Composite semipermeable membrane created by precipitation of emu

Details Composite semipermeable membrane created by precipitation of emu Composite semipermeable membrane created by precipitation of emu

1991-02-19

1991-12-24

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210654, B01D 6102, B01D 6114

Patent

active

050750119

ABSTRACT:
A composite semipermeable membrane having improved chlorine tolerance, produced by employing the development of a thin film polymer layer by precipitation of the polymer at the interface of an aqueous (or organic) liquid layer; and an aqueous emulsion polymer layer at or near the surface of a semiporous support or substrate. No chemical reaction is involved.

REFERENCES:
patent: 4913816 (1990-04-01), Waite

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