Gas separation: apparatus – Apparatus for selective diffusion of gases – Plural layers
Patent
1996-05-03
1998-02-10
Spitzer, Robert
Gas separation: apparatus
Apparatus for selective diffusion of gases
Plural layers
96 14, 21050039, B01D 7164, B01D 6912
Patent
active
057164304
ABSTRACT:
Useful gas separation membranes made from aromatic polyimides which comprise pendant nitro groups incorporated onto the phenyl backbone of the polymer. These polymers may be synthesized by the aryl nitration of the unsubstituted polyimides, or from the condensation reaction of aromatic diamines containing pendant nitro groups with aromatic dianhydrides, and are particularly useful in air separation.
REFERENCES:
patent: 4732586 (1988-03-01), Dick et al.
patent: 4952220 (1990-08-01), Langsam et al.
patent: 4988371 (1991-01-01), Jeanes et al.
patent: 5015270 (1991-05-01), Ekiner et al.
patent: 5042993 (1991-08-01), Meier et al.
patent: 5055116 (1991-10-01), Kohn et al.
patent: 5080698 (1992-01-01), Krizan
patent: 5152811 (1992-10-01), Sanders, Jr. et al.
patent: 5178940 (1993-01-01), Matsumoto et al.
patent: 5232471 (1993-08-01), Chen et al.
patent: 5232472 (1993-08-01), Simmons et al.
patent: 5248319 (1993-09-01), Ekiner et al.
patent: 5286539 (1994-02-01), Kusuki et al.
patent: 5320650 (1994-06-01), Simmons
patent: 5334697 (1994-08-01), Simmons
Ghosal, et al., Journal of Polymer Science, Part B: Polymer Physics, "The Effect of Aryl Nitration on Gas Sorption and Permeation in Polysulfone," 33, 657 (1995).
Ghosal and Chern, Journal of Membrane Science, "Aryl-Nitration of Poly(phenylene Oxide) and Polysulfone. Structural Characterization and Gas Permeability," 72, 91 (1992).
Kamps, et al., Journal of Membrane Science, "Gas Transport and Sub-T.sub.g Relaxations in Unmodified and Nitrated Polyarylethersulfones" 74, 193 (1992).
L'Air Liquide Societe Anonyme Pour l'Etude et, l'Exploitation de
Spitzer Robert
Touslee Robert D.
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