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:
Jan. 23, 2018
Filed:
Jul. 28, 2015
Unimatec Co., Ltd., Tokyo, JP;
Yuichiro Oda, Ibaraki, JP;
Ryota Negishi, Ibaraki, JP;
Unimatec Co., Ltd., Tokyo, JP;
Abstract
A mixture of polyfluoroalkene carboxylic acids or salts thereof represented by the general formulas:CFCH═CF(CFCF)CFCOOMandCFCF═CHCF(CFCF)CFCOOMwherein M is a hydrogen atom, an ammonium salt, an organic amine salt or an alkali metal, n is an integer of 1 to 6 and m is an integer of 0 to 2. The mixture of polyfluoroalkene carboxylic acids or salts thereof is produced by subjecting a polyfluoroalkane carboxylic acids represented by the general formula:CF(CHCF)(CFCF)CFCOOHto a dehydrofluorination reaction in the presence of a nitrogen-containing heterocyclic compound catalyst, and has a lower critical micelle concentration and less surface tension at that time, therefore, the mixture of polyfluoroalkene carboxylic acids or salts thereof can be effectively used as a surfactant in the polymerization of fluorine-containing monomers.