Patent ID: 7795477

Claim:
A process for preparing perfluorovinylethers having general formula: R f O—CF═CF 2 (IA) wherein R f is a C 1 -C 3 alkyl perfluorinated substituent; comprising the following steps: 1a) fluorination with fluorine of tetrachloroethylene and obtainment of CCl 2 F—CCl 2 F; 2a) dehalogenation of CCl 2 F—CCl 2 F wherein the halogen is Cl, and obtainment of FCCl═CClF; 3a) reaction with a hypofluorite of formula R f OF, wherein R f as above, of FCCl═CClF, obtaining the fluorohalogenethers of formula: R f O—CFCl—CF 2 Cl (I); and 4a) dehalogenation of the compound of formula (I) and obtainment of the per-fluorovinylethers of formula (IA).