| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polypropylene resin composition which is excellent in stiffness, resistance to heat distortion, shock resistance and moldability and can form moldings of nice appearance. SOLUTION: This polypropylene resin composition comprises (A) a crystalline ethylene-propylene block copolymer with an ethylene content of 15-26wt.%, (B) a crystalline ethylene-propylene block copolymer with an ethylene content of 27-50wt.%, (C) an ethylene-α-olefin copolymer of <=70mol%α-olefin content polymerized with a single site catalyst and (D) tale with an average particle size of 3-7μm. The total content of components (A) and (B) is 50-80wt.%, the component (C) is 5-20wt.% and the component (D) is 15-30wt.% in this resin composition.
|
