Patent ID: 9657169
Date: 2017-05-23
CPC Classifications: C08F,C08L

Claim:
1. A graft copolymer obtainable by polymerization of a vinyl-based monomer mixture (m1) comprising an aromatic vinyl compound and a vinyl cyanide compound in the presence of a cross-linked ethylene.α-olefin copolymer (C) obtainable by cross-linking treatment of an ethylene.α-olefin copolymer (A) which has a mass average molecular weight (Mw) of 17×10 4 to 35×10 4 and a distribution of molecular weight (Mw/Mn) of 1 to 3, wherein the distribution of molecular weight is represented by the ratio of the mass average molecular weight (Mw) and the number-average molecular weight (Mn), wherein a gel content ratio of the cross-linked ethylene α-olefin copolymer (C) with respect to the total amount of the cross-linked ethylene α-olefin copolymer (C) is 35 to 75% by mass.