| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene-based resin composition suitable for vehicular materials which can provide an injection molded article excellent in rigidity and impact resistance, and exhibiting few weld lines and flow marks to make the appearance excellent. SOLUTION: The polypropylene-based resin composition comprises: 11 to 50 wt.% of a crystalline propylene block copolymer (A) having 5 to 15 wt.% of a soluble part of n-decane (D<SB>sol</SB>), Mw/Mn of≥3.5, an [η]<SB>A</SB>of 5.0 to 11.0 dl/g, an ethylene content of 20 to 60 mol%, and Mw/Mn of an insoluble part of n-decane (D<SB>insol</SB>) of≥3.5; 25 to 65 wt.% of a crystalline propylene block copolymer (B) having 15 to 65 wt.% of a soluble part of n-decane (D<SB>sol</SB>), Mw/Mn of <3.5, an [η]<SB>B</SB>of 1.0 to 4.0 dl/g, an ethylene content of 20 to 60 mol%, and Mw/Mn D<SB>insol</SB>of <3.5; 0 to 20 wt.% of an elastomer (C); and 10 to 30 wt.% of an inorganic filler (D), wherein Mw/Mn of D<SB>insol</SB>is 2.5 to 3.1. COPYRIGHT: (C)2011,JPO&INPIT
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