Process for the preparation of hexafluoroacetone and direct use of the solution obtained by the process
AssigneeHoechst Aktiengesellschaft
InventorsPeter-Paul Rammelt, Gunter Siegemund
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Abstract
Hexafluoroacetone is prepared by a rearrangement of hexafluoropropene epoxide at an elevated temperature in the presence of hydrogen fluoride as a catalyst and, if appropriate, also as a solvent. In many cases the solution of hexafluoroacetone in hydrogen fluoride obtained in this process can be directly employed without further working-up or purification in further reactions of hexafluoroacetone, for example with phenol and/or o-cresol.
Claims6
In a process for the preparation of hexafluoroacetone by conversion of hexafluoropropene epoxide the improvement which comprises reacting hexafluoropropene epoxide with at least a catalytic amount of hydrogen fluoride as catalyst.
Dependencies are inferred from the claim text.