Process for the production of hexafluoropropylene oxide
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsMasanori Ikeda, Morikazu Miura, Atsushi Aoshima
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Abstract
A process for producing hexafluoropropylene oxide from hexafluoropropylene is described. The process comprises epoxidizing hexafluoropropylene in a two-phase system of an aqueous phase and an organic phase by the use of a hypochlorite as an oxidizing agent, the hypochlorite being dissolved or dispersed in the aqueous phase, in the presence of at least one catalyst selected from the group consisting of (a) quaternary ammonium salts, (b) quaternary phosphonium salts, (c) quaternary arsonium salts, and (d) lipophilic complexing agents for cations contained in the hypochlorite, and also, in the presence or absence of an inorganic base.
Claims14
A process for producing hexafluoropropylene oxide from hexafluoropropylene using hypochlorite as an oxidizing agent, which comprises epoxidizing hexafluoropropylene in a two-phase system of an aqueous phase and an organic phase which is immiscible in the aqueous phase, said hypochlorite being dissolved or dispersed in the aqueous phase in the presence of an inorganic base at a temperature of between -25.degree. C. and 60.degree. C., in the presence of a lipophilic quaternary ammonium salt, catalyst the total number of carbon atoms in quaternary ammonium ion being not less than 10 per quaternary ammonium ion, to produce HFPO.
A process as claimed in claim 18, wherein the available chlorine content in the aqueous phase is from 3% to 20%.
Dependencies are inferred from the claim text.