Electrolytic cell ion-exchange membranes

Details Electrolytic cell ion-exchange membranes Electrolytic cell ion-exchange membranes

C - Chemistry, Metallurgy

25

B

18/13, 204/202

C25B 13/00 (2006.01) C08J 5/22 (2006.01) C25C 7/04 (2006.01)

Patent

CA 1185922

ABSTRACT OF THE DISCLOSURE Electrolytic cell ion-exchange membranes, comprising fluoropolymers having pendant sulfonic acid functional groups and/or carboxylic acid functional groups, are treated with primary, secondary, and/or tertiary amines to provide dimensional stability and other improvements to the membranes. The treatment with amines provides easily-disassociable amine salts which are leached out by an aqueous leachant, e.q., cell electrolyte, thereby providing sulfonic acid groups and/or carboxylic acid groups to function as ion exchange sites in the membrane during subsequent cell operation.

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