Composition membrane for separating water from fluids containing organic components by means of pervaporation
AssigneeDeutsche Carbone AG
InventorsJean M. L. Neel, Quang T. Nguyen, Hartmut Bruschke
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Abstract
Composite membrane-for separating water from fluid mixtures containing organic components by means of pervaporation comprising a separating layer of cross-linked polyvinyl alcohol, which has been subjected to a post-cross-linking by treatment with acids acting in the vapor phase on the polyvinyl alcohol layer. The acids are preferably hydrohalic acids, sulfurous acid, sulfuric acid, nitrous acid, nitric acid or acetic acid.
Claims26
Composite membrane for separating water from fluid mixtures containing organic components by means of pervaporation comprising a non-porous separating layer of cross-linked polyvinyl alcohol, characterized in that the polyvinyl alcohol separating layer has been subjected to a post-cross-linking by treatment with acids, which act in the vapor phase on said polyvinyl alcohol layer.
Dependencies are inferred from the claim text.