Ultrathin polyetherimide membrane and gas separation process

Details Ultrathin polyetherimide membrane and gas separation process Ultrathin polyetherimide membrane and gas separation process

1977-09-23

1979-05-29

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 66, 55 68, 55 70, B01D 5912

Patent

active

041565975

ABSTRACT:
Disclosed is an ultrathin permselective polyetherimide membrane having an average thickness of less than about 10 microns and formed of a polymeric composition comprising a polyetherimide prepared by reacting metaphenylenediamine and certain aromatic bis(ether anhydride)s. A gas separation process employing the membrane is also disclosed.

REFERENCES:
patent: 3847867 (1974-11-01), Heath et al.
patent: 3857782 (1974-12-01), Crowley
patent: 3892665 (1975-07-01), Steigelmann et al.
patent: 3899309 (1975-08-01), Hoehn et al.
patent: 3930990 (1976-01-01), Brun et al.
patent: 3951815 (1976-04-01), Wrasidlo
patent: 3979190 (1976-09-01), Hedman
patent: 3992495 (1976-11-01), Sano et al.
patent: 4033731 (1977-07-01), Bargain et al.
patent: 4039440 (1977-08-01), Cadotte
patent: 4071590 (1978-01-01), Strathmann

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