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:
Jun. 28, 2005
Filed:
Mar. 23, 2004
Jun Satoh, Chiba, JP;
Hiroyuki Tanimura, Sodegaura, JP;
Katsuyuki Imigi, Ichihara, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A polypropylene resin composition having a melt flow rate of 70 to 120 g/10 min (at 230° C., 2.16 kgf-load), a flexural modulus of 1300 to 4000 MPa and an IZOD impact strength of 30 to 100 kJ/m, wherein the composition is obtained by adding a small amount of an organic peroxide to a mixture comprising 60 to 80% by weight of a specific propylene-ethylene block copolymer made up of a propylene homopolymer portion and a propylene-ethylene random copolymer portion, a rubber which is a copolymer of ethylene and at least one α-olefin having a melt flow rate of 2 to 10 g/10 min (at 190° C., 2.16 kgf-load), and inorganic filler (C), and kneading the combined ingredients at a temperature of 170 to 280° C.