Composite membrane, process of manufacturing it and process of u

Details Composite membrane, process of manufacturing it and process of u Composite membrane, process of manufacturing it and process of u

1995-03-23

1998-12-15

Drodge, Joseph W.

Liquid purification or separation

Processes

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

210490, 21050042, 210640, 264 451, B01D 6100, B01D 6136, B01D 6912, B01D 7130

Patent

active

058491953

ABSTRACT:
Disclosed is a composite membrane for removing water from dilute organic or inorganic acids by pervaporation or vapor permeation. The composite membrane in accordance with the invention is of a porous carrier layer, a porous backing layer, and a non-porous separating layer, which consists of a PVC-PCac copolymer having a PVac content of 10 to 25% by weight of the copolymer.

REFERENCES:
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patent: 4100238 (1978-07-01), Shinomura
patent: 4377481 (1983-03-01), Jakabhazy
patent: 4797187 (1989-01-01), Davis et al.
patent: 4952318 (1990-08-01), Pasternak et al.
patent: 5164088 (1992-11-01), Hanel et al.
patent: 5183571 (1993-02-01), Hanel et al.

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