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US 4,051,002 AGranted
Electrodialysis for aqueous solution of base
AssigneeAsahi Glass Company, Limited
InventorsTomoki Gunjima, Toshio Ichiki
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Abstract
In an electrodialysis process for aqueous base-containing solutions the improvement which comprises using a cation-exchange membrane made of a copolymer of ethylene and an unsaturated carboxylic acid or a salt thereof having an ion-exchange capacity of 0.7 to 3 m equivalent/g (dry resin).
Claims12
In an electrodialysis process for aqueous base-containing solutions the improvement which comprises using a sulfonic acid group-free cation-exchange membrane which is a copolymer of ethylene and an unsaturated carboxylic acid or a salt thereof having an ion-exchange capacity of 0.7 to 3 m equivalent/g (dry resin).
Dependencies are inferred from the claim text.