Process for making a microporous membrane from a blend containin

Details Process for making a microporous membrane from a blend containin Process for making a microporous membrane from a blend containin

1990-12-28

1993-04-27

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, 21050041, 264 41, 264184, 264203, 2642103, 2642104, 2642106, 26421118, 26421119, 2642112, 264216, 264235, 2642356, 264346, B29C 6720

Patent

active

052059685

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, an amorphous 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, and/or after leaching.

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