Fluoropolymer polymerization using non-fluorinated surfactants
2006
A process for preparing a fluoropolymer in the aqueous reaction medium comprising: a) forming an aqueous emulsion comprising at least one radical initiator, at least one nonfluorinated surfactants, and at least one fluoromonomer selected from the group consisting of: vinylidene fluoride, tetrafluoroethylene, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropene, vinyl fluoride, hexafluoroisobutylene, perfluorobutyl, pentafluoropropene, 3,3,3-trifluoro-1-propene, 2-trifluoromethyl- 3,3,3-trifluoropropene, a vinyl ether fluorinated , a fluorinated allyl ether, an allyl ether nonfluorinated, a fluorinated dioxole, and combinations thereof, and b) initiating polymerization of said fluoromonomer, wherein said nonfluorinated surfactants is a polyacid selected from the group consisting of poly (vinyl phosphonic acid ), poly (acrylic acid), poly (vinyl sulfonic acid) and salts thereof.
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