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:
Feb. 23, 1999
Filed:
Aug. 20, 1997
Eiichi Kamei, Hirakata, JP;
Yukihiko Asano, Hirakata, JP;
Kiyoshi Tsuruzawa, Hirakata, JP;
Yutaka Matsudomi, Hirakata, JP;
UBE Industries, Ltd., Yamaguchi, JP;
Abstract
In a resin composite, polyolefine grains are dispersed in a polyamide matrix. Each of the polyolefine grains has a core made of an unmodified polyolefine and a shell made of another polyolefine that is modified. In one embodiment, the core is made of a crystalline polypropylene resin (C), and the shell is made of modified copolymer (B) having ethylene units and .alpha.-olefine units. The modified copolymer (B) may have the .alpha.-olefine units as a major component. The resin composite has 30 to 80 percents by weight of polyamide (A), 1 to 30 percents by weight of the modified copolymer (B), and 19 to 69 percents by weight of the crystalline polypropylene resin (C) wherein the sum of the polyamide, the modified copolymer, and the crystalline propylene resin is 100 percents by weight. In another embodiment, the core is made of an unmodified copolymer (E) having ethylene units and .alpha.-olefine units, and the shell is made of a modified crystalline polypropylene resin (D). The copolymer may have the ethylene units as a major component. The resin composite has 30 to 80 percents by weight of the polyamide (A), 5 to 50 percents by weight of the modified crystalline polypropylene resin (D), and 5 to 65 percents by weight of the copolymer (E) wherein the sum of the polyamide, the modified crystalline polypropylene resin, and the copolymer is 100 percents by weight. The unmodified crystalline polypropylene resin (C) is modified with at least one of .alpha.,.beta.-unsaturated caboxylic acid and .alpha.,.beta.-unsaturated caboxylate to give the modified crystalline polypropylene resin (D). The resin composite has both the properties possessed by polyamide and the properties possessed by polyolefine in good balance, and further has properties that are not sufficiently possessed by the polyamide or polyolefine, specifically, low warpage upon molding, good dimensional stability and good impact resistance.