Films of fluorinated polymer containing sulfonyl groups

Details Films of fluorinated polymer containing sulfonyl groups Films of fluorinated polymer containing sulfonyl groups

C - Chemistry, Metallurgy

25

B

18/13, 204/156,

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

Patent

CA 1133668

FILMS OF FLUORINATED POLYMER CONTAINING SULFONYL GROUPS WITH ONE SURFACE IN THE SULFONAMIDE OR SULFONAMIDE SALT FORM AND A PROCESS FOR PREPARING SUCH ABSTRACT A film useful as an ion exchange membrane of fluorinated polymer containing pendant side chains con- taining sulfonyl groups which are attached to carbon atoms which have at least one fluorine atom attached thereto; one surface of the film having a majority of the sulfonyl groups of the polymer in the -(SO2NH)mQ form wherein Q is H, NH4, cation of an alkali metal and/or cation of alkaline earth metal and m is the valence of Q and the other surface of the film having the sulfonyl groups in the -(SO3)nMe form wherein Me is a cation and n is the valence of the cation and processes for preparing the film. ABSTRACT

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