Process for preparing vinylidene fluoride by the direct fluorina

Details Process for preparing vinylidene fluoride by the direct fluorina Process for preparing vinylidene fluoride by the direct fluorina

1988-03-07

1989-05-02

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 1720, C07C 2118

Patent

active

048270555

ABSTRACT:
Vinylidene fluoride is produced by the gaseous phase reaction of vinylidene chloride with hydrofluoric acid at a temperature of from about 400.degree. to 700.degree. C. in the presence of oxygen and a catalyst containing AlF.sub.3 either alone or in combination with a transition metal fluoride selected from iron, cobalt, chromium, nickel, zinc and combinations thereof.

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patent: 3723549 (1973-03-01), Kaess et al.
patent: 3862995 (1975-01-01), Martens et al.
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