| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene-based resin composition having good moldability and processability in injection molding and excellent in physical properties such as flexural modulus, low temperature impact resistance and linear expansion characteristics and suitable for automobile exterior parts including bumper, locker molding, side molding and over fender. SOLUTION: This polypropylene-based composition is characterized in that the composition is composed of (A) 70-99.9 wt.% propylene-ethylene block copolymer having 16-400 g/10 min melt flow rate and consisting of 50-74 wt.% crystalline propylene polymer part having 70-500 g/10 min melt flow rate and 26-50 wt.% propylene-ethylene random polymer part having 20-80 wt.% ethylene content and (B) 0.1-30 wt.% inorganic filler.
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