Membrane with acid amide hold strength separating layers for the dehydration of liquid and vapor organics / water - mixtures

摘要

Membrane with a dense, non-porous separating layer of one or more layers of a polymer in the form of a homopolymer, copolymer, graft homo polymer and / or graft copolymer, which is crosslinked, obtainable bya) of a starting polymer is assumed which in its main chain and / or side chains at least 5 mol of -% of a monomer with acid amide units and the at least 5 mol of -% of a further monomer having carboxylic acid groups in its salt-free h - the form can contain,b) the starting polymer in an aqueous or aqueous / organic solvent to form a coating solution is at least partially dissolved,c) if the starting polymer no carboxylic acid groups in its salt-free h - the form of, in the coating solution a crosslinking agent is released, in which it isc1) in order to one or more monomolecular (n) substance (s), which has at least two carboxylic acid groups, /, and / orc2) in order to one or more oligomers and / or polymeric compound (s), the carboxylic acid groups in its salt-free h - form, are,d) a crosslinking by diacylkupplung is carried out ande) on..