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

1990-01-25

1992-10-20

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

21050042, B01D 6136

Patent

active

051567407

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 or the separation of water-alcohol mixtures according to the pervaporation process.

REFERENCES:
patent: 3035060 (1962-05-01), Binning et al.
patent: 3276996 (1966-10-01), Lazare
S. Peter and W. Noetzel, Kolloid-Z. u. Z fur Polymere, 183, p. 97 (1962).
S. Peter and H. Fasender, Kolloid-Z u. Z. fur Polymere 196, p. 125 (1963).
S. Peter and D. Mittelstadt, Kolloid-Z u. Z. fur Polymere 251, pp. 225-231 (1973).
Lobel, et al., "Unstirred-Layer Controlled Transport of Organic Bases and Drugs through Solvent-Type Membranes and the influence of Bound Enzymes," 6 Journal of Membrane Science, pp. 203-233 (1980).
H. Eustache, e al., "Separation of Aqueous Organic Mixtures by Pervaportion and Analysis by Mass Spectrometry or a Coupled Gas Chromatograph-Mass Spectrometer," 8 Jr. of Membrane Sc., pp. 105-114 (1981).
F. Kainer, Polyvinylalkohole.
Dytnerski, Memranprozesse zur Trennung flussiger Gemische, p. 155 (1977).
R. Y. M. Huang and N. R. Jarvis, "Separation of Liquid Mixtures Using Polymer Membranes," Journal of Applied Polymer Science, p. 2341 (1970).
G. Spencer, Diffusion Coefficients in Water Vapor-Poly(vinyl Alcohol) Systems, Journal of Polymer Science, p. 2067 (1968).
T. Sano, Central Research Laboratory Sumitomo Chemical Co., Ltd., "A New Reverse Osmosis Membrane Made of Polyacylnitrile," Chemical Economy & Engineering Review, May 1980.

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