Patent ID: 6706803
Filing Date: 2004-03-16
Classification: C08F

Abstract:
A process for the synthesis of chlorotrifluoroethylene (PCTFE) (co)polymers, containing at least 80% by moles of CTFE, the complement to 100 being one or more fluorinated monomers in aqueous emulsion, in the presence of a microemulsion consisting of water, (per)fluoropolyoxyalkylenes, and fluorinated surfactant, and an inorganic initiator, wherein the fluorinated surfactant has formula:Rfâ€”Xâˆ’M+wherein Rf is a C5-C14 (per)fluoroalkyl chain, or a (per)fluoropolyoxyalkylene chain, Xâˆ’ is â€”COOâˆ’ or â€”SO3âˆ’, M+ is Na+ or K+, and the initiator is a potassium and/or sodium persulphate, wherein temperature is in the range of 0Â° C.-150Â° C. and pressure is in the range of 3-80 bar.