| abstract |
A thermoplastic elastomer composition comprising (I) 100 parts by weight of at least one block copolymer formed by addition polymerization which is selected among block copolymers which comprise a polymer block (A) consisting of aromatic vinyl units and a polymer block (B) consisting of conjugated diene compound units and which have been crosslinked in the polymer block (A) preferably with a structural unit derived from a (C 1 -C 8 alkyl)styrene and/or functional group and among products of hydrogenation of the copolymers, (II) 10 to 300 parts by weight of a polyolefin, and (III) 0 to 300 parts by weight of a softener (III) for rubbers; and a process for producing the composition. The composition has excellent strain recovery at high temperatures and satisfactory moldability, is flexible, and has satisfactory rubber properties. It is effectively useable in various applications. |