Preparation of poly(phenylene oxide) asymmetric gas separation m

Details Preparation of poly(phenylene oxide) asymmetric gas separation m Preparation of poly(phenylene oxide) asymmetric gas separation m

1989-07-11

1990-07-31

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, 264178F, 26421114, B01D 5322, B01D 6904, B01D 7138

Patent

active

049447750

ABSTRACT:
A process for producing integrally-skinned asymmetric poly(phenylene oxide) gas separation membranes is disclosed. The process involves forming a solution of the poly(phenylene oxide) in an aprotic solvent at an elevated temperature, forming a nascent membrane from the solution, partially drying the nascent membrane, followed by coagulating the partially dried nascent membrane in a coagulation bath formed from a non-solvent for the poly(phenylene oxide) which non-solvent is miscible with the aprotic solvent.

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