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. 26, 2023
Filed:
Aug. 10, 2018
Daikin Industries, Ltd., Osaka, JP;
Takahiro Taira, Osaka, JP;
Kazuhiro Mishima, Osaka, JP;
Chiaki Okui, Osaka, JP;
Tadao Hayashi, Osaka, JP;
Hirotoshi Yoshida, Osaka, JP;
Yuuji Tanaka, Osaka, JP;
Masayoshi Miyamoto, Osaka, JP;
Taku Yamanaka, Osaka, JP;
Taketo Kato, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A method for producing an aqueous dispersion of purified polytetrafluoroethylene, the method including: removing or reducing a compound represented by Formula (1) or (2) below from an aqueous dispersion of polytetrafluoroethylene obtained using a hydrocarbon surfactant:(H—(CF)—COO)M; or Formula (1):(H—(CF)—SO)M. Formula (2): Also disclosed is a composition containing polytetrafluoroethylene substantially free from a compound represented by Formula (3) below and a molded body including the composition:(H—(CF)—SO)M. Formula (3):