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:
Oct. 30, 2007
Filed:
Nov. 12, 2001
Yoshimitsu Sakaguchi, Ohtsu, JP;
Kota Kitamura, Ohtsu, JP;
Hiroaki Taguchi, Osaka, JP;
Junko Nakao, Wakayama, JP;
Shiro Hamamoto, Ohtsu, JP;
Hiroshi Tachimori, Ohtsu, JP;
Satoshi Takase, Ohtsu, JP;
Yoshimitsu Sakaguchi, Ohtsu, JP;
Kota Kitamura, Ohtsu, JP;
Hiroaki Taguchi, Osaka, JP;
Junko Nakao, Wakayama, JP;
Shiro Hamamoto, Ohtsu, JP;
Hiroshi Tachimori, Ohtsu, JP;
Satoshi Takase, Ohtsu, JP;
Toyo Boseki Kabushiki Kaisha, Osaka-Shi, Osaka, JP;
Abstract
An object of the present invention is to obtain a novel polymeric material capable of forming a solid polymer electrolyte excellent not only in processability, solvent resistance and durability/stability but also in ion conductivity by introducing sulfonic acid group or phosphonic acid group into a polybenzazole compound having excellent properties in view of heat resistance, solvent resistance, mechanical characteristics and the like. Means attaining the object of the present invention is a polybenzazole compound including an aromatic dicarboxylic acid bond unit having sulfonic acid group and/or phosphonic acid group and satisfying either a condition that inherent viscosity measured in concentrated sulfuric acid is in the range of 0.25 to 10 dl/g or a condition that inherent viscosity measured in a methanesulfonic acid solution is in the range of 0.1 to 50 dl/g. The object of the present invention can be attained also by a resin composition containing the aforementioned polybenzazole compound, a resin molding, a solid polymer electrolyte membrane, a solid polymer electrolyte membrane/electrode assembly and a method of preparing the solid polymer electrolyte membrane/electrode assembly.