E.i. Dupont De Nemours and Company

Baishen Liang

Ming-Hong Hung

Paul Raphael Resnick

A process for the production of perfluoromethyl perfluorovinyl ether (PMVE) and perfluoroethyl perfluorovinyl ether (PEVE) from hexafluoropropylene epoxide (HFPO) and a mixture comprising carbonyl fluoride (CF) and perfluoroacetyl fluoride (PAF) is disclosed. The process includes a step (a) involving the reaction of hexafluoropropylene epoxide (HFPO) with a mixture of carbonyl fluoride (CF) and perfluoroacetyl fluoride (PAF) to produce a mixture of 2,3,3,3-tetrafluoro-2-(trifluoromethoxy)propionic acid fluoride (PMPF) and 2,3,3,3-tetrafluoro-2-(pentafluoroethoxy)propionic acid fluoride (PEPF). In a second step, a mixture of PMPF and PEPF made in the step (a) is dehalocarbonylated to produce a mixture of PMVE and PEVE.

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Newark, DE, United States of America

Baishen Liang