Heat-treated fluorocarbon sulfonylamine cation permselectivity

Details Heat-treated fluorocarbon sulfonylamine cation permselectivity Heat-treated fluorocarbon sulfonylamine cation permselectivity

1973-12-17

1976-07-13

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 793M, 204262, C08J 522

Patent

active

039692850

ABSTRACT:
Fluorinated cation exchange polymers are obtained from intermediate fluorinated polymers containing pendant sulfonyl halide groups which are reacted with a di- or polyamine and subjected to elevated temperature of the order of 170.degree. to 300.degree.C. The polymers are desirably employed with pendant side groups in the salt form. The polymers possess perm-selectivity giving desirable performance in electrolytic cells such as chlor-alkali cells as well as membrane ion exchanger and reverse osmosis devices.

REFERENCES:
patent: 3041317 (1962-06-01), Gibbs et al.
patent: 3240723 (1966-03-01), Friedlander
patent: 3282875 (1966-11-01), Connolly
patent: 3647086 (1972-03-01), Mizutani et al.

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