| 摘要 |
PROBLEM TO BE SOLVED: To provide a coated parts for automobiles which has an excellent paint adhesive strength and also a high-degree mechanical strength balance especially between the high rigidity and low-temperature impact performance by a simplified coating method of directly applying a paint. SOLUTION: An injection-molded body for the coated parts is obtained by injection-molding a propylene-based resin composition comprising 20-40 wt.% of (a) a propylene/ethylene block copolymer consisting of 80-95 wt.% of propylene solely polymerized portions and 5-20 wt.% of ethylene/propylene randomly copolymerized portions, 20-40 wt.% of (b) and ethylene/octene copolymer, 0-20 wt.% of (c) a talc which has a length of not more than 15μm, an average particle diameter of 1-10μm and an average aspect ratio of not less than 3, and 20-40 wt.% of (d) a modified propylene-based polymer, and the injection-molded body has a surface with an abundance of the oxygen atom/the carbon atom of not less than 0.008; the coated parts is obtained by applying directly on the injection-molded body a polyurethane paint composition which is so blended that a ratio of the hydroxyl-group equivalent weight and the isocyanate-group equivalent weight may become not more than 5.
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