.5 to 1.55 inches. An inner core and outer core are formed from a thermoset rubber composition and have a first and second hardness, respectively. An inner cover layer including an ionomer and having a hardness of 40 to 70 Shore D and being greater than the first hardness by at least 10 Shore D and an intermediate layer formed from a polymer neutralized by an organic acid or a salt thereof, and sufficient cation source present in an amount sufficient to neutralize the polymer by 80% or greater, are disposed between the core and an outer cover, which is formed from a polyurethane and having a thickness of 0.04 inches or less and a hardness of 55 Shore D or less.02-04-2010
20090124416Dual Core Golf Ball having Negative-Hardness-Gradient Thermoplastic Inner Core and Steep Positive-Hardness-Gradient Thermoset Outer Core Layer - A golf ball comprising a thermoplastic inner core layer that has a geometric center hardness greater than its surface hardness to define a “negative” hardness gradient. An outer core layer is disposed about the inner core and is formed from a substantially homogenous thermoset composition, typically rubber, and has an inner surface hardness substantially less than its outer surface hardness to define a “positive” hardness gradient. An inner cover layer is disposed about the outer core layer and an outer cover layer is disposed about the inner cover layer. The “negative” hardness gradient of the inner core is typically −1 to −5 Shore C and the “positive” hardness gradient of the core layer is typically at least 25 Shore C. The difference between the inner core surface hardness and the outer core inner surface hardness, Δh, should be at least 25 Shore C.05-14-2009
20090124415Dual Core Golf Ball having Negative-Hardness-Gradient Thermoplastic Inner Core and Shallow Negative-Hardness-Gradient Outer Core Layer - A golf ball comprising a thermoplastic inner core layer that has a geometric center hardness greater than its surface hardness to define a first “negative” hardness gradient. An outer core layer is disposed about the inner core and is formed from a substantially homogenous thermoset composition, typically rubber, and has an inner surface hardness greater than its outer surface hardness to also define a “negative” hardness gradient. An inner cover layer is disposed about the outer core layer and an outer cover layer is disposed about the inner cover layer. The “negative” hardness gradient of the inner core is typically −1 to −5 Shore C and the “negative” hardness gradient of the core layer is typically at least −1 Shore C but less than −7 Shore C. The difference between the inner core surface hardness and the outer core inner surface hardness, Δh, should be at least −3 Shore C.05-14-2009
20090124414Dual Core Golf Ball having Negative-Hardness-Gradient Thermoplastic Inner Core and Steep Negative-Hardness-Gradient Outer Core Layer - A golf ball comprising a thermoplastic inner core layer that has a geometric center hardness greater than its surface hardness to define a first “negative” hardness gradient. An outer core layer is disposed about the inner core and is formed from a substantially homogenous thermoset composition, typically rubber, and has an inner surface hardness greater than its outer surface hardness to also define a “negative” hardness gradient. An inner cover layer is disposed about the outer core layer and an outer cover layer is disposed about the inner cover layer. The “negative” hardness gradient of the inner core is typically −1 to −5 Shore C and the “negative” hardness gradient of the core layer is typically at least −7 Shore C. The difference between the inner core surface hardness and the outer core inner surface hardness, Δh, should be at least −3 Shore C.05-14-2009
20130053180GOLF BALL - A golf ball 02-28-2013
20100273575MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is formed primarily of a rubber material and has a hardness which gradually increases from a center to a surface thereof, the hardness difference in JIS-C hardness units between the core center and the core surface being at least 15 and, letting (I) be the average value for cross-sectional hardnesses at a position about 15 mm from the core center and at the core center and letting (II) be the cross-sectional hardness at a position about 7.5 mm from the core center, the hardness difference (I)−(II) in JIS-C units being not more than ±2. The envelope layer, intermediate layer and cover have hardnesses which satisfy the condition:10-28-2010
20100273576THERMOPLASTIC CORE HAVING A HARDNESS GRADIENT FORMED FROM A GRADIENT-INITIATING SOLUTION - A golf ball including a thermoplastic core having an outer diameter of 1.51 inches to 1.59 inches; an outer cover layer; and an inner cover layer between the core and the outer cover layer. The thermoplastic core has been exposed to a gradient-initiating solution comprising a solvent, free radical initiator, and a reactive co-agent comprising a metal salt of an acrylic or methacrylic acid, a mono- or multi-functional acrylate or methacrylate, or having the chemical structure10-28-2010
20090247323GOLF BALLS CONTAINING HIGHLY-NEUTRALIZED ACID POLYMER BLENDS - A golf ball having a core, a cover layer, and an optional intermediate layer disposed between the core and the cover layer is disclosed and described. One or more of the core, the cover layer, or the intermediate layer is formed of a highly neutralized polymer blend of an acid copolymer and a metallocene-catalyzed copolymer, an olefinic block copolymer, a sufficient amount of a suitable cation source and a fatty acid or salt of a fatty acid. The highly neutralized polymer blend is neutralized from 80% to 100% while still retaining processability. Further, the core can have a diameter of 0.5 inches to about 1.62 inches and an Atti compression less than or equal to 105. The cover layer can have a material hardness between about 30 and 70 Shore D.10-01-2009
20110014998DUAL CORE GOLF BALL HAVING NEGATIVE-HARDNESS-GRADIENT THERMOPLASTIC INNER CORE AND STEEP POSITIVE-HARDNESS-GRADIENT THERMOSET OUTER CORE LAYER - A golf ball comprising a thermoplastic inner core layer that has a geometric center hardness greater than its surface hardness to define a “negative” hardness gradient. An outer core layer is disposed about the inner core and is formed from a substantially homogenous thermoset composition, typically rubber, and has an inner surface hardness substantially less than its outer surface hardness to define a “positive” hardness gradient. An inner cover layer is disposed about the outer core layer and an outer cover layer is disposed about the inner cover layer.01-20-2011
20110014997GOLF BALL WITH MULTIPLE COVER LAYERS - A golf ball having a core and two or more cover layers, wherein the multiple cover layers are formed from materials that are substantially the same composition with the same Shore hardness, but are modified in some way to alter the processing or performance characteristics of the golf ball, or the layers have the same hardness and at least one cover layer is formed of a polymer blend including a polyurethane composition, and at least one cover layer is formed of a different polymer blend.01-20-2011
20090270201COMPOSITIONS COMPRISING AN AMINO TRIAZINE AND IONOMER OR IONOMER PRECURSOR - Disclosed embodiments concern using at least one triazine, typically an amine or polyamine triazine (referred to as amino triazines), in combination with at least one ionomer or ionomer precursor to form compositions useful for making sporting equipment, such as golf ball components. The ionomer or ionomer precursor typically includes plural acid functional groups, such as carboxyl or carboxylate groups, that react or form salts with the amino triazine. Specific examples, without limitation, of suitable amino triazines include guanamine, 6-methyl-1,3,5-triazine-2,4-diamine (acetoguanamine), 6-nonyl-1,3,5-triazine-2,4-diamine (nonylguanamine), 6-phenyl-1,3,5-triazine-2,4-diamine (benzoguanamine) and 2,4,6-triamino-triazine (melamine).10-29-2009
20130065707GOLF BALL - A golf ball 03-14-2013
20090011860Highly-Neutralized Thermoplastic Copolymer Center for Improved Multi-Layer Core Golf Ball - A golf ball includes an inner core layer formed from a first rubber composition having a first Shore D hardness; an intermediate core layer formed from a second rubber composition; and a thermoplastic outer core layer having a second Shore D hardness. The outer core layer includes a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer. An inner cover layer surrounds the multi-layer core and an outer cover layer is disposed about the inner cover layer. The inner core layer hardness differs from the outer core hardness by at least 10 points.01-08-2009
20090011859Negative Hardness Gradient Inner Core for Dual Core Golf Ball - A golf ball includes an inner core having a first outer surface and a geometric center and is formed from a first substantially homogenous formulation throughout such that the inner core has a hardness of 30 Shore C to 45 Shore C. An outer core layer is formed around the inner core and has a second outer surface and an inner surface and is formed from a second substantially homogenous formulation throughout such that the outer core layer has a hardness of 60 Shore C to 95 Shore C. A cover layer is formed around the outer core layer. The hardness of the first outer surface is lower than the hardness of the geometric center to define a negative hardness gradient, and the hardness of the second outer surface is greater than the hardness of the inner surface to define a positive hardness gradient.01-08-2009
20090011858HIGHLY NEUTRALIZED POLYMER MATERIAL WITH HEAVY MASS FILLERS FOR A GOLF BALL - Disclosed herein is novel thermoplastic material and a golf ball utilizing the thermoplastic material. The golf ball (01-08-2009
20090011857Golf Ball with Negative Hardness Gradient Core - A golf ball including an inner core having a first outer surface and a geometric center, the inner core having a hardness of 35 to 55 Shore C; an outer core layer adjacent the inner core having a second outer surface and an inner surface, the outer core layer having a hardness of 55 to 90 Shore C; and a cover layer; wherein the hardness of the first outer surface is substantially the same as or lower than the hardness of the geometric center to define a first negative hardness gradient, and the hardness of the second outer surface is substantially the same as or lower than the hardness of the inner surface to define a second negative hardness gradient.01-08-2009
20130165264MULTI-LAYER GOLF BALL CONSTRUCTION - Disclosed herein is a six piece golf ball wherein each part of the golf ball has certain characteristics.06-27-2013
20100216571MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a specific, highly neutralized, ionomeric resin composition, has a diameter of from 10 to 38 mm, and has a cross-sectional hardness difference of within ±5 between any two points on a cross-section formed by cutting the inner core layer in half. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 30 to 42 mm. The sum of the respective hardnesses at the center of the inner core layer, at the outer core layer 1 mm outside a boundary between the inner core layer and the outer core layer, at the inner core layer 1 mm inside the boundary, and at the surface of the outer core layer is set to a value in a range of from 260 to 360. Such a golf ball is able to achieve an increased distance.08-26-2010
20120100932MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope layer is formed of an inner envelope layer, an intermediate envelope layer and an outer envelope layer. The inner, intermediate and outer envelope layers, the intermediate layer and the cover are each formed primarily of a resin material which may be of the same or different types, and the core is formed primarily of a rubber material. The cover has a material hardness which is higher than the core center hardness. One of the inner layers has a material hardness which is higher than either or both of the cover material hardness and the average core hardness (defined as the arithmetic mean of the core surface hardness and the core center hardness). The golf ball lowers the spin rate on full shots with a driver, increasing the distance traveled by the ball, and has a good controllability, maintaining a straight path particularly on full shots. In addition, it has a good feel on impact and an excellent scuff resistance.04-26-2012
20110092312GOLF BALL RESIN COMPOSITION AND GOLF BALL USING THE SAME - An object of the present invention is to provide a golf ball resin composition that comprises an ionomer resin with an excellent resilience and fluidity. Another object of the present invention is to provide a golf ball excellent in the resilience without lowering the durability significantly in a golf ball using the ionomer resin for the intermediate layer. The present invention provides a golf ball resin composition comprising, 100 parts by mass of (A) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of ethylene, α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and α,β-unsaturated carboxylic acid ester, and from 25 parts to 100 parts by mass of (B) a metal salt of a fatty acid having 18 to 30 carbon atoms. The golf ball of the present invention is not limited, as long as it comprises a constituent member formed from the golf ball resin composition of the present invention.04-21-2011
