POLYPROPYLENE RESIN COMPOSITION FOR AUTOMOBILE INTERIOR

PROBLEM TO BE SOLVED: To provide a polypropylene resin composition for automobile interiors which gives, as an automobile interior part, a molded article exhibiting excellent mechanical properties such as rigidity and impact strength, excellent external appearances without prominent flow marks, welded seams and the like and also excellent resistance to light discoloration and to glass fogging. SOLUTION: The polypropylene resin composition for automobile interiors comprises, each in a specific ratio, (A) a crystalline propylene block copolymer having a 23°C n-decane-soluble content of 17-25 wt% and an MFR (230°C) of 20-40 g/10 min, (B) a propylene homopolymer having an Mw/Mn ratio of at least 10 and an Mz/Mw ratio of at least 3.5 as measured by the GPC method, (C) an ethylene-1-butene random copolymer having an MFR (230°C) of 1-20 g/10 min and an ethylene content of 50-95 wt%, (D) talc having an average particle size of 1.5-3.5 μm and (E) a light-resistant stabilizer having an Mw of at least 700 and bearing an N-H group and an N-CH3group in the molecule. COPYRIGHT: (C)2005,JPO&NCIPI