Patent application number | Description | Published |
20090018288 | CROSSLINKED OLEFIN POLYMERS AND PROCESS FOR PRODUCTION THEREOF - Crosslinked olefin polymers which are reduced in stickiness and improved in rigidity, heat resistance, light resistance, and water resistance while retaining the molding properties such as injection moldability, spinnability, film-forming properties and the physical properties such as toughness (including elongation and break strength) and tackiness; and a process for the production thereof. Crosslinked olefin polymers which are obtained by reacting an α-olefin polymer produced by polymerization of at least one α-olefin having 6 or more carbon atoms or polymerization of at least one α-olefin having 6 or more carbon atoms with at least one other α-olefin with a crosslinking agent and which satisfy the following requirements: (1) the content of units of α-olefins having 6 or more carbon atoms is 50 mol % or more, (2) the molecular weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) is 7.0 or more in terms of polystyrene, (3) the content of components having weight-average molecular weights (Mw) of 10 | 01-15-2009 |
20090098786 | POLYPROPYLENE RESIN, FIBER, AND NONWOVEN FABRIC - A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF). | 04-16-2009 |
20100022733 | (METH)ACRYLATE COPOLYMER FOR SYRUP AND RESIN COMPOSITION THEREOF - The present invention provides a copolymer for syrup, characterized by being formed from (A) 1 to 60 mass % of at least one (meth)acrylate compound selected from among a (meth)acrylate-modified silicone oil, an alkyl (meth)acrylate, a monoalkylene glycol (meth)acrylate, and a polyalkylene glycol (meth)acrylate, and (B) 99 to 40 mass % of a (meth)acrylate compound having a C≧6 alicyclic hydrocarbon group bonded thereto via an ester bond; a (meth)acrylate composition containing a (meth)acrylate monomer and 1 to 60 mass % of the (meth)acrylate copolymer for syrup; and a cured product of the composition. The (meth)acrylate copolymer for syrup of the present invention has excellent solubility, particularly in a (meth)acrylate compound having an alicyclic ester substituent, and a (meth)acrylate resin composition containing the copolymer provides a stable cured product having high transparency and high resistance to UW rays and heat. Thus, the cured product is suitably used as a material for lenses, illumination devices, automobiles, displays, optical-semiconductors, etc. | 01-28-2010 |
20100190405 | ELASTIC NONWOVEN FABRIC, PROCESS FOR PRODUCING THE SAME, AND TEXTILE PRODUCT COMPRISING THE ELASTIC NONWOVEN FABRIC - (1) An elastic nonwoven fabric and a fiber product using the elastic nonwoven fabric, the elastic nonwoven fabric containing a crystalline resin composition containing low crystalline polypropylene and high crystalline polypropylene, the low crystalline polypropylene satisfying items (a) and (b) below, and a crystallization temperature (Tc) of the crystalline resin composition measured with a differential scanning calorimeter (DSC) being from 20 to 100° C.: | 07-29-2010 |
20100234527 | OPTICAL SEMICONDUCTOR ENCAPSULATING MATERIAL - The present invention provides a sealant material for an optical semiconductor containing (A) one or more kinds of a (meth)acrylic compound selected from a (meth)acrylate-modified silicone oil, a long chain alkyl (meth)acrylate, and a polylakylene glycol (meth)acrylate having the number average molecular weight of 400 or more, (B) a (meth)acrylate compound having an ester bond with an alicyclic hydrocarbon group having 6 or more carbon atoms, and (C) a radical polymerization initiator; and an optoelectronic conversion element and an optoelectronic conversion device using thereof. The sealant material for an optical semiconductor of the present invention provides a cured product having excellent characteristics in transparency, stability to UV light and heat, yellowing resistance, and adhesion performance, and thus may be suitably used as a sealant material for a light emitting element, a light receiving element and the like in an optical semiconductor device (semiconductor light emitting device), especially as a transparent sealant material for optical semiconductors such as LED and the like. | 09-16-2010 |
20100324246 | RESIN FOR OPTICAL COMPONENT, RAW MATERIAL COMPOSITION USED FOR RESIN FOR OPTICAL COMPONENT, AND OPTICAL COMPONENT - Provided are a resin for an optical component, which has heat resistance, does not suffer from yellowing because of its stability against heat, and is excellent in transparency and workability; a raw material composition used for the resin for an optical component; and an optical component. Specifically, provided is a resin for an optical component containing a (meth)acrylate compound unit (A1), in which a hydrocarbon group containing an adamantane structure is ester-bonded, and a (meth)acrylate compound unit (B1) having a polyfunctional group, which is other than the unit (A1). Also, provided is a raw material composition used for a resin for an optical component, which contains a (meth)acrylate compound (A2) in which a hydrocarbon group containing an adamantane structure is ester-bonded, and a (meth)acrylate compound (B2) having a polyfunctional group, which is other than the compound (A2). Further, provided is an optical component which is obtained by polymerizing and molding the raw material composition. | 12-23-2010 |
