Method of improving characteristic of cation-exchange membrane

Details Method of improving characteristic of cation-exchange membrane Method of improving characteristic of cation-exchange membrane

C - Chemistry, Metallurgy

08

J

18/13

C08J 5/22 (2006.01)

Patent

CA 1102971

ABSTRACT OF THE DISCLOSURE A homogeneous cation-exchange membrane made of at least one fluorinated polymer having cation-exchangeable groups is swollen with a water miscible organic solvent, the solvent is then removed from the swollen membrane and membrane is then treated with hydrochloric acid. The cation-exchange membrane of the fluorinated polymer having cation-exchangeable groups is modified to reduce the permeability of hydroxyl group ions by swelling it, removing the water-miscible organic solvent and then, treating it with hydrochloric acid.

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