Process of making microporous membranes from poly(etheretherketo

Details Process of making microporous membranes from poly(etheretherketo Process of making microporous membranes from poly(etheretherketo

1990-12-21

1993-07-13

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

21050027, 21050028, 264 41, 264184, 264203, 2642103, 2642104, 2642106, 26421114, 26421116, 26421119, B29C 3500, B29C 6720

Patent

active

052271013

ABSTRACT:
The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, a low melting point crystallizable polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof.

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