20100144465FOAM-CORE GOLF BALLS - A golf ball with a controlled moment of inertia and controlled spin rate is disclosed. In one embodiment, the golf ball comprises a core, an intermediate layer and a cover, wherein the intermediate layer comprises a foamed highly neutralized polymer, has its specific gravity reduced to less than about 1.05, wherein the reduction in the specific gravity of the intermediate layer is less than about 25% to minimize the reduction in the coefficient of restitution of the golf ball to about 6% or less.06-10-2010
20110143861MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, at least one intermediate layer and a cover. The core has a hardness which gradually increases from a core center to a core surface, with the hardness difference in JIS-C hardness units between the core center and the core surface being at least 15 and, letting (I) be the average value for the cross-sectional hardness at a position 15 mm from the core center and the cross-sectional hardness at the core center and letting (II) be the cross-sectional hardness at a position 7.5 mm from the core center, the hardness difference (I)-(II) in JIS-C hardness units being not more than ±2. The intermediate layer has a material hardness and the core has a surface hardness which together satisfy the condition (JIS-C hardness of intermediate layer material)−(JIS-C hardness of core surface)>0. A sphere composed of the core encased by the intermediate layer has an initial velocity and the core has an initial velocity which together satisfy the condition (initial velocity of sphere composed of core encased by intermediate layer)−(initial velocity of core)≧0. The sphere composed of the core encased by the intermediate layer has a deflection and the core has a deflection which together satisfy the condition 0.80≦(deflection of sphere composed of core encased by intermediate layer)/(deflection of core). The cover is formed primarily of polyurethane, and the cover material has a Shore D hardness and the intermediate layer material has a Shore D hardness which together satisfy the condition (Shore D hardness of cover material)−(Shore D hardness of intermediate layer material)≦0. The golf ball of the invention has an excellent flight performance and feel, a good durability to repeated impact, and an excellent scuff resistance.06-16-2011
20110300968GOLF BALL - Disclosed is a golf ball including a center portion, at least two intermediate tiers sequentially surrounding the center portion, and an outer tier surrounding the intermediate tiers, which comprises: said outer tier having a thickness in a range of 0.8˜1.4 mm, and an a hardness (Shore D) in a range of 40˜50; among the intermediate tiers, said first intermediate tier formed just below the outer tier, having a thickness in a range of 1.0˜2.0 mm and a hardness (Shore D) in a range of 50˜65; each intermediate tier formed just below the first intermediate tier having a thickness in a range of 1.3˜1.5 mm, and a hardness (Shore D) in range of 30˜70; the radius of the center portion is in a range of 5˜18 mm, and a hardness (Shore D) in a range of 30˜70; and a moment of inertia value of the golf ball is less than 83 g·cm12-08-2011
20130023357GOLF BALL COMPRISING A VERY-LOW MELT FLOW INNER COVER LAYER COMPOSITION - A golf ball including a core; an inner cover layer formed from a thermoplastic composition and having a thickness of about 0.005 inches to 0.40 inches and a surface hardness of about 60 Shore D or greater; and an outer cover layer formed from a thermoset material and having a thickness of about 0.01 inches to 0.05 inches and a surface hardness of about 60 Shore D or less. The thermoplastic composition has a first melt flow index at 280° C. under a 10-kg load of less than about 35 g/10 min and a second melt flow index at 265° C. under a 5-kg load of less than about 10 g/10 min.01-24-2013
20090124417Dual Core Golf Ball having Negative-Hardness-Gradient Thermoplastic Inner Core and Shallow Positive-Hardness-Gradient Thermoset Outer Core Layer - A golf ball comprising a thermoplastic inner core layer that has a geometric center hardness greater than its surface hardness to define a “negative” hardness gradient. An outer core layer is disposed about the inner core and is formed from a substantially homogenous thermoset composition, typically rubber, and has an inner surface hardness less than its outer surface hardness to define a “positive” hardness gradient. An inner cover layer is disposed about the outer core layer and an outer cover layer is disposed about the inner cover layer. The “negative” hardness gradient of the inner core is typically −1 to −5 Shore C and the “positive” hardness gradient of the core layer is less than 25 Shore C points. The difference between the inner core surface hardness and the outer core inner surface hardness, Δh, should be less than 25 Shore C points.05-14-2009
20090118040GOLF BALLS WITH CORES OR INTERMEDIATE LAYERS PREPARED FROM HIGHLY-NEUTRALIZED ETHYLENE COPOLYMERS AND ORGANIC ACIDS - Disclosed are golf balls comprising cores or intermediate layers prepared from thermoplastic compositions having coefficients of restitution equal to or greater than 0.83 and PGA compressions greater than 100. Also disclosed is a composition comprising or prepared from (a) at least one aliphatic, mono-functional organic acid having from 16 to 20 carbon atoms, wherein the organic acid is unsaturated and linear; (b) an ethylene acid copolymer consisting essentially of copolymerized comonomers of ethylene and from 18 to 24 weight % of copolymerized comonomers of at least one C05-07-2009
20110201453GOLF BALL - The invention provides a golf ball having a core, at least one intermediate layer encasing the core, and a cover. The intermediate layer is formed primarily of a specific ionomer resin composition that is highly neutralized. The cover is formed by injection molding a single resin blend composed primarily of a thermoplastic polyurethane and (g) a polyisocyanate compound in at least some portion of which all the isocyanate groups on the molecule are present in an unreacted state. The golf ball of the invention has a low spin rate on shots with a driver, enabling it to travel a good distance, and achieves a sufficient spin rate on shots with a short iron such as a wedge. The ball also has an excellent scuff resistance.08-18-2011
20080248898GOLF BALL HAVING VISUALLY ENHANCED NON-UNIFORM THICKNESS INTERMEDIATE LAYER - A golf ball with at least one core layer, at least one intermediate layer, and at least one cover layer. Any combination of the layers of the golf ball may feature a visually enhancing means. The cover layer is preferably translucent and provides a view to the intermediate layer and/or the core layer. The intermediate layer has a non-uniform thickness. The core may comprise a non-spherical insert. The intermediate layer and the core layer may affect the spin rate of the golf ball. The intermediate layer may be used to indicate the alignment of the golf ball.10-09-2008
20090209366GOLF BALL - The invention provides a golf ball composed of a core, a cover having a plurality of dimples on an outside surface thereof, and an intermediate layer disposed between the core and the cover. The core has a deflection, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of at least 3.0 mm but not more than 5.0 mm. The intermediate layer is formed of a highly neutralized resin material, and has a Shore D hardness of at least 40 but not more than 60 and a thickness of at least 1.7 mm but not more than 4.0 mm. The number of dimples is at least 272 but not more than 348. The golf ball, through a combination of dimples which do not cause a loss of lift in the low-velocity, low-spin rate region of the ball trajectory and a low-spin construction, travels farther and is therefore beneficial for competitive use by both skilled and amateur golfers.08-20-2009
20120108360MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball is composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a thermoplastic resin, and has a cross-sectional hardness difference of within ±5 between any two points on a cross-section obtained by cutting the inner core layer in half. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 35 to 42 mm. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer.05-03-2012
20090170634GOLF BALL WITH SOFT FEEL - A golf ball comprising: 07-02-2009
20080207354Mixed-resin mantle metal-core golf balls and methods of manufacturing same - A golf ball is provided. The golf ball includes a hollow metal core made from a work-hardened metal alloy. The golf also includes a mantle layer enveloping the metal core. The mantle layer may be made from a mixture of long-ball resin and soft-ball resin. The golf ball further includes a cover positioned about the mantle layer to protect the mantle layer. A method of manufacturing the golf ball is also provided.08-28-2008
20090111609MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is composed overall of an inner layer and an outer layer which are each formed primarily of a rubber material, with the outer core layer being harder than the inner core layer. The envelope layer, intermediate layer and cover have respective thicknesses which satisfy the condition: cover thicknesscover material hardness. The golf ball has a lower spin rate on full shots with a driver, further increasing the distance traveled by the ball. Moreover, it has a good controllability, maintaining in particular a straight trajectory on full shots, and also has an excellent scuff resistance.04-30-2009
20110172030MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a thermoplastic resin, has a diameter of from 21 to 38 mm, has a JIS-C cross-sectional hardness of from 60 to 83 at any single point on a cross-section obtained by cutting the inner core layer in half, and has a cross-sectional hardness difference between any two points on the cross-section of within ±5. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 35 to 42 mm. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer. Such a golf ball is able to achieve an increased distance.07-14-2011
20110172031MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of two or more layers, which solid core has an inner core layer and an outer core layer, and cover has an inner cover layer and an outer cover layer. The inner core layer is formed primarily of a thermoplastic resin, has a diameter of from 21 to 38 mm, has a JIS-C cross-sectional hardness of from 60 to 83 at any single point on a cross-section obtained by cutting the inner core layer in half, and has a cross-sectional hardness difference between any two points on the cross-section of within ±5. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 35 to 42 mm. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer. And, the difference in Shore D hardness between the inner cover layer and the outer cover layer is within ±5. Such a golf ball is able to achieve an increased distance.07-14-2011
20110172028MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a thermoplastic resin, has a diameter of from 21 to 38 mm, has a JIS-C cross-sectional hardness of from 60 to 83 at any single point on a cross-section obtained by cutting the inner core layer in half, and has a cross-sectional hardness difference between any two points on the cross-section of within ±5. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 35 to 42 mm. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer. Such a golf ball is able to achieve an increased distance.07-14-2011
20100248862GOLF BALL HAVING MOISTURE BARRIER LAYERS MADE FROM POLYOLEFIN COMPOSITIONS - A multi-layered golf ball having a core, moisture vapor barrier layer, and outer cover, wherein the moisture barrier layer is preferably made from a non-ionomeric polyolefin composition is disclosed. The moisture barrier layer is applied at very low thickness, preferably in the range of 0.0001 to 0.010 inches, so that the playing performance properties of the ball are not altered. Preferably, the moisture vapor barrier layer is applied over the core material using powder coating or solution coating methods.09-30-2010
20080274826GOLF BALL - The present invention provides a golf ball composed of a core, an outermost cover layer and one or more intermediate layer therebetween. At least one intermediate layer includes a mixture composed of a base polymer made of, in a specific ratio, (a) a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, (b) a thermoplastic elastomer selected from the group consisting of thermoplastic polyester elastomers, thermoplastic block copolymers and thermoplastic polyurethanes, and (c) a thermoplastic block copolymer containing end blocks modified by a functional group having reactivity with an ionomer resin, both end blocks being formed of different comonomers. The mixture also includes (e) an organic acid of 18 to 40 carbons or a derivative thereof, and (f) a metal ion source selected from the group consisting of alkali metals, alkaline earth metals and transition metals. The mixture has an optimized difference between the melt viscosities of (b) and (a) as measured under a shear rate of 6,000 sec11-06-2008
