Method for producing fluorine-containing polymer
AssigneeDaikin Industries, Ltd.
InventorsKatsuhiko Imoto, Shumi Nishii, Yoshinari Fukuhara
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Abstract
An object of the present invention is to provide a method for producing a fluoropolymer which produces a large number of particles with a small particle size using a specific non-fluorous compound having surfactant ability. The method for producing a fluoropolymer includes aqueous dispersion polymerization of a monomer including at least one fluoroolefin in the presence of a compound represented by the formula: CH2═CHCH2—O—(C═O)CHXCH2COO(CH2)nCH3 (in the formula, X is H or SO3Y wherein Y is NH4 or an alkaline metal; and n is an integer of 0 to 19.)
Claims3
A method for producing a fluoropolymer, comprising aqueous dispersion polymerization of a monomer or a monomeric mixture including at least one fluoroolefin in the presence of a compound (1) represented by the following formula (1):
- wherein X is H or SO3Y wherein Y is NH4 or an alkaline metal;
- and n is an integer of 0 to 19,
- wherein the at least one fluoroolefin comprises a monomeric mixture of vinylidene fluoride, tetrafluoroethylene and chlorotrifluoroethylene, or a monomeric mixture of vinylidene fluoride and hexafluoropropylene, and
- the amount of the compound (1) to be used is 50 to 1,000 ppm based on the total water amount.
Dependencies are inferred from the claim text.