Patent ID: 7253233

Claim:
An elastomer composition containing: a rubber component (A) containing at least one or more kinds of rubbers selected from the group consisting of butyl rubber (IIR), butadiene rubber (BR), isoprene rubber (IR), chloroprene rubber (CR), natural rubber (NR), 1,2-polybutadiene, acrylonitrile-butadiene rubber (NBR) and EPDM rubber; a mixture composition (B) containing hydrogenated styrene thermoplastic elastomer and olefin resin; and a styrene thermoplastic elastomer (C) having double bonds partly left, wherein said styrene thermoplastic elastomer (C) is blended at a ratio of not less than 2 parts by weight and not more than 100 parts by weight with respect to 200 parts by weight of said mixture composition (B), and said rubber component (A) is dynamically crosslinked by a resin crosslinking agent, and said rubber component (A) is dispersed by dynamic crosslinking in said mixture composition (B) having said styrene thermoplastic elastomer (C) dispersed therein, and said hydrogenated styrene thermoplastic elastomer of mixture composition (B) does not have double bonds and does not react with resin vulcanizing agents, and said mixture composition (B) is blended at a ratio of not less than 2 parts by weight and not more than 100 parts by weight with respect to 100 parts by weight of said rubber component (A), and wherein the weight ratio of hydrogenated styrene thermoplastic elastomer and olefin resin in said mixture composition (B) is (hydrogenated styrene thermoplastic elastomer:olefin resin) equals (100:0.1) to (2:50).