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:
Dec. 05, 2000
Filed:
Dec. 24, 1998
Kunio Iwanami, Mie, JP;
Akira Kobayashi, Mie, JP;
Mitsuhiro Murayama, Mie, JP;
Yuji Fujita, Mie, JP;
Takayuki Nagai, Toyota, JP;
Takao Nomura, Toyota, JP;
Masatoshi Matsuda, Toyota, JP;
Osamu Kito, Nisshin, JP;
Hisayuki Iwai, Aichi, JP;
Japan Polychem Corporation, Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.