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:
Apr. 26, 2016
Filed:
Apr. 26, 2012
Applicants:
Hiroshi Akikaze, Tokyo, JP;
Hidenobu Higashi, Tokyo, JP;
Hidenori Okuzaki, Kofu, JP;
Inventors:
Assignees:
Asahi Kasei Finechem Co., Ltd., Osaka, JP;
University of Yamanashi, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 28/02 (2006.01); H01B 1/12 (2006.01); C08L 41/00 (2006.01); C08L 65/00 (2006.01); H01G 9/042 (2006.01); C09D 141/00 (2006.01); H01G 9/00 (2006.01); H01G 9/028 (2006.01);
U.S. Cl.
CPC ...
C08F 28/02 (2013.01); C08L 41/00 (2013.01); C08L 65/00 (2013.01); C09D 141/00 (2013.01); H01B 1/127 (2013.01); H01G 9/0036 (2013.01); H01G 9/028 (2013.01); H01G 9/042 (2013.01); C08G 2261/1424 (2013.01); C08G 2261/3223 (2013.01); C08G 2261/794 (2013.01);
Abstract
The present invention relates to polyvinyl sulfonic acid comprising a vinyl sulfonic acid unit represented by a specific general formula (1), wherein the molar amount of sulfonic acid groups derived from vinyl sulfonic acid monomers with respect to the molar amount of total monomer units is 50.0 to 98.0 mol %, and the polyvinyl sulfonic acid has an absorbance of 0.1 or greater (aqueous solution: 0.2 mass %, cell length: 10 mm) in a wavelength range of 255 to 800 nm.