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1. 发明授权

US4981666A Method for the preparation of silicon carbide whiskers 失效
标题翻译：碳化硅晶须的制备方法
公开(公告)号：US4981666A
公开(公告)日：1991-01-01
申请号：US931667
申请日：1986-11-17
申请人： Motoyuki Yamada , Minoru Takamizawa , Akira Hayashida , Nobuaki Urasato , Hiromi Ohsaki
发明人： Motoyuki Yamada , Minoru Takamizawa , Akira Hayashida , Nobuaki Urasato , Hiromi Ohsaki
IPC分类号： C30B29/62 , C30B25/00
CPC分类号： C30B25/005 , C30B29/36
摘要： In place of the conventional silicon source materials used in the prior art method for the preparation of silicon carbide whiskers, the inventive method utilizes a hydrolysis product of a chlorosilane compound R.sub.a SiCl.sub.4-a or a chlorodisilane compound R.sub.b Si.sub.2 Cl.sub.6-b, in which R is a hydrogen atom or a monovalent hydrocarbon group, a is zero to 3 and b is 1 to 5, as the silicon source which is intimately mixed with a powder of carbon and the mixture is heated at 1400.degree. to 1700.degree. C. to give silicon carbide whiskers in a high conversion. Alternatively, the hydrolysis of the chloro(di)silane compound is performed in an aqueous medium in which a powder of carbon is dispersed in advance so that the hydrolysis product as formed is already a mixture with the carbon powder.
摘要翻译：本发明方法代替用于制备碳化硅晶须的现有技术方法中使用的常规硅源材料，其利用氯硅烷化合物RaSiCl4-a或氯二硅烷化合物RbSi2Cl6-b的水解产物，其中R为氢原子或一价烃基，a为0〜3，b为1〜5，作为与碳粉充分混合的硅源，将混合物在1400〜1700℃下加热，得到碳化硅晶须在高转换。或者，氯（二）硅烷化合物的水解在预先分散有碳粉末的水性介质中进行，使得形成的水解产物已经是与碳粉末的混合物。

2. 发明授权

US5011639A Method for the preparation of a sintered body of silicon carbide 失效
标题翻译：制备碳化硅烧结体的方法
公开(公告)号：US5011639A
公开(公告)日：1991-04-30
申请号：US453038
申请日：1989-12-12
申请人： Nobuaki Urasato , Minoru Takamizawa , Akira Hayashida , Hiromi Ohsaki , Jiyunitirow Maruta
发明人： Nobuaki Urasato , Minoru Takamizawa , Akira Hayashida , Hiromi Ohsaki , Jiyunitirow Maruta
IPC分类号： C04B35/565 , C04B35/626 , H01L21/48
CPC分类号： H01L21/4807 , C04B35/565
摘要： A powdery mixture of a fine silicon carbide powder admixed with boron or a boron compound, e.g. boron carbide, titanium boride and boron oxide, as a sintering aid is compression-molded into a green body which is subjected to a sintering treatment into a sintered body. Different from conventional methods in which the sintering treatment is performed always in an atmosphere of an inert gas, e.g. argon, the sintering treatment in the inventive method is performed in an atmosphere of a rare gas containing 0.005-5% by volume of nitrogen. The sintered body of silicon carbide obtained by this method has an outstandingly high electric volume resistivity of 10.sup.10 to 10.sup.13 ohm.cm and a coefficient of thermal conductivity of 100-220 W/m.K.
摘要翻译：与硼或硼化合物混合的细碳化硅粉末的粉末混合物，例如作为烧结助剂的碳化硼，硼化钛和氧化硼被压缩成型坯，其经历烧结处理成烧结体。不同于常规方法，其中始终在惰性气体气氛中进行烧结处理，例如，氩气中，本发明方法中的烧结处理在含有0.005-5体积％氮气的稀有气体的气氛中进行。通过该方法获得的碳化硅烧结体具有极高的体积电阻率为1010至1013欧姆·厘米，导热系数为100-220W / m·K。