20080293517CASTABLE LIQUID RUBBER COMPOSITIONS FOR GOLF BALLS - A golf ball comprising a layer made from a liquid rubber composition is disclosed. A castable liquid polybutadiene is the preferred principal rubber component. The molecular weight of the castable liquid polybutadiene is at least about 1,000 and the castable liquid polybutadiene is in a liquid state at room temperature. The castable liquid rubber layer can be a cover layer, a casing layer, an intermediate layer or a core layer.11-27-2008
20110224020COLORED GOLF BALL - An object of the present invention is to provide a golf ball having a high performance as well as the visibility and the fashionable appearance. The present invention provides a colored golf ball having a color other than white and comprising: a core having a center and at least one intermediate layer disposed around the center, and a cover disposed around the core, wherein the cover and at least one of the intermediate layer preferably contain a fluorescent dye and/or a fluorescent pigment.09-15-2011
20110143862MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball comprising a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples, wherein the core is made primarily of a rubber material and has a diameter of at least 31 mm, the envelope layer and intermediate layer are each made primarily of the same or different resin materials and the cover is made primarily of polyurethane; intermediate layer and cover have an optimized thickness relationship; the core, envelope layer, intermediate layer and cover have optimized hardness relationships; and the core surface and core center have a large hardness difference therebetween. The golf ball has an excellent flight performance and controllability that are acceptable to professionals and other skilled golfers, while also having an excellent durability to cracking on repeated impact and an excellent scuff resistance.06-16-2011
20090118039GOLF BALL - The present invention relates to a golf ball having a core, a cover of at least one layer encasing the core, and a surface on which a plurality of dimples are formed. The cover has an outermost layer with a thickness of at least 1.2 mm and a Shore D hardness of at least 50 but not more than 65. The ball surface has a lightness L value, expressed in the Lab color system as defined by JIS Z8730, of at least 89, an a value of at least 2 but not more than 10, and a b value of −20 or above. Increasing the reddish coloring of a white golf ball enhances the fashionability of the ball and improves the way the ball looks and feels to the golfer when it is played.05-07-2009
20080318710Golf ball material and golf ball - The present invention provides a golf ball material which is a thermoplastic ionomer blend composition of an acid-containing ethylene-based terpolymer having a weight-average molecular weight Mw of at least about 100,000, an acid-containing ethylene-based copolymer and/or terpolymer having a Mw of about 1,500 to about 95,000, and a low-molecular-weight acid-containing compound having a molecular weight of up to about 1,000, at least some portion of which composition is neutralized. The golf ball material is soft and resilient, and has a good durability and improved moldability.12-25-2008
20090111608MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is composed overall of an inner layer and an outer layer which are each formed primarily of a rubber material, with the outer core layer being harder than the inner core layer. The envelope layer, intermediate layer and cover have respective thicknesses which satisfy the condition: cover thicknesscover material hardness. The golf ball has a lower spin rate on full shots with a driver, further increasing the distance traveled by the ball. Moreover, it has a good controllability, maintaining in particular a straight trajectory on full shots, and also has an excellent scuff resistance.04-30-2009
20090209367Golf ball - The present invention is to a golf ball having an equator at latitude 0° and two poles; and an equator region defined by latitudes 0 to 25°, a shoulder region defined by latitudes from more than 25° to less than 65°, and a pole region defined by latitudes 65° to 90°; and a dimple pattern on the surface of the golf ball having an average dimple volume of the equator region Ve, an average dimple volume of the shoulder region, Vs, and an average dimple volume of the pole region, Vp such that the ratio Vs/Ve is less than 0.97 and the ratio Vp/Vs is less than 0.97.08-20-2009
20130012338GOLF BALL WITH SOFT FEEL - A golf ball comprising: 01-10-2013
20090239683GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an inner cover layer and an outer cover layer. The core is made of a material obtained by molding under applied heat a rubber composition containing (a) a base rubber containing polybutadiene having a stress relaxation time (T09-24-2009
20100016099Method of Making a Golf Ball with a Multi-Layer Core - A multilayer golf ball including a solid center having a center hardness, a plurality of laminates cut into a plurality of shapes formed around the center to create an inner ball, and a cover formed around the inner ball, wherein the plurality of layers can include at least a first layer having a hardness greater than the center hardness and a second layer having a hardness greater than the first layer hardness, and optionally a third layer disposed between the first and the second layers having a hardness greater than the first layer hardness.01-21-2010
20100190580MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core, a cover, at least one intermediate layer interposed therebetween, and a plurality of dimples on a surface of the ball. The diameter of the solid core, the deflection of the core when compressed under a final load of 130 kgf from an initial load of 10 kgf, the hardness at the center of the core, the hardness in a region 5 mm to a region 10 mm from the center of the core, the hardness in a region 15 mm from the center of the core, and the surface hardness are set within specific ranges. The intermediate layer is composed primarily of a material obtained by mixing under applied heat a specific resin composition, and the thickness, material hardness and material melt flow rate (MFR) of the intermediate layer, as well as the hardness difference between the surface of the solid core and the intermediate layer are set within specific ranges. The cover is composed primarily of a thermoplastic resin, and has a thickness, a hardness and a material melt flow rate (MFR) set within specific ranges. In addition, the number of dimples on the ball and the total dimple trajectory volume (TVT) for the dimples on the ball are set in specific ranges. The golf ball of the invention has an excellent feel, controllability and flight performance.07-29-2010
20100167842GOLF BALL - An object of the present invention is to provide a golf ball providing a great distance. The present invention provides a golf ball comprising: a core consisting of a center and one or more intermediate layers covering the center; and a cover covering the core, wherein at least one of said intermediate layers is formed from a high fluidity intermediate layer composition that contains (A) a polyamide resin composition having a flexural modulus in a range from 500 MPa to 4,000 MPa and a melt flow rate (240° C., 2.16 kg) of 5.0 g/10 min or more, and (B) at least one member selected from the group consisting of an ethylene-(meth)acrylic acid binary copolymer, a metal-neutralized product of the binary copolymer, an ethylene-(meth)acrylic acid-(meth)acrylic acid ester ternary copolymer, and a metal-neutralized product of the ternary copolymer.07-01-2010
20110130218GOLF BALLS COMPRISING POLYTRIMETHYLENE ETHER AMINE-BASED POLYUREA COMPOSITIONS - Golf balls having at least one layer made from a composition comprising a polytrimethylene ether amine (PTMEA)-based polyurea or polyurea/urethane are provided. The composition is the reaction product of a polyisocyanate with polytrimethylene ether amine and a hydroxyl and/or amine curing agent. In a preferred version, a functionalized PTMEA-based polyurea or polyurea/urethane hybrid is produced using iscoyanates, polytrimethylene ether amines, or curing agents containing acid, ester, or ionic groups. Blends of polytrimethylene ether amine with other amine compounds such as amine-terminated hydrocarbons, polyethers, polyesters, polycarbonates, and polycaprolactones can be used. The composition can be prepared using prepolymer and one-shot manufacturing techniques. The composition may be used to form any layer in the golf ball structure and the resulting golf ball has improved resiliency and playing performance.06-02-2011
20100160079COMPOSITIONS FOR SPORTS EQUIPMENT - Compositions comprising the reaction product of: 06-24-2010
20100160081GOLF BALL COMPOSITION - The present invention relates to golf ball having a core and an outer cover layer made from a blend composition of about 1 to about 99 wt % of a block copolymer having no polar functionality; and from about 1 to about 99 wt % (based on the combined weight of Components A and B) of either one or more unimodal acidic polymers; or a bimodal polymer blend composition including a high molecular weight component having a weight average molecular weight, Mw, of about 80,000 to about 500,000 and including one or more ethylene/α,β-ethylenically unsaturated C06-24-2010
20100160080GOLF BALL - A first golf ball 06-24-2010
20100216572MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a thermoplastic resin, has a diameter of from 3 to 20 mm, and has a cross-sectional hardness difference of within ±5 between any two points on a cross-section obtained by cutting the inner core layer in half. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 35 to 42 mm. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer. Such a golf ball is able to achieve an increased distance and has a good feel on impact.08-26-2010
20100227706MULTI-LAYER COVER GOLF BALL HAVING NON-IONOMERIC INTERMEDIATE COVER LAYER - A golf ball includes a core and a cover disposed about the core. The cover includes a thermoplastic inner cover layer having a hardness between 55 Shore D and 60 Shore D, an outer cover layer having a hardness between 55 Shore D and 60 Shore D, and a non-ionomeric thermoplastic intermediate cover layer disposed between the inner and outer cover layer. The intermediate layer has a hardness greater than the inner cover layer and the outer cover layer. The inner cover is formed from a partially- or fully-neutralized ionomer, the intermediate layer from a non-ionomer, and the cover outer cover layer from a polyurea formed from the reaction product of a prepolymer comprising an isocyanate and an amine-terminated polytetramethylene ether glycol, and an amine-terminated curing agent.09-09-2010
20090170635GOLF BALL LAYER HAVING REDUCED SURFACE HARDNESS AND METHOD OF MAKING SAME - A method of making a golf ball comprising the steps of providing an untreated golf ball core comprising a thermoset rubber composition, the untreated golf ball core comprising an untreated outer surface having a hardness; treating the untreated outer surface of the untreated golf ball core with a surface-softening material comprising at least one fatty acid or fatty acid salt composition to form a golf ball core comprising a treated outer surface having a hardness less than the hardness of the untreated outer surface; and forming at least one cover layer about the core to form the golf ball. Also, the untreated core may comprise a geometric center and an untreated outer surface, each having a hardness such that the hardness of the treated outer surface is less than both the hardness of the untreated geometric center and the hardness of the untreated outer surface. A golf ball comprising a core and a cover, wherein the core has an outer surface that is treated with at least one fatty acid such that the outer surface has a hardness ratio (R) of the hardness after treatment (H07-02-2009
20090042669Multi-layer Core Golf Ball - The present invention is directed to an improved golf ball displaying the desired spin profile and having a generally rigid, thermoset polybutadiene outer core surrounding a relatively soft, low compression inner core. In general, this golf ball has an inner core and at least one outer core layer surrounding the inner core. The inner core has a hardness less than a hardness of the outer core and a specific gravity less than or equal to the outer core specific gravity. Overall the inner core compression and outer core are formulated to provide a combined overall core compression of greater than about 50, preferably greater than about 70. A cover layer is provided to surround and to cover the outer core layer.02-12-2009
