Abstract: Disclosed are a thermoplastic elastomer composition and a composite molded body. Specifically disclosed is a thermoplastic elastomer composition containing the following component (A1), component (B1) and component (C1). Component (A1): 70-90% by weight of a propylene polymer unit (?1) obtained in a first step by polymerizing a monomer mainly composed of propylene, and an ethylene copolymer unit obtained in a second step by copolymerizing ethylene with propylene and/or an ?-olefin having 4 or more carbon atoms Component (B1): an ethylene-propylene copolymer rubber having a Mooney viscosity (ML1+4, 125° C.) of 20-100 and a weight ratio between the monomer unit derived from ethylene and the monomer unit derived from propylene of from 30/70 to 75/25 Component (C1): an ethylene copolymer as a copolymer of ethylene and an ?-olefin having 4 or more carbon atoms.

Abstract: A thermoplastic elastomer is provided that includes a propylene-based resin and an ethylene-?-olefin copolymer rubber, and has a crystallization time at 130° C. measured by differential scanning calorimeter (DSC) of from 250 to 1,000 sec. There are also provided a method for producing a molded body, the method including a step of preparing the thermoplastic elastomer composition and a step of injection molding the thermoplastic elastomer composition, and a molded body produced by the method.

Abstract: The present invention provides a thermoplastic elastomer composition comprising: 100 parts by weight of component (A), 10 to 100 parts by weight of component (B), 50 to 200 parts by weight of component (C), and 5 to 30 parts by weight of component (D). Component (A) is a propylene polymer having a melting point of 155° C. or more. Component (B) is a crystalline propylene-ethylene copolymer. Component (C) is an ethylene-?-olefin rubber having Mooney Viscosity of 30 to 100(ML1+4, 125° C.). Component (D) is a hydrogenated product of block copolymer comprising blocks of aromatic vinyl compound units and blocks of conjugated diene compound units.

Abstract: A thermoplastic elastomer composition is disclosed comprising about 100 parts by weight of component (A) and about 20 to about 100 parts by weight of component (B). Component (A) is a polypropylene resin comprising about 60 to about 90% by weight of component (i) and about 40 to about 10% by weight of component (ii). Component (i) is a propylene homopolymer or copolymer of propylene and at least one monomer group consisting of ethylene and an ?-olefin having 4 or more carbon atoms. Component (ii) is an ethylene-?-olefin copolymer comprising about 20 to about 50% by weight ethylene units. Component (B) is an ethylene-?-olefin elastomer comprising about 60 to about 85% by weight ethylene units and about 40 to about 15% by weight of ?-olefin units. Component (B) has a Mooney stress relaxation area of from 180 to 300.

Abstract: The present invention provides a thermoplastic elastomer composition comprising: 100 parts by weight of component (A), 10 to 100 parts by weight of component (B), 50 to 200 parts by weight of component (C), and 5 to 30 parts by weight of component (D). Component (A) is a propylene polymer having a melting point of 155° C. or more. Component (B) is a crystalline propylene-ethylene copolymer. Component (C) is an ethylene-?-olefin rubber having Mooney Viscosity of 30 to 100(ML1+4, 125° C.). Component (D) is a hydrogenated product of block copolymer comprising blocks of aromatic vinyl compound units and blocks of conjugated diene compound units.

Abstract: Disclosed are a thermoplastic elastomer composition and a composite molded body. Specifically disclosed is a thermoplastic elastomer composition containing the following component (A1), component (B1) and component (C1). Component (A1): 70-90% by weight of a propylene polymer unit (?1) obtained in a first step by polymerizing a monomer mainly composed of propylene, and an ethylene copolymer unit obtained in a second step by copolymerizing ethylene with propylene and/or an ?-olefin having 4 or more carbon atoms Component (B1): an ethylene-propylene copolymer rubber having a Mooney viscosity (ML1+4, 125° C.) of 20-100 and a weight ratio between the monomer unit derived from ethylene and the monomer unit derived from propylene of from 30/70 to 75/25 Component (C1): an ethylene copolymer as a copolymer of ethylene and an ?-olefin having 4 or more carbon atoms.

Abstract: A thermoplastic elastomer is provided that includes a propylene-based resin and an ethylene-?-olefin copolymer rubber, and has a crystallization time at 130° C. measured by differential scanning calorimeter (DSC) of from 250 to 1,000 sec. There are also provided a method for producing a molded body, the method including a step of preparing the thermoplastic elastomer composition and a step of injection molding the thermoplastic elastomer composition, and a molded body produced by the method.

Abstract: A thermoplastic elastomer composition is provided that contains 1 to 20 parts by weight of component (E), wherein the thermoplastic elastomer composition is provided by a process for producing a thermoplastic elastomer composition including the steps of: (1) dynamically heat treating 5 to 25 parts by weight of component (A), 10 to 70 parts by weight of component (B), 3 to 25 parts by weight of component (C), and 10 to 70 parts by weight of component (D) in the presence of a crosslinking agent to obtain a mixture, wherein component (A) is a polypropylene resin, component (B) is an ethylene-?-olefin copolymer rubber, component (C) is a hydrogenated vinyl aromatic compound-conjugated diene block copolymer, component (D) is a mineral oil, component (E) is an inorganic filler having an aspect ratio of at least 2, and the total amount of components (A) to (D) is 100 parts by weight.

Abstract: A propylene-1-butene copolymer wherein a Shore A-scale hardness measured according to ASTM D2240 is not more than 70 and an intrinsic viscosity [.eta.] measured in axylene solvent at the temperature of 70.degree. C. is not less than 0.3 and which shows no crystalline melting peak and no crystallization peak in differential scanning calorimeter (DSC) mesurement.

Abstract: Disclosed is a thermoplastic resin composition comprising a polyphenylene ether and a polyamide and excellent in impact strength wherein an impact strength modifier having structure A--B--A (A or B is styrene) is partially dispersed in said polyphenylene ether and has layered or spherical structure of about 0.02-0.07 .mu.m.A process for producing the thermoplastic resin composition is also disclosed which comprises (1) previously melt kneading (i) at least one compatibilizing agent in an amount effective for compatibilization and (ii) a polyphenylene ether, and then (2) adding (iii) a polyamide in an amount necessary for formation of continuous phase and (iv) an impact strength modifier having structure A--B--A (A or B is styrene) and melt kneading the mixture at a maximum shear rate of 700 sec.sup.-1 or more.

Abstract: Disclosed is a thermoplastic resin composition which comprises:(A) 10-90 parts by weight of a polyphenylene ether resin,(B) 90-10 parts by weight of a polyamide resin,(C) 1-100 parts by weight of a fluorocarbon resin,(D) 0-30 parts by weight of a compatibilizing agent, and(E) 0-100 parts by weight of a rubber-like material, amounts of (C), (D) and (E) being based on 100 parts by weight in total of (A) and (B).The invention provides a thermoplastic resin composition comprising a polyphenylene ether resin and a polyamide resin improved in heat resistance, impact resistance, and flowability, lowered in frictional coefficient and markedly improved in critical PV value by adding a fluorocarbon resin to a PPE/nylon alloy. Further provided is a method for producing a thermoplastic resin composition comprising a polyphenylene ether resin and a polyamide resin which is much improved in slidability.