发明授权
US4689382A Process for the preparation of organopolysilazanes and of
organopoly(disilyl)silazanes with improved thermal behavior and use of
such silazanes as ceramic precursors
失效
用于制备有机聚硅氮烷和有机（二甲硅烷基）硅氮烷的方法，具有改进的热行为和使用这种硅氮烷作为陶瓷前体
- 专利标题： Process for the preparation of organopolysilazanes and of organopoly(disilyl)silazanes with improved thermal behavior and use of such silazanes as ceramic precursors
- 专利标题（中）： 用于制备有机聚硅氮烷和有机（二甲硅烷基）硅氮烷的方法，具有改进的热行为和使用这种硅氮烷作为陶瓷前体
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申请号： US832394申请日： 1986-02-24
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公开(公告)号： US4689382A公开(公告)日： 1987-08-25
- 发明人: Jean-Jacques Lebrun , Hugues Porte
- 申请人： Jean-Jacques Lebrun , Hugues Porte
- 申请人地址： FRX Courbevoie
- 专利权人： Rhone-Poulenc Specialites Chimiques
- 当前专利权人： Rhone-Poulenc Specialites Chimiques
- 当前专利权人地址： FRX Courbevoie
- 优先权： FRX8502805 19850227
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; C04B35/571 ; C04B35/589 ; C04B35/63 ; C08G77/00 ; C08G77/48 ; C08G77/62 ; D01F9/08 ; D01F9/10 ; C08G77/06
摘要：
The present invention relates to a process for the treatment of polysilazane in a homogeneous phase with a catalytically effective quantity of an acid catalyst selected from HClO.sub.4 and CF.sub.3 SO.sub.3 H. The polysilazane is preferably selected from the group consisting of organopolysilazane, organopoly(disilyl)silazane and mixtures thereof. The organic radicals bonded to the silicon atoms are preferably saturated or aromatic hydrocarbon radicals and the silicon atoms of the polysilazane are substantially free from any hydrogen atom bonded directly to the silicon atoms.The polysilazanes treated in this manner have good thermal behavior and, are particularly useful as precursors of ceramic products.
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