BLOCK COPOLYMER AND HYDROGENATED PRODUCT THEREOF

摘要

Disclosed is a block copolymer having a polymer block A and a polymer block B. The polymer block A is mainly composed of an aromatic vinyl compound unit, and the aromatic vinyl compound unit contains a styrene unit wherein an alkyl group, which has at least one functional group selected from the group consisting of a carboxyl group and groups derived therefrom, is bonded with a benzene ring. The polymer block B is mainly composed of a conjugated diene unit. Also disclosed is a hydrogenated product of such a block copolymer.