发明授权
US5145917A Boron/nitrogen/silicon preceramic polymers and boron nitride ceramic
materials produced therefrom
失效
BORON / NITROGEN / SILICON PRECERAMIC POLYMERS和BORON NITRIDE CERAMIC MATERIALS PRODUCER THEREFROM
- 专利标题： Boron/nitrogen/silicon preceramic polymers and boron nitride ceramic materials produced therefrom
- 专利标题（中）： BORON / NITROGEN / SILICON PRECERAMIC POLYMERS和BORON NITRIDE CERAMIC MATERIALS PRODUCER THEREFROM
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申请号： US565455申请日： 1990-08-10
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公开(公告)号： US5145917A公开(公告)日： 1992-09-08
- 发明人: Pierre Ardaud , Gerard Mignani
- 申请人： Pierre Ardaud , Gerard Mignani
- 申请人地址： FRX Courbevoie
- 专利权人： Rhone-Poulenc Chimie
- 当前专利权人： Rhone-Poulenc Chimie
- 当前专利权人地址： FRX Courbevoie
- 优先权： FRX8910939 19890810
- 主分类号： C04B35/583
- IPC分类号： C04B35/583 ; C08G79/00 ; C08G79/08 ; D01F9/10
摘要：
Boron/nitrogen/silicon preceramic polymers are prepared by copolymerizing at least one trihaloborane with at least one disilazane and at least one B-trichloroborazine; the resulting polymers, advantageously in fibrous form, are then facilely crosslinked and pyrolyzed into boron nitride ceramic materials.
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