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1. 发明授权

US5750637A Process for the preparation of a polycarbodiimide solution 失效
标题翻译：制备聚碳二亚胺溶液的方法
公开(公告)号：US5750637A
公开(公告)日：1998-05-12
申请号：US658166
申请日：1996-06-04
申请人： Yasuyuki Takiguchi , Ken Yahata , Yasuyoshi Komoto , Akira Hayashida , Minoru Takamizawa
发明人： Yasuyuki Takiguchi , Ken Yahata , Yasuyoshi Komoto , 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 for the preparation of a polycarbodiimide solution wherein the polycarbodiimide is synthesized by heating an organic diisocyanate (e.g., 2,4-tolylene diisocyanate or 2,6-tolylene diisocyanate) in the presence of a carbodiimidation catlayst characterized in that a non-chlorinated aromatic hydrocarbon is used as the solvent and the resulting polycarbodiimide has a number average molecular weight from about 3,000 to about 10,000; wherein the synthesis is performed in the temperature range of from about 100.degree. to about 120.degree. C.
摘要翻译：本发明提供一种制备聚碳二亚胺溶液的方法，其中聚碳二亚胺通过在碳二亚胺二酰亚胺存在下加热有机二异氰酸酯（例如，2,4-甲苯二异氰酸酯或2,6-甲苯二异氰酸酯）来合成，其特征在于，使用非氯化芳烃作为溶剂，所得聚碳二亚胺的数均分子量为约3,000至约10,000; 其中合成在约100℃至约120℃的温度范围内进行。

2. 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。

3. 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。

4. 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。

5. 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。

6. 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.

7. 发明授权

US5145813A 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：US5145813A
公开(公告)日：1992-09-08
申请号：US527109
申请日：1990-05-22
申请人： Yoshifumi Takeda , Minoru Takamizawa , Tsutomu Takeno , Akira Hayashida
发明人： Yoshifumi Takeda , Minoru Takamizawa , Tsutomu Takeno , Akira Hayashida
IPC分类号： C04B35/571 , C04B35/589 , C08G77/62
CPC分类号： C08G77/62 , C04B35/571 , C04B35/589
摘要： A process for manufacturing an organic silazane polymer which comprises: reacting ammonia with a mixture of organosilicic compounds (I) and (II) wherein R is a methyl group, an ethyl group, or a phenyl group, and R.sub.1 is a hydrogen atom or a vinyl group, and X is a chlorine or a bromine atom; then polymerizing the thus obtained silazane compound in the presence of an alkali catalyst. A process for manufacturing a ceramic fiber which comprises melting, spinning, and rendering the organic silazane polymer infusible and then baking the same is also disclosed, as are improved silazane polymers and ceramic articles made therefrom ##STR1##
摘要翻译：一种制备有机硅氮烷聚合物的方法，其包括：使氨与有机硅化合物（I）和（II）的混合物反应，其中R是甲基，乙基或苯基，R 1是氢原子或乙烯基，X是氯或溴原子; 然后在碱催化剂的存在下使得到的硅氮烷化合物聚合。还公开了一种制造陶瓷纤维的方法，其包括熔融，纺丝和使无机的有机硅氮烷聚合物然后烘烤该陶瓷纤维，以及由其制备的改进的硅氮烷聚合物和陶瓷制品。（I））

8. 发明授权

US4550151A Organoborosilicon polymer and a method for the preparation thereof 失效
标题翻译：有机硼硅聚合物及其制备方法
公开(公告)号：US4550151A
公开(公告)日：1985-10-29
申请号：US678221
申请日：1984-12-05
申请人： Minoru Takamizawa , Taishi Kobayashi , Akira Hayashida , Yoshihumi Takeda
发明人： Minoru Takamizawa , Taishi Kobayashi , Akira Hayashida , Yoshihumi Takeda
IPC分类号： C08G77/00 , C08G77/48 , C08G77/56 , C08G77/60 , C08G79/00 , C08G79/02 , C08G79/08
CPC分类号： C08G77/60 , C08G79/08
摘要： The invention provides a novel organoborosilicon polymer comprising two types of the recurring monomeric units represented by the general formulas of, one, --SiR.sup.1.sub.2 --CH.sub.2 -- and, the other, --BR.sup.2 --NR.sup.3 --, in which R.sup.1, R.sup.2 and R.sup.3 are each a hydrogen atom or a monovalent hydrocarbon group. Such an organoborosilicon polymer is readily prepared by the thermal decomposition polymerization reaction of an organopolysilane compound and a borazine compound at 250.degree. to 500.degree. C. and useful as a precursor of an inorganic ceramic material or inorganic fibers or as a binder of ceramics.
摘要翻译：本发明提供了一种新型的有机硼硅聚合物，其包含由以下通式表示的两种类型的重复单体单元：一个，-SiR 12 -CH 2 - 和另一个-BR 2 -NR 3 - ，其中R 1，R 2和R 3各自为氢原子或一价烃基。这种有机硼硅聚合物可以容易地通过有机聚硅烷化合物和环硼氮烷化合物的热分解聚合反应在250-500℃下制备，并且可用作无机陶瓷材料或无机纤维或陶瓷的粘合剂的前体。

