Microporous membranes of ultrahigh molecular weight polyethylene

Details Microporous membranes of ultrahigh molecular weight polyethylene Microporous membranes of ultrahigh molecular weight polyethylene

1984-10-09

1988-10-18

Sever, Frank

Liquid purification or separation

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Material

21050036, B01D 1300

Patent

active

047786019

ABSTRACT:
Microporous membranes and methods for producing such membranes from ultrahigh molecular weight polyethylene are described. The method employs extrusion of a solution of UHMW-PE and porogen through a forming die followed by thermal phase separation of polymer and porogen. Microporous structures are created by removing porogen. Microporous membranes produced include membranes with good permeability to air and water making them particularly useful as filtration media and water-resistant breathable membranes.

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