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:
Dec. 23, 2025
Filed:
May. 18, 2022
Daikin Industries, Ltd., Osaka, JP;
Yoshinori Nanba, Osaka, JP;
Taketo Kato, Osaka, JP;
Kenji Ichikawa, Osaka, JP;
Soushi Tsuchiya, Osaka, JP;
Souta Yuasa, Osaka, JP;
Yosuke Kishikawa, Osaka, JP;
Masahiro Higashi, Osaka, JP;
Masaki Irie, Osaka, JP;
Taku Yamanaka, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
The present disclosure provides a method for producing a fluoropolymer, the method includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the polymer (1) is a polymer of a monomer (1) represented by the general formula (1) below, in which the content of a dimer and a trimer of the monomer (1) is 1.0% by mass or less based on the polymer (1):CF═CF—R—CZZ-A (1)wherein R is a linking group; Zand Zare each independently F or CF; and Ais an anionic group.