| 摘要 |
PROBLEM TO BE SOLVED: To provide: a new copolymer having a branch structure for improving moldability of a resin; and a copolymer composition.SOLUTION: There are provided: (1) a copolymer resin composition of a copolymer which is obtained by simultaneously adding a divinylbenzene derivative and a conjugated diene or a divinylbenzene derivative as a branching step and in which an anionic polymer of a vinyl aromatic hydrocarbon monomer has a weight average molecular weight as measured by a GPC method of 20000 to 2000000 using an initiator in which the molar ratio between a divinylbenzene derivative and an alkyl lithium is 3/97 to 80/20, wherein (2) the mass ratio between the copolymer described in (1) and a vinyl aromatic hydrocarbon-based resin is 0.1/99.9 to 20/80; and a method for producing the same. |
