Process of making microporous pps membranes

Details Process of making microporous pps membranes Process of making microporous pps membranes

C - Chemistry, Metallurgy

08

J

C08J 9/26 (2006.01) B01D 67/00 (2006.01) B01D 71/66 (2006.01)

Patent

CA 2154069

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, a crystallizable polymer, and optional 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.

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