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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.:

US 11851519 B1

PDFFull Text
Date of Patent:
Dec. 26, 2023

Filed:

Aug. 10, 2018

Method for producing purified polytetrafluoroethylene aqueous dispersion liquid, method for producing modified polytetrafluoroethylene powder, method for producing polytetrafluoroethylene molded body, and composition

Applicant:

Daikin Industries, Ltd., Osaka, JP;

Inventors:

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;

Assignee:

DAIKIN INDUSTRIES, LTD., Osaka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Tae H Yoon

Int. Cl.
CPC ...
C08F 6/06 (2006.01); C08F 6/16 (2006.01); C08F 6/24 (2006.01);
U.S. Cl.
CPC ...
C08F 6/06 (2013.01); C08F 6/16 (2013.01); C08F 6/24 (2013.01);
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):

Find Patent Forward Citations

Taira, Takahiro. (2023). Method for producing purified polytetrafluoroethylene aqueous dispersion liquid, method for producing modified polytetrafluoroethylene powder, method for producing polytetrafluoroethylene molded body, and composition (U.S. Patent No. 11851519). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11851519

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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