Polymide gas separation membranes
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Praxair, Inc., Danbury, CT (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175026
- Patent Number(s):
- 6790263
- Application Number:
- 09/661,902
- Assignee:
- Praxair Technology, Inc. (Danbury, CT)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- DOE Contract Number:
- FC26-99FT40497
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Ding, Yong, Bikson, Benjamin, and Nelson, Joyce Katz. Polymide gas separation membranes. United States: N. p., 2004.
Web.
Ding, Yong, Bikson, Benjamin, & Nelson, Joyce Katz. Polymide gas separation membranes. United States.
Ding, Yong, Bikson, Benjamin, and Nelson, Joyce Katz. Tue .
"Polymide gas separation membranes". United States. https://www.osti.gov/servlets/purl/1175026.
@article{osti_1175026,
title = {Polymide gas separation membranes},
author = {Ding, Yong and Bikson, Benjamin and Nelson, Joyce Katz},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {9}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Gas transport properties and structural order of poly(4,4′-oxydiphenylene piromelliteimide) in composite membranes
journal, August 1998
- Polotskaya, G. A.; Kostereva, T. A.; Elyashevich, G. K.
- Separation and Purification Technology, Vol. 14, Issue 1-3