Hydridosiloxanes as precursors to ceramic products

Details Hydridosiloxanes as precursors to ceramic products Hydridosiloxanes as precursors to ceramic products

C - Chemistry, Metallurgy

08

G

261/1, 402/8

C08G 77/38 (2006.01) C04B 35/00 (2006.01)

Patent

CA 2028852

2028852 9012835 PCTABS00002 A method is provided for preparing preceramic polymers and silicious ceramic materials which derive therefrom. The preceramic polymers are polysiloxanes which are synthesized by catalytically activating Si-H bonds in a hydridosiloxane starting material and replacing the activated hydrogen atoms with non-hydrogen substituents. These preceramic polysiloxanes are pyrolyazed in a selected atmosphere to give the desired ceramic product. Ceramic products which may be prepared by this technique include silica, silicon oxynitride, silicon carbide, and metal silicates.

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