Aminoalkyl-substituted organopolysiloxane thiourea derivatives and methods of preparation and use thereof

摘要

Aminoalkyl-substituted organopolysiloxane thioureas are disclosed which consist of the units <IMAGE> (I) whereby R1 stands for a group <IMAGE> (II) R5 is an alkylene grouping, R2 is equal to R1 or H, R3 is equal to R1 or H or a group (CH2)n-N(R6)2 (III) (in which n=1-6, R6=H or an alkyl group with C1-C5) and R4=H or a group of the formula (III), whereby (I) contains at most 2 (III) groups and at most 2 (III) groups and the free valances of the oxygen atoms sitting on the silicon atom are saturated by silicon atoms of other (III) groups, optionally with the insertion of cross-linking agents containing Si, Ti or Zr. The compounds can be random copolycondensates, block copolycondensates or mixed copolycondensates in relation to the optionally present cross-linking agents. In addition, various methods of preparing the compounds are indicated. The compounds can be used especially for the removal of dissolved metals from aqueous or organic phases.