| 摘要 |
1. Use of photocrosslinkable copolymers based on ethylenically unsaturated monomers, said photo-crosslinkable copolymers having a molecular weight of 10**3 to 10**7 and containing in the side groups of the polymer chain at least 2 maleimide groups of the formula I see diagramm : EP0079307,P10,F1 wherein each of R1 and R2 is methyl or R1 and R2 , together with the carbon atom to which they are attached, form a 5-or 6-membered carboyclic ring which may be substituted by methyl, and with at least 10% by weight of said monomers, based on the total amount of the comonomers use for obtaining the copolymers, containing acid and/or basic groups, for the preparation of a semipermeable membrane. |
