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

1993-02-03

1999-03-30

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

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

264 41, 264184, 264203, 264205, 2642103, 2642104, 2642106, 264211, 26421112, 26421114, 26421115, 26421116, 26421118, 26421119, 2642112, 264216, 264235, 2642356, 2642888, 2642896, 2642905, 264346, B29C 6720, D01D 5247

Patent

active

058884343

ABSTRACT:
The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(phenylene sulfide) polymer by forming a mixture of an unsulfonated poly(phenylene sulfide) polymer, an amorphous polymer, and optionally a plasticizer, heating the resulting mixture, extruding or optionally casting the mixture into a membrane, controlled cooling (quenching) or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.

REFERENCES:
patent: 5043112 (1991-08-01), Beck
patent: 5205968 (1993-04-01), Damrow et al.

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