20080305890MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball comprising a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is formed primarily of a rubber material, has a diameter of at least 31 mm, and has a hardness which gradually increases from a center to a surface thereof, the hardness difference in JIS-C hardness units between the core center and the core surface being at least 15 and, letting (I) be the average value for cross-sectional hardnesses at a position 15 mm from the core center and at the core center and letting (II) be the cross-sectional hardness at a position 7.5 mm from the core center, the hardness difference (I)-(II) therebetween in JIS-C units being not more than ±2. The envelope layer and the intermediate layer are each formed primarily of the same or different resin materials. The cover is formed primarily of a thermoplastic resin or a thermoplastic elastomer. The envelope layer, intermediate layer and cover have thicknesses which satisfy the relationship cover thicknesscover surface hardness, and 1≦(JIS-C hardness of intermediate layer surface−JIS-C hardness of envelope layer surface)≦30. The golf ball has an excellent flight performance and controllability that are acceptable to professionals and other skilled golfers, while also having an excellent durability to cracking on repeated impact and an excellent scuff resistance.12-11-2008
20090111610MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is formed primarily of a rubber material, the envelope layer and the intermediate layer are each formed primarily of the same or different resin materials, and the cover is formed primarily of a thermoplastic resin or a thermoplastic elastomer. The envelope layer, intermediate layer and cover have thicknesses which satisfy the condition: cover thicknesscover material hardness. The golf ball has an outstanding flight performance and controllability which are acceptable to professionals and other skilled players, in addition to which it has an excellent durability to cracking under repeated impact and an excellent scuff resistance.04-30-2009
20100298068USE OF NUCLEATING AGENTS TO INCREASE THE FLEXURAL MODULUS OF IONOMERS - A golf ball composition having a copolymer with an acid content modified by a nucleating agent is described. The nucleating agent modifies the flexural modulus of the acid copolymer.11-25-2010
20100304893GOLF BALLS WITH CORES OR INTERMEDIATE LAYERS PREPARED FROM HIGHLY-NEUTRALIZED ETHYLENE TERPOLYMERS AND ORGANIC ACIDS - Described are golf balls comprising cores or intermediate layers prepared from thermoplastic compositions having coefficients of restitution equal to or greater than 0.83 and PGA compression greater than 100. Also described is a composition comprising or prepared from (a) at least one aliphatic, mono-functional organic acid having from 16 to 20 carbon atoms, wherein the organic acid is unsaturated and linear; (b) an ethylene acid copolymer consisting essentially of copolymerized comonomers of ethylene and from 18 to 24 weight % of copolymerized comonomers of at least one C12-02-2010
20130137535GOLF BALL MATERIAL AND GOLF BALL USING THE SAME - An object of the present invention is to provide a golf ball with improved durability and/or resilience by improving the adhesion between a constituent member comprising an ionomer resin and a constituent member comprising a polyurethane. The present invention provides a golf ball material composed of a multi-block copolymer having a block A that has an acid functional group neutralized with a metal ion and a block B that has lower polarity than the block A.05-30-2013
20090036233MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core obtained by molding under heat a specific rubber composition and having a cover of at least three layers which encases the core. By optimizing the deflection of the core under a specific load, optimizing the hardness at the center of the core and the hardnesses of the innermost cover layer, outermost cover layer and intermediate cover layer, setting the combined thickness of the cover layers to at least a specific value, and forming the innermost cover layer of a highly neutralized ionomer resin composition, a sufficient reduction in the spin rate of the ball on shots taken with a driver can be achieved, enabling the distance traveled by the ball to be increased.02-05-2009
20100331112MULTI-LAYER GOLF BALL - Multi-layer golf balls having a soft, low compression center; a soft, flexible outer cover layer; and a relatively hard, high compression intermediate layer disposed between the center and the outer cover layer are provided. The outer surface hardness of the intermediate layer is greater than that of both the center and the outer cover layer.12-30-2010
20100331111MULTI-LAYER GOLF BALL - Multi-layer golf balls having a hard, high compression center, a relatively soft intermediate layer, and a stiff outer cover layer, are provided. The outer surface hardness of the intermediate layer is less than that of both the center and the outer cover layer.12-30-2010
20100331109MULTI-LAYER GOLF BALL - Multi-layer golf balls having a hard, high compression center, a relatively soft intermediate layer, and a stiff outer cover layer, are provided. The outer surface hardness of the intermediate layer is less than that of both the center and the outer cover layer.12-30-2010
20100167843MULTI-LAYER GOLF BALL PROVIDING IMPROVED SPEED - The present invention is directed to a multi-layer golf ball comprising at least one core or core layer, at least one intermediate layer, and at least one cover layer. The core has a diameter of about 1.20 to about 1.56 in. and a PGA compression of about 40 to about 90. The intermediate layer comprises a modified ionomeric polymer, and it has a thickness of about 0.01 to about 0.10 in. and a Shore D hardness of about 30 to about 70. The cover layer has a Shore D hardness of about 40 to about 75. The multi-layer golf balls of the present invention provide high driver ball speed and/or a high Coefficient of Restitution, while maintaining excellent shot feel.07-01-2010
20100331110MULTI-LAYER GOLF BALL - Multi-layer golf balls having a hard, high compression center, a relatively soft intermediate layer, and a stiff outer cover layer, are provided. The outer surface hardness of the intermediate layer is less than that of both the center and the outer cover layer.12-30-2010
20110244986GOLF BALL - An object of the present invention is to provide a golf ball excellent in resilience and durability, with a good moldability of the intermediate layer. The present invention provides a golf ball having a center, a cover, and an intermediate layer disposed between the center and the cover, wherein the intermediate layer is formed from an intermediate layer composition having a flexural modulus ranging from 150 MPa to 450 MPa, a maximum loss factor (tan δ) between −20° C. and 0° C. of 0.08 or less, a rebound resilience of 55% or more, and a slab hardness ranging from 40 to 60 in Shore D hardness, and the intermediate layer composition comprises, as a resin component, 30 mass % to 70 mass % of (A) a modified polyester elastomer having a Shore A hardness of 95 or less; 70 mass % to 30 mass % of (B) a binary ionomer resin having a Shore D hardness of 65 or more, a flexural modulus of 300 MPa or more, and a melt flow rate (190° C., 2.16 kg) of 1.0 g/10 min or more; and 0 mass % to 50 mass % of (C) a thermoplastic resin other than (A) component and (B) component (provided that a total content of (A) component, (B) component, and (C) component is 100 mass %).10-06-2011
20110244985GOLF BALL COMPRISING RENEWABLE RESOURCE COMPONENT - The invention is directed to a golf ball comprising a core and a cover, wherein at least one of the core and the cover comprises about 10 wt % or greater of a renewable polymer composition comprising an ultra high molecular weight polyhydroxyalkanoate compound having the formula:10-06-2011
20090124413Thermoplastic Core having a Hardness Gradient Formed from a Gradient-Initiating Solution - A golf ball including a thermoplastic core having an outer diameter of 1.51 inches to 1.59 inches; an outer cover layer; and an inner cover layer between the core and the outer cover layer. The thermoplastic core has been exposed to a gradient-initiating solution comprising a solvent, free radical initiator, and a reactive co-agent comprising a metal salt of an acrylic or methacrylic acid, a mono- or multi-functional acrylate or methacrylate, or having the chemical structure05-14-2009
20090258728METHOD FOR FORMING A GOLF BALL FROM A POLY(DIMETHYL SILOXANE) IONOMER - A method of making a golf ball comprising a core and a cover layer, wherein at least one of the core or cover layer comprises homo and copolymers of poly(dimethyl siloxane) ionomers, and their blends for improved resiliency and abrasion resistant golf balls.10-15-2009
20090036232MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core obtained by molding under heat a specific rubber composition and having a cover of at least three layers which is composed of a thermoplastic resin material and encases the core. By optimizing the deflection of the core under a specific load, optimizing the hardness at the center of the core and the hardnesses of the innermost cover layer, outermost cover layer and intermediate cover layer, setting the combined thickness of the cover layers to at least a specific value, and forming the innermost cover layer of a highly neutralized ionomer resin composition, the spin rate of the ball on shots taken with a driver can be significantly reduced, enabling the distance traveled by the ball to be increased. Moreover, the ball has a good feel on shots with a driver.02-05-2009
20090036231MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core obtained by molding under heat a specific rubber composition and having a cover of at least three layers which encases the core. By optimizing the deflection of the core under a specific load, optimizing the hardness at the center of the core and the hardnesses of the innermost cover layer, outermost cover layer and intermediate cover layer, setting the combined thickness of the cover layers to at least a specific value, and forming the innermost cover layer of a highly neutralized ionomer resin composition, a sufficient reduction in the spin rate of the ball on shots taken with a driver can be achieved, enabling the distance traveled by the ball to be increased.02-05-2009
20090215553THIN-LAYER-COVERED GOLF BALL WITH IMPROVED VELOCITY - Golf balls including cores formed from polybutadiene reaction products having a percent change in dynamic stiffness from 0° C. to −50° C. of less than 130 percent where the reaction products include a resilient polymer component, a crosslinking material, a cis-to-trans catalyst, and a free radical source. The golf balls may be formed with polyurethane covers, covers formed from castable reactive liquid materials, among other materials. The golf balls may also include an intermediate layer.08-27-2009
20110081990HIGHLY-NEUTRALIZED THERMOPLASTIC COPOLYMER CENTER FOR IMPROVED MULTI-LAYER CORE GOLF BALL - Multi-layer golf balls comprising a center, intermediate layer, and cover are disclosed. The center is formed from a highly-neutralized acid copolymer composition.04-07-2011
20110098131GOLF BALL - The invention provides a golf ball having a core, at least one intermediate layer encasing the core, and a cover. The intermediate layer is formed primarily of a specific ionomer resin composition that has been highly neutralized, and the cover is formed primarily of an ionomer resin composition containing a specific amount of a granular inorganic filler. The golf ball has an excellent durability to repeated impact and a good flight performance.04-28-2011
20110081988MULTI-PIECE GOLF BALLS HAVING LAYERS MADE FROM EPOXY SYSTEMS - Multi-piece, solid golf balls containing an inner core, an intermediate layer surrounding the core, and an outer cover are provided. At least one layer is made from an epoxy composition comprising a curing agent such as zinc diacrylate or zinc dimethacrylate. The epoxy composition is produced by reacting an epoxy prepolymer with a curing agent. Preferably, the epoxy composition is used to form an intermediate and/or cover layer resulting in a golf ball having high resiliency, good impact durability, and soft feel.04-07-2011
20090023517THREE-LAYER-CORE GOLF BALL HAVING HIGHLY-NEUTRALIZED POLYMER OUTER CORE LAYER - A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is substantially the same as the second surface hardness and the inner surface hardness.01-22-2009
20090023516MULTI-LAYER-CORE GOLF BALL HAVING HIGHLY-NEUTRALIZED POLYMER OUTER CORE LAYER - A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is less than the second surface hardness by at least 5 Shore C and less than the inner surface hardness by at least 5 Shore C.01-22-2009
