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    Crosslinked organometallic block copolymers and process for production thereof
    3.
    发明授权
    Crosslinked organometallic block copolymers and process for production thereof 失效
    交联的有机金属嵌段共聚物及其制备方法

    公开(公告)号：US4347347A

    公开(公告)日：1982-08-31

    申请号：US160516

    申请日：1980-06-18

    申请人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    发明人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    IPC分类号： C01B31/30 ,  C04B35/571 ,  C08G77/42 ,  C08G77/58 ,  C08G77/60 ,  C08G77/54

    CPC分类号： C01B31/301 ,  C04B35/571 ,  C08G77/42 ,  C08G77/58 ,  C01P2002/72 ,  C01P2002/82

    摘要： A process for producing an organometallic copolymer composed of a polycarbosilane portion and a polymetallosiloxane portion crosslinked with each other, which comprises reacting (1) a polycarbosilane having a main chain skeleton composed mainly of carbosilane units of the formula --Si-CH.sub.2 --, with (2) a polymetallosiloxane having a main chain skeleton composed of metalloxane units of the formula --M-O-- wherein M represents Ti or Zr and siloxane units of the formula --Si-O--, in an organic solvent in an inert atmosphere thereby to bond at least some of the silicon atoms of said polycarbosilane to at least some of the metal atoms M and/or silicon atoms of said polymetallosiloxane through an oxygen atom; and the organometallic copolymer obtained by the aforesaid process.

    摘要翻译： 一种由聚碳硅烷部分和聚硅氧烷部分交联的有机金属共聚物的制造方法，其特征在于，使（1）具有主要由式-Si-CH 2 - 的碳硅烷单元构成的主链骨架的聚碳硅烷与（ 2）具有由式-MO-的金属氧化物单元构成的主要骨架的聚金属硅氧烷，其中M表示Ti或Zr和式-Si-O-的硅氧烷单元，在有机溶剂中在惰性气氛中至少键合 所述聚碳硅烷的一些硅原子通过氧原子与所述聚金属硅氧烷的至少一些金属原子M和/或硅原子; 和通过上述方法获得的有机金属共聚物。

    Sintered ceramic body and process for production thereof
    5.
    发明授权
    Sintered ceramic body and process for production thereof 失效
    烧结陶瓷体及其制造方法

    公开(公告)号：US4336215A

    公开(公告)日：1982-06-22

    申请号：US210445

    申请日：1980-11-25

    申请人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    发明人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    IPC分类号： C04B35/571 ,  C04B35/589 ,  C04B35/63 ,  C04B35/52

    CPC分类号： C04B35/6316 ,  C04B35/571 ,  C04B35/589

    摘要： A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500.degree. to 2300.degree. C. in an environment of vacuum or inert gases, reducing gases or hydrocarbon gases, said copolymer comprising polycarbosilane blocks, having a main-chain skeleton composed mainly of carbosilane units of the formula --Si--CH.sub.2 -- and titanoxane units of the formula --Ti--O--; and shaping the heated product, and simultaneously with, or after, the shaping of the heated product, sintering the shaped product at a temperature of from 800.degree. C. to 2300.degree. C. in an environment of vacuum or inert gases, reducing gases or hydrocarbon gases; and a sintered ceramic body consisting substantially of Si, Ti and C and optionally of O, said sintered by being composed substantially of(1) an amorphous material consisting substantially of Si, Ti and C and optionally of O, or(2) an aggregate consisting substantially of ultrafine crystalline particles of .beta.-SiC, TiC, a solid solution of .beta.-SiC and TiC and TiC.sub.1-x wherein 0

    摘要翻译： 一种烧结陶瓷体的制造方法，其特征在于，在真空或惰性气体，还原气体或烃气体的环境中，在500〜2300℃的温度下加热半无机嵌段共聚物，所述共聚物包含聚碳硅烷嵌段 具有主要由式-Si-CH2-的碳硅烷单元构成的主链骨架和式-Ti-O-的钛氧烷单元; 并且对加热的产品进行成形，并且在加热产品的成型同时或之后，在真空或惰性气体的环境中，在800℃至2300℃的温度下烧结成形产品，还原气体或 碳氢化合物气体; 和基本上由Si，Ti和C组成的烧结陶瓷体，任选地O组成，所述烧结陶瓷体基本上由（1）基本上由Si，Ti和C组成的无定形材料和任选地O组成，或（2）聚集体 基本上由β-SiC，TiC，β-SiC和TiC的固溶体和TiCl-x（其中0