3. 发明授权

US4571331A Ultrafine powder of silicon carbide, a method for the preparation thereof and a sintered body therefrom 失效
标题翻译：超细碳化硅粉末，其制备方法和烧结体
公开(公告)号：US4571331A
公开(公告)日：1986-02-18
申请号：US560389
申请日：1983-12-12
申请人： Morinobu Endou , Minoru Takamizawa , Tatsuhiko Hongu , Taishi Kobayashi , Akira Hayashida , Nobuaki Urasato , Hiromi Ohsaki , Nichiro Suzuki , Takasi Toide
发明人： Morinobu Endou , Minoru Takamizawa , Tatsuhiko Hongu , Taishi Kobayashi , Akira Hayashida , Nobuaki Urasato , Hiromi Ohsaki , Nichiro Suzuki , Takasi Toide
IPC分类号： C01B31/36 , C04B35/565 , C04B35/575
CPC分类号： B82Y30/00 , C01B31/36 , C04B35/565 , C04B35/575 , C01P2002/72 , C01P2002/82 , C01P2004/62 , C01P2004/64 , C01P2006/40
摘要： The invention provides a method for the preparation of an ultrafine powder of silicon carbide having an extremely fine and uniform particle size distribution of spherical agglomerate particles each formed of crystallites of 5 nm or smaller in size. The silicon carbide powder is prepared by the vapor phase pyrolysis of a specified methyl hydrogen(poly)silane as diluted with a carrier gas, e.g. hydrogen, to give a concentration of 40% by volume or lower at a temperature of 750.degree. to 1600.degree. C. The silicon carbide powder can readily be sintered at a temperature of 1750.degree. to 2500.degree. C. even without addition of a sintering aid to give a sintered body of extremely high density reaching 80% or larger of the theoretical value which can never be obtained of the conventional silicon carbide powders.
摘要翻译：本发明提供一种制备碳化硅超细粉末的方法，其具有均匀的颗粒尺寸分布的球形聚集体颗粒，它们各自由5nm或更小的微晶形成。碳化硅粉末通过气相热分解制备，所述气相热分解用载气稀释的特定甲基氢（聚）硅烷。氢气，在750〜1600℃的温度下浓度为40体积％以下。碳化硅粉末可以容易地在1750〜2500℃的温度下烧结，即使不添加烧结助剂得到非常高密度的烧结体达到常规碳化硅粉末不可获得的理论值的80％以上。

4. 发明授权

US4762810A Method for the preparation of a sintered body of silicon carbide 失效
标题翻译：制备碳化硅烧结体的方法
公开(公告)号：US4762810A
公开(公告)日：1988-08-09
申请号：US17818
申请日：1987-02-24
申请人： Morinobu Endo , Minoru Takamizawa , Tatsuhiko Hongu , Akira Hayashida , Nobuaki Urasato , Hiromi Ohsaki
发明人： Morinobu Endo , Minoru Takamizawa , Tatsuhiko Hongu , Akira Hayashida , Nobuaki Urasato , Hiromi Ohsaki
IPC分类号： C04B35/565 , C04B35/571 , C04B35/56
CPC分类号： C04B35/571
摘要： Sintered bodies of silicon carbide having remarkably increased volume resistivity and thermal conductivity can be obtained by heating a green body shaped of a fine silicon carbide powder admixed with boron or a boron compound, e.g. boron carbide, titanium boride and boron oxide, as a sintering aid at 1800.degree. to 2200.degree. C. in the presence of or in the vicinity of a shaped body of a powdery mixture of a fine silicon carbide powder admixed with boron nitride in the same furnace. The improvements in the volume resistivity and thermal conductivity of the sintered body are particularly remarkable when the fine silicon carbide powder is a pyrolysis product of a methyl hydrogen silane compound such as tetramethyl disilane.
摘要翻译：可以通过加热与硼或硼化合物混合的细小碳化硅粉末的生坯体，例如通过加热形成具有显着增加的体积电阻率和导热性的碳化硅的烧结体。碳化硼，硼化钛和氧化硼作为烧结助剂，在1800-2200℃下，在与其相同的氮化硼混合的细碳化硅粉末的粉末混合物的成形体存在下或其附近炉。当细碳化硅粉末是甲基氢硅烷化合物如四甲基乙硅烷的热解产物时，烧结体的体积电阻率和热导率的改善是特别显着的。

