Supported microporous filtration membrane and method of using sa

Details Supported microporous filtration membrane and method of using sa Supported microporous filtration membrane and method of using sa

1993-07-12

1995-07-18

Dawson, Robert A.

Liquid purification or separation

Processes

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

210490, 21050038, 21050036, 210508, 2104931, B01D 6100

Patent

active

054338590

ABSTRACT:
The present invention provides a supported microporous filtration membrane comprising a porous nonwoven fibrous support material having first and second sides, and a continuous microporous membrane having first and second zones, wherein the first side of the support material is integral with the first zone while not protruding into the second zone, and the first zone has a pore size at least about 50% greater than the pore size of the second zone. A method of preparing such a supported microporous membrane is also provided by the present invention.

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