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17 条记录 (耗时 0.022 秒)

    Sinterable ceramic powder, process for its preparation, silicon nitride ceramic manufactured therefrom, process for its manufacture and its use
    2.
    发明授权
    Sinterable ceramic powder, process for its preparation, silicon nitride ceramic manufactured therefrom, process for its manufacture and its use 失效
    可烧结陶瓷粉末，其制备方法，其制造的硅酸盐陶瓷，其制造方法及其用途

    公开(公告)号：US5081078A

    公开(公告)日：1992-01-14

    申请号：US443881

    申请日：1989-11-30

    申请人： Marcellus Peuckert ,  Martin Bruck ,  Thomas Gerdau ,  Hans-Jerg Kleiner ,  Tilo Vaahs ,  Fritz Aldinger

    发明人： Marcellus Peuckert ,  Martin Bruck ,  Thomas Gerdau ,  Hans-Jerg Kleiner ,  Tilo Vaahs ,  Fritz Aldinger

    IPC分类号： C01B21/068 ,  C04B35/589 ,  C04B35/593 ,  C08G77/48 ,  C08G77/62

    CPC分类号： C04B35/589 ,  C04B35/5935

    摘要： The invention relates to a novel sinterable ceramic powder, to its preparation, to its processing to form silicon nitride ceramic and to said material itself and its use. The sinterable ceramic powder is prepared by dissolving the polysilazane of formula (I)[CH.sub.3 SiHNH].sub.n [CH.sub.3 SiN].sub.nwhere n is about 10 to 12, in an organic solvent, suspending a pulverulent sinter aid in this solution and then evaporating the solvent and pyrolyzing the residue in an inert gas atmosphere at 500.degree. to 1600.degree. C.The resulting ceramic powder can be used to form a shaped article and then to manufacture silicon nitride ceramic by sintering. It is also possible, however, to form a shaped article from the as yet unpyrolyzed residue obtained after evaporation of the solvent, and then to pyrolyze and sinter said article.The ceramic obtained can be used to manufacture components subject to high mechanical, thermal and corrosive stress.

    摘要翻译： 本发明涉及一种新型的可烧结陶瓷粉末，用于其制备，以形成氮化硅陶瓷的加工以及所述材料本身及其用途。 可烧结陶瓷粉末是通过在有机溶剂中溶解式（I）[CH3SiHNH] n [CH3SiN] n的聚硅氮烷[N，N-二甲基甲酰胺] n [CH3SiN] n，其中n为约10〜12，将粉状烧结助剂悬浮在该溶液中，然后蒸发溶剂， 在惰性气体气氛中在500〜1600℃下热解残渣。得到的陶瓷粉末可用于形成成形制品，然后通过烧结制造氮化硅陶瓷。 然而，也可以从蒸发溶剂后获得的仍然未裂解的残余物形成成型制品，然后热解并烧结所述制品。 获得的陶瓷可用于制造受到高机械，热和腐蚀应力的部件。

    Polymeric hydridochlorosilazanes, process for their preparation, ceramic materials containing silicon nitride which can be manufactured therefrom, and their manufacture
    3.
    发明授权
    Polymeric hydridochlorosilazanes, process for their preparation, ceramic materials containing silicon nitride which can be manufactured therefrom, and their manufacture 失效
    聚合氢氯硅氮烷，其制备方法，可由其制造的含氮化硅的陶瓷材料及其制造方法

    公开(公告)号：US5189132A

    公开(公告)日：1993-02-23

    申请号：US759035

    申请日：1991-09-05

    申请人： Tilo Vaahs ,  Thomas Gerdau ,  Hans-Jerg Kleiner ,  Marcellus Peuckert ,  Martin Bruck

    发明人： Tilo Vaahs ,  Thomas Gerdau ,  Hans-Jerg Kleiner ,  Marcellus Peuckert ,  Martin Bruck

