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. 25, 2023
Filed:
Feb. 07, 2019
Daikin Industries, Ltd., Osaka, JP;
Taketo Kato, Osaka, JP;
Satoru Yoneda, Osaka, JP;
Masahiro Higashi, Osaka, JP;
Akiyoshi Yamauchi, Osaka, JP;
Sumi Ishihara, Osaka, JP;
Yosuke Kishikawa, Osaka, JP;
Moe Hosokawa, Osaka, JP;
Marina Nakano, Osaka, JP;
Hirotoshi Yoshida, Osaka, JP;
Yoshinori Nanba, Osaka, JP;
Kengo Ito, Osaka, JP;
Chiaki Okui, Osaka, JP;
Kenji Ichikawa, Osaka, JP;
Yohei Fujimoto, Osaka, JP;
Hirokazu Aoyama, Osaka, JP;
Masamichi Sukegawa, Osaka, JP;
Taku Yamanaka, Osaka, JP;
Hiroyuki Sato, 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 surfactant to provide a fluoropolymer, the surfactant being represented by the general formula (1): CRRR—CRR—X-A, wherein Rto Rare each H or a monovalent substituent, with the proviso that at least one of Rand Rrepresents a group represented by the general formula: —Y—Rand at least one of Rand Rrepresents a group represented by the general formula: —X-A or a group represented by the general formula: —Y—R; and A is the same or different at each occurrence and is —COOM, —SOM, or —OSOM. Also disclosed is a surfactant for polymerization represented by the general formula (1), a method for producing a fluoropolymer using the surfactant and a composition including a fluoropolymer and the surfactant.