Technique of prestressing semi-permeable membranes

Details Technique of prestressing semi-permeable membranes Technique of prestressing semi-permeable membranes

C - Chemistry, Metallurgy

25

B

204/156, 204/186

C25B 1/00 (2006.01) C08J 5/22 (2006.01) C25B 1/46 (2006.01) C25B 9/08 (2006.01) C25B 11/02 (2006.01) C25B 13/08 (2006.01)

Patent

CA 1179635

ABSTRACT OF THE DISCLOSURE An electrolytic cell suitable for use in electrolyzing ionizable chemical compounds, particularly alkali metal halide brines and hydrohalic acids, which comprises a cell body having an anode compartment containing a porous anode and a cathode compartment containing a cathode said compartments being sepa- rated from each other by a barrier which is substantially impervious to gases and liquids and which is selected from a hydrolyzed copolymer of a perfluorinated hydrocarbon and a sulfonated perfluorinated hydrocarbon and a sulfonated perfluoro- vinyl ether, and a sulfostyrenated perfluorinated ethylene propylene polymer, said barrier being clamped or stretched to the front face of said porous anode. Such cells can be operated at constant low voltage, and are not subject to erratic operating voltages which are due, in part at least, to the accumulation of gases between the anode and diaphragm.

213657

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