Cation exchange membrane of flurorinated polymer for an...

Details Cation exchange membrane of flurorinated polymer for an... Cation exchange membrane of flurorinated polymer for an...

C - Chemistry, Metallurgy

08

F

204/202

C08F 8/36 (2006.01) C08J 5/22 (2006.01) C25B 1/46 (2006.01)

Patent

CA 1171385

ABSTRACT OF THE DISCLOSURE A cation exchange membrane of a fluorinated polymer for use in electrolysis comprises a copolymer of a fluorinated olefin and a fluorovinyl compound having the formula Image wherein X represents -F or -CF3; Y and Y' respectively represents -F or a C1 - C10 perfluoroalkyl group; l is 0 to 3; m is 0 or 1; n is 0 to 12 and M represents hydrogen atom or an alkali metal atom; and a modified surface layer of said cation exchange membrane on the anode side which has -SO3M groups formed by converting -COOM groups

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