The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Feb. 06, 1997
Japan Polychem Corporation, Tokyo, JP;
Abstract
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-.alpha.-olefin copolymer obtained by polymerization using a metallocene catalyst, containing 20 to 65% by weight of an .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.sup.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 maleic anhydride or a hydroxyl-containing maleic anhydride derivative, 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.