The purification of .alpha.,.beta. or .gamma.-substituted...

C - Chemistry – Metallurgy – 07 – C

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C07C 51/42 (2006.01) B01D 61/44 (2006.01) C07C 59/125 (2006.01) C07C 67/48 (2006.01) C07C 69/708 (2006.01) C07C 209/88 (2006.01) C25B 3/00 (2006.01) C07C 211/27 (2006.01)

Patent

CA 2225290

The process for purifying an .alpha.-, or .beta.-, or .gamma.-substituted carboxylic acid or a salt or an ester thereof or a mixture of two or more thereof from an aqueous solution which contains an .alpha.-, .beta.- or .gamma.-substituted carboxylic acid or a salt or an ester thereof or a mixture of two or more thereof and at least one polyol or at least one amino alcohol, wherein the solution is treated by electrodialysis.

Procédé pour purifier un acide carboxylique avec substitution en alpha, bêta ou gamma, ou un de ses sels ou esters, ou encore un mélange de deux ou plusieurs de ces composés, dans une solution aqueuse renfermant un acide carboxylique avec substitution en alpha, bêta ou gamma, ou un de ses sels ou esters, ou encore un mélange de deux ou plusieurs de ces composé, avec au moins un polyol ou au moins un aminoalcool; la solution est traitée par électrodialyse.

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