| 摘要 |
A propylene resin composition having suitability to coating is disclosed which comprises (a) 100 parts by weight of a propylene-ethylene block copolymer comprising 60 to 95% by weight of a crystalline polypropylene unit and 5 to 40% by weight of an ethylene-propylene random copolymer unit, (b) 2 to 120 parts by weight of an ethylene-* small Greek alpha *-olefin copolymer obtained by polymerization using a metallocene catalyst, containing 20 to 65% by weight of an * small Greek alpha *-olefin having 3 to 8 carbon atoms, and having a melt flow rate of 0.5 to 40 g/10 min and a density of 0.85 to 0.90 g/cm 3 , (c) 0.1 to 120 parts by weight of a filler selected from talc, mica, and a fibrous filler, (d) 5 to 40% by weight of a propylene polymer having grafted thereto 0.1 to 25% by weight, based on the total polymer, of derivative (I), and (e) 0 to 10% by weight of a hydroxyl-terminated diene polymer or a hydrogenation product thereof. A molded article obtained from the propylene resin composition can be coated with a melamine coating without cleaning with trichloroethane or primer coating to provide a coated article having high adhesion to the coating, appearance, and well-balanced high mechanical strength. R = C 1 - C 4 alkylene. |
