Supported hydrophilic membrane

Details Supported hydrophilic membrane Supported hydrophilic membrane

1989-09-05

1990-12-18

Sever, Frank

Liquid purification or separation

Filter

Material

264 41, 264451, 264 48, B01D 6700, B01D 6900

Patent

active

049784510

ABSTRACT:
A supported composite membrane (10) includes a porous support membrane (12) forming a first layer for structurally supporting a second membrane thereon. The porous support membrane (12) includes two sides (14,16) and a plurality of pores (18) extending therethrough providing fluid communication between the two sides (14,16). A nonporous water and water soluble substance permeating membrane (20) is disposed over each of the pores (18) for selectively permeating only water and water soluble substances through each of the pores (18). A method of making the membrane (10) includes the steps of forming a porous support material (12) into a first layer, and adhering a nonporous water and water soluble substance permeating membrane (20) over each of the pores (18) for selectively permeating only water and water soluble substances through each of the pores (18).

REFERENCES:
patent: 4778688 (1988-10-01), Matson
patent: 4816407 (1989-03-01), Matson

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