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1. 发明授权

US5200371A Method for preparing organic silazane polymers and method for preparing ceramics from the polymers 失效
标题翻译：制备有机硅烷聚合物的方法和从聚合物制备陶瓷的方法
公开(公告)号：US5200371A
公开(公告)日：1993-04-06
申请号：US631272
申请日：1990-12-20
申请人： Yoshihumi Takeda , Akira Hayashida
发明人： Yoshihumi Takeda , Akira Hayashida
IPC分类号： C04B35/571 , C04B35/589 , C08G77/48 , C08G77/60 , C08G77/62 , D01F9/10
CPC分类号： C08G77/60 , C04B35/589
摘要： Organic silazane polymers are prepared by reacting a specific organic silicon compound or a mixture of organic silicon compounds with a disilazane at a temperature of 25.degree. to 350.degree. C. in an anhydrous atmosphere. The polymers are then reacted with ammonia, thereby reducing the residual halogen in the polymers. The resulting organic silazane polymers are resistant against hydrolysis and stable and thus suitable as precursors for manufacturing ceramic fibers and sheets by shaping, infusibilizing and firing.

2. 发明授权

US5008348A Infusibilization of organic silazane polymers 失效
标题翻译：有机硅氮烷聚合物的消融
公开(公告)号：US5008348A
公开(公告)日：1991-04-16
申请号：US371716
申请日：1989-06-27
申请人： Yoshihumi Takeda , Minoru Takamizawa , Akira Hayashida
发明人： Yoshihumi Takeda , Minoru Takamizawa , Akira Hayashida
IPC分类号： C04B20/00 , C04B35/571 , C04B35/589 , C08G77/62 , C08L83/16
CPC分类号： C08L83/16 , C04B20/0056 , C04B35/571 , C04B35/589 , C08G77/62
摘要： An infusible organic silazane polymer is prepared by melting, shaping, and infusibilizing an organic silazane polymer. The infusibilizing step includes two steps of treating the shaped polymer 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 gas. The infusible polymer is efficiently sintered into ceramic fibers without fusion bond.
摘要翻译：通过熔融，成形和渗透有机硅氮烷聚合物制备不熔的有机硅氮烷聚合物。渗透步骤包括用含有不熔硅，硼，磷或金属化合物的蒸气的气体处理成形聚合物的两个步骤，并进一步用含有水蒸汽的气体或氨气进行处理。不熔融聚合物有效地烧结成陶瓷纤维而没有熔接。

3. 发明授权

US4657991A Precursor composition of silicon carbide 失效
标题翻译：前体组成的碳化硅
公开(公告)号：US4657991A
公开(公告)日：1987-04-14
申请号：US787328
申请日：1985-10-15
申请人： Minoru Takamizawa , Taishi Kobayashi , Toshinobu Ishihara , Yoshihumi Takeda , Akira Hayashida
发明人： Minoru Takamizawa , Taishi Kobayashi , Toshinobu Ishihara , Yoshihumi Takeda , Akira Hayashida
IPC分类号： C08L83/00 , C04B35/571 , C08G79/00 , C08L83/02 , C08L83/16 , D01F9/10 , C08F283/00
CPC分类号： C08G79/00 , C04B35/571 , C08L83/16
摘要： The precursor composition of silicon carbide fibers provided by the invention has greatly improved spinnability and can be spun at a very high spinning velocity to give a green filament which has a much larger tensile strength than those of conventional precursor materials and is capable of giving silicon carbide fibers having increased tensile strength by the infusibilization and calcination of the green filament of the composition under tension. The composition comprises from 80 to 99.9 parts by weight of a polycarbosilane polymer and from 20 to 0.01 part by weight of a silmethylene polymer having a degree of polymerization larger than the specified lower limit.
摘要翻译：由本发明提供的碳化硅纤维的前体组合物大大提高了可纺性，并且可以以非常高的纺丝速度纺丝，得到具有比常规前体材料高的拉伸强度的绿色长丝，并且能够提供碳化硅纤维通过在张力下的组合物的绿色细丝的不熔化和煅烧而具有增加的拉伸强度。该组合物包含80-99.9重量份的聚碳硅烷聚合物和20至0.01重量份具有大于规定下限的聚合度的硅亚甲基聚合物。

