发明名称 |
Polysilazanes and related compositions, processes and uses |
摘要 |
Silazanes and related compounds are prepared by providing a precursor containing one or more cyclic silazane units, causing polymerization to occur in the presence of a transition metal catalyst to form a polysilazane product. Further products may result from additional reaction. The novel compounds may be pyrolyzed to yield ceramic materials such as silicon nitride, silicon carbide and mixtures thereof. In a preferred embodiment, substantially pure silicon nitride and articles prepared therefrom are provided. Fibers, coatings, binders and the like may be prepared from the novel materials.
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申请公布号 |
US4952715(A) |
申请公布日期 |
1990.08.28 |
申请号 |
US19880176824 |
申请日期 |
1988.04.04 |
申请人 |
SRI INTERNATIONAL |
发明人 |
BLUM, YIGAL D.;CRAWFORD, EDWARD J. |
分类号 |
C04B35/16;C04B35/185;C04B35/571;C04B41/45;C07F7/10;C07F7/21;C08G77/38;C08G77/398;C08G77/54;C08G77/62;C08G79/00 |
主分类号 |
C04B35/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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