SEMIPERMEABLE COMPOSITE MEMBRANE CONTAINING DENATURED POLYVINYL ALCOHOL, ITS MANUFACTURE AND ITS USE

摘要

semipermeable kompositmembranen are described on the surface of a microporous carrier a thin semi permeable film of polyvinyl alcohol. polyvinylalkoholcopolymeren showat least by ionisierbare groups supporting residues modified. the modification is carried out one, e.g.by compounds of the following component (c) or multi-stage, and the polyvinyl alcohol or the polyvinylalkoholpolymeren e.g.(a) a monomer containing at least two functional groups, organic compound(b) a linear or branched polyfunktionellen technique or polymer, and (c) a ionisierbare groups containing compound can be modified.;the new membranes show a good mechanical stability, and can in a broad temperature and ph range are used.;they are suitable, for example,the separation of the singlet ion low lonengewichts of many ions with low or high lonengewicht and singlet ions with higher lonengewicht,the separation of ionogenen of nichtionogenen compounds or compounds with different molecular weight ionogenen or of opposite charge. for example, you canfor separation of salts of organic compounds (dyes) or in wastewater treatment are used.