BLOCK COPOLYMER COMPOSITION, FILM, AND PROCESS FOR PRODUCING BLOCK COPOLYMER COMPOSITION

摘要

A block copolymer composition comprising a block copolymer (A) represented by general formula (A) and a block copolymer (B) represented by general formula (B), wherein the weight ratio of the block copolymer (A) to the block copolymer (B) (A/B) is 36/64 to 85/15. Ar1a-Da-Ar2a    (A)    (Arb-Db)n-X    (B) [In general formulae (A) and (B), Ar1a and Arb independently represent an aromatic vinyl polymer block having a weight average molecular weight of 6000 to 15000; Ar2a represents an aromatic vinyl polymer block having a weight average molecular weight of 40000 to 400000; Da and Db independently represent a conjugated diene polymer block having a vinyl bond content of 1 to 20 mol%; X represents a residue of a coupling agent; and n represents an integer of 3 or more.]