Bulpett, MA
David Bulpett, Boston, MA US
Patent application number | Description | Published |
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20150105180 | Dual Core Golf Ball Having Negative-Hardness-Gradient Thermoplastic Inner Core And Steep Positive-Hardness-Gradient Thermoset Outer Core Layer - A golf ball includes a thermoplastic HNP inner core layer having a center hardness less than the surface hardness to define a positive hardness gradient. An outer core layer is disposed about the inner core and is formed from a thermoset rubber composition. The core layer has an inner surface hardness less than the outer surface hardness to define a positive hardness gradient. Inner and outer cover layers are disposed about the outer core layer. The HNP composition includes an acid copolymer of ethylene and an α,β-unsaturated carboxylic acid; a non-acid polymer comprising polyolefins, polyamides, polyesters, polyethers, polyurethanes, metallocene-catalyzed polymers, single-site catalyst polymerized polymers, ethylene propylene rubber, ethylene propylene diene rubber, styrenic block copolymer rubbers, alkyl acrylate rubbers, or functionalized derivatives thereof; an organic acid or salt thereof; and a cation source in an amount sufficient to neutralize at least about 80% of the acid groups. | 04-16-2015 |
20150141167 | Dual Core Golf Ball Having Negative-Hardness-Gradient Thermoplastic Inner Core And Steep Positive-Hardness-Gradient Thermoset Outer Core Layer - A golf ball comprising an inner core layer including a thermoplastic material and having a geometric center hardness less than the surface hardness to define a positive hardness gradient. An outer core layer is formed over the inner core. The outer core includes a thermoset rubber composition and has an inner surface hardness less than an outer surface hardness to define a positive hardness gradient. A cover layer is formed over the outer core layer. The cover layer includes an inner cover layer and an outer cover layer. The thermoplastic material of the core includes an acid copolymer of ethylene and an α,β-unsaturated carboxylic acid, optionally a softening monomer comprising alkyl acrylate or methacrylate; a plasticizer; an organic acid or salt thereof; and a cation source present in an amount sufficient to neutralize from about 70 to about 100% of all acid groups present in the material. | 05-21-2015 |
David A. Bulpett, Fairhaven, MA US
Patent application number | Description | Published |
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20090286628 | GOLF BALL HAVING A HARD OUTER SKIN - Golf balls having a hard outer skin produced from a material that includes crosslinks in both the hard and soft segments of the polymer backbone that improve the crosslink density. Compositions formed from polyurethane and/or polyurea prepolymers that are first cured with a curative blend including an isocyanate-reactive component to crosslink the hard segment and then exposed to a free radical initiator and radiation to crosslink the soft segments are used in an outer layer of a golf ball, a unitary golf ball, or other golf ball constructions. | 11-19-2009 |
20090286629 | GOLF BALL HAVING A COVER LAYER WITH A PURPOSED HARDNESS GRADIENT - Compositions for golf balls that include polyurethane and/or polyurea linkages and that are crosslinked in the soft segments of the polymer backbone to improve the crosslink density and effect a hardness gradient throughout the molded article. | 11-19-2009 |
20120080824 | CAST POLYURETHANE AND POLYUREA COVERS FOR GOLF BALLS - Compositions for golf balls that include thermoset polyurethane and/or thermoset polyurea In particular, the compositions of the invention, which are based on a polyurethane and/or polyurea, have improved crosslink density and hardness from crosslinking after the curative step. | 04-05-2012 |
20120100934 | BLENDS OF LINEAR AND BRANCHED NEODYMIUM-CATALYZED RUBBER FORMULATIONS FOR USE IN GOLF BALLS - The invention relates to golf ball formulations formed from blends of linear and branched polybutadienes catalyzed with neodymium that have improved properties and processing characteristics. Golf ball components may be formed from the blends to provide high coefficient of restitution. | 04-26-2012 |
20140080636 | BLENDS OF LINEAR AND BRANCHED NEODYMIUM-CATALYZED RUBBER FORMULATIONS FOR USE IN GOLF BALLS - The invention relates to golf ball formulations formed from blends of linear and branched polybutadienes catalyzed with neodymium that have improved properties and processing characteristics. Golf ball components may be formed from the blends to provide high coefficient of restitution. | 03-20-2014 |
20140308444 | METHODS FOR MAKING POLYUREA AND POLYURETHANE POLYMERS AND GOLF BALLS PREPARED THEREFROM - Methods for making golf balls having a cover made from polyurea and polyurethane compositions are provided. The methods for making the polyurea and polyurethane composition involve preparing an amine-terminated or hydroxyl-terminated first prepolymer by reacting a first isocyanate compound with a stoichiometric excess of polyamine or polyol (depending on the type of prepolymer desired). The first prepolymer is then reacted with a stoichiometric excess of a second isocyanate compound to form an isocyanate-terminated second prepolymer. The second prepolymer is then reacted with a chain extender. | 10-16-2014 |