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:
Sep. 26, 2023
Filed:
Mar. 01, 2019
Daikin Industries, Ltd., Osaka, JP;
Yoshinori Nanba, Osaka, JP;
Kenji Ichikawa, Osaka, JP;
Yohei Fujimoto, Osaka, JP;
Hirotoshi Yoshida, Osaka, JP;
Hiroyuki Sato, Osaka, JP;
Taketo Kato, Osaka, JP;
Kengo Ito, Osaka, JP;
Sumi Ishihara, Osaka, JP;
Masahiro Higashi, Osaka, JP;
Satoru Yoneda, Osaka, JP;
Hirokazu Aoyama, Osaka, JP;
Masamichi Sukegawa, Osaka, JP;
Yosuke Kishikawa, Osaka, JP;
Takahiro Taira, Osaka, JP;
Chiaki Okui, Osaka, JP;
Taku Yamanaka, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1), the polymer (1) including a polymerized unit derived from a monomer CX═CY(—CZ—O—Rf-A), wherein X is the same or different and is —H or —F; Y is —H, —F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is —H, —F, an alkyl group, or a fluoroalkyl group; Rf is a C1-C40 fluorine-containing alkylene group or a C—C100 fluorine-containing alkylene group and having an ether bond; and A is —COOM, —SOM, or —OSOM, wherein M is —H, a metal atom, —NR, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein Ris H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.