Process for the recovery of perfluoroethercarboxylic acids

Details Process for the recovery of perfluoroethercarboxylic acids Process for the recovery of perfluoroethercarboxylic acids

C - Chemistry, Metallurgy

07

C

C07C 51/487 (2006.01) C07C 51/41 (2006.01) C07C 59/135 (2006.01)

Patent

CA 2058338

- ? - HOE 90/F. 388 Abstract: Process for the recovery of perfluoroethercarboxylic acids The invention relates to a process for the recovery of perfluoroethercarboxylic acids from the crude product of the electrochemical conversion of these acids or of one of their soluble salts to perfluorinated ethers, in which the perfluoroethercarboxylic acids and their esters contained in the crude product are separated off with the aid of a solid basic alkali metal salt or its solution and converted, by reaction of the resulting salts with a strong acid, to the corresponding perfluoroethercar- boxylic acids.

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