Composite semipermeable membranes and method of making same

Details Composite semipermeable membranes and method of making same Composite semipermeable membranes and method of making same

1989-05-22

1990-12-11

Spear, Frank

Liquid purification or separation

Processes

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

210490, 21050023, 21050029, B01D 6124

Patent

active

049768697

ABSTRACT:
A semipermeable hollow fiber membrane (10) consists of a first layer (12) for selectively permeating only water and water soluble substances therethrough and excluding the permeation of hydrocarbon fluids and a second layer (14) covalently bonded to the first layer (12), the second layer (14) being selective permeable only to water soluble substances and excluding water permeation therethrough. The membrane can be used for selectively separating a water soluble substance from water and transferring the water soluble substance to a hydrocarbon fluid.

REFERENCES:
patent: 4152210 (1979-05-01), Robinson et al.
patent: 4329383 (1982-05-01), Joh
patent: 4527999 (1985-07-01), Lee
patent: 4533369 (1985-08-01), Okita

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