Process for preparing vinylidene fluoride by the direct fluorination of vinylidene chloride.

摘要

Vinylidene fluoride is produced by the gaseous phase reaction of vinylidene chloride with hydrofluoric acid at a temperature of from about 400 DEG to 700 DEG C in the presence of oxygen and a catalyst containing AlF3 either alone or in combination with a transition metal fluoride selected from iron, cobalt, chromium, nickel, zinc and combinations thereof.