Supported microporous filtration membrane and method of...

Details Supported microporous filtration membrane and method of... Supported microporous filtration membrane and method of...

Category

B - Operations, Transporting

Subcategory

01

Subsubcategory

D

IPC codes

B01D 69/10 (2006.01) B01D 61/00 (2006.01) B01D 67/00 (2006.01)

Type

Patent

Patent number

CA 2102873

Description

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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