Copolymers of tetrafluoroethylene and perfluorinated sulfonyl mo

Details Copolymers of tetrafluoroethylene and perfluorinated sulfonyl mo Copolymers of tetrafluoroethylene and perfluorinated sulfonyl mo

1993-08-11

1995-10-31

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

21050042, 526243, C08F22802

Patent

active

054630053

ABSTRACT:
Novel perfluorinated sulfonyl monomers and polymers and membranes made therefrom are provided. The fluorocarbon monomers have the general formula: ##STR1## wherein X is CH or N, I is H, K, Na, or a Group I or II metal, R.sub.f is one or more fluorocarbon group, including fluorocarbon ethers and/or sulfonyl groups and/or perfluoro-non-oxy acid groups, R.sub.f, is C.sub.n F.sub.2n+1 (n=0,1,2, . . .), Y is C.sub.n F.sub.2n+1 (n=0,1,2, . . .) and m is 0 or 1. The monomers are made from the non-oxy superacid groups ##STR2## Copolymers of the above monomers with other monomeric material such as tetrafluoroethylene are also provided. These copolymers may then be cast into ionomer membranes and other structures for use in electrochemical processing.

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