C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
204/55
C25B 3/02 (2006.01) C07D 303/08 (2006.01) C07D 303/48 (2006.01)
Patent
CA 1089404
Abstract of the Disclosure Hexafluoropropene epoxide Image is prepared by anodic oxidation of hexafluoropropene in an elec- trolytical cell which contains at least in the anode space as electrolyte a solution of the following composition: glacial acetic acid and/or acetonitrile with from 2 - 40% by volume of water and about 1 - 10 weight % - calculated on the total solu- tion - of at least one alkali perchlorate, -hexafluorosilicate, -tetrafluoroborate, -hexafluorophosphate or -nitrate and/or of at least one of the free acids on which these salts are based as compounds improving the conductance. The anode consists of a metal of the platinum group of the Periodic table or of an alloy of these metals or of PbO2, the cathode consisting of one of the usual metals or of graphite. If cathode space and anode space are separated, catholyte and anolyte are either of the same kind or the catholyte is one of the usual electrolytes. The cell tem- perature should range from about -30 to +50°C. Hexafluoropropene epoxide is employed for preparing polymers which are especially important as inert liquids, lubricant liquids and hydraulic liquids.
242361
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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