Fluorine-containing cation exchange membrane for electrolysis ha

Details Fluorine-containing cation exchange membrane for electrolysis ha Fluorine-containing cation exchange membrane for electrolysis ha

1992-03-24

1993-11-23

Gorgos, Kathryn

Chemistry: electrical and wave energy

Apparatus

Electrolytic

521 27, C25B 1302, C25B 1308

Patent

active

052641007

ABSTRACT:
A fluorine-containing cation exchange membrane for electrolysis, which comprises a first layer of a fluorine-containing polymer having cation exchange groups and reinforced with a porous base material and a second layer of a fluorine-containing polymer having carboxylic acid groups, present on the cathode side of the first layer, wherein at least 1/2 of the thickness of the porous base material protrudes from the first layer towards the anode side, the protrusions of the porous base material are covered with a coating layer of a fluorine-containing polymer having cation exchange groups so that the coating layer is integrated with the first layer, and the anode side surface of the coating layer has a roughness corresponding to the surface contour of the porous base material.

REFERENCES:
patent: 4913817 (1990-04-01), Tsushima et al.
patent: 4990228 (1991-05-01), Perusich et al.
patent: 5149403 (1992-09-01), Shimohira et al.

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