    Process for production of sintered ceramic body
    7.
    发明授权
    Process for production of sintered ceramic body 失效
    烧结陶瓷体的生产工艺

    公开(公告)号：US4556526A

    公开(公告)日：1985-12-03

    申请号：US245849

    申请日：1981-03-20

    申请人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    发明人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    IPC分类号： C04B35/571 ,  C04B35/63 ,  C08G77/398 ,  C04B35/52

    CPC分类号： C08G77/398 ,  C04B35/571 ,  C04B35/6316

    摘要： A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500.degree. to 2300.degree. C. in an environment of vacuum or inert gases, reducing gases or hydrocarbon gases, said copolymer comprising polycarbosilane blocks having a main-chain skeleton composed mainly of carbosilane units of the formula (Si--CH.sub.2) and zirconoxane units of the formula (Zr--O); and shaping the heated product, and simultaneously with, or after, the shaping of the heated product, sintering the shaped product at a temperature of from 800.degree. C. to 2300.degree. C. in an environment of vacuum or inert gases, reducing gases or hydrocarbon gases; and a sintered ceramic body consisting substantially of Si, Zr and C and optionally of O, said sintered body being composed substantially of(1) an amorphous material consisting substantially of Si, Zr and C and optionally of O, or(2) an aggregate consisting subtantially of ultrafine crystalline particles of .beta.-SiC, ZrC, a solid solution of .beta.-SiC and ZrC and ZrC.sub.1-x wherein O

    摘要翻译： 一种烧结陶瓷体的制造方法，其特征在于，在真空或惰性气体，还原气体或烃气体的环境中，在500〜2300℃的温度下加热半无机嵌段共聚物，所述共聚物包含聚碳硅烷嵌段 具有主要由式（Si-CH 2）的碳硅烷单元和式（Zr-O）的氧化锆单元组成的主链骨架; 并且对加热的产品进行成形，并且在加热产品的成型同时或之后，在真空或惰性气体的环境中，在800℃至2300℃的温度下烧结成形产品，还原气体或 碳氢化合物气体; 和基本上由Si，Zr和C组成的烧结陶瓷体以及任选的O，所述烧结体基本上由（1）基本上由Si，Zr和C组成的无定形材料和任选的O组成，或（2）聚集体 由β-SiC，ZrC，β-SiC和ZrC和ZrCl-x的固溶体，其中O

    Novel polymetallocarbosilane, and process for its production
    8.
    发明授权
    Novel polymetallocarbosilane, and process for its production 失效
    新型聚甲基硅烷，以及其生产方法

    公开(公告)号：US4359559A

    公开(公告)日：1982-11-16

    申请号：US208744

    申请日：1980-11-20

    申请人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    发明人： Seishi Yajima ,  Kiyohito Okamura ,  Yoshio Hasegawa ,  Takemi Yamamura

    IPC分类号： C01B31/30 ,  C04B35/571 ,  C08G77/58 ,  C08G77/60 ,  C08F283/00

    CPC分类号： C01B31/30 ,  C04B35/571 ,  C08G77/58 ,  C08G77/60 ,  C01P2002/50 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/82

    摘要： A polymetallocarbosilane having a number average molecular weight of 700 to 100,000 derived from a polycarbosilane having a number average molecular weight of 200 to 10,000 and containing a main-chain skeleton represented mainly by the general formula ##STR1## wherein R represents a hydrogen atom, a lower alkyl group or a phenyl group,and an organometallic compound represented by the general formulaMX.sub.4Wherein M represents Ti or Zr, and X represents an alkoxy group having 1 to 20 carbon atoms, a phenoxy group or an acetylacetoxy group,at least one of the silicon atoms of the polymetallocarbosilane being bonded to the metal atom (M) through an oxygen atom, the ratio of the total number of the structural units --Si--CH.sub.2 -- to the total number of the structural units --M--O-- in the polymetallocarbosilane being in the range of from 2:1 to 200:1; and a process for production thereof.

    摘要翻译： 从数均分子量为200〜10,000的聚碳硅烷衍生的数均分子量为700〜100,000的多元羧酸硅烷，主要由通式“IMAGE”表示的主链骨架，其中R表示氢原子， 低级烷基或苯基，以及由通式MX4表示的有机金属化合物，其中M表示Ti或Zr，X表示碳原子数1〜20的烷氧基，苯氧基或乙酰乙酰氧基， 多金属羧基硅烷的硅原子通过氧原子与金属原子（M）结合，结构单元-Si-CH 2 - 的总数与多元羧基硅烷中的结构单元-MO-的总数之比为 在2：1至200：1的范围内; 及其制造方法。