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US 11,414,369 B2Granted
Process for the preparation of halogenated carboxylic anhydrides
AssigneeSolvay SA
InventorsHeinz Rudi Feist, Werner Rudolph
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Abstract
The present invention relates to a process for the preparation of halogenated carboxylic anhydrides, e.g. for the preparation of trifluoroacetic anhydride. The preparation is achieved by reacting a halogenated carboxylic acid, e.g. trifluoroacetic acid, with sulfuric acid, oleum and/or disulfuric acid.
Claims17
A process for the preparation of trifluoroacetic anhydride, the process comprising reacting trifluoroacetic acid with oleum.
Dependencies are inferred from the claim text.