Process for preparing cation-exchange membrane

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

1977-06-17

1980-04-29

Spear, Jr., Frank A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

20415917, 521 27, C08F25908, C08F26502

Patent

active

042005388

ABSTRACT:
A cation-exchange membrane is prepared by swelling a fluorinated polymer membrane having cation-exchangeable groups with an organic solvent and then removing the solvent from the swollen membrane and immersing a monomer with or without a crosslinking agent and a polymerization initiator into it and polymerizing the monomer. The membrane is preferably swollen with a water miscible organic solvent and then, the solvent is removed from the membrane.

REFERENCES:
patent: 3247133 (1966-04-01), Chen
patent: 3684747 (1972-08-01), Coalson et al.
patent: 3839172 (1974-10-01), Chapiro et al.
patent: 4012303 (1977-03-01), Agostino et al.
patent: 4045352 (1977-08-01), Rembaum et al.
patent: 4132682 (1979-01-01), Seita et al.

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