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. 18, 2007
Filed:
Jul. 31, 2003
Akio Taniguchi, Osaka, JP;
Tadashi Kokubo, Osaka, JP;
Kentaro Takesada, Osaka, JP;
Kozo Kondo, Hyogo, JP;
Takeshi Chiba, Hyogo, JP;
Atsushi Kumasaki, Osaka, JP;
Yutaka Kaneda, Osaka, JP;
Akio Taniguchi, Osaka, JP;
Tadashi Kokubo, Osaka, JP;
Kentaro Takesada, Osaka, JP;
Kozo Kondo, Hyogo, JP;
Takeshi Chiba, Hyogo, JP;
Atsushi Kumasaki, Osaka, JP;
Yutaka Kaneda, Osaka, JP;
Kaneka Corporation, Osaka, JP;
Abstract
The present invention provides a novel acrylic block copolymer rich in flexibility and excellent in mechanical strength, moldability, oil resistance, heat resistance, thermal decomposition resistance, weather resistance, and compression set, and further rich in reactivity. The present invention also provides compositions, seal products, and automobile, electric, and electronic parts, all of which include the acrylic block copolymer. The acrylic block copolymer includes a methacrylic polymer block (a) and an acrylic polymer block (b), at least one of the polymer blocks containing, in its main chain, at least one acid anhydride group (c) represented by formula (1): (wherein Rs each represent hydrogen or a methyl group and may be the same or different, n represents an integer of 0 to 3, and m represents an integer of 0 or 1).