Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1986-06-02
1988-04-19
Niebling, John F.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204 11, 521 27, 521 33, 264204, 264216, 26433115, 264344, C25B 1308
Patent
active
047387645
ABSTRACT:
Permselective membranes are disclosed which comprise a layer comprising polystyrene, at least a portion of which is sulfonated, and between about 10 wt. % and about 35 wt. % monovinyl arene-hydrogentated diene block copolymer, at least a portion of which is sulfonated. The membranes exhibit a resistance of less than about 8 .OMEGA.-cm.sup.2 in 7 wt. % Na.sub.2 SO.sub.4 and an ion exchange capacity of between about 1.0 meq/g and about 1.6 meq/g. Monopolar and bipolar membranes comprising the layer are disclosed. A preferred process for forming the membranes comprises the steps of sulfonating polystryene and monovinyl arene-hydrogenated diene block copolymer, forming a mixture of the materials in a solvent, forming a layer of the mixture and drying the layer to form at least a portion of the membrane.
REFERENCES:
patent: 4166014 (1979-08-01), Sata et al.
patent: 4169023 (1979-09-01), Sata et al.
patent: 4287042 (1981-09-01), Ebdon et al.
patent: 4326914 (1982-04-01), Hohne
patent: 4537668 (1985-08-01), Gaussens et al.
patent: 4645579 (1987-02-01), Weiss et al.
Chlanda Frederick P.
Cooke Robert S.
Allied Corporation
Fuchs Gerhard H,.
Negin Richard A.
Niebling John F.
Rubino Kathryn
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