Organopolysilazane precursors to silicon nitride-rich mixed sic/se3n4

Abstract From the Canadian patent

A method for preparing preceramic polymers is disclosed. This method includes the steps of reacting in solution anhydrous ammonia with a mixture of R1SiHX2 (where R1 is a lower alkyl group having from 1 to about 6 carbon atoms a substituted or, unsubstituted cycloalkyl group having from 3 to about 6 carbon atoms, a substituted or unsubstituted lower alkenyl group having from 2 to about 6 carbon atoms, or a substituted or unsubtituted lower aryl group having from 6 to about 10 carbon atoms and, X is a halogen) and RSiX3 (where R is H a lower alkyl group, having from 1 to about 6 carbon atoms a substituted or, unsubstituted cycloalkyl group having from 3 to about 6 carbon atoms, a substituted …