Composite ion exchange membranes

Details Composite ion exchange membranes Composite ion exchange membranes

C - Chemistry, Metallurgy

25

B

204/156, 204/202

C25B 1/46 (2006.01) C08J 5/22 (2006.01) C25B 13/08 (2006.01)

Patent

CA 1204079

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 layers have equivalent weights that differ by less than 150 and contain ion exchange groups. When each layer contains sulfonyl ion exchange groups the equivalent weight of the two layers differ by less than 250.

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