Silicon compounds containing SiC-bonded biuret groups and a method for preparing the same

US4650835A · kind A · utility

Assignee

• Wacker-Chemic GmbH · DE

Inventors

• Herbert Eck · Burghausen, DE
• Hartmut Menzel · Munich, DE
• Reinhard Jira · Burghausen, DE
• Alfred Prasse · Burghausen, DE

Key dates

• Filing date: Feb 18, 1986
• Grant date: Mar 17, 1987
• Expiry date: Feb 18, 2006

Classification

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

Abstract

Organosilicon compounds containing SiC-bonded biuret groups are prepared by (I) adding a silane containing 1 or 2 silicon atoms per molecule and an SiC-bonded organic radical having at least one basic ##STR1## group and at least one SiOC-bonded aliphatic radical per molecule to a monoisocyanate or a diisocycanate at a temperature up to 125.degree. C. and (II) maintaining the temperature at 110.degree. C. to 125.degree. C. for at least two minutes. In an alternate procedure the silane and mono- or diisocyanate may be heated to a temperature in the range of from 110.degree. C. up to 200.degree. C. for at least two minutes, after or while adding additional monoisocyanate or diisocyanate. The resultant silicon compounds are used in the preparation of polyurethanes and as additives to lacquers.