Electrodialysis membranes of high interstitial molality based up

Details Electrodialysis membranes of high interstitial molality based up Electrodialysis membranes of high interstitial molality based up

1979-03-02

1980-11-04

Prescott, Arthur C.

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

204296, 521 27, B01D 1302

Patent

active

042318556

ABSTRACT:
This invention relates to cross-linked copolymers of methacrylate esters containing ionogenic functional groups capable of being converted into high efficiency electro-dialysis membranes. Such totally aliphatic polymer membranes have been found to give electrical resistances which can be as low as one half that of membranes previously synthesized as well as higher interstitial molality. This reduced resistance, in concert with a high degree of chemical and physical stability enables water desalination by electrodialysis to be performed over longer periods of useful membrane life and at a lower expenditure of electrical energy per thousand gallons of water desalted.

REFERENCES:
patent: 2777811 (1957-01-01), McRae et al.
patent: 2800445 (1957-07-01), Clarke
patent: 4052343 (1977-10-01), Cunningham

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