Propylene resin compositions

摘要

A propylene resin composition having excellent physical property balance (heat resistance and impact strength at low temperature), and excellent injection molding processability as well as excellent paintability is provided, which propylene resin composition comprises component (a): a propylene-ethylene block copolymer comprising 85 - 95% by weight of a crystalline polypropylene homopolymer portion (unit A) and 5 - 15% by weight of an ethylene-propylene random copolymer portion (unit B) having an ethylene content of 30 - 60% by weight, the melt flow rate of the total component (a) being 50 - 500 g/10 min in an amount of 100 parts by weight, component (b): talc having an average particle diameter of 1.5 - 10 mu m and an average aspect ratio of 4 or more in an amount of 10 - 60 parts by weight, and component (c): an ethylene-1-octene copolymer comprising 20 - 50% by weight of 1-octene, and having a density of 0.86 - 0.89 g/cm<3> and a tensile strength at break of 10 MPa or more in an amount of 10 - 60 parts by weight.