9. 发明授权

US4869854A 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：US4869854A
公开(公告)日：1989-09-26
申请号：US114111
申请日：1987-10-27
申请人： Yoshihumi Takeda , Minoru Takamizawa , Akira Hayashida
发明人： Yoshihumi Takeda , Minoru Takamizawa , Akira Hayashida
IPC分类号： C03B8/02 , C04B35/571 , C04B35/589 , C08G77/62 , C08L83/16
CPC分类号： C08L83/16 , C04B35/571 , C04B35/589 , C08G77/62
摘要： A process for manufacturing an organic silazane polymer which comprises reacting ammonia with a mixture of at least one compound selected from the group consisting of organic silicon compounds of the following formulae (I) and (II) ##STR1## and at least one compound selected from the group consisting of organic silicon compounds of the following formula (III) ##STR2## in which R represents hydrogen, chlorine, bromine, methyl radical, ethyl radical, phenyl radical or vinyl radical, R.sub.1 represents hydrogen or methyl radical, R.sub.2 represents hydrogen, methyl radical, ethyl radical, phenyl radical or vinyl radical and X represents chlorine or bromine; to obtain an ammonolysis product. The ammonolysis product is polymerized in the presence of a basic catalyst capable of deprotonation to obtain an organic silazane polymer. The silazane polymer may be further melted, shaped and infusibilized. The thus infusibilized product is finally sintered to obtain a ceramic material.
摘要翻译：一种制备有机硅氮烷聚合物的方法，其包括使氨与至少一种选自下式（I）和（II）的有机硅化合物的化合物的混合物反应：（IMA） II）和选自下式（III）的有机硅化合物（III）中的至少一种化合物，其中R表示氢，氯，溴，甲基，乙基，苯基或乙烯基 R1表示氢或甲基，R2表示氢，甲基，乙基，苯基或乙烯基，X表示氯或溴; 以获得氨解产物。氨解产物在能够去质子化的碱性催化剂存在下聚合，得到有机硅氮烷聚合物。硅氮烷聚合物可以进一步熔融，成型和不熔化。将这样的不熔化产物最终烧结得到陶瓷材料。

10. 发明授权

US4771118A Process for manufacturing organic silazane polymers and process for manufacturing ceramics from the polymers 失效
标题翻译：用于制造有机硅氮烷聚合物的方法和由聚合物制造陶瓷的方法
公开(公告)号：US4771118A
公开(公告)日：1988-09-13
申请号：US903409
申请日：1986-09-03
申请人： Minoru Takamizawa , Mitsuo Umemura , Masato Kanari , Yoshihumi Takeda , Akira Hayashida
发明人： Minoru Takamizawa , Mitsuo Umemura , Masato Kanari , Yoshihumi Takeda , Akira Hayashida
IPC分类号： C08G77/48 , C04B35/571 , C04B35/589 , C08G77/62 , C08G77/06
CPC分类号： C04B35/589 , C08G77/62
摘要： A process for manufacturing an organic silazane polymer which comprises reacting ammonia with a mixture of methyldichlorosilane, methyltrichlorosilane and dimethyldichlorosilane to obtain an ammonolysis product. The ammonolysis product is polymerized in the presence of a basic catalyst capable of deprotonation to obtain an organic silazane polymer. The silazane polymer may be further melted, shaped and infusibilized. The thus infusibilized product is finally sintered to obtain a ceramic material.
摘要翻译：一种制备有机硅氮烷聚合物的方法，其包括使氨与甲基二氯硅烷，甲基三氯硅烷和二甲基二氯硅烷的混合物反应以获得氨解产物。氨解产物在能够去质子化的碱性催化剂存在下聚合，得到有机硅氮烷聚合物。硅氮烷聚合物可以进一步熔融，成型和不熔化。将这样的不熔化产物最终烧结得到陶瓷材料。

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