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:
Apr. 21, 1992
Filed:
Jan. 04, 1991
Kunio Iwanami, Ooi, JP;
Kissho Kitano, Ooi, JP;
Kiyotada Narukawa, Tokorozawa, JP;
Kenichi Aoki, Yokohama, JP;
Yukihiko Yagi, Ooi, JP;
Masato Sakuma, Urawa, JP;
Takashi Mikami, Komae, JP;
Masami Esaki, Toyota, JP;
Fumio Kato, Kariya, JP;
Koji Egashira, Oobu, JP;
Hiroyuki Wakabayashi, Kariya, JP;
Tonen Sekiyukagaku Kabushiki Kaisha, Tokyo, JP;
Nippondenso Co., Ltd., Aichi, JP;
Abstract
Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 .mu.m are uniformly dispersed in polyamide matrix phases. They are produced by a double-screw extruder having a length/inner diameter (L/D) ratio of 25 or more and having a first hopper for introducing the resin components, a second hopper for introducing the glass fibers, a vent and a die exit in this order, and further having at least one first kneading zone for strongly kneading the resin components, and at least one second kneading zone disposed between the second hopper and the vent for strongly kneading the resin components and the glass fibers.