Composite ion exchange membranes

Details Composite ion exchange membranes Composite ion exchange membranes

C - Chemistry, Metallurgy

25

B

204/202

C25B 13/04 (2006.01) C25B 1/46 (2006.01) C25B 13/08 (2006.01)

Patent

CA 1208171

ABSTRACT OF THE DISCLOSURE A composite, substantially completely fluorinated film containing ion exchange groups and its use as an ion exchange membrane in an electrolytic cell is described. The membranes are comprised of at least two layers wherein the first layer contains carboxylic acid ion exchange groups and the second layer contains sulfonyl ion exchange groups, at least one layer having an equivalent weight of less than 1000. The carboxylic acid containing layer faces the cathode in an electrolytic cell.

443988

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