Surfactant treatment of aromatic polyimide gas separation membra

Details Surfactant treatment of aromatic polyimide gas separation membra Surfactant treatment of aromatic polyimide gas separation membra

1989-10-10

1991-07-23

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, B01D 5322, B01D 7164

Patent

active

050340247

ABSTRACT:
A process for improving the permselectivity of an aromatic polyimide gas separation membrane comprising contacting the membrane with a solution of a surfactant in a solvent which swells the membrane but in which the membrane material is soluble to an extent of no more than 3% under the conditions used to contact the membrane.

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