CATIONIC ADSORBENT, PROCESS FOR ITS PREPARATION AND ITS USE IN REMOVING ANIONIC PRODUCTS FROM AQUEOUS SOLUTIONS

摘要

A cationic adsorption agent which is obtained by reaction of (a) an amino compound which contains at least one amino group and at least one free or methylolated carbamide or thiocarbamide group, or a salt thereof, with (b) an aminoplast precondensate which does not contain amino groups. The novel absorption agent is suitable in particular for removing anionic substances, such as acid dyes or reactive dyes, from aqueous solutions, especially from wastewaters.