4. 发明授权

US5296418A Method for manufacturing a hafnium-containing silazane polymer and a method for manufacturing a ceramic from said polymer 失效
标题翻译：含铪硅氮烷聚合物的制造方法和由所述聚合物制造陶瓷的方法
公开(公告)号：US5296418A
公开(公告)日：1994-03-22
申请号：US951571
申请日：1992-10-23
申请人： Yoshihumi Takeda , Akira Hayashida
发明人： Yoshihumi Takeda , Akira Hayashida
IPC分类号： C04B35/571 , C04B35/589 , C08G77/48 , C08G77/60 , D01F9/10 , C04B35/56
CPC分类号： C04B35/589 , C08G77/60
摘要： A hafnium-containing silazane polymer is obtained through a polymerization reaction of which the reactants are(A) a halide of an organic silicon compound;(B) a hafnium compound having a the formula:HfX.sub.4 [I]wherein X is chlorine or bromine, and(C) a disilazane having the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different and are hydrogen, methyl ethyl, phenyl or vinyl.
摘要翻译：通过聚合反应获得含铪硅氮烷聚合物，其反应物为（A）有机硅化合物的卤化物; （B）具有下式的铪化合物：其中X是氯或溴的HfX4（I），和（C）具有下式的二硅氮烷：（*化学结构*）（II）其中R1，R2和R3可以是是氢，甲基乙基，苯基或乙烯基。

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

US5210058A Method for preparing organic silazane polymers and method for preparing ceramics from the polymers 失效
公开(公告)号：US5210058A
公开(公告)日：1993-05-11
申请号：US726578
申请日：1991-07-08
申请人： Yoshihumi Takeda , Akira Hayashida , Toshinobu Ishihara
发明人： Yoshihumi Takeda , Akira Hayashida , Toshinobu Ishihara
IPC分类号： C04B35/584 , C04B35/589 , C08G77/48 , C08G77/62
CPC分类号： C08G77/62 , C04B35/589
摘要： An organic silazane polymer is prepared by reacting ammonia gas with a mixture of a trihalosilane and a monohalosilane, for example, methyltrichlorosilane and trimethylchlorosilane in an organic solvent to form a silazane compound, and heating the silazane compound at 200 to 350.degree. C. for polymerization. By melting, shaping, infusibilizing, and firing the silazane polymer, there is obtained a ceramic material.

8. 发明授权

US5183875A Method for manufacturing a hafnium-containing silazane polymer and a method for manufacturing a ceramic from said polymer 失效
标题翻译：制备含铪硅烷聚合物的方法和从固体聚合物制造陶瓷的方法
公开(公告)号：US5183875A
公开(公告)日：1993-02-02
申请号：US630063
申请日：1990-12-19
申请人： Yoshihumi Takeda , Akira Hayashida
发明人： Yoshihumi Takeda , Akira Hayashida
IPC分类号： C04B35/571 , C04B35/589 , C08G77/48 , C08G77/60 , D01F9/10
CPC分类号： C04B35/589 , C08G77/60
摘要： A hafnium-containing silazane polymer is obtained through a polymerization reaction of which the reactants are(A) a halide of an organic silicon compound;(B) a hafnium compound having a the formula:HfX.sub.4 [I] wherein X is chlorine or bromine, and(C) a disilazane having the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different and are hydrogen, methyl ethyl, phenyl or vinyl.

9. 发明授权

US5041515A Methods for preparing polytitanocarbosilazane polymers and ceramics therefrom 失效
标题翻译：聚钛碳氮烷聚合物和陶瓷的制备方法
公开(公告)号：US5041515A
公开(公告)日：1991-08-20
申请号：US571132
申请日：1990-08-02
申请人： Yoshihumi Takeda , Minoru Takamizawa , Akira Hayashida
发明人： Yoshihumi Takeda , Minoru Takamizawa , Akira Hayashida
IPC分类号： C04B35/565 , C04B35/56 , C04B35/571 , C04B35/583 , C04B35/589 , C04B35/622 , C04B35/63 , C08G77/60 , C08G77/62 , C08G79/00
CPC分类号： C08G79/00 , C04B35/571 , C04B35/583 , C04B35/589 , C04B35/62227 , C04B35/6316 , C08G77/60 , C08G77/62
摘要： Polytitanocarbosilazane polymers useful as ceramic precursors are prepared by reacting organic silicon compounds of first and second types, a titanium compound, and a disilazane. Ceramic fibers are obtained by melt spinning the polymers followed by infusibilization and pyrolysis.

10. 发明授权

US4870035A 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：US4870035A
公开(公告)日：1989-09-26
申请号：US212438
申请日：1988-06-28
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
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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