Multilayer cation exchange membrane

Details Multilayer cation exchange membrane Multilayer cation exchange membrane

1986-04-28

1987-08-11

Valentine, Donald R.

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

4273855, 428334, 428421, 428422, 204296, B05D 312, B05D 302, B32B 2700

Patent

active

046861203

ABSTRACT:
A cation exchange membrane is disclosed comprising fluorinated polymer layers which include, in order, a layer with sulfonic exchange groups, a layer with carboxylic exchange groups, and a thinner layer with carboxylic exchange groups at a greater exchange capacity than the other carboxylic layer.

REFERENCES:
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patent: 4455210 (1984-06-01), Coker et al.
patent: 4455471 (1985-10-01), Silva et al.
patent: 4486277 (1984-12-01), Miyake et al.
patent: 4490484 (1984-12-01), Bissot et al.
patent: 4595476 (1986-06-01), Bissot
patent: 4610764 (1986-09-01), Asawa et al.

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