Organosilicon compounds having urea groups, method for producing same and their utilization

US6218498A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Stefan Oberneder · Burghausen, DE
• Wolfgang Hechtl · Burghausen, DE
• Erich Pilzweger · Julbach, DE
• Doris Filusch · Burghausen, DE
• Michael Stepp · Braunau am Inn, AT

Key dates

• Filing date: May 24, 1999
• Grant date: Apr 17, 2001
• Expiry date: May 24, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5455
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to organosilicon compounds with at least three silicon atoms, consisting of units of the formula (I) R.sub.a Si(NR.sup.1 C.dbd.ONR.sup.2.sub.2).sub.k (NR.sup.3 C.dbd.ONR.sup.4).sub.t/2 Y.sub.m O.sub.n/2 [(CR.sup.5.sub.2).sub.s ].sub.r/2, where Y represents units of the formula (II) --SiR.sup.6.sub.3-p-q (NR.sup.1 C.dbd.ONR.sup.2.sub.2).sub.p (NR.sup.3 C.dbd.ONR.sup.4).sub.q/2, where R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently of each other can be either identical or different and represent a hydrogen atom or possibly substituted monovalent hydrocarbon radicals with between 1 and 20 carbon atoms; and where a, k, t, n, m, r, s, p and q have the meaning assigned to them in claim 1, under the provision that the sum of p+q is .ltoreq.3, the sum of a+k+l+m+n+r equals 4, the sum of m+r equals 0 or 1, and the organosilicon compound of the invention contains at least one unit of formula (I) where t is not equal to 0.