DE3837415

• Main Authors: PANSTER, PETER., 6458 RODENBACH, DE, DESCHLER, ULRICH., 6450 HANAU, DE
• Format: Patent
• Language: English
• Published: 30.08.1990
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention is relative to optionally cross-linked organopolysiloxane urea derivatives and thiourea derivatives consisting of: (1) wherein X stands for 0 or S and R1 is a group of the formula: (2) in which R5 is alkylene with 1 to 10 C atoms or cycloalkylene with 5 to 8 C atoms or a group of the formula: +TR with n=1-6 (on the nitrogen) m=0-6 (on the silicon), wherein R2 has the same meaning as R1 or stands for H, R3 and R4 have the same meaning as R1 or stands for H or alkyl with 1 to 5 C atoms. At least two but at the most three groups according to formula (2) are bound to the units according to formula (1). The free valances of the oxygen atoms bound to the silicon atom are saturated by silicon atoms of further groups of formula (2) with the optional inclusion of cross-linking agents. In addition, preparative methods for the products and a use for the removal of dissolved metals from liquid phases are indicated.