发明申请
- 专利标题： Polysilane-Polycarbosilane Copolymer Solutions and Oxygen-Depleted Ceramic Moulded Bodies Prepared Therefrom with Compositions Similar to that of Sic
- 专利标题（中）： 聚硅烷 - 聚碳硅烷共聚物溶液和氧消耗陶瓷成型
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申请号： US11579278申请日： 2005-05-02
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公开(公告)号： US20080207430A1公开(公告)日： 2008-08-28
- 发明人: Jurgen Clade , Erich Seider , Dieter Sporn , Erika Brendler , Thomas Lange , Gerhard Roewer , Dorit Meinhold
- 申请人： Jurgen Clade , Erich Seider , Dieter Sporn , Erika Brendler , Thomas Lange , Gerhard Roewer , Dorit Meinhold
- 优先权： DE102004021666.5 20040503; DE102004042531.0 20040902
- 国际申请： PCT/EP2005/004754 WO 20050502
- 主分类号： C08G77/60
- IPC分类号： C08G77/60 ; C04B35/80 ; C04B35/571
摘要：
The present invention pertains to a method for producing a polysilane-polycarbosilane copolymer solution, which comprises the preparation of a polysilane, obtained by the disproportionation of a methylchlorodisilane or a mixture of methylchlorodisilanes of the formula Si2MenCl6-n with a Lewis base as the catalyst, a subsequent thermal crosslinking of the polysilane to form an infusible polysilane-polycarbosilane copolymer that is soluble in inert solvents, as well as the production of said solution by the dissolution of the polysilane-polycarbosilane copolymer in an inert solvent. In addition, the present invention also pertains to a method for producing oxygen-depleted ceramic fibers and other molded bodies having a composition similar to that of SiC. The method for producing the fibers comprises the preparation of a polysilane-polycarbosilane copolymer solution, the spinning of this solution to obtain green fibers according to the dry spinning method, as well as the pyrolysis of the dried green fibers under an inert gas atmosphere or a reducing atmosphere.
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