Separation membrane

Details Separation membrane Separation membrane

1997-07-25

1999-10-26

Spitzer, Robert

Gas separation: apparatus

Apparatus for selective diffusion of gases

Plural layers

95 54, 96 14, B01D 5322, B01D 7164

Patent

active

059720808

ABSTRACT:
Separation membranes excellent in strength, durability, heat resistance and solvent resistance as well as in balance between substance separation properties and substance permeability are disclosed, which are formed from polyhydrazidoimide resins, and preferably comprises a non-porous dense layer formed from a polyhydrazidoimide resin obtained from the reaction of an aromatic tetracarboxylic dianhydride such as 4,4'-(hexafluoroisopropylidene)diphthalic anhydride and an aromatic dihydrazide such as isophthalic dihydrazide as essential components.

REFERENCES:
patent: Re30351 (1980-07-01), Hoehn et al.
patent: 3816303 (1974-06-01), Wrasidlo
patent: 4113628 (1978-09-01), Alegranti
patent: 4378324 (1983-03-01), Makino et al.
patent: 5015270 (1991-05-01), Ekiner et al.
patent: 5034026 (1991-07-01), Summers et al.
patent: 5034027 (1991-07-01), Tien et al.
patent: 5055114 (1991-10-01), Kawakami et al.
patent: 5061298 (1991-10-01), Burgoyne, Jr. et al.
patent: 5141642 (1992-08-01), Kusuki et al.
patent: 5232472 (1993-08-01), Simmons et al.
patent: 5248319 (1993-09-01), Ekimer et al.
patent: 5266100 (1993-11-01), Simmons
patent: 5286539 (1994-02-01), Kusuki et al.
patent: 5320650 (1994-06-01), Simmons
patent: 5334697 (1994-08-01), Simmons
patent: 5409524 (1995-04-01), Jehsvold et al.
patent: 5429748 (1995-07-01), White et al.
patent: 5635067 (1997-06-01), Macheras
Okamoto, et al., "Gas Permeability of Polyimide Films," Kobunshi Kako 1992, 41(1), 16-26 (Japan).
Okamoto, et al, "Molecular Design of Polymeric Membranes for Gas Separation," Kobunshi 1993, 42(8), 682-7.
Robeson, et al., "High Performance Polymers for Membrane Separation," Polymer, vol. 35, No. 23 4970-4978 (1994).
Xuesong et al., "Gas Permeation Properties of Some Polypyrrolones," Journal of Membrane Science, 88 (1994) 37-45.
Hidetoshi Kita, "Permeability and Permseelectivity of Gases in Polyimides and Polypyrrolones Prepared from Diaminobenzidine", Polymer Preprints, Japan, vol. 43, No. 7 (1994).
Yongli Mi, "Criteria for Synthesizing Highly Selective Membrane Materials", Hyoumen (Surface), vol. 33 (No. 5) (1995) 308-319.
Y. Hirayama, et al., "Relation of Gas Permeability with Structure of Aromatic Polyimides I," Journal of Membrane Science 111 (1996) 169-182.
T. Unishi, Polymer Letters, "Preparation of Aromatic Polyimide-Amide," vol. 3, pp. 679-683 (1965).
Unishi et al., "The Synthesis of Polypryromellitimide-amide," Yuki Gosei Kagaku (Journal of Synthetic Organic Chemistry; Japan), vol. 23, pp. 1028-1033.
Imai et al., "Polymers Containing Pyromellitimide Units," Die Makromolekulare Chemie 94 (1966) 144-123.
Motoo, Saga et al., "The Syntheses of Polypryomellitimide-amides," Bulletin of Chemical Society of Japan, vol. 39 (1966) 1795-1800.
Terunobu et al., "Poly(pyromellitimideamides)," Kogyo Kagaku Zasshi (Journal of the Chemical Society of Japan, Industrial Chemical Section), vol. 70, pp. 192-195 (1967).

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