Ion exchange membrane for electrolysis

Details Ion exchange membrane for electrolysis Ion exchange membrane for electrolysis

1988-06-15

1989-10-10

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204128, 204252, 204296, 521 27, C25B 116, C25B 126, C25B 1308

Patent

active

048729582

ABSTRACT:
An ion exchange membrane for electrolysis comprising a first layer of a fluoropolymer having carboxylic acid groups as its ion exchange groups and facing a cathode, a second layer of a fluoropolymer having ion exchange groups, a specific resistance lower than that of the first layer and a thickness of at least 50% of the total thickness of the membrane, and a third layer of a fluoropolymer having ion exchange groups, a swelling degree higher by at least 5% than that of the second layer and a specific resistance lower by at least 30 .OMEGA..cm than that of the second layer, the first, second and third layers being laminated in this order.

REFERENCES:
patent: 4586992 (1986-05-01), Miyake et al.
patent: 4610764 (1986-09-01), Asawa et al.
patent: 4686120 (1987-08-01), Johnson

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