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:
Mar. 19, 2013
Filed:
Jul. 24, 2008
Applicants:
Nobuhiko Tsuda, Settsu, JP;
Akinari Sugiyama, Settsu, JP;
Inventors:
Nobuhiko Tsuda, Settsu, JP;
Akinari Sugiyama, Settsu, JP;
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 59/135 (2006.01); C07C 309/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides a compound which is useful in production of a fluoropolymer and easy to be removed from the produced fluoropolymer, a method of producing the compound, and a method of producing a fluoropolymer using the compound. The invention provides a compound which is represented by Rf—CHO—CF—CHF—Rf—X, wherein Rfrepresents a fluoroalkyl group containing 1 to 5 carbon atoms, Rfrepresents a fluoroalkylene group containing 1 to 3 carbon atoms, X represents —COOM or —SOM, and M represents one of H, K, Na, and NH.