利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

57 条记录 (耗时 0.03 秒)

    Preparation of boron/nitrogen preceramic polymers
    1.
    发明授权
    Preparation of boron/nitrogen preceramic polymers 失效
    硼/氮前陶瓷聚合物的制备

    公开(公告)号：US5015607A

    公开(公告)日：1991-05-14

    申请号：US332076

    申请日：1989-04-03

    申请人： Pierre Ardaud ,  Jean-Jacques LeBrun ,  Gerard Mignani

    发明人： Pierre Ardaud ,  Jean-Jacques LeBrun ,  Gerard Mignani

    IPC分类号： C04B35/583 ,  C04B35/622 ,  C08G79/00 ,  C08G79/08 ,  D01F9/10

    CPC分类号： C04B35/62227 ,  C04B35/583 ,  C08G79/08

    摘要： Boron/nitrogen preceramic polymers are prepared by reacting (a) the product of mass thermolysis of a compound of Formula (1): ##STR1## in which A is a halogen atom and R is a hydrogen atom, a hydrocarbon radical, or an organosilyl or hydrogenoorganosilyl radical, with (b) an amino compound containing at least one --NH.sub.2 group; the resulting polymers are facilely pyrolyzed into boron nitride ceramic materials.

    摘要翻译： 通过使（a）式（1）的化合物：其中A是卤素原子，R是氢原子的烃基，烃基，式（1）的化合物的质量热分解产物： 或有机甲硅烷基或氢有机甲硅烷基，与（b）含有至少一个-NH 2基团的氨基化合物; 所得聚合物易于热解成氮化硼陶瓷材料。

    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom
    2.
    发明授权
    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom 失效
    BORON / NITROGEN PRECERAMIC POLYMERS和BORON NITRIDE CERAMIC MATERIALS PRODUCER THEREFROM

    公开(公告)号：US5118774A

    公开(公告)日：1992-06-02

    申请号：US643692

    申请日：1991-01-22

    申请人： Gerard Mignani ,  Jean-Jacques Lebrun

    发明人： Gerard Mignani ,  Jean-Jacques Lebrun

    IPC分类号： C04B35/583 ,  C04B35/622 ,  C08G79/00 ,  C08G79/08 ,  D01F9/10

    CPC分类号： C08G79/08 ,  C04B35/583 ,  C04B35/62227

    摘要： Crosslinked random boron/nitrogen preceramic polymers are prepared by reacting (a) admixture of a trihalogenoborane A and a cyclic boron/nitrogen compound B containing recurring structural units of the following general formula (1): ##STR1## in which A is a halogen atom and R is a hydrogen atom, or a hydrocarbyl, organosilyl or hydrogenoorganosilyl radical, with (b) an amino compound C containing at least one --NH.sub.2 group; the resulting polymers are facilely pyrolyzed into boron nitride ceramic materials.

    摘要翻译： 通过使（a）三卤代硼烷A和含有以下通式（1）的重复结构单元的环状硼/氮化合物B反应制备交联的无规硼/氮前陶瓷聚合物：其中A是 卤素原子，R为氢原子，或烃基，有机甲硅烷基或氢有机甲硅烷基，（b）含有至少一个-NH 2基团的氨基化合物C; 所得聚合物易于热解成氮化硼陶瓷材料。

    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom
    7.
    发明授权
    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom 失效
    BORON / NITROGEN PRECERAMIC POLYMERS和BORON NITRIDE CERAMIC MATERIALS PRODUCER THEREFROM

    公开(公告)号：US5071935A

    公开(公告)日：1991-12-10

    申请号：US418193

    申请日：1989-10-06

    申请人： Pierre Ardaud ,  Gerard Mignani

    发明人： Pierre Ardaud ,  Gerard Mignani

    IPC分类号： C04B35/583 ,  C01B21/064 ,  C08G79/00 ,  C08G79/08 ,  D01F9/10

    CPC分类号： C08G79/08

    摘要： Organometallic boron/nitrogen polymers, precursors of boron nitride, include recurring structural units of the formulae (I) and (II): ##STR1## wherein X is N-R.sup.3, Y is NR.sup.1 R.sup.2 and Z is N-R, in which R, R.sup.1, R.sup.2 and R.sup.3, which may be identical or different, are each a hydrogen atom, an optionally substituted hydrocarbon radical, or an organosilyl or hydrogenoorganosilyl radical and are prepared by reacting (a) at least one cyclic compound (compound A) containing recurring structural units of the formula (1): ##STR2## wherein A is a halogen atom and R is a hydrogen atom, an optionally substituted hydrocarbon radical, or an organosilyl or hydrogenoorganosilyl radical, with (b) at least one compound including at least one boron atom to which two halogen atoms are directly bonded (compound B), and (c) at least one compound containing at least one NH.sub.2 group compound C); the resulting organometallic polymers are facilely pyrolyzed into boron nitride ceramic materials.

