Patent ID: 7847010
Filing Date: 2010-12-07
Classification: C08F,C08L

Abstract:
1. A polypropylene resin composition comprising 100 parts by weight of a polypropylene resin material to be modified and 1 to 25 parts by weight of a molding appearance modifier (A), which molding appearance modifier comprises as an effective component a propylene block copolymer which has a crystalline propylene polymer portion and a propylene-ethylene random copolymer portion, and satisfies the following requirements (a) to (d): (a) the crystalline propylene polymer portion has an intrinsic viscosity [η] (b) the propylene-ethylene random copolymer portion has an ethylene content of from 30 to 70 wt. %, has an intrinsic viscosity [η] (c) the propylene block copolymer has, in its entirety, a melt flow rate ranging from 0.1 to 10 g/10 min, and (d) a ratio ([η]