Process for preparing cation-exchange membrane

Details Process for preparing cation-exchange membrane Process for preparing cation-exchange membrane

1977-06-27

1979-01-02

Levin, Stanford M.

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

Synthetic resins

Ion-exchange polymer or process of preparing

20415917, 204180P, 210500M, 260879, 260884, 526247, C08F25908, C08F26502, C08F27300, C08J 522

Patent

active

041326822

ABSTRACT:
A cation-exchange membrane is prepared by impregnating a diene monomer having carboxylic acid group or a functional group which can be converted to a carboxylic acid group, into a fluorinated polymer membrane having cation-exchangeable groups; partially polymerizing said diene monomer; swelling the membrane with a water miscible organic solvent and heat-treating the swollen membrane and if necessary, converting the functional groups to carboxylic acid groups.

REFERENCES:
patent: 3839172 (1974-10-01), Chapiro
patent: 4012303 (1977-03-01), D'Agostino et al.

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