| abstract |
(a) monomeren Verbindung, weiche mindestens eine anionische Gruppe und mindestens eine gegebenenfalls methylolierte Amidgruppe, insbesondere Carbonsäureamidgruppe aufweist, mit einem (b) von salzbildenden anionischen Gruppen freien Aminoplast-Vorkondensat nhergestellt worden ist.An anionic adsorbent, which by reacting a (a) monomeric compound which has at least one anionic group and at least one optionally methylolated amide group, in particular carboxamide group, with a (b) Aminoplast precondensate free of salt-forming anionic groups has been manufactured.n n n The new adsorbent is particularly suitable for removing cationic substances, such as cationic dyes, and heavy metal ions from aqueous solutions, in particular from waste water. |