Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process
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United States of America Patent
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Jul 5, 1988
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N/A
app pub date -
Sep 23, 1985
filing date -
Jun 1, 1982
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Expired
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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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