Silicon oxycarbonitride by pyrolysis of polycylosiloxanes in...

Details Silicon oxycarbonitride by pyrolysis of polycylosiloxanes in... Silicon oxycarbonitride by pyrolysis of polycylosiloxanes in...

C - Chemistry, Metallurgy

04

B

C04B 35/58 (2006.01) C03C 10/00 (2006.01) C03C 14/00 (2006.01) C04B 35/80 (2006.01) C04B 35/68 (1990.01)

Patent

CA 2133979

2133979 9324423 PCTABS00028 An improved fiber reinforced glass composite includes a refractory fiber in a matrix of a nitrogen-containing black glass ceramic having the empirical formula SiNzCxOy where x ranges from greater than zero up to about 2.0, preferably 0.1 to 1.0, y ranges from 0.5 up to about 3.0, preferably 0.7 to 1.8, and z ranges from above zero up to about 1.5, preferably 0.2 to 1Ø Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. The cyclosiloxane monomers are polymerized and then pyrolyzed in an ammonia-containing atmosphere to produce the nitrogen-containing black glass (silicon oxycarbonitride).

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