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1. 发明授权

US4719273A Method for forming new preceramic polymers containing silicon 失效
标题翻译：形成含有硅的新的陶瓷前体聚合物的方法
公开(公告)号：US4719273A
公开(公告)日：1988-01-12
申请号：US843139
申请日：1986-03-24
申请人： Dietmar Seyferth , Yuan-Fu Yu , Gudrun E. Koppetsch
发明人： Dietmar Seyferth , Yuan-Fu Yu , Gudrun E. Koppetsch
IPC分类号： C08G77/60 , C08L83/16 , G03F7/075 , C08G77/06
CPC分类号： C08G77/60 , C08L83/16 , G03F7/0757
摘要： A method of forming preceramic polymers by mixing (A) an organic polysilane, preferably either a methylpolysilane of the formula [(RSiH).sub.x (RSi).sub.y ].sub.n, (where R is a lower alkyl group having from 1 to about 6 carbon atoms, a cycloalkyl group having from 3 to about 6 carbon atoms, a substituted or unsubstituted lower aryl group having from 6 to about 10 carbon atoms, a tri(lower)alkyl- or di(lower)alkylsilyl group x+y=1, (x and y are each >0 and also x=1, y=0), and n is an integer greater than 1) or a polycarbosilane having repeat units of the formula [R.sup.a Si(H)--(CH.sub.2).sub.q ], [R.sup.a Si(H)--CH.dbd.CH], and [R.sup.a Si(H)--C.tbd.C] (where R.sup.a is H, a lower alkyl group having from 1 to about 6 carbon atoms, a cycloalkyl group having from 3 to about 6 carbon atoms, a substituted or unsubstituted lower aryl group having from 6 to about 10 carbon atoms, q is an integer 1 or greater), with (B) an organic or organisilicon compound having at least two alkenyl groups and allowing the mixture to react is disclosed. Preferably, the alkenyl group is a vinyl group. The reaction is preferably initiated by the generation of reactive free radicals. Novel preceramic polymers formed by this method are also disclosed.
摘要翻译：通过混合（A）有机聚硅烷，优选式[（RSiH）x（RSi）y] n）的甲基聚硅烷（其中R是具有1至约6个碳原子的低级烷基）形成陶瓷前体聚合物的方法，具有3至约6个碳原子的环烷基，取代或未取代的具有6至约10个碳原子的低级芳基，三（低级）烷基或二（低级）烷基甲硅烷基x + y = 1（ x和y各自> 0且x = 1，y = 0），n是大于1的整数）或具有式[RaSi（H） - （CH 2）q]，[R a Si （H）-CH = CH]和[RaSi（H）-C 3BOND C]（其中Ra为H，具有1至约6个碳原子的低级烷基，具有3至约6个碳原子的环烷基，具有6至约10个碳原子的取代或未取代的低级芳基，q为1以上的整数），（B）具有至少两个烯基并且允许混合物反应的有机或有机硅化合物。优选地，烯基是乙烯基。反应优选通过产生反应性自由基来引发。还公开了通过该方法形成的新型前陶瓷聚合物。

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