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    METHOD FOR PRODUCING POLYSILANE-POLYCARBOSILANE HAVING REDUCED CARBON CONTENT AND FIBERS PRODUCED THEREFROM
    3.
    发明申请
    METHOD FOR PRODUCING POLYSILANE-POLYCARBOSILANE HAVING REDUCED CARBON CONTENT AND FIBERS PRODUCED THEREFROM 审中-公开

    公开(公告)号：US20130011675A1

    公开(公告)日：2013-01-10

    申请号：US13512547

    申请日：2010-11-22

    申请人： Juergen Clade ,  Arne Ruedinger ,  Dieter Sporn

    发明人： Juergen Clade ,  Arne Ruedinger ,  Dieter Sporn

    IPC分类号： C08L83/08 ,  B29B9/12 ,  C01B31/36

    CPC分类号： C08L83/08 ,  C01B32/956 ,  C01B33/00 ,  C01B33/04 ,  C04B35/571 ,  C04B35/62281 ,  C04B2235/3826 ,  C04B2235/3843 ,  C04B2235/3891 ,  C04B2235/428 ,  C04B2235/5264 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/723 ,  C04B2235/724 ,  C04B2235/96 ,  C08G77/50 ,  C08G77/54 ,  C08G77/60 ,  Y10T428/2918

    摘要： The invention relates to a method for producing a polysilane-polycarbosilane copolymer solution from which a ceramic material having a ratio of silicon to carbon in the range of 0.8:1.0 to 1.1:1.0 can be obtained after removal of the solvent and pyrolysis, comprising the following steps: generating a chloric raw polysilane/oligosilane containing hydrocarbon groups by means of disproportioning a methylchlorodisilane or a mixture of a plurality of methylchlorodisilanes of the composition Si2MenCl6-n, where n=1-4, wherein the disproportioning takes place by means of a Lewis base as a catalyst, thermally post-cross-linking the raw polysilane/oligosilane into a non-melting polysilane-polycarbosilane copolymer that is soluble in a neutral solvent, and producing said solution by means of dissolving the polysilane-polycarbosilane in a neutral solvent. The invention is characterized in that additional elementary silicon or titanium disilicide is added in one step of said method in a suitable quantity as a powder or in the form of a compound comprising alkyl groups bonded to silicon or to nitrogen, wherein said additive either (a) takes place in that the raw polysilane/oligosilane is generated in the presence of a cross-linking agent, selected from compounds of the formula CI2R1Si—R2, having a boiling point above 100° C. and where R1 means chlorine, hydrogen, or an alkyl radical having 1 to 4 carbon atoms, and R2 is —SiR33, —NH—SiR3, or —N(SiR3)2, where —R3 has the same meaning as R1, or (b) takes place in that powdered silicon or titanium silicide is added to the polysilane-polycarbosilane solution. Green fibers or material in other forms can be produced from the copolymer solution, and can in turn be converted into ceramic silicon carbide materials. Said material can also be used for constructing ceramic matrices.

    Polysilane-polycarbosilanes with reduced chlorine content based on methylchloropolysilanes, and spinning dopes and ceramic moldings produced therefrom
    9.
    发明授权
    Polysilane-polycarbosilanes with reduced chlorine content based on methylchloropolysilanes, and spinning dopes and ceramic moldings produced therefrom 有权
    基于甲基氯聚硅烷，具有降低的氯含量的聚硅烷 - 聚碳硅烷，以及由其制备的纺丝剂和陶瓷模制品

    公开(公告)号：US08466076B2

    公开(公告)日：2013-06-18

    申请号：US13140677

    申请日：2009-12-21

    申请人： Arne Ruedinger ,  Juergen Clade ,  Heiko Spaniol ,  Dieter Sporn

    发明人： Arne Ruedinger ,  Juergen Clade ,  Heiko Spaniol ,  Dieter Sporn

    IPC分类号： C04B35/71 ,  C04B35/80 ,  C04B35/565

    CPC分类号： C08G77/60 ,  C04B35/62281 ,  C04B2235/483 ,  C04B2235/5264 ,  C04B2235/652 ,  C04B2235/6562 ,  C04B2235/723 ,  C04B2235/724 ,  C04B2235/96 ,  C08L83/16 ,  D01F9/10 ,  Y10T428/2913

    摘要： The present invention pertains to a process for producing unmeltable polysilane-polycarbosilane copolymers which are soluble in inert solvents, comprising the steps providing the product of a disproportionation of a methylchlorodisilane or a mixture of several methylchlorodisilanes of the composition Si2MenCl6-n, wherein n=1−4, wherein the disproportionation was carried out with a Lewis base as a catalyst, wherein this product is a chlorine-containing, crude polysilane/oligosilane containing hydrocarbon groups, and thermally postcrosslinking the crude polysilane/oligosilane to a polysilane-polycarbosilane copolymer, characterized in that the chlorine content of the polysilane-polycarbosilane copolymer is lowered by reacting the crude polysilane/oligosilane with a substitution agent, by which chlorine bound therein is replaced with a chlorine-free substituent. Green fibers and low-oxygen/oxygen-free ceramic fibers with a very low chlorine content can be produced using this process.

    摘要翻译： 本发明涉及可溶于惰性溶剂的不可凝胶聚硅烷 - 聚碳硅烷共聚物的制备方法，包括提供甲基氯二硅烷歧化产物或组合物Si2MenCl6-n的几种甲基氯代二硅烷的混合物的产物，其中n = 1 -4，其中所述歧化用路易斯碱作为催化剂进行，其中该产物是含氯烃的粗聚硅烷/含有烃基的聚硅烷，并将粗聚硅烷/低聚硅烷热交联至聚硅烷 - 聚碳硅烷共聚物，其特征在于 其中聚硅烷 - 聚碳硅烷共聚物的氯含量通过粗聚硅烷/低聚硅烷与取代试剂反应而被降低，由此将氯结合在其上的氯被无氯取代基取代。 可以使用该方法生产具有非常低氯含量的绿色纤维和低氧/无氧陶瓷纤维。