Supported gas separation membrane, process for its manufacture a

Details Supported gas separation membrane, process for its manufacture a Supported gas separation membrane, process for its manufacture a

1997-12-09

1999-07-27

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

95 45, 96 8, 96 10, 96 13, 96 14, 55DIG5, B01D 5322, B01D 6912, B01D 7164

Patent

active

059284102

ABSTRACT:
A supported gas separation membrane for separating a particular component from a mixture of gases, a process for its manufacture and the use of the membrane in the separation of gases are provided in which the supported gas separation membrane comprises (a) a porous polymeric support layer and (b) an asymmetric gas separation membrane layer formed from a polyimide having repeating units of the general formula: ##STR1## wherein R is: ##STR2## and x is an integer.

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