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Title: 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):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
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}
}

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Works referenced in this record:

Gas transport properties and structural order of poly(4,4′-oxydiphenylene piromelliteimide) in composite membranes
journal, August 1998