POLYSILAZANE, ITS PRODUCTION, SILICON NITRIDE-CONTAINING CERAMICS MATERIAL CAPABLE OF PRODUCED THEREFROM AND PRODUCTION THEREOF

摘要

The polysilazanes are prepared by reacting Si, Si'-diorganyl-N-alkyltetrachlorodisilazanes of the formula RSiCl2-NR'-SiCl2R with ammonia and can then be pyrolysed to give a silicon nitride-containing ceramic material. The polysilazanes are soluble in conventional aprotic solvents.