Composite nanofiltration membrane

Details Composite nanofiltration membrane Composite nanofiltration membrane

1992-04-30

1993-11-30

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210490, 21050028, 210506, 210509, 210651, B01D 6100, B01D 2900

Patent

active

052662071

ABSTRACT:
Mechanically strong and thermally/chemically-resistant composite nanofiltration membranes, well adapted for the separation of low molecular weight compounds, comprise a porous inorganic support substrate, the pore diameters of which ranging from 3 to 10 nm, this inorganic support substrate having a polymer membrane which comprises an elastomeric polyphosphazene densely deposited on at least one of the face surfaces thereof, the structural porosity of such polyphosphazene membrane ranging from 0.2 to 2 nm.

REFERENCES:
patent: 4230463 (1980-10-01), Henis et al.
patent: 4710204 (1987-12-01), Kraus et al.
patent: 4728348 (1988-03-01), Murphy
patent: 4749469 (1988-06-01), Allen et al.
patent: 4749489 (1988-07-01), Allen et al.
patent: 4783202 (1988-01-01), Kraus et al.
patent: 4814132 (1989-03-01), Aoki et al.
patent: 4880441 (1989-01-01), Kesting et al.
Proc First Intern Conf. Inorganic Membranes'1989, Montpellier (Fr) Jul. 1989, 3-6, pp. 55-64, 1990 C. Guizard et al: A New Generation of Membranes etc.

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