Hydridosiloxanes as precursors to ceramic products

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

1992-04-17

1993-09-21

Shaver, Paul F.

Coating processes

With post-treatment of coating or coating material

Heating or drying

501 88, 501 97, 556410, 556412, 427228, 4273977, 4273831, 4273837, 427113, 427162, 427199, 427 58, 4271261, 4271262, 4271263, 4271265, 4271266, B05D 302

Patent

active

052467384

ABSTRACT:
A method is provided for preparing preceramic polymers and 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 pyrolyzed 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.

REFERENCES:
patent: 4482669 (1984-11-01), Seyferth et al.
patent: 4482689 (1984-11-01), Haluska et al.
patent: 4659850 (1987-04-01), Arai et al.
patent: 4720532 (1988-01-01), Seyferth et al.
patent: 4767876 (1988-08-01), Seyferth et al.

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