Liquid purification or separation – Filter – Material
Patent
1986-05-30
1988-06-07
Therkorn, Ernest G.
Liquid purification or separation
Filter
Material
21050021, C02F 144, B01D 1300
Patent
active
047494891
ABSTRACT:
A semipermeable, inorganic membrane is disclosed; the membrane is prepared from a phosphazene polymer and, by the selective substitution of the constituent groups bound to the phosphorous in the polymer structure, the selective passage of fluid from a feedstream can be controlled. Resistance to high temperatures and harsh chemical environments is observed in the use of the phosphazene polymers as semipermeable membranes.
REFERENCES:
patent: 4710204 (1987-12-01), Kraus
Allock, H. R. "Phosphorus-Nitrogen Compounds-cyclic, Linear and High Polymeric Systems", Academic Press, N.Y., 1972, Chap. 16.
McAtee, R. E. et al., "The Synthesis and Casting of Phosphazene . . . " Abs. From Workshop of Phos. Chem., U.S. Naval Acad. Nov. 6-7, 1985, 1 page.
Allen, C. A. et al., "Polyphosphazene Membrane Research . . . ", Abs. From Workshop of Phos. Chem., U.S. Naval Acad., Nov. 6-7, 1985, 1 page.
Allcock, H. R. et al., "PHosphonitrilic Compounds . . . ", Inorganic Chemistry, 5, No. 10, Oct. 1966, p. 1709-1715.
Singler, R. E., et al., "Synthesis and Characterization of Polyacryloxyphozenes", J. of Poly. Science: Polymer Chem. Ed., vol. 12, 1974, p. 433-444.
Allcock, H. R. et al., "Phosphonitrile Compounds . . . ", Inorganic Chemistry, vol. 11, No. 11, 1972, p. 2584-2590.
Allcock, H. R. "Phosphazene High Polymers", Chemistry in Britain, vol. 10 (4), 1974, p. 118-121.
Allcock, H. R. "Poly(Organophospaazenes) . . . ", Angew. Chem. Int. Ep. Engl. vol. 16, 1977, p. 147-156.
Allock, H. R. "Inorganic Macromolecules", C+EN, vol. 63, No. 11, Mar. 18, 1985, p. 22-34.
Allen, C. A. et al. "Inorganic Membrane Techology", Abs., Northwest Am. Chem. Soc. Jun. 19-21, 1985, No. 139.
Allen, C. A. et al., "Inorganic Membrane Technology", Abs. From The Symp. On Sep. Science and Tech. For Engy. Appl., Oct. 20-24, 1985, p. 49.
Allen Charles A.
Cummings Daniel G.
Grey Alan E.
Jessup Janine S.
McAtee Richard E.
Anderson Thomas G.
Hightower Judson R.
The United States of America as represented by the United States
Therkorn Ernest G.
Weinberger James W.
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