5. 发明授权

US4948763A Preparation of hollow ceramic fibers 失效
标题翻译：中空陶瓷纤维的制备
公开(公告)号：US4948763A
公开(公告)日：1990-08-14
申请号：US404584
申请日：1989-09-08
申请人： Akira Hayashida , Minoru Takamizawa , Yoshihumi Takeda
发明人： Akira Hayashida , Minoru Takamizawa , Yoshihumi Takeda
IPC分类号： C04B20/00 , C04B35/571 , C04B35/589 , C08G77/62 , C08L83/16
CPC分类号： C04B20/0056 , C04B35/571 , C04B35/589 , C08G77/62 , C08L83/16
摘要： Hollow ceramic fibers are prepared by melt spinning an organic silazane polymer, infusibilizing the fiber to form an infusible layer on the surface, and pyrolyzing the fiber to obtain a ceramic fiber having an empty interior. The infusibilizing step includes two steps of treating the fiber with a gas containing the vapor of an infusibilizing silicon, boron, phosphorus or metal compound and further treating with a water vapor-containing gas or ammonia-containing gas. The surface infusible fibers are efficiently sintered into hollow ceramic fibers without fusion bond.
摘要翻译：中空陶瓷纤维通过熔融纺丝有机硅氮烷聚合物制备，使纤维不熔化以在表面上形成不熔层，并热解纤维以获得具有空的内部的陶瓷纤维。渗透步骤包括两个步骤：用含有不熔硅，硼，磷或金属化合物的蒸汽的气体处理纤维，并进一步用含水气体气体或含氨气体进行处理。将表面不熔纤维有效地烧结成中空陶瓷纤维而没有熔接。

6. 发明授权

US4847345A Process for manufacturing organic silazane polymers and ceramics therefrom 失效
标题翻译：从其制造有机硅氮烷聚合物和陶瓷的方法
公开(公告)号：US4847345A
公开(公告)日：1989-07-11
申请号：US159315
申请日：1988-02-23
申请人： Minoru Takamizawa , Yoshihumi Takeda , Akira Hayashida , Tsutomu Takeno
发明人： Minoru Takamizawa , Yoshihumi Takeda , Akira Hayashida , Tsutomu Takeno
IPC分类号： C01B21/068 , C01B31/36 , C04B35/571 , C04B35/589 , C08G77/48 , C08G77/60 , C08G77/62 , D01F9/10
CPC分类号： C08G77/60 , C04B35/571 , C04B35/589 , C08G77/62
摘要： A process for manufacturing an organic silazane polymer which comprises reacting an organic silicon compound of the following formula (I): ##STR1## in which R represents hydrogen, chlorine, bromine, methyl radical, ethyl radical, phenyl radical or vinyl radical, R.sub.1 represents hydrogen or methyl radical and X represents chlorine or bromine, or a mixture of organic silicon compounds of the formula (I) above and an organic silicon compound of the following formula (II): ##STR2## in which R.sub.2 and R.sub.3 represent hydrogen, chlorine, bromine, methyl radical, ethyl radical, phenyl radical or vinyl radical and X represents chlorine or bromine with a disilazane of the following formula (III): ##STR3## in which R.sub.4, R.sub.5, R.sub.6 represents hydrogen, methyl radical, ethyl radical, phenyl radical or vinyl radical in an anhydrous state at a temperature of from 25.degree. to 350.degree. C. while distilling off by-produced organic ingredients out of the system to obtain an organic silazane polymer. The organic silazane polymer is useful for preceramic materials.
摘要翻译：一种制备有机硅氮烷聚合物的方法，其包括使下式（I）的有机硅化合物：其中R表示氢，氯，溴，甲基，乙基，苯基或乙烯基，R 1表示氢或甲基，X表示氯或溴，或上述式（I）的有机硅化合物与下式（II）的有机硅化合物的混合物：其中R 2 并且R 3代表氢，氯，溴，甲基，乙基，苯基或乙烯基，X代表氯或溴与下列通式（III）的二硅氮烷：其中R4，R5，R6 在25至350℃的温度下，以无水状态代表氢，甲基，乙基，苯基或乙烯基，同时将副产物的有机成分蒸馏出体系，得到有机硅氮烷聚合物。有机硅氮烷聚合物可用于陶瓷材料。

7. 发明授权

US5252691A P-vinylphenoxydimethylphenylcarbyldimethylsilane homopolymer 失效
标题翻译：对乙烯基苯氧基二甲基苯基二甲基硅烷均聚物
公开(公告)号：US5252691A
公开(公告)日：1993-10-12
申请号：US819239
申请日：1992-01-13
申请人： Osamu Watanabe , Motoyuki Yamada , Fujio Yagihashi , Minoru Takamizawa
发明人： Osamu Watanabe , Motoyuki Yamada , Fujio Yagihashi , Minoru Takamizawa
IPC分类号： C08F30/08 , C08F130/08 , G03F7/075
CPC分类号： C08F130/08 , G03F7/0758
摘要： A p-vinylphenoxydimethylphenylcalbyldimethylsilane homopolymer having a molecular weight dispersion narrow enough to ensure high resolution and high developability to resists containing said homopolymer as main component can be manufactured by anionic polymerization of a p-vinylphenoxydimethylphenylcalbyldimethylsilane monomer.

