Membrane with a pore-free separation layer of a crosslinked polymer as a homo-, co- or graft-polymer used for dewatering aqueous/organic mixtures

摘要

Membrane with a pore-free separation layer with a crosslinked polymer as a homo-, co- or graft-polymer is obtained by dissolving a starting polymer with monomer with acid amide units in the main and/or side chain and monomer with carboxylic acid groups in their salt-free H form. Dissolving as crosslinker a monomolecular compound and/or an oligomer or polymer, crosslinking. Membrane with a pore-free separation layer with a crosslinked polymer as a homo-, co- or graft-polymer is obtained by dissolving a starting polymer with at least 5 mol.% monomer with acid amide units in the main and/or side chain and at least 5 mol.% monomer with carboxylic acid groups in their salt-free H form, dissolving as crosslinker a monomolecular compound with at least 2 carboxylic acid groups and/or an oligomer or polymer with carboxylic acid groups in their salt-free H form, crosslinking via diacyl coupling and applying a separation layer.