Patent ID: 9708433
Date: 2017-07-18
CPC Classifications: C08F,C08K,C08L,Y10T

Claim:
1. A method for producing a thermoplastic elastomer composition, the method comprising a step of dynamically vulcanizing 50 to 90% by weight of (A) an oil-extended ethylene-α-olefin-based copolymerized rubber and 10 to 50% by weight of (B) a propylene-based resin, where the total amount of the oil-extended ethylene-α-olefin-based copolymerized rubber (A) and the propylene-based resin (B) is taken as 100% by weight, in the presence of a crosslinking agent, thereby obtaining a thermoplastic elastomer, wherein the oil-extended ethylene-α-olefin-based copolymerized rubber (A) comprises 100 parts by weight of an ethylene-α-olefin-based copolymer rubber having a Mooney viscosity (ML a step of kneading 100 parts by weight of the thermoplastic elastomer and 15 to 120 parts by weight of (C) an ethylene-based copolymer comprising ethylene units, unsaturated carboxylic acid units, and unsaturated ester compound units, thereby obtaining the thermoplastic elastomer composition.