Process for preparing quaternary ammonium hydroxides

Details Process for preparing quaternary ammonium hydroxides Process for preparing quaternary ammonium hydroxides

C - Chemistry, Metallurgy

25

C

204/53, 204/43.1

C25C 3/00 (2006.01) C07C 209/00 (2006.01) C25B 3/00 (2006.01)

Patent

CA 1335973

A process is described for preparing quaternary ammonium hydroxides of improved purity. In one embodiment, the present invention relates to a process of preparing quaternary ammonium hydroxides from the quaternary ammonium salts in an electrolytic cell which comprises an anolyte compartment containing an anode and a catholyte compartment containing a cathode and water, said anolyte and catholyte compartments being separated from each other by a cation-exchange membrane, said process comprising the steps of (a) providing the catholyte compartment with a cathode of zinc, cadmium, tin, lead, or alloys thereof, mercury, or mercury amalgam, (b) charging an aqueous solution containing a quaternary ammonium salt to the anolyte compartment, (c) passing a current through the electrolytic cell to produce quaternary ammonium hydroxide in the catholyte compartment, and (d) recovering the quaternary ammonium hydroxide from the catholyte compartment.

606091

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