Fluorinated ion exchange membrane containing...

Details Fluorinated ion exchange membrane containing... Fluorinated ion exchange membrane containing...

C - Chemistry, Metallurgy

25

B

18/13, 204/202,

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

Patent

CA 1071571

ABSTRACT OF THE DISCLOSURE Pendant side chains containing sulfonyl groups attached to carbon atoms having at least one fluorine atom connected thereto are present as N-monosubstituted sulfon- amido groups in fluorinated polymers. Films of the polymers may serve for ion exchange purposes generally, and in particular as membranes in electrolysis cells. Composite films having one surface of such polymer have shown outstanding application as membranes in chlor-alkali cells with high current efficiency and minimization of anion transport of hydroxyl ions.

284465

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