| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene resin composition which excels in flexibility, heat resistance, and low-temperature characteristics, is free of an odor, and has good moldability. SOLUTION: The polypropylene resin composition comprises 1-30 pts.wt. propylene homopolymer or amorphous polypropylene composed of a bicopolymer of propylene with a content of a 2-10Cα-olefin of 1-20 wt.%; 10-20 pts.wt. propylene homopolymer or crystalline polypropylene composed of a bicopolymer of propylene with a content of a 2-10Cα-olefin of 1-25 wt.%, 30-70 pts.wt. ethylene-α-olefin copolymer rubber composed of a bicopolymer of ethylene with a content of a 2-10Cα-olefin of 25-60 wt.%; 1-30 pts.wt. process oil selected from a paraffinic oil having a kinetic viscosity of 10-800 cSt (40°C), an aromatic oil, and a naphthenic oil; and 1-20 pts.wt. inorganic filler selected from talc, calcium carbonate, calcium sulfate, magnesium oxide, calcium stearate, mica, silica, calcium silicate, clay, and carbon black. COPYRIGHT: (C)2003,JPO
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