Patent ID: 8598271

Claim:
A block copolymer composition comprising a block copolymer A represented by the following Formula (A) and a block copolymer B represented by the following Formula (B), wherein a weight ratio (A/B) between the block copolymer A and the block copolymer B is 36/64 to 85/15: Ar 1 a −D a −Ar 2 a (A) ( Ar b −D b ) n −X (B), in the Formulae (A) and (B), Ar1 a and Ar b each represent an aromatic vinyl polymer block having a weight average molecular weight of 6,000 to 15,000; Ar2 a represents an aromatic vinyl polymer block having a weight average molecular weight of 40,000 to 400,000; D a and D b each represent a conjugated diene polymer block having a vinyl bond content of 1 mol % to 20 mol %; X represents a residue of a coupling agent; and n represents an integer of 3 or greater.