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. 09, 2024
Filed:
Oct. 03, 2019
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Taketo Kato, Osaka, JP;
Yohei Fujimoto, Osaka, JP;
Kenji Ichikawa, Osaka, JP;
Hiroyuki Sato, Osaka, JP;
Yoshinori Nanba, Osaka, JP;
Hirotoshi Yoshida, Osaka, JP;
Kengo Ito, Osaka, JP;
Chiaki Okui, Osaka, JP;
Masamichi Sukegawa, Osaka, JP;
Taku Yamanaka, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 114/26 (2006.01); C08L 27/18 (2006.01);
U.S. Cl.
CPC ...
C08F 114/26 (2013.01); C08L 27/18 (2013.01);
Abstract
A method for producing polytetrafluoroethylene, which includes polymerizing tetrafluoroethylene in an aqueous medium in the presence of a nucleating agent and a hydrocarbon anionic surfactant to obtain polytetrafluoroethylene. A total amount of the nucleating agent and the hydrocarbon anionic surfactant at the initiation of polymerization is more than 50 ppm based on the aqueous medium.