Resin modifier, resin composition containing the same, and polyaromatic vinyl resin composition

摘要

A conjugated diene polymer rubber composition for modifying a resin comprising a conjugated diene homopolymer or copolymer in which the content of cis-bond units in the total conjugated diene monomer units is at least 40%; the weight average molecular weight (Mw) is 20,000 to 10,000,000; and the Mw and the number average molecular weight (Mn) satisfy the formula: log(Mw/Mn)<0.162xlog(Mw)-0.682,(i) A resin composition comprising a resin and the conjugated diene polymer rubber composition, and (ii) a polyaromatic vinyl resin composition prepared by polymerizing an aromatic vinyl monomer in the presence of the conjugated diene polymer rubber composition have balanced and good low-temperature resistance and surface luster.