Mixture of polyfluoroalkene carboxylic acids or salts thereof and process for producing the same

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United States of America Patent

PATENT NO 9873654
SERIAL NO

15329192

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Abstract

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A mixture of polyfluoroalkene carboxylic acids or salts thereof represented by the general formulas:

description='In-line Formulae' end='lead'CnF2n+1CH═CF(CF2CF2)mCF2COOMdescription='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'anddescription='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'Cn−1F2n−1CF═CHCF2(CF2CF2)mCF2COOMdescription='In-line Formulae' end='tail'

wherein 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:

description='In-line Formulae' end='lead'CnF2n+1(CH2CF2)(CF2CF2)mCF2COOHdescription='In-line Formulae' end='tail'

to 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.

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Patent Owner(s)

Patent OwnerAddress
UNIMATEC CO LTD12-15 SHIBADAIMON 1-CHOME MINATO-KU TOKYO 1050012

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Negishi, Ryota Ibaraki, JP 3 13
Oda, Yuichiro Ibaraki, JP 14 27

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