Polymide gas separation membranes
Patent
·
OSTI ID:1175026
Soluble polyamic acid salt (PAAS) precursors comprised of tertiary and quaternary amines, ammonium cations, sulfonium cations, or phosphonium cations, are prepared and fabricated into membranes that are subsequently imidized and converted into rigid-rod polyimide articles, such as membranes with desirable gas separation properties. A method of enhancing solubility of PAAS polymers in alcohols is also disclosed.
- Research Organization:
- Praxair, Inc., Danbury, CT (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-99FT40497
- Assignee:
- Praxair Technology, Inc. (Danbury, CT)
- Patent Number(s):
- 6,790,263
- Application Number:
- 09/661,902
- OSTI ID:
- 1175026
- Country of Publication:
- United States
- Language:
- English
Gas transport properties and structural order of poly(4,4′-oxydiphenylene piromelliteimide) in composite membranes
|
journal | August 1998 |
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