POLYPROPYLENE-BASED RESIN COMPOSITION FOR AUTOMOBILE PARTS, AND AUTOMOBILE EXTERIOR PARTS

摘要

PROBLEM TO BE SOLVED: To provide a polypropylene-based resin composition etc. for automobile parts, which exhibits excellent moldability, high rigidity, an excellent external appearance of the molding, and further excellent surface impact strength, and which is suitable particularly for an automobile bumper.SOLUTION: The polypropylene-based resin composition etc. for automobile parts comprises: 30-62 wt.% of a propylene-based copolymer having an MFR of 40-70 g/10 min; 5-20 wt.% of a propylene-based block copolymer which comprises both a high-MFR crystalline polypropylene segment and a specific ethylene-propylene copolymer segment and which has an MFR of 100-130 g/10 min; 10-20 wt.% of a combination of two ethylene-α-olefin copolymer elastomers with a specific ratio, each of which has a specific MFR and a specific density; and 23-30 wt.% of talc with a specific particle diameter.