20110159992IONOMER COMPOSITIONS FOR GOLF BALLS - Certain disclosed embodiments of the present invention concern a golf ball including a core having a center, an outer cover layer, and optionally one or more intermediate layers. At least one or more of the core, outer cover layer or one or more intermediate layers includes a sulfonated polyisoprene ionomer having the general formula:06-30-2011
20120202620Golf Ball Having Dual Core Deflection Differential - A golf ball comprising a core comprising an inner core center and an outer core layer disposed over the inner core center. The inner core center has a deflection of greater than 0.210 inch under a load of 220 pounds and the core has a deflection ranging from 0.120 inch to 0.080 inch under a load of 220 pounds. An inner mantle layer is disposed over the core, an outer mantle is disposed over the inner mantle layer, and a cover is disposed over the outer mantle.08-09-2012
20090137341MULTI-LAYER CORE GOLF BALL HAVING THERMOSET RUBBER COVER - An all rubber golf ball with one or more thermosetting rubber core layers and one or more thermosetting rubber cover layer. At least one of the ball's layers has moisture vapor barrier property, and in one aspect the moisture vapor barrier layer is an intermediate layer. In one embodiment, the thermosetting rubber layers follow a cis- or a trans-polybutadiene gradient from the center of the ball to its cover.05-28-2009
20090118038GOLF BALL - The present invention relates to a golf ball having a ball component made of a material molded under heat from a rubber composition which includes: 05-07-2009
20090111612THREE-PIECE SOLID GOLF BALL - The present invention provides a three-piece solid golf ball having a core molded under heat from a specific rubber composition and inner and outer cover layers encasing the core. By optimizing the core deflection under a specific load and the overall thickness of the cover layers, by forming the inner cover layer of a highly neutralized ionomer resin composition, and by optimizing within specific ranges the Shore D hardnesses of the inner cover layer and the outer cover layer, the spin rate of the ball on shots with a driver can be sufficiently reduced, enabling an increased distance to be achieved.04-30-2009
20110021291GOLF BALL HAVING CROSS-CORE HARDNESS DIFFERENTIAL AND METHOD FOR MAKING IT - A golf ball core that includes a center point having a first hardness value and/or first specific gravity value, and a surface having a second hardness value and/or second specific gravity value. The first hardness value, or first specific gravity value, is different from the second hardness value, or second specific gravity value, respectively.01-27-2011
20120122611MULTI-LAYER GOLF BALL PROVIDING IMPROVED SPEED - The present invention is directed to a multi-layer golf ball comprising at least one core or core layer, at least one intermediate layer, and at least one cover layer. The core has a diameter of about 1.20 to about 1.56 in. and a PGA compression of about 40 to about 90. The intermediate layer comprises a modified ionomeric polymer, and it has a thickness of about 0.01 to about 0.10 in. and a Shore D hardness of about 30 to about 70. The cover layer has a Shore D hardness of about 40 to about 75. The multi-layer golf balls of the present invention provide high driver ball speed and/or a high Coefficient of Restitution, while maintaining excellent shot feel.05-17-2012
20120122610GOLF BALL HAVING A THERMOPLASTIC POSITIVE HARDNESS GRADIENT INNER CORE LAYER AND A THERMOSET SHALLOW POSITIVE HARDNESS GRADIENT OUTER CORE LAYER - A golf ball has an inner core layer including a thermoplastic highly-neutralized ionomer and having a geometric center hardness less than a surface hardness to define a first positive hardness gradient. An outer core layer is formed about the inner core and includes a homogenous thermoset composition. The outer core has an interior hardness less than an outer surface hardness to define a second positive hardness gradient. An inner and outer cover layers are disposed about outer core layer. The first and second hardness gradients each have a slope and the slope of the second hardness gradient is less than the slope of the first hardness gradient such that a ratio of the first and second slopes is 0.8 to 0.85.05-17-2012
20110136588GOLF BALL INCORPORATING PEPTIZERS AND METHOD OF MANUFACTURE - A golf ball including a composition having an unsaturated polymer, a cross-linking agent, a peptizer, and an accelerator. The composition can be incorporated into the golf ball's core, intermediate layers, and cover layers, and can provide optimal performance and durability properties. The golf balls incorporating the composition are easy to manufacture.06-09-2011
20110098132MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core, a cover, at least one intermediate layer situated therebetween, and a plurality of dimples on a surface of the ball. The diameter of the solid core, the deflection of the core when compressed under a final load of 130 kgf from an initial load of 10 kgf, the hardness at the center of the core, the hardness in a region 5 mm to 10 mm from the center of the core, the hardness 15 mm from the center of the core, and the surface hardness are set within specific ranges. The intermediate layer is composed primarily of a material obtained by mixing under applied heat a specific resin composition and the cover is formed primarily of polyurethane. And, the number of dimples and the trajectory volume TVT are set within specific ranges. The golf ball of the invention has an excellent flight performance, feel, controllability and scuff resistance.04-28-2011
20120309560MULTI-LAYERED CORES FOR GOLF BALLS BASED ON IONOMERS - Multi-piece golf balls having a solid core of at least one layer and cover of at least one layer are provided. Thermoplastic ethylene acid copolymer ionomer compositions are used to form the core layers. Preferably, the ball contains a dual-core having an inner core and surrounding outer core layer. Low modulus and high modulus ionomer compositions may be used in the core structure. The ionomer compositions have varying levels of hardness. The resulting ball has high resiliency and rebounding properties.12-06-2012
20100190577CASING LAYER FOR POLYURETHANE-COVERED AND POLYUREA-COVERED GOLF BALLS - This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.07-29-2010
20100190579CASING LAYER FOR POLYURETHANE-COVERED AND POLYUREA-COVERED GOLF BALLS - This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.07-29-2010
20100190576CASING LAYER FOR POLYURETHANE-COVERED AND POLYUREA-COVERED GOLF BALLS - This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.07-29-2010
20100190575MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core, a cover, at least one intermediate layer interposed therebetween, and a plurality of dimples on a surface of the ball. The respective initial velocities (m/s) of the core, a sphere I composed of the core encased by the intermediate layer, and the golf ball satisfy formula A below, and the respective deflections (mm) of the core, the sphere I composed of the core encased by the intermediate layer, and the golf ball, when compressed under a final load of 130 kg from an initial load of 10 kgf, satisfy formula B below:07-29-2010
20110263352GOLF BALL RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a golf ball resin composition containing an ionomer resin with an excellent resilience and fluidity. Another object of the present invention is to provide a golf ball using an ionomer resin for an intermediate layer, with an excellent shot feeling, durability and resilience. The present invention provides a golf ball resin composition comprising (A) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester; (B) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (C) a zinc compound, wherein a content ratio ((A)/(B)) of (A) component to (B) component ranges from 50/50 to 80/20 in a mass ratio and a content of (C) component ranges from 0.1 part to 20 parts with respect to 100 parts by mass of a sum of (A) component and (B) component, and the golf ball resin composition has a melt flow rate (190° C., 2.16 kg) of 5 g/10 min or more.10-27-2011
20110152008INJECTION MOLDABLE COMPOSITIONS AND GOLF BALLS PREPARED THEREFROM - A golf ball is disclosed which includes a Single Component Region which includes greater than 75% by weight of an injection moldable rubber and one or more Discrete Hardness Regions within the Single Component Region. The golf ball may optionally also include a core, an outer cover layer and one or more intermediate layers.06-23-2011
20110201454GOLF BALL - A golf ball having a spherical core, a mid layer covering this core, a reinforcing layer covering this mid layer, and a cover covering this reinforcing layer, wherein the base polymer of the mid layer includes a styrene block-containing thermoplastic elastomer and an ionomer resin; the mid layer has a hardness as measured with a Shore D type hardness scale of equal to or less than 54; the mid layer has a thickness of 0.5 mm or greater and 1.6 mm or less; and the base polymer of the reinforcing layer is a reaction product between carboxyl group-containing polyurethane and polycarbodiimide. The principal component of the base polymer of the cover is an ionomer resin. The cover has a hardness as measured with a Shore D type hardness scale hardness of equal to or greater than 55 and the cover has a thickness of equal to or less than 1.2 mm.08-18-2011
20110218055RUBBER CORES FOR GOLF BALLS BASED ON ETHYLENE-PROPYLENE DIENE COPOLYMERS - A multi-piece golf ball comprising at least one component made of an ethylene-propylene diene copolymer (EPDM) rubber is provided. The multi-piece golf ball includes a center and at least one surrounding core layer. The inner core is preferably made of polybutadiene rubber and the outer core layer is preferably made of an EPDM rubber composition. Preferably, the center hardness of the inner core is greater than the surface hardness of the outer core layer. The golf ball includes a cover of at least one layer, preferably a dual-cover having inner and outer cover layers. The resulting ball has high resiliency and a soft feel.09-08-2011
20110218054RUBBER OUTER COVERS FOR GOLF BALLS BASED ON ETHYLENE-PROPYLENE DIENE COPOLYMERS - A multi-piece golf ball comprising at least one component made of an ethylene-propylene diene copolymer (EPDM) rubber is provided. The multi-piece golf ball includes a cover, preferably a dual-cover having inner and outer cover layers. The outer cover is preferably made of the EPDM rubber material. The golf ball further includes an inner core, preferably a dual-core containing a center and surrounding outer core layer. The center may be made of a polybutadiene rubber composition and the outer core layer may be made of an EPDM rubber composition. The resulting golf ball has high resiliency, a soft feel, and good weatherability.09-08-2011
20110081989HIGHLY-NEUTRALIZED THERMOPLASTIC COPOLYMER CENTER FOR IMPROVED MULTI-LAYER CORE GOLF BALL - A golf ball includes a core formed from a thermosetting rubber composition; a cover; and an intermediate layer disposed between the core and the cover. The intermediate layer is formed from a highly-neutralized thermoplastic copolymer of ethylene and an α,β-unsaturated carboxylic acid, the acid being neutralized by a salt of an organic acid or a suitable base of the organic acid, and sufficient cation source to bring the neutralization to 80% or greater. A sphere resulting from a combination of the core and the intermediate layer has an Atti compression of 60 or greater.04-07-2011
20110172029MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of two or more layers, which solid core has an inner core layer and an outer core layer, and cover has an inner cover layer and an outer cover layer. The inner core layer is formed primarily of a thermoplastic resin, has a diameter of from 21 to 38 mm, has a JIS-C cross-sectional hardness of from 60 to 83 at any single point on a cross-section obtained by cutting the inner core layer in half, and has a cross-sectional hardness difference between any two points on the cross-section of within ±5. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 35 to 42 mm. The ball has specific relationships between the hardness of the inner core layer 1 mm inside a boundary between the inner core layer and the outer core layer, the hardness of the outer core layer 1 mm outside the boundary, and the surface hardness of the outer core layer. And, the inner cover layer has the specific thickness and Shore D hardness and the outer cover layer has the specific Shore D hardness, which is lower than that of the inner cover layer. Such a golf ball is able to achieve an increased distance.07-14-2011