20110236683 | METHOD FOR PRODUCING POLYPROPYLENE ELASTIC FIBER AND POLYPROPYLENE ELASTIC FIBER - Provided are a method of producing an elastic fiber, including the steps of: subjecting a raw material to melt extrusion with a spinning nozzle at 100 to 300° C.; cooling the fiber after the melt extrusion in a water bath at 0 to 50° C.; and winding the cooled fiber, in which a specific low-crystalline polypropylene is used as the raw material, and an elastic fiber having a core-sheath bicomponent structure, which is obtained by using a specific low-crystalline polypropylene. | 09-29-2011 |
20110288231 | RAW-MATERIAL COMPOSITIONS FOR RESIN FOR OPTICAL PART, RESIN FOR OPTICAL PART, AND OPTICAL PART - Provided are a resin composition containing a (meth)acrylate compound (A) having a specific structure and a rigid moiety, and a (meth)acrylate compound (B) having a flexible moiety; a resin composition further containing a silane-based (meth)acrylate compound (C-1), an antioxidant (C-2) or an aliphatic compound (C-3) having a specific structure; and an optical component. A resin for an optical component can be produced from those resin compositions, the resin having excellent transparency, causing no cracks, being stable against heat without causing yellowing, and having a low coefficient of thermal expansion, a low water content, excellent shape stability, with excellent mold releasability, and excellent adhesiveness with a coating material that suppresses surface reflection and improves transmittance. | 11-24-2011 |
20120208422 | SPUN-BONDED NONWOVEN FABRIC AND FIBER PRODUCT - The present invention provides a spunbond nonwoven fabric made of a specific crystalline resin composition having a melt flow rate of 25 to 80 g/10 min and a melting endotherm ΔH of 65 to 100 J/g. More particularly, the invention provides a polypropylene spunbond nonwoven fabric having a very small fiber diameter and providing an excellent feel to the touch, and a polypropylene spunbond nonwoven fabric exhibiting high softness. | 08-16-2012 |
20120302982 | NON-WOVEN POLYPROPYLENE FABRIC - Provided is a non-woven fabric produced by using a polypropylene-based resin composition containing a specific low-crystalline polypropylene. The non-woven fabric is a non-woven fabric obtained by achieving reductions in denier values of fibers, the non-woven fabric being excellent in dispersibility of the fibers. | 11-29-2012 |
20120322330 | ELASTIC NONWOVEN CLOTH AND FIBER PRODUCT - To provide an elastic nonwoven cloth that is excellent in elastic recovery property and has pleasant texture without stickiness, and a fiber product using the elastic nonwoven cloth, by an elastic nonwoven cloth containing fibers that are spun at a spinning speed of from 500 to 2,500 m/min and contain a low crystalline polypropylene that satisfies (a) [mmmm]=20 to 60% by mol, (b) [rrrr]/(1−[mmmm])≦0.1, (c) [rmrm]>2.5% by mol, (d) [mm]×[rr]/[mr] | 12-20-2012 |
20130237660 | (METH)ACRYLATE COMPOSITION - Provided is a (meth)acrylate composition containing: (A) at least one (meth)acrylate compound selected from the group consisting of a (meth)acrylate-modified silicone oil, a (meth)acrylate having a long-chain aliphatic hydrocarbon group, and a polyalkylene glycol (meth)acrylate having number-average molecular weight of not less than 400; (B) a (meth)acrylate compound to which an alicyclic hydrocarbon group having 6 or more carbon atoms is ester-linked; (C) (meth)acrylic acid or a (meth)acrylate compound having a polar group; (D) a radical polymerization initiator; and (E) a white pigment. | 09-12-2013 |
20130309931 | METHOD FOR PRODUCING SPUN-BONDED NONWOVEN FABRIC AND SPUN-BONDED NONWOVEN FABRIC - The method of producing a spunbond nonwoven fabric promotes the bleed out of the additive, which has pleasant texture such as tactile feel and excellent flexibility. The spunbond nonwoven fabric is obtained by this method. Specifically, (1) the method of producing a spunbond nonwoven fabric includes annealing a spunbond nonwoven fabric formed by using a crystalline resin composition (I) containing a low crystalline olefin polymer (a) with an elastic modulus of 10 to 450 MPa in a content of 1 to 50% by mass, a high crystalline olefin polymer (b) with an elastic modulus of 500 to 2,000 MPa, the content of the component (b) being the rest, and an additive (c) in a content of 1 to 20,000 ppm by mass. Furthermore, (2) the method of producing a spunbond nonwoven fabric includes annealing a spunbond nonwoven fabric formed by using a core-sheath composite fiber containing a crystalline resin composition (I) as the sheath component; and a crystalline resin composition (II) as the core component containing a high crystalline olefin polymer (b′) with an elastic modulus of 500 to 2,000 MPa. | 11-21-2013 |
20130323995 | NONWOVEN FABRIC AND TEXTILE PRODUCT - The nonwoven fabric has excellent secondary fabrication properties, specially, low temperature heat-sealing properties. The textile product is formed by using the nonwoven fabric. More specifically, the nonwoven fabric includes one or more layers, wherein the nonwoven fabric made of one layer, or at least one layer of the nonwoven fabric composed of two layers, or at least one layer of the two outermost layers of the nonwoven fabric of multi-layer consisting of three or more layers is formed by using a crystalline resin composition containing 1 to 99% by mass of a low crystalline olefin polymer satisfying the following expression (a): ΔH≧6×(Tm−140° C.) wherein ΔH represents a melt endotherm, and Tm represents a melting point. | 12-05-2013 |