Ultrafiltration, hyperfiltration or demineralization element, it

Details Ultrafiltration, hyperfiltration or demineralization element, it Ultrafiltration, hyperfiltration or demineralization element, it

1987-06-18

1990-05-15

Spear, Frank

Liquid purification or separation

Processes

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

210654, 210490, 427245, B01D 1300

Patent

active

049255665

ABSTRACT:
An ultrafiltration, hyperfiltration or demineralization element comprises a porous inorganic material support and an asymmetrical, cellular, microporous organic polymer membrane, produced on one of the faces of the porous support and fitted into the pores of the porous support flush with said surface and without projecting beyond the same.
The element is prepared by coating the inner surface of a tubular porous support with a coating solution of the organic polymer and then subjecting the coated support to a polymer insolubilization stage, which can be carried out by partial evaporation, followed by the immersion of the coated support in a coagulating bath.

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3657402 (1972-04-01), Stana et al.
patent: 4230463 (1980-10-01), Henis et al.
patent: 4277344 (1981-07-01), Cadotte
patent: 4346126 (1982-08-01), Kutowy et al.

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