Multi-layer membrane and the use thereof for the separation of l

Details Multi-layer membrane and the use thereof for the separation of l Multi-layer membrane and the use thereof for the separation of l

1985-09-23

1988-07-05

Therkorn, Ernest G.

Liquid purification or separation

Processes

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

21032184, 21050032, 21050041, 21050042, 21050043, 55 16, B01D 1300

Patent

active

047552999

ABSTRACT:
A multi-layer membrane having a porous backing layer of polyacrylonitrile, polysulfone or the like, and an active separating layer of polyvinyl alcohol or cellulose acetate. The membrane is particularly suitable for the separation of water-alcohol mixtures according to the pervaporation process.

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patent: 4220543 (1980-09-01), Yamashita
patent: 4230463 (1980-10-01), Henis et al.
patent: 4239506 (1980-12-01), Steigelmann et al.
patent: 4340481 (1982-07-01), Mishiro et al.
patent: 4543221 (1985-09-01), Chen et al.
Odian, M. et al., "Synthesis and Evaluation of Graded Polyvinyl Alcohol Membranes", T.A.S.A.I.O., vol. 14, 1968, pp. 19-23.
VDI Search Report (Series 3:Process Technology) 40, Dr. K. W. Boddeker, "Pervaporation Through Membranes and It's Use in Separation of Liquid Mixtures".
IVT Information, vol. 16 (No. 2):19 Prof. Dr.-Ing. Rautenbach.
R. Rautenbach, Investigation on Mass Transport in Asymmetric Pervaporation Membranes, accepted for publication in "Journal of Membrane Science".
Gmelin Handbuch der Anorganischen Chemie, Water Desalting, pp. 272 and 273, New York 1974.
Zeitung zur Achema (1985), No. 9, p. 30ff.

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