Patent · US Expired

Polymeric hydridosilazanes, processes for the preparation thereof, silicon nitride-containing ceramic materials which can be prepared therefrom, and the preparation thereof

US5081080A · kind A · utility

0Cited by

0References

8Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Tilo Vaahs · Kelkheim, DE
Thomas Gerdau · Eppstein, DE
Marcellus Peuckert · Hofheim, DE
Martin Bruck · Hofheim, DE

Key dates

Filing date	Apr 20, 1990
Grant date	Jan 14, 1992
Priority date	—
Expiry date	Apr 20, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B35/589
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to novel polymeric hydridosilazanes, their preparation, their conversion into silicon nitride-containing ceramic material, and this material itself. To prepare the polymeric hydridosilazanes, polymeric hydridothiosilazanes are reacted with NH.sub.3. To prepare the silicon nitride-containing ceramic material, the polymeric hydridosilazanes are then pyrolyzed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.