20110319192GOLF BALL INTERMEDIATE LAYER RESIN COMPOSITION AND GOLF BALL - An object of the present invention is to provide a golf ball intermediate layer resin composition with an excellent resilience and fluidity. Another object of the present invention is to provide a golf ball intermediate layer resin composition with a high hardness and durability. Yet another object of the present invention is to provide a golf ball traveling a great distance with an ionomer intermediate layer. The present invention provides a golf ball intermediate layer resin composition comprising, (A) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms; (B) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and (C) a zinc compound, wherein a content ratio ((A)/(B)) of (A) component to (B) component ranges from 50/50 to 80/20 in a mass ratio and a content of (C) component ranges from 0.1 part to 20 parts with respect to 100 parts by mass of a sum of (A) component and (B) component, and the golf ball intermediate layer resin composition has a melt flow rate (190° C., 2.16 kg) of 15 g/10 min or more.12-29-2011
20090111611MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope encasing the core, an intermediate layer encasing the envelope, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope is composed of at least two layers. The core is formed primarily of a rubber material. The envelope, intermediate layer and cover are each formed primarily of the same or different resin materials. The envelope layers and the intermediate layer have a combined thickness which is at least 5.0 times thicker than the cover. An optimized surface hardness relationship exists between the core, a Sphere I composed of the core encased by the envelope layers, a Sphere II composed of the core encased by the envelope layers and the intermediate layer, and a Sphere III composed of the core encased by the envelope layers, the intermediate layer and the cover. The golf ball has an outstanding flight performance and controllability which are acceptable to professionals and other skilled players, in addition to which it has an excellent durability to cracking under repeated impact and an excellent scuff resistance.04-30-2009
20120252603THREE-LAYER-CORE GOLF BALL HAVING HIGHLY-NEUTRALIZED POLYMER OUTER CORE LAYER - A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is substantially the same as the second surface hardness and the inner surface hardness.10-04-2012
20120010022MULTI-LAYER-CORE GOLF BALL HAVING HIGHLY-NEUTRALIZED POLYMER OUTER CORE LAYER - A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is less than the second surface hardness by at least 5 Shore C and less than the inner surface hardness by at least 5 Shore C.01-12-2012
20120021851COLOR GOLF BALL - The present invention is directed a golf ball comprising a core of at least one layer, a cover of at least one layer and optionally at least one intermediate layer disposed between the core and the cover, wherein at least one of the core, cover and intermediate layer comprises a color effect providing pigment comprising at least one of: (1) calcium aluminum borosilicate coated with a metal oxide; (2) silicon dioxide platelets coated with metal oxide; and (3) an iron oxide pigment substrate coated with a metal oxide. The color effect providing pigment may have a particle size of from about 5 μm to about 200 μm. In one embodiment, the layer or surface coating comprising the color effect providing pigment further comprises at least one of a thermoset material, a thermoplastic material, an ionomer material, and a highly neutralized polymer material.01-26-2012
20120157233MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and an outer layer which encases the envelope layer and has formed on a surface thereof a plurality of dimples. The core is made of an elastomer. The envelope layer is formed of an inner envelope layer and an outer envelope layer, and the intermediate layer is formed of an inner intermediate layer and an outer intermediate layer. Letting the average hardness of the core be expressed by the following formula:06-21-2012
20120071272GOLF BALL - The invention provides a golf ball in which an intermediate layer formed of a highly neutralized resin mixture obtained by using two nonionic resins of differing weight-average molecular weights and breadths of molecular weight distribution (weight-average molecular weight/number-average molecular weight) as the base resin and adding thereto an organic acid or a metal salt thereof and a basic inorganic metal compound capable of being neutralized is combined with a cover formed of an ionic resin having a weight-average molecular weight in a specific range and a breadth of molecular weight distribution (weight-average molecular weight/number-average molecular weight) in a specific range. The golf ball material of the invention has an excellent rebound and durability.03-22-2012
20120071274GOLF BALL WITH A TRANSLUCENT LAYER COMPRISING COMPOSITE MATERIAL - A golf ball comprising an opaque core, a composite cover layer, an intermediate layer, and an outer cover layer is provided. The composite cover layer and outer cover layer are formed from a translucent polymeric matrix, and a fibrous material is embedded in the translucent polymeric matrix of the composite cover layer. In one version, the fibrous material comprises a woven or non-woven mat. In another version, the fibrous material comprises a shape memory alloy. In yet another version, the fibrous material comprises a ferromagnetic material and the metal material is subjected to induction heating to improve adhesion between adjacent ball layers.03-22-2012
20120071273GOLF BALL HAVING CROSS-CORE HARDNESS DIFFERENTIAL AND METHOD FOR MAKING IT - A golf ball core that includes a center point having a first hardness value and/or first specific gravity value, and a surface having a second hardness value and/or second specific gravity value. The first hardness value, or first specific gravity value, is different from the second hardness value, or second specific gravity value, respectively.03-22-2012
20110092314MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core, a cover, at least one intermediate layer situated therebetween, and a plurality of dimples on a surface of the ball. The diameter of the solid core, the deflection of the core when compressed under a final load of 130 kgf from an initial load of 10 kgf, the hardness at the center of the core, the hardness in a region 5 mm to 10 mm from the center of the core, the hardness 15 mm from the center of the core, and the surface hardness are set within specific ranges. The intermediate layer is composed primarily of a material obtained by mixing under applied heat a specific resin composition. The golf ball of the invention has an excellent flight performance, feel, controllability and scuff resistance.04-21-2011
20110092313DUAL-CORE COMPRISING ZERO GRADIENT CENTER AND POSITIVE GRADIENT OUTER CORE LAYER - A golf ball including an inner core having a geometric center and a first outer surface, the inner core being formed from a first substantially homogenous rubber composition, and an outer core layer formed from a second substantially homogenous rubber composition, the outer core layer having a second outer surface. An inner cover layer is formed over the core and includes an ionomeric material. An outer cover layer is formed over the inner cover layer and includes a castable polyurea or a castable polyurethane. The first outer surface has a hardness of up to about 20 Shore C less than a hardness at the geometric center to define a negative hardness gradient inner core and the second outer surface has a hardness of up to 18 Shore C greater than the geometric center hardness to define a positive gradient outer core layer and a shallow positive hardness gradient core.04-21-2011
20110105245GOLF BALLS COMPRISING FUNCTIONALIZED POLYURETHANE COMPOSITIONS - Golf balls having at least one layer made from a composition comprising a functionalized polytrimethylene ether-based polyurethane are provided. The composition is the reaction product of a polyisocyanate with polytrimethylene ether glycol and a hydroxyl and/or amine curing agent wherein at least one of the isocyanate compound, polytrimethylene ether glycol compound, or curing agent contains acid, ester, or ionic groups. Blends of polytrimethylene ether glycol with other glycols such as polyester glycol, polycaprolactone glycol, or polycarbonate glycol can be used. The composition can be prepared using prepolymer and one-shot manufacturing techniques. The composition may be used to form any layer in the golf ball structure and the resulting golf ball has improved resiliency and playing performance.05-05-2011
20120129631GOLF BALLS HAVING TRANSLUCENT COVERS FORMED OF AROMATIC AND ALIPHATIC POLYURETHANES - Golf balls having multi-layered covers, wherein at least one of the cover layers is substantially transparent, are provided. The cover includes an inner cover layer made of an ionomer composition; an intermediate cover layer made of an aromatic polyurethane composition; and outer cover layer made of an aliphatic polyurethane composition, wherein the total thickness of the multi-layered cover is no greater than 0.110 inches. In one version, the outer cover layer is substantially transparent and the underlying intermediate cover layer is colored. In another version, both the outer and intermediate cover layers are substantially transparent. Light-reflective fillers such as pearlescent pigments, glitter, and metallics may be added to the cover layers. The resulting ball has pleasing decorative effects.05-24-2012
20120129630GOLF BALL WITH SELECTED SPIN CHARACTERISTICS - A golf ball comprises (a) a core, (b) an inner mantle layer, (c) an intermediate mantle layer, (d) an outer mantle layer and (e) at least one cover layer, and the material flexural modulus (FM) of the core and the various layers follows the relationship FM(core)FM(intermediate)FM(cover), or the relationship FM(core)FM(outer mantle)>FM(cover).05-24-2012
20130172115GOLF BALL RESIN COMPOSITION AND GOLF BALL - A golf ball resin composition that is excellent in resilience includes (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (B) a basic metal salt of a fatty acid.07-04-2013
20120214613GOLF BALL - The present invention is directed to a golf ball having a center, an envelope layer, an intermediate layer and a cover, wherein the intermediate layer has a thickness less than 1.2 mm, the envelope layer has a hardness Hs of 60 or more, the intermediate layer has a hardness Hm from 40 to 60, and the cover has a hardness Hc less than 40 in Shore D hardness, and the hardness Hs, Hm and Hc satisfy a following mathematical expression: Hs>Hm>Hc, and the intermediate layer composition has a flexural modulus from 150 MPa to 450 MPa, a maximum loss factor (tan δ) between −20° C. and 0° C. of 0.08 or less, a rebound resilience of 55% or more.08-23-2012
20120172152GOLF BALL - A golf ball 07-05-2012
20100048326MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope encasing the core, an intermediate layer encasing the envelope, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The surface hardness of the core has a JIS-C hardness value of 40 to 95, the center hardness of the core has a JIS-C hardness value of 30 to 72, and the hardness difference therebetween is from 4 to 14. The envelope is composed of at least two layers. The core is formed primarily of a rubber material. The envelope, intermediate layer and cover are each formed primarily of the same or different resin materials. An optimized surface hardness relationship exists between the core, a Sphere I composed of the core encased by the envelope layers, a Sphere II composed of the core encased by the envelope layers and the intermediate layer, and a Sphere III composed of the core encased by the envelope layers, the intermediate layer and the cover. The golf ball has an outstanding flight performance and controllability which are acceptable to professionals and other skilled players, in addition to which it has an excellent durability to cracking under repeated impact and an excellent scuff resistance.02-25-2010
20120238377GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope layer, an intermediate layer, and a cover, in this order, and has formed on a surface thereof a plurality of dimples. The core has a hardness which gradually increases from a center to a surface thereof, the hardness difference in JIS-C hardness units between the core center and the core surface being at least 15 and, letting (I) be the average value for cross-sectional hardnesses at a position about 15 mm from the core center and at the core center and letting (II) be the cross-sectional hardness at a position about 7.5 mm from the core center, the hardness difference (I)−(II) in JIS-C units being not more than ±2. The envelope layer, intermediate layer and cover have hardnesses which satisfy the condition: cover hardness>intermediate layer hardness>envelope layer hardness.09-20-2012
20130172114MULTI-PIECE GOLF BALL - A multi-piece golf ball includes a core composed of a center, an envelope layer and at least one cover. The center is formed from a composition containing at least one resin component and a basic metal salt of a fatty acid. The resin component is selected from a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid, an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid, a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid ester, and an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid ester. The envelope layer is formed from a composition containing a thermoplastic resin and/or a thermoplastic elastomer as a resin component.07-04-2013
