| 摘要 |
PROBLEM TO BE SOLVED: To obtain a propylene based resin composition excellent in mar resistance and low-temperature impact resistance. SOLUTION: This propylene based resin composition comprises (A) 95-25 wt.% propylene-ethylene block copolymer resin in which the melt flow rate(MFR) of a propylene homopolymer moiety is 100-1,000 g/10 min with its isotactic pentad ratio of not less than 0.95, where the content ratio (molar ratio) of ethylene to propylene in an ethylene-propylene copolymer is 20/80-80/20 with its weight average molecular weight(Mw) of not smaller than 700,000 and the ratio (wt.%) of the propylene homopolymer moiety to the ethylene- propylene copolymer moiety is 99-70/1-30, (B) 0-50 wt.% elastomer having an MFR of 0.1-100 g/10 min, and (C) 5-75 wt.% inorganic filler. |
