Polymeric hydridosilazanes and processes for their preparation and their use

US4931513A · 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: Sep 22, 1988
• Grant date: Jun 5, 1990
• Expiry date: Sep 22, 2008

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.