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. 05, 2017
Filed:
Apr. 30, 2014
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Takashi Sekiguchi, Settsu, JP;
Manabu Fujisawa, Settsu, JP;
Ryouichi Fukagawa, Settsu, JP;
Takeshi Shimono, Settsu, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
The present invention aims to provide a method of producing a fluoropolymer, especially a fluoropolymer essentially including a tetrafluoroethylene or chlorotrifluoroethylene unit, at a higher polymerization rate with improved efficiency, the method being capable of improving the moldability in extrusion molding and suppressing discoloration. The method of producing a fluoropolymer of the present invention includes producing a fluoropolymer by polymerizing tetrafluoroethylene or chlorotrifluoroethylene in the presence of a peroxydicarbonate. The peroxydicarbonate is represented by the formula:R—O—C(═O)—O—O—C(═O)—O—Rwherein R's may be the same as or different from each other and individually represent a C4 alkyl group or alkoxy alkyl group.