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:
Jan. 26, 2010
Filed:
Mar. 15, 2006
Yoshitaka Yamakawa, Tokyo, JP;
Toshihiro Ohtsuki, Tokyo, JP;
Kohei Goto, Tokyo, JP;
Toshiaki Kadota, Tokyo, JP;
Teruhiko Umehara, Tokyo, JP;
Nagayuki Kanaoka, Wako, JP;
Masaru Iguchi, Wako, JP;
Hiroshi Sohma, Wako, JP;
Yoshitaka Yamakawa, Tokyo, JP;
Toshihiro Ohtsuki, Tokyo, JP;
Kohei Goto, Tokyo, JP;
Toshiaki Kadota, Tokyo, JP;
Teruhiko Umehara, Tokyo, JP;
Nagayuki Kanaoka, Wako, JP;
Masaru Iguchi, Wako, JP;
Hiroshi Sohma, Wako, JP;
JSR Corporation, Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a polymer electrolyte having a protonic acid group that is excellent in thermal stability and dimensional stability. The polymer electrolyte includes copolymers having a sulfonic acid group which has a structure represented by the following formula: wherein X is a divalent electron-withdrawing group; Y is an oxygen or a sulfur; Z and Q are each a direct bond, —O—, —S—, —CO—, —SO—, —[C(R')]— (g: integer of from 1 to 8), etc.; R, R′ and Rto Rare each a hydrogen, a fluorine, an alkyl, a fluorine-substituted alkyl, an aryl or a nitrile; m, n, p, q, r, s, t and u are each an integer of from 0 to 4 (with the proviso that p+q≧1); and A is a group represented by Formula (5) or (5) below: wherein W is a divalent electron-withdrawing group; S is a protonic acid group; i is an integer of from 1 to 5; and j is an integer of from 1 to 7.