    IPC分类号： C04B35/589 ,  C08G77/62

    CPC分类号： C04B35/589 ,  C08G77/62

    摘要： The invention relates to novel polymeric hydridochlorosilazanes, to their preparation, to their processing to form ceramic materials containing silicon nitride, and to said materials themselves. The polymeric hydridochlorosilazanes are prepared by reacting oligohydridoorganosilazanes of the general formula (R.sup.1 SiHNH).sub.n, in which n is about 3 to about 12, with at least one of the chlorosilanes R.sup.2 SiHCl.sub.2, R.sup.3 SiCl.sub.3, Cl.sub.2 R.sup.4 Si--CH.sub.2 CH.sub.2 --SiR.sup.4 Cl.sub.2 or Cl.sub.3 Si--CH.sub.2 CH.sub.2 --SiR.sup.5 Cl.sub.2 at 30.degree. C. to 300.degree. C., where the radicals independently of one another have the following meanings:R.sup.1 =a C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkenyl group,R.sup.2 =a C.sub.2 -C.sub.6 alkenyl group if R.sup.2 SiHCl.sub.2 is reacted with the oligosilazanes by itself, orR.sup.2 =a C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkenyl group if R.sup.2 SiHCl.sub.2 is reacted with the oligosilazanes as a mixture with other chlorosilanes, andR.sup.3, R.sup.4, R.sup.5 =a C.sub.1 -C.sub.6 alkyl or C.sub.C.sub.2 -C.sub.6 alkenyl group,and where R.sup.3 SiCl.sub.3 is used only as a mixture with at least one of the other chlorosilanes (containing R.sup.2, R.sup.4 or R.sup.5).The polymeric hydridochlorosilazanes according to the invention can be converted into polysilazanes by reaction with ammonia, and these in turn can be pyrolyzed to form ceramic materials containing silicon nitride.

    摘要翻译： 本发明涉及新型的聚合氯化二氯硅氮烷，用于其制备，以形成含有氮化硅的陶瓷材料的加工，以及所述材料本身。 通过使通式（R1SiHNH）n的低聚氢化有机硅氮烷（其中n为约3至约12）与至少一种氯代硅烷R 2 SiHCl 2，R 3 SiCl 3，Cl 2 R 4 Si-CH 2 CH 2 -SiR 4 Cl 2或Cl 3 Si-CH 2 CH 2 -SiR 5 Cl 2中的至少一种反应来制备聚合的氢氯硅氮烷， 30℃至300℃，其中彼此独立的基团具有以下含义：R 1 = C 1 -C 6烷基或C 2 -C 6烯基，如果R 2 SiHCl 2与C 2 -C 6烯基反应，则R 2 = C 2 -C 6烯基 如果R2SiHCl2与低聚硅氮烷作为与其它氯硅烷的混合物反应，则R2 = C1-C6烷基或C2-C6烯基，R3，R4，R5 = C1-C6烷基或CC2-C6烯基 ，并且其中R 3 SiCl 3仅与至少一种其它氯硅烷（包含R 2，R 4或R 5）一起使用。 根据本发明的聚合物氯化硅烷可以通过与氨的反应转化为聚硅氮烷，并且这些可以热解而形成含有氮化硅的陶瓷材料。

    Ethylenically unsaturated phosphinic acid and thiophosphinic acid isocyanates and isothiocyanates, and a process for their preparation
    10.
    发明授权
    Ethylenically unsaturated phosphinic acid and thiophosphinic acid isocyanates and isothiocyanates, and a process for their preparation 失效
    烯键式不饱和次膦酸和硫代次膦酸异氰酸酯和异硫氰酸酯及其制备方法

    公开(公告)号：US4859795A

    公开(公告)日：1989-08-22

    申请号：US047102

    申请日：1987-05-08

    申请人： Thomas Gerdau ,  Hans-Jerg Kleiner ,  Georg Pawlowski

    发明人： Thomas Gerdau ,  Hans-Jerg Kleiner ,  Georg Pawlowski

    IPC分类号： C07F9/02 ,  C07F9/22 ,  C07F9/36 ,  C08F30/02

    CPC分类号： C07F9/36

    摘要： Compounds of the general formula ##STR1## wherein X and Y are the same or different and denote oxygen or sulfur,R.sub.1 is an ethylenically unsaturated aliphatic radical containing from 2 to 6 carbon atoms, andR.sub.2 is a saturated aliphatic radical containing from 1 to 6 carbon atoms or an aryl radical containing from 6 to 10 carbon atoms,are intermediate products used for the preparation of photocrosslinkable polymers with lateral (thio)phosphinyl(thio)urethane groups or (thio)phosphinyl(thio)urea groups, which polymers are useful in photosensitive mixtures and recording material.

    摘要翻译： 通式（I）的化合物，其中X和Y相同或不同，表示氧或硫，R 1是含有2-6个碳原子的烯属不饱和脂族基团，R 2是含有 1至6个碳原子或含有6至10个碳原子的芳基是用于制备具有侧面（硫代）氧膦基（硫代）氨基甲酸酯基或（硫代）氧膦基（硫））脲基的光可交联聚合物的中间产物，其中 聚合物可用于光敏混合物和记录材料。