Purification of onium hydroxides by electrodialysis

Details Purification of onium hydroxides by electrodialysis Purification of onium hydroxides by electrodialysis

C - Chemistry, Metallurgy

07

C

C07C 209/84 (2006.01) B01D 61/44 (2006.01) C02F 1/469 (2006.01) C07C 211/63 (2006.01)

Patent

CA 2478768

This invention relates to a process for improving the purity of an aqueous onium hydroxide solution. In particular, the invention relates to a process for improving the purity of aqueous onium hydroxide solutions containing undesirable amounts of anions. The invention also relates to the improved high purity onium hydroxide solutions obtained by the above method.

L'invention concerne un procédé pour améliorer la pureté d'une solution aqueuse d'hydroxyde d'onium. L'invention concerne notamment un procédé pour améliorer la pureté de solutions aqueuses d'hydroxyde d'onium contenant des quantités indésirables d'anions. L'invention concerne également les solutions d'hydroxyde d'onium améliorées de grande pureté obtenues par le procédé selon l'invention.

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