Patent ID: 6331591
Filing Date: 2001-12-18
Classification: C08L

Abstract:
A transparent cycloolefin copolymer resin composition comprising:(A) a cycloolefin copolymer and (B) 1 to 100 parts by weight, per 100 parts by weight of said cycloolefin copolymer, of at least one rubber-like polymer selected from the group consisting of (B1) an aromatic vinyl-isobutylene copolymer and (B2) an aromatic vinyl-conjugated diene copolymer. wherein the difference in refractive index (nD) at 20.degree. C. between the components (A) and (B) is at most 0.015 and the particle size of the component (B) dispersed in the component (A) is from 0.4 to 3 .mu.m; and1 to 80 parts by weight of a core-shell polymer (C) per 100 parts by weight of the component (A), wherein the difference in refractive index (nD) at 20.degree. C. between the components (A) and (C) is at most 0.015 and the primary particle size of the component (C) is from 0.1 to 1.0 .mu.m.