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:
Aug. 26, 2025
Filed:
May. 26, 2021
Applicant:
Agc Inc., Tokyo, JP;
Inventors:
Takeshi Hirai, Tokyo, JP;
Susumu Saito, Tokyo, JP;
Assignee:
AGC Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 216/14 (2006.01); C08J 5/22 (2006.01);
U.S. Cl.
CPC ...
C08F 216/1475 (2020.02); C08J 5/225 (2013.01);
Abstract
To provide a method for producing a polymer, whereby it is possible to obtain a sulfonic acid group-containing polymer having a high TQ value and a high ion exchange capacity. A method for producing a fluorosulfonyl group-containing fluorinated polymer, which comprises polymerizing a monomer represented by the following formula m1 and tetrafluoroethylene, at a temperature of at least 110° C. and at most 250° C.: in the above formula, Rand Rare each a Cperfluoroalkylene group.