POLYMERIZATION PROCESS

摘要

The invention pertains to a process for manufacturing a dispersion of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process comprising polymerizing VDF in an aqueous phase comprising at least one bisfluorocarbonphosphinic surfactant of formula RF 1 RF 2P(0)O-Xa + wherein RF 1 and RF 2, equal to or different from each other, is independently a fluorinated or perfluorinated C1-C20 group, and Xa is H, a alkali metal or a NRH 4 group, with RH being H or a C1-C6 hydrocarbon group [surfactant (P)], and to a vinylidene fluoride thermoplastic polymer dispersion therefrom.