ORGANOSILICON COMPOUNDS CONTAINING CARBAMIDE GROUPS, PREPARATION AND USE THEREOF Russian patent published in 2001 - IPC

FIELD: chemical industry. SUBSTANCE: described are organosilicon compounds having at least three silicon atoms consisting of units of formula I: wherein Y includes units of formula II: -SiR63

_-p-q(NR¹C=ONR22)_p(NR³C=ONR⁴)_q/2 (II), wherein R, R¹, R², R³, R⁵ and R⁶, independently from each other, are identical or different and are hydrogen atom or optionally substitution monovalent hydrocarbon residues having 1-20 carbon atoms, a is 0, 1,2 or 2, k is 0,1,2 or 3, t is 0,1,2,3 or 4, n is 0,1,2,3 or 4, m is 0 or 1, r is 0 or 1, s is integer of 1 to 20, p is 0,1,2 or 3 and q is 0,1,2 or 3 provided that sum of p+q is equal or more than 3, sum of a+k+t+m+n+r is 4, sum of m+r is 0 or 1, and organosilicon compound contains at least one unit of formula I when t is other than 0. Said compounds are useful for removing protonic compounds or groups and are especially useful for removing substances having OH groups. Also described is preparation and use of compounds of formula I. EFFECT: improved properties of the title compounds. 10 cl, 8 ex, 1 tbl