Polymeric hydridosilazanes and processes for their preparation, and their use

US5066623A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Thomas Gerdau · Eppstein, DE
• Hans-Jerg Kleiner · Kronberg, DE
• Marcellus Peuckert · Hofheim, DE
• Martin Bruck · Hofheim, DE
• Fritz Aldinger · Rodenbach, DE

Key dates

• Filing date: Mar 12, 1990
• Grant date: Nov 19, 1991
• Expiry date: Mar 12, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/62
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to novel polymeric hydridosilazanes, processes for their preparation and their use for the preparation of ceramic material containing silicon nitride. To prepare the polymeric hydridosilazanes, polymeric hydridochlorosilazanes are reacted with NH.sub.3. To prepare the ceramic material containing silicon nitride, the polymeric hydridosilazanes are then pyrolyzed.