Stabilization of organosiloxanes containing SiOC-bonded radicals

US5274154A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Michael Roth
• Gunter von Au · Burghausen, DE
• Christa Blumlhuber · Neuötting, DE
• Richard Weidner · Burghausen, DE
• Edgar Schmidt
• Christian Solbrig · Schweich, DE

Key dates

• Filing date: Jun 23, 1993
• Grant date: Dec 28, 1993
• Expiry date: Jun 23, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/38
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for stabilizing organosiloxanes containing SiOC-bonded radicals, by treating the organosiloxanes with compounds which scavenge hydroxyl groups, selected from (a) organic isocyanates, (b) compounds of the general formula EQU X.sub.m SiR.sub.n, (I) in which X represents a radical of the general formula EQU R.sup.1 COO-- (II) or a radical of the general formula EQU RR.sup.1 C.dbd.N--O-- (III) where R represents an optionally halogen-substituted C.sub.1 to C.sub.16 -hydrocarbon radical, R.sup.1 is the same as R or a hydrogen atom, m is 1, 2, 3 or 4, n is 0, 1, 2 or 3 and the sum of m+n=4, and mixtures thereof.