20130172113GOLF BALL - A golf ball 07-04-2013
20100298067GOLF BALL - The present invention provides a golf ball having a core, an intermediate layer encasing the core, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The core is formed primarily of a rubber material, and the intermediate layer and the cover are formed primarily of like or unlike resin materials. The core has a hardness which gradually increases from a center to a surface thereof, the hardness difference in JIS-C hardness units between the core center and the core surface being at least 15 and, letting (I) be the average value for cross-sectional hardnesses at a position about 15 mm from the core center and at the core center and letting (II) be the cross-sectional hardness at a position about 7.5 mm from the core center, the hardness difference (I)-(II) in JIS-C units being not more than ±2. The intermediate layer and cover have hardnesses which satisfy the condition:11-25-2010
20120264541DUAL-CORE COMPRISING ZERO GRADIENT CENTER AND POSITIVE GRADIENT OUTER CORE LAYER - A golf ball including an inner core having a geometric center and a first outer surface, the inner core being formed from a first substantially homogenous rubber composition, and an outer core layer formed from a second substantially homogenous rubber composition, the outer core layer having a second outer surface. An inner cover layer is formed over the core and includes an ionomeric material. An outer cover layer is formed over the inner cover layer and includes a castable polyurea or a castable polyurethane. The first outer surface has a hardness of up to about 20 Shore C less than a hardness at the geometric center to define a negative hardness gradient inner core and the second outer surface has a hardness of up to 18 Shore C greater than the geometric center hardness to define a positive gradient outer core layer and a shallow positive hardness gradient core.10-18-2012
20110124438GOLF BALL HAVING VISUALLY ENHANCED NON-UNIFORM THICKNESS INTERMEDIATE LAYER - A golf ball with at least one core layer, at least one intermediate layer, and at least one cover layer. Any combination of the layers of the golf ball may feature a visually enhancing means. The cover layer is preferably translucent and provides a view to the intermediate layer and/or the core layer. The intermediate layer has a non-uniform thickness. The core may comprise a non-spherical insert. The intermediate layer and the core layer may affect the spin rate of the golf ball. The intermediate layer may be used to indicate the alignment of the golf ball.05-26-2011
20110003651GOLF BALL LAYER HAVING REDUCED SURFACE HARDNESS AND METHOD OF MAKING SAME - The invention is directed to a golf ball comprising a core and a cover, wherein the core has a geometric center having a hardness (H01-06-2011
20110003650GOLF BALL - A golf ball including a core and at least one layer formed over the core. The layer can be an outer core layer, an intermediate layer including inner cover layers, or a cover. Either the core or any layer over the core can comprise a fully or partially neutralized polyester ionomer. The core comprises: a diameter of at least 1.30 inches, a compression of 50 or less; and a coefficient of restitution of 0.80 or greater at 125 ft/sec.01-06-2011
20080287217GOLF BALL MATERIAL AND GOLF BALL - A mixture having good thermal stability, flow and moldability and suitable as a golf ball-forming material is obtained when a base resin comprising a (metal ion-neutralized) olefin-unsaturated carboxylic acid-unsaturated carboxylate ternary random copolymer and optionally a (metal ion-neutralized) olefin-unsaturated carboxylic acid binary random copolymer is blended with specific proportions of a fatty acid and/or fatty acid derivative and a basic inorganic metal compound capable of neutralizing acidic groups left unneutralized in the base resin and fatty acid. Using the same material, high-rebound golf balls can be effectively manufactured.11-20-2008
20110045923MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core encased by a cover of one or more layer, which solid core has an inner core layer and an outer core layer. The inner core layer is formed primarily of a specific, highly neutralized, ionomeric resin composition, has a diameter of from 10 to 38 mm, and has a cross-sectional hardness difference of within ±5 between any two points on a cross-section formed by cutting the inner core layer in half. The outer core layer is formed of a rubber composition made primarily of polybutadiene rubber. The solid core has a diameter of from 30 to 42 mm. The sum of the hardnesses at the center of the inner core layer and at the surface of the outer core layer is set to a value in a range of from 130 to 170. Such a golf ball is able to achieve an increased distance.02-24-2011
20110212796GOLF BALL WITH MULTIPLE COVER LAYERS - A golf ball having a core and two or more cover layers, wherein the multiple cover layers are formed from materials that are substantially the same composition with the same Shore hardness, but are modified in some way to alter the processing or performance characteristics of the golf ball, or the layers have the same hardness and at least one cover layer is formed of a polymer blend including a polyurethane composition, and at least one cover layer is formed of a different polymer blend.09-01-2011
20120322583DUAL CORE GOLF BALL HAVING NEGATIVE-HARDNESS-GRADIENT THERMOPLASTIC INNER CORE AND SHALLOW POSITIVE-HARDNESS-GRADIENT THERMOSET OUTER CORE LAYER - A golf ball includes an inner core layer formed from a thermoplastic material. The inner core has a center hardness at the center that is greater than the surface hardness at the surface to define a negative hardness gradient. An outer core layer is disposed about the inner core. The outer core has a surface hardness that is greater than the surface hardness of the inner core to define a positive hardness gradient. An inner cover layer and an outer core layer are formed over the outer core layer. The negative hardness gradient of the inner core is about −1 to −5 Shore C, the positive hardness gradient of the outer core layer is less than 25 Shore C, the surface hardness of the outer core layer is about 45 Shore D to about 70 Shore D, and the surface hardness of the inner core is about 20 Shore D to about 60 Shore D.12-20-2012
20110237348GOLF BALL - An object of the present invention is to provide a golf ball that decrease the spin rate on the driver shots while suppressing the decrease in the spin rate on the approach shots in a golf ball having a urethane cover. The present invention provides a golf ball having a core consisting of a center and at least one intermediate layer covering the center, and a cover covering the core, wherein the cover contains polyurethane, and has a slab hardness of 85 or less in JIS A hardness, the core has a surface hardness of 60 or more in Shore D hardness, the intermediate layer has a thickness ranging from 0.5 mm to 2.0 mm, and a resin component constituting the intermediate layer has a hardness from 62 to 68 in Shore D hardness, a flexural modulus from 300 MPa to 500 MPa, and a maximum storage modulus E′ between −30° C. to 0° C. ranging from 1,000 MPa to 2,000 MPa.09-29-2011
20100234138MULTI-PIECE SOLID GOLF BALL - The present invention provides a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope layer has an inner layer and an outer layer. The core is formed primarily of a rubber material. The inner and outer envelope layers, the intermediate layer and the cover are each formed primarily of the same or different resin materials. The inner and outer envelope layers, intermediate layer and cover have thicknesses which satisfy the following conditions (i) and (ii):09-16-2010
20100234137MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball composed of a solid core, a cover, at least one intermediate layer situated therebetween, and a plurality of dimples on a surface of the ball. The diameter of the solid core, the deflection of the core when compressed under a final load of 130 kgf from an initial load of 10 kgf, the hardness at the center of the core, the hardness in a region 5 mm to 10 mm from the center of the core, the hardness 15 mm from the center of the core, and the surface hardness are set within specific ranges. The intermediate layer is composed primarily of a material obtained by mixing under applied heat a specific resin composition, and the thickness and material hardness of the intermediate layer, as well as the hardness difference between the surface of the solid core and the intermediate layer are set within specific ranges. The cover is formed primarily of polyurethane, and has a thickness and a material hardness set within specific ranges. The golf ball of the invention has an excellent flight performance, feel, controllability and scuff resistance.09-16-2010
20120100933MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope layer is formed of an inner envelope layer, an intermediate envelope layer and an outer envelope layer. The inner, intermediate and outer envelope layers, the intermediate layer and the cover are each formed primarily of a resin material which may be of the same or different types, and the core is formed primarily of a rubber material. The cover has a material hardness which is the same as or lower than the core center hardness. One of the inner layers has a material hardness which is higher than either or both of the cover material hardness and the average core hardness (defined as the arithmetic mean of the core surface hardness and the core center hardness). The golf ball, even when used by those golfers among professionals and skilled amateurs who, on striking a ball with a driver, tend to generate shots having a rather low spin rate and a low launch angle, has an excellent flight performance and also excellent controllability in the short game that are acceptable to such users. In addition, it has a good feel on impact and an excellent scuff resistance.04-26-2012
20100190578CASING LAYER FOR POLYURETHANE-COVERED AND POLYUREA-COVERED GOLF BALLS - This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.07-29-2010
20100167840GOLF BALL - An object of the invention is to provide a golf ball excellent in the durability at the normal and low temperatures, flight distance, direction stability and shot feeling on the shots. The present invention provides a golf ball comprising: a core consisting of a center having a diameter of 35 mm or less and a surrounding layer covering the center; at least one intermediate layer covering the core, said intermediate layer having a thickness ranging from 0.5 mm to 1.2 mm and a density of 1.10 g/cm07-01-2010
20100167841GOLF BALL AND PROCESS FOR PREPARING THE SAME - An object of the present invention is to provide a golf ball providing a great distance. Another object of the present invention is to provide a golf ball striking a balance between a flight distance on a driver shot and an approach performance on an approach shot while providing an excellent shot feeling. The present invention provides a golf ball comprising: a center, a cover and at least one intermediate layer disposed between the center and the cover, wherein at least one piece or one layer of the intermediate layer is formed from a high fluidity intermediate layer composition that contains (A) a polyamide resin composition having a flexural modulus in a range from 700 MPa to 4,000 MPa; (B) at least one member selected from the group consisting of an ethylene-(meth)acrylic acid binary copolymer, a metal-neutralized product of the binary copolymer, an ethylene-(meth)acrylic acid-(meth)acrylic acid ester ternary copolymer, and a metal-neutralized product of the ternary copolymer, and (C) a fluidity improving agent.07-01-2010
20110159997DUAL CORE GOLF BALL HAVING NEGATIVE-HARDNESS-GRADIENT THERMOPLASTIC INNER CORE AND STEEP POSITIVE-HARDNESS-GRADIENT THERMOSET OUTER CORE LAYER - A golf ball includes an inner core layer formed from a thermoplastic material comprising a highly-neutralized ionomer comprising a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer by 80% or greater. The inner core has a geometric center hardness less than its surface hardness to define a positive hardness gradient. An outer core layer is formed over the inner core and is formed from a substantially homogenous thermoset composition. The outer core layer has an interior hardness substantially less than an outer surface hardness to define a steep positive hardness gradient. An inner cover layer and an outer cover layer are formed over the outer core layer.06-30-2011
