发明名称 |
Process for the preparation of boron nitride ceramics and their precursors from hydrazine derivatives and precursors so produced. |
摘要 |
<p>The subject of the invention is a process for the preparation of ceramics made from boron nitride and their precursors. These products are obtained by reaction of a lithium-containing derivative of hydrazine with a boron trihalide, followed by reacting the product obtained above with ammonia.</p> |
申请公布号 |
EP0521772(A1) |
申请公布日期 |
1993.01.07 |
申请号 |
EP19920401857 |
申请日期 |
1992.06.30 |
申请人 |
ELF ATOCHEM S.A. |
发明人 |
MAJORAL, JEAN-PIERRE;BRODIE, NANCY;CAMINADE, ANNE-MARIE |
分类号 |
C04B35/583;C07F7/10 |
主分类号 |
C04B35/583 |
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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