Patent ID: 6689841
Filing Date: 2004-02-10
Classification: C08L

Abstract:
A polypropylene resin composition comprising the following components (A), (B), (C), (D), and (E):(A) 30 to 70 wt. % of a propylene polymer comprising 0 to 30 wt. % of a propylene homopolymer and 70 to 100 wt. % of a propylene-ethylene copolymer; (B) 10 to 30 wt. % of an ethylene &agr;-olefin copolymer rubber comprising 60 to 95 wt. % of an ethylene-propylene copolymer rubber and 5 to 40 wt. % of an ethylene &agr;-olefin copolymer; (C) 1 to 10 wt. % of a styrene-based copolymer rubber comprising 10 to 50 wt. % of a polymer block of styrene or its derivative, 50 to 90 wt. % of a polymer block of at least one selected from the group consisting of ethylene, isoprene, butylene, butadiene, and propylene; (D) 1 to 7wt. % of a polar-group containing resin comprising a modified polypropylene grafted to a graft ratio of 0.5 to 6.0 wt. % a polyolefin polyol, or a mixture thereof; and (E) 10 to 40 wt. % of an inorganic filler selected from the group consisting from talc, barium sulfate, potassium carbonate, and wollastonite.