    摘要翻译： 有机金属硼/氮聚合物，氮化硼的前体包括式（I）和（II）的重复结构单元：其中X是N-R 3，Y是NR 1 R 2，和 Z是NR，其中R，R 1，R 2和R 3可以相同或不同，各自为氢原子，任选取代的烃基或有机甲硅烷基或氢有机甲硅烷基，并且通过使（a）至少一种 含有式（1）的重复结构单元的环状化合物（化合物A）：其中A是卤素原子，R是氢原子，任选取代的烃基或有机甲硅烷基或氢有机甲硅烷基，其中 （b）至少一种包含至少一个与两个卤原子直接键合的硼原子的化合物（化合物B），和（c）至少一种含有至少一个NH 2基团化合物C）的化合物; 所得到的有机金属聚合物易于热解成氮化硼陶瓷材料。

    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom
    8.
    发明授权
    Boron/nitrogen preceramic polymers and boron nitride ceramic materials produced therefrom 失效
    BORON / NITROGEN PRECERAMIC POLYMERS和BORON NITRIDE CERAMIC MATERIALS PRODUCER THEREFROM

    公开(公告)号：US5162558A

    公开(公告)日：1992-11-10

    申请号：US418173

    申请日：1989-10-06

    申请人： Pierre Ardaud ,  Maurice Charpenel ,  Gerard Mignani

    发明人： Pierre Ardaud ,  Maurice Charpenel ,  Gerard Mignani

    IPC分类号： C01B21/064 ,  C04B35/583 ,  C08G79/00 ,  C08G79/08 ,  D01F9/10

    CPC分类号： C04B35/583 ,  C01B21/064 ,  C08G79/08

    摘要： Organometallic boron/nitrogen polymers, precursors of boron nitride, are prepared by reacting at least one trihalogenoborane with at least one silazane compound containing at least one .tbd.Si--NH--Si.tbd. group, by gradually introducing the silazane compound into the trihalogenoborane, while maintaining the reaction medium at a temperature ranging from -100.degree. to 0.degree. C. and wherein the ratio of the gram equivalents of the .tbd.Si--NH--Si.tbd. groups of the silazane to the number of moles of trihalogenoborane is greater than 1; the resulting organometallic polymers are facilely pyrolyzed into boron nitride ceramic materials.

    摘要翻译： 有机金属硼/氮聚合物，氮化硼的前体是通过使至少一种三卤代硼烷与至少一种含有至少一个3-Si-NH-Si 3BOND基团的硅氮烷化合物，通过将硅氮烷化合物逐渐引入三卤代硼烷中，同时保持 所述反应介质在-100℃至0℃的温度范围内，并且其中所述硅氮烷的所述3BOND Si-NH-Si 3BOND基团的克当量与所述三卤代硼烷的摩尔数之比大于1; 所得到的有机金属聚合物易于热解成氮化硼陶瓷材料。

    Low carbon/high purity boron nitride
    10.
    发明授权
    Low carbon/high purity boron nitride 失效
    低碳/高纯度氮化硼

    公开(公告)号：US5021371A

    公开(公告)日：1991-06-04

    申请号：US482073

    申请日：1990-02-20

    申请人： Gerard Mignani ,  Pierre Ardaud ,  Roger Trichon

    发明人： Gerard Mignani ,  Pierre Ardaud ,  Roger Trichon

    IPC分类号： C01B21/064 ,  C04B35/583 ,  C08G79/08 ,  D01F9/10

    CPC分类号： C08G79/08 ,  C01B21/064 ,  C01B21/0646 ,  C04B35/583

    摘要： Highly pure boron nitride ceramic material, devoid of silicon values and having low carbon content, is prepared by pyrolyzing, under an atmosphere of ammonia, the product of the reaction between (i) at least one B-trihalogeno-borazole having the formula: ##STR1## and (ii) at least one primary amine having the formula:H.sub.2 N--Rin which formulae X is a halogen atom and R is an optionally substituted hydrocarbon radical having from 1 to 6 carbon atoms.

    摘要翻译： 通过在氨气氛下热解（i）至少一种具有下列结构式的β-三卤代 - 硼唑之间的反应产物，制备无纯硅含量低的碳氮化硼陶瓷材料： 和（ii）至少一种具有下式的伯胺：其中式X是卤素原子，R是具有1至6个碳原子的任选取代的烃基。