Aminoalkyl-substituted organopolysiloxane thiourea derivatives a

Details Aminoalkyl-substituted organopolysiloxane thiourea derivatives a Aminoalkyl-substituted organopolysiloxane thiourea derivatives a

1990-07-30

1991-10-29

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From heavy metal or aluminum reactant having at least one...

528 30, 528 39, 528 12, 528 21, 528 18, 528 23, C08G 7900

Patent

active

050617737

ABSTRACT:
Aminoalkyl-substituted organopolysiloxane thioureas are disclosed which consist of the units ##STR1## whereby R.sup.1 stands for a group ##STR2## R.sup.5 is an alkylene grouping, R.sup.2 is equal to R.sup.1 or H, R.sup.3 is equal to R.sup.1 or H or a group (CH.sub.2).sub.n --N(R.sup.6).sub.2 (III) (in which n=1-6, R.sup.6 =H or an alkyl group with C.sub.1 -C.sub.5) and R.sup.4 =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.

REFERENCES:
patent: 3362978 (1968-01-01), Kanner
patent: 3878168 (1975-04-01), Schank
patent: 4851492 (1989-07-01), Panster et al.
patent: 4954599 (1990-09-01), Panster et al.

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