| 摘要 |
PROBLEM TO BE SOLVED: To provide an automotive propylene-based resin having coating performance given by assuming that the composition is subjected to primerless coating of a water-based coating, and further having an excellent balance between the coating performance and mechanical characteristics, to provide a method for producing the same, and to provide a molded product of the same. SOLUTION: The automotive propylene-based resin composition contains (A) a polypropylene-based resin composition in an amount of 100 pts.wt. and (B) a modified polypropylene in an amount of 1-15 pts.wt., wherein the polypropylene-based resin composition (A) is composed of (a) a specified propylene-ethylene block copolymer in an amount of 100 pts.wt., (b) an ethylene-octene random copolymer and/or an ethylene-butene random copolymer in an amount of 20-40 pts.wt., and (c) talc in an amount of 30-50 pts.wt. Further, the modified polypropylene (B) has a weight-average molecular weight of 8,000-15,000 and a graft ratio of a polar functional group of 3.0-16 wt%, so that the automotive propylene-based resin composition has the excellent balance between the coating performance and impact strength. The method for producing the composition and the molded product of the composition are provided, respactively. COPYRIGHT: (C)2004,JPO
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