Patent ID: 7279532
Filing Date: 2007-10-09
Classification: C08F

Abstract:
1. A modified hydrogenated copolymer comprising: a hydrogenated copolymer obtained by hydrogenating an unhydrogenated copolymer comprising conjugated diene monomer units and vinyl aromatic monomer units, said unhydrogenated copolymer having at least one polymer block (H) of said vinyl aromatic monomer units, and a functional group-containing modifier group bonded to said hydrogenated copolymer, said modified hydrogenated copolymer having the following characteristics (1) to (4): (1) a content of said vinyl aromatic monomer units of from more than 60% by weight to less than 90% by weight, based on the weight of said hydrogenated copolymer, (2) a content of said polymer block (H) of from 0.1 to 40% by weight, based on the weight of said unhydrogenated copolymer, (3) a weight average molecular weight of from more than 100,000 to 1,000,000, and (4) a hydrogenation ratio of 70% or more, as measured with respect to the double bonds in said conjugated diene monomer units.