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:
Jul. 17, 2018
Filed:
Mar. 30, 2015
Asahi Glass Company, Limited, Tokyo, JP;
Takeshi Hirai, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide a simple method whereby an ionic polymer membrane having a high ion exchange capacity and a low water uptake can be produced by converting a —SOF group in a polymer to a pendant group having multiple ion exchange groups, while preventing a cross-linking reaction. At the time of obtaining an ionic polymer membrane by converting —SOF (group (1)) in a polymer sequentially to —SONZZ(group (2)), —SON(M)SO(CF)SOF (group (3)), —SON(H)SO(CF)SOF (group (4)) and —SON(M)SO(CF)SOM(group (5)), the polymer is formed into a polymer membrane in the state of any one of the groups (1) to (4), and the polymer membrane is thermally treated in the state of group (4). Here, Zand Zare hydrogen atoms, etc., Mis a monovalent cation, and Mis a hydrogen ion or a monovalent cation.