Ion-exchange structures of copolymer blends useful in electrolyt

Details Ion-exchange structures of copolymer blends useful in electrolyt Ion-exchange structures of copolymer blends useful in electrolyt

1978-03-13

1979-11-27

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

204296, 204252, 428421, 525199, 525200, C25B 100, B01D 304

Patent

active

041762150

ABSTRACT:
Ion-exchange films, membranes and laminar structures incorporating a layer of a blend of a first fluorinated polymer which contains sulfonyl groups in ionizable form and a second fluorinated polymer which contains carboxylic acid functional groups, when used to separate the anode and cathode compartments of an electrolysis cell, permit operation at high current efficiency and low power consumption. They can be made by synthesis of precursor polymers in melt-fabricable form, blending, fabrication of the film, membrane or laminar structure, and hydrolysis of the functional groups to ionizable form, such as the free acid form or alkali metal salt thereof.

REFERENCES:
patent: 3853720 (1974-12-01), Korach et al.
patent: 4065366 (1977-12-01), Oda et al.

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