Filter membrane and method of manufacture

Details Filter membrane and method of manufacture Filter membrane and method of manufacture

1992-07-24

1993-08-24

Sever, Frank

Liquid purification or separation

Filter

Material

264 451, 264DIG48, 264DIG62, 96 12, 96 13, B01D 7176

Patent

active

052385698

ABSTRACT:
A membrane for a filter device or a device for gas or liquid separation, the membrane being constituted by a porous structure made of at least one material selected from sintered ceramic, sintered metals, microporous carbon, microporous glass, and polymers, said structure including at least one microporous layer, wherein the entire outside surface and inside surface of the pores of said structure is covered by a thin and continuous film of a polyphosphazene, the thickness of said film lying in the range 0.01% to 10% of the mean diameter of the pores of said microporous layer.

REFERENCES:
patent: 4710204 (1987-12-01), Kraus et al.
patent: 4749489 (1988-06-01), Allen et al.
patent: 4946592 (1990-08-01), Galaj et al.
patent: 5059366 (1991-10-01), Galaj et al.
patent: 5066398 (1991-11-01), Soria et al.
World Patents Index, Week 7903, Derwent Publications Ltd., London, Great Britain; AN 79-04839B & JP-A-53 139 143 (Hitachi KK) Dec. 5, 1978.

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