8. 发明授权

US5219681A Lithium cell 失效
标题翻译：锂电池
公开(公告)号：US5219681A
公开(公告)日：1993-06-15
申请号：US771432
申请日：1991-10-10
申请人： Motoyuki Yamada , Osamu Watanabe , Toru Nakanishi , Minoru Takamizawa
发明人： Motoyuki Yamada , Osamu Watanabe , Toru Nakanishi , Minoru Takamizawa
IPC分类号： H01B1/12 , H01M10/05 , H01M10/0565
CPC分类号： H01M10/052 , H01M10/0565
摘要： A lithium cell having excellent discharging and recharging characteristics is proposed which is characteristic in the unique formulation of the polymeric solid electrolyte composition having a high ionic conductivity to fill the space between the anode and the cathode. The electrolyte composition comprises: (a) a block copolymer of styrene and 4-hydroxystyrene, of which the phenolic hydroxy groups in the 4-hydroxystyrene moiety are substituted by the grafting chains of poly(ethylene oxide) moiety having a specified chain length, (b) an ionic lithium salt and (c) a poly(ethylene oxide) in a specified weight proportion.
摘要翻译：提出了具有优异的放电和充电特性的锂电池，其特征在于具有高离子电导率的聚合物固体电解质组合物以填充阳极和阴极之间的空间。电解质组合物包括：（a）苯乙烯和4-羟基苯乙烯的嵌段共聚物，其中4-羟基苯乙烯部分中的酚羟基被具有指定链长的聚（环氧乙烷）部分的接枝链取代（ b）离子锂盐和（c）特定重量比的聚（环氧乙烷）。

9. 发明授权

US5750636A Process for the preparation of a high-molecular-weight polycarbodiimide solution 失效
标题翻译：制备高分子量聚碳二亚胺溶液的方法
公开(公告)号：US5750636A
公开(公告)日：1998-05-12
申请号：US658165
申请日：1996-06-04
申请人： Yasuyoshi Komoto , Yasuyuki Takiguchi , Ken Yahata , Akira Hayashida , Minoru Takamizawa
发明人： Yasuyoshi Komoto , Yasuyuki Takiguchi , Ken Yahata , Akira Hayashida , Minoru Takamizawa
IPC分类号： C08G18/00 , C08G18/02 , C08G73/00 , C08G73/10
CPC分类号： C08G73/00 , C08G18/025
摘要： This invention provides a process wherein a stable solution of polycarbodiimide with a number-average molecular-weight of 5,000 to 60,000 can be very easily prepared by using an organic diisocyanate (e.g., 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate) as starting material, a cyclic phosphine oxide as catalyst and a chlorinated aromatic compound as solvent and by controlling certain reaction conditions within the reaction temperature range of 110.degree. to 150.degree. C.
摘要翻译：本发明提供一种方法，其中通过使用有机二异氰酸酯（例如，2,4-甲苯二异氰酸酯或2,6-甲苯二异氰酸酯）可以非常容易地制备数均分子量为5,000至60,000的聚碳化二亚胺的稳定溶液，作为起始原料，作为催化剂的环状氧化膦和氯化芳族化合物作为溶剂，并通过在110℃至150℃的反应温度范围内控制某些反应条件。

10. 发明授权

US5157096A Method and apparatus for preparing organic silazane polymer and method for preparing inorganic fibers 失效
标题翻译：用于制备有机硅烷聚合物的方法和装置及其制备无机纤维的方法
公开(公告)号：US5157096A
公开(公告)日：1992-10-20
申请号：US554129
申请日：1990-07-17
申请人： Yoshio Hasegawa , Minoru Takamizawa , Akira Hayashida , Yoshihumi Takeda
发明人： Yoshio Hasegawa , Minoru Takamizawa , Akira Hayashida , Yoshihumi Takeda
IPC分类号： C04B35/589 , C08G77/62
CPC分类号： C08G77/62 , C04B35/589
摘要： An organic silazane polymer is prepared by passing a silazane compound in por form through a hollow tube heated at 400.degree. to 700.degree. C. for activation and thermally polymerizing the silazane compound in a liquid phase. Inorganic fibers can be prepared from the organic silazane polymer by melt spinning, infusibilizing, and sintering. An apparatus for preparing an organic silazane polymer is also provided, comprising a heated reactor vessel for evaporating and thermally polymerizing a silazane compound, a heated hollow tube in flow communication with said reactor vessel for receiving the silazane compound vapor and heating it at 400.degree. to 700.degree. C. for activation, and a conduit, with a condenser for condensing the vapor, for feeding the condensed silazane compound back to the reactor.

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