20110159996DUAL CORE GOLF BALL HAVING NEGATIVE-HARDNESS-GRADIENT THERMOPLASTIC INNER CORE AND SHALLOW POSITIVE-HARDNESS-GRADIENT THERMOSET OUTER CORE LAYER - A golf ball including a thermoplastic inner core and a thermoset outer core layer is described. The inner core has a surface hardness of 43 to about 65 Shore D and a center hardness of about 30 to 43 Shore D that is less than the surface hardness to define a positive hardness gradient. A cover includes an inner and outer cover layer. The thermoplastic inner core is formed from a highly-neutralized ionomer comprising a copolymer of ethylene and an α,β-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer by 80% or greater. The outer core layer includes a polybutadiene rubber and has a surface hardness greater than an interior hardness by about 6 to 11 Shore D points to define a shallow positive hardness gradient.06-30-2011
20110159995Golf Balls Containing Ionomers and Polyamines or Tertiary Polyamides - Provided herein are compositions comprising an ionomer and a polyamine or a tertiary polyamide. The polyamine and the tertiary polyamide have a molecular weight of greater than 500 Da and do not contain an ester moiety or a primary amine moiety. The polyamine comprises at least three moieties that are tertiary amines or hindered secondary amines, and the polyamide comprises tertiary amide moieties and no secondary or primary amide moieties. The compositions may optionally include a filler. Further provided are articles such as golf balls and films containing these compositions.06-30-2011
20110159994IONOMER COMPOSITIONS FOR GOLF BALLS - Certain disclosed embodiments of the present invention concern a golf ball, which includes a core comprising a center, an outer cover layer; and optionally one or more intermediate layers, and where at least one or more of the core, outer cover layer, or one or more intermediate layers if present, includes a styrene ionomer, such as a styrene anhydride copolymer, a basic salt of a styrene-α,β-unsaturated acid copolymer, or a styrene maleic anhydride copolymer. These styrene-based copolymers can be used in combination with additional polymer components.06-30-2011
20110159993IONOMER COMPOSITIONS FOR GOLF BALLS - Certain disclosed embodiments of the present invention concern a golf ball, including a core having a center, an outer cover layer, and optionally one or more intermediate layers, where at least one or more of the core, outer cover layer, or one or more intermediate layers if present, includes an isobutylene maleic anhydride copolymer having the general formula06-30-2011
20080254914Golf ball - The present invention provides a golf ball composed of a core, an outermost cover layer and one or more intermediate layer therebetween. At least one intermediate layer includes a mixture composed of a base polymer made of, in a specific ratio, (a) a metal ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer and/or a metal ion neutralization product of an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, (b) a thermoplastic elastomer selected from the group consisting of thermoplastic polyester elastomers, thermoplastic block copolymers and thermoplastic polyurethanes, and (c) a thermoplastic block copolymer containing end blocks modified by a functional group having reactivity with an ionomer resin, both end blocks being formed of different comonomers. The mixture also includes (e) an organic acid of 18 to 40 carbons or a derivative thereof, and (f) a metal ion source selected from the group consisting of alkali metals, alkaline earth metals and transition metals. The mixture has an optimized ratio between the melt viscosities of (b) and (a) as measured under a shear rate of 6,000 sec10-16-2008
20130172116MULTI-PIECE GOLF BALL - A multi-piece golf ball excellent in resilience and controllability includes a core composed of a center and an envelope layer covering the center and at least one cover covering the core, wherein the center is formed from a center composition containing (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of the binary copolymer, (a-3) a ternary copolymer composed of the binary copolymer components and an β,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of the ternary copolymer components and (B) a basic metal salt of a fatty acid, and wherein the envelope layer is formed from a rubber composition.07-04-2013
20080220900GOLF BALL - The invention provides a golf ball composed of a core, an intermediate layer which encases the core, and a cover which encases the intermediate layer. The core has a diameter of 36 to 40 mm and a deflection of 3.5 to 4.2 mm, and the intermediate layer has a Shore D hardness of 45 to 55 and a thickness of 0.6 to 1.6 mm. The cover has a Shore D hardness of 63 to 66 and a thickness of 0.6 to 1.6. The ball as a whole has a deflection of 2.6 to 3.5 mm, and the intermediate layer and cover have a combined thickness of 1.8 to 2.8 mm. The ball has a hardness design such that the Shore D hardnesses of the ball components satisfy the relationship09-11-2008
20090156330MULTI-LAYER GOLF BALL - Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises one or more polyurethane materials. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less, and particularly, 40 yards or less, while maintaining good distance and average spin on full shots.06-18-2009
20110275456DUAL CORE GOLF BALL HAVING POSITIVE-HARDNESS-GRADIENT THERMOPLASTIC INNER CORE AND SHALLOW NEGATIVE-HARDNESS-GRADIENT OUTER CORE LAYER - A golf ball includes a thermoplastic inner core layer having a geometric center hardness less than a surface hardness to define a “positive hardness gradient.” An outer core layer is disposed about the inner core, the outer core being formed from a thermoset rubber composition and having a surface hardness less than a hardness at a point about 0.5 to 2 mm from an interface between the inner core and the outer core layer to define a shallow “negative hardness gradient.” An inner cover layer is formed over the outer core layer and an outer cover layer is formed over the inner cover layer. The “positive hardness gradient” of the inner core is up to about 10 Shore C and the shallow “negative hardness gradient” of the outer core layer is less than about 10 Shore C.11-10-2011
20100317463GOLF BALLS HAVING LAYERS MADE FROM FUNCTIONALIZED ETHYLENE COPOLYMERS - Golf balls having a core and containing at least one surrounding layer made from a functionalized ethylene copolymer having a linear or substantially linear structure are provided. The core may be made of a polybutadiene rubber material. The functionalized ethylene copolymer composition may be used to form any layer in the golf ball structure such as, for example, an outer core, intermediate layer, inner cover, and/or outer cover. The composition may be blended with ionomeric or non-ionomeric resins such as polyamides, polyurethanes, polyureas, polycarbonates, polyesters, and polyacrylates to form the layer. The resulting layers provide the golf ball with improved resiliency and impact durability.12-16-2010
20100317462GOLF BALLS COMPRISING IONOMERS FORMED FROM POST-NEUTRALIZATION OF IN SITU Na/Zn IONOMERS WITH Li OR Ca CATIONS - The present invention is directed to compositions and methods relating to golf balls. In one embodiment, a golf ball can include a core and/or intermediate layer formed from a partially-neutralized in situ ionomer that is neutralized to a first level by a first cation, and is subsequently neutralized by a second, different cation to produce a further, more highly-neutralized ionomer. The further-neutralized ionomer exhibits decreased compression (softer) and/or increased COR (faster) compared to a comparative golf ball that contains a core or layer that is formed from an ionomer that is not subsequently neutralized with a second cation.12-16-2010
20130157779GOLF BALL COMPOSITION - This invention pertains to a golf ball which includes a core, optionally one or more intermediate layers; and an outer cover layer. The outer cover layer and/or one or more intermediate layers includes a blend of a) 2 to 60 wt % (based on the total weight of the blend composition) of a cyclic olefin polymer which includes a norbornene-based monomer having the general formula;06-20-2013
20130157780GOLF BALL CONTAINING LIQUID CRYSTAL POLYMER - This invention pertains to a golf ball which includes a core, optionally one or more intermediate layers; and an outer cover layer. The outer cover layer and/or one or more intermediate layers (if present) includes a blend of from about 2 to about 60 wt % (based on the total weight of the blend composition) of an liquid crystalline polymer (“LCP”) having the general formula;06-20-2013
20120283039COMPOSITIONS OF DICARBOXYLIC ACID MODIFIED IONOMERS - Disclosed is a composition comprising, or produced from, a dicarboxylic acid-modified ionomer. Also disclosed are articles produced from the composition, such as golf balls. A particular multi-piece golf ball has an intermediate layer between the cover and the core, wherein the intermediate layer comprises the dicarboxylic acid-modified ionomer composition.11-08-2012
20130157778GOLF BALL - This invention pertains to a golf ball which includes a core, optionally one or more intermediate layers; and an outer cover layer. The outer cover layer and/or one or more intermediate layers includes a blend of a) about 2 to about 40 wt % (based on the total weight of the blend composition) of an aramid polymer and b) about 60 to about 98 wt % (based on the total weight of the blend composition) of one or more additional polymer components. The blend composition has a melt flow index (MFI) from about 1 to about 80 g/10 min., a material hardness of about 30 to about 90 Shore D, and a flex modulus of about 10 to about 120 kpsi.06-20-2013
20130184101GOLF BALL - A golf ball 07-18-2013
20130123044GOLF BALL - An object of the present invention is to provide a golf ball traveling a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, (d) a carboxylic acid having 1 to 14 carbon atoms and/or a salt thereof, and (e) a halogen-substituted thiophenol and/or a metal salt thereof as an organic sulfur compound, provided that the rubber composition further contains (f) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.05-16-2013
20110312441DUAL CORE GOLF BALL HAVING A SHALLOW "POSITIVE HARDNESS GRADIENT" THERMOPLASTIC INNER CORE AND A STEEP "POSITIVE HARDNESS GRADIENT" THERMOSET OUTER CORE LAYER - A golf ball including a highly-neutralized thermoplastic inner core layer having a geometric center hardness less than a surface hardness to define a first hardness gradient, an outer core layer formed from a homogenous thermoset composition and having an interior hardness substantially less than an outer surface hardness to define a second hardness gradient, an inner cover layer, and an outer cover layer. Both the first and second hardness gradients are positive and a slope of the second hardness gradient is greater than a slope of the first hardness gradient to define a shallow hardness gradient inner core and a steep hardness gradient outer core layer.12-22-2011
20120289364REINFORCING IONOMERIC MATERIALS USING MULTI-FUNCTIONAL MODIFIER WITH ACID FUNCTIONAL GROUP - A golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a polyurethane ionomer made by reacting a multi-functional modified ionomer with an isocyanate, wherein the multi-functional modified ionomer is a product of reacting an ionomer with a multi-functional modifier wherein the multi-functional modifier includes at least one carboxyl functional group and at least two additional types of functional groups.11-15-2012
20130196789GOLF BALL CONSTRUCTION - The present invention relates to golf balls having a low specific gravity core with specific gravities less than 1.05 and one or more high specific gravity intermediate layers with specific gravities greater than or equal to 1.05. The resulting golf balls exhibit significantly decreased spin and long distance and have the added benefit that the high specific gravity intermediate layer can be easily injection molded around the low specific gravity core.08-01-2013
20090186719MULTI-LAYER GOLF BALL HAVING VELOCITY GRADIENT FROM FASTER CENTER TO SLOWER COVER - The present invention is directed to multi-layer golf balls having a center, a cover layer, and at least one intermediate layer between the core and the cover layer. The core, the at least one intermediate layer and the cover are constructed to have different initial velocities and COR such that the gradient of the initial velocities and COR progress from a faster center to a slower cover.07-23-2009
20120094783GOLF BALL - The present invention provides a golf ball having a center and at least one intermediate layer covering the center and a cover, wherein at least one of the intermediate layer is formed from a composition comprising, as a resin component, (A) a polyamide copolymer containing (a-1) a polymerized fatty acid, (a-2) sebacic acid and/or azelaic acid, (a-3) a polyamine component as an essential component, and (B) at least one member selected from (b-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid, (b-2) a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid, (b-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid ester, and (b-4) a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid ester.04-19-2012

Patent applications in class Diverse layer between spherical core and cover