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    POLYMETALLOCARBOSILANE, AND PROCESS FOR ITS PRODUCTION
    1.
    发明专利
    POLYMETALLOCARBOSILANE, AND PROCESS FOR ITS PRODUCTION 未知

    公开(公告)号：CA1154032A

    公开(公告)日：1983-09-20

    申请号：CA365146

    申请日：1980-11-20

    Applicant: UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOHITO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKEMI

    IPC: C01B31/30 ,  C04B35/571 ,  C08G77/58 ,  C08G77/60

    Abstract: 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 wherein R represents a hydrogen atom, a lower alkyl group or a phenyl group, andan organometallic compound represented by the general formula MX4 wherein 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-CH2? to the total nunnber 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. Molded articles obtained by firing the polymetallocarbosilane exhibit excellent mechanical properties and oxidation resistance at high temper-atures.

    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF
    3.
    发明专利
    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF 未知

    公开(公告)号：DE3066769D1

    公开(公告)日：1984-04-05

    申请号：DE3066769

    申请日：1980-11-28

    Applicant: UBE INDUSTRIES

    Inventor： YAJIMA SEISHI TOHOKU DAIGAKU S ,  OKAMURA KIYOHITO TOHOKU DAIGAK ,  HASEGAWA YOSHIO ,  YAMAMURA TAKEMI

    IPC: C04B35/571 ,  C04B35/589 ,  C04B35/63 ,  C04B35/56 ,  C01B31/30 ,  C08G81/00

    Abstract: A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500 DEG to 2300 DEG 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-CH2- 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 DEG C. to 2300 DEG 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 TiC1-x wherein 0

    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF
    4.
    发明专利
    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF 未知

    公开(公告)号：CA1161068A

    公开(公告)日：1984-01-24

    申请号：CA373752

    申请日：1981-03-24

    Applicant: UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOHITO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKEMI

    IPC: C04B35/571 ,  C04B35/63 ,  C08G77/398 ,  C04B35/56

    Abstract: Title of the Invention SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500 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-CH2? and zirconoxane units of the formula ?Zr-0? ; 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 0, said sintered body being composed substantially of (1) an amorphous material consisting substantially of Si, Zr and C and optionally of 0, or (2) an aggregate consisting substantially of ultrafine crystalline particles of .beta.-SiC, ZrC, a solid solution of .beta.-SiC and ZrC and ZrC1-x wherein 0

    ORGANOMETALLIC SILOXANE BLOCK COPOLYMERS AND PREPARATION THEREOF
    6.
    发明专利
    ORGANOMETALLIC SILOXANE BLOCK COPOLYMERS AND PREPARATION THEREOF 未知

    公开(公告)号：CA1151792A

    公开(公告)日：1983-08-09

    申请号：CA355008

    申请日：1980-06-27

    Applicant: UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOHITO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKEMI

    IPC: C01B31/30 ,  C04B35/571 ,  C08G77/42 ,  C08G77/58 ,  C08L83/10

    Abstract: 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-CH2?, with (2) a polymetallosiloxan 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.

    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF
    7.
    发明专利
    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF 未知

    公开(公告)号：CA1146598A

    公开(公告)日：1983-05-17

    申请号：CA365781

    申请日：1980-11-28

    Applicant: UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOHITO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKEMI

    IPC: C04B35/571 ,  C04B35/589 ,  C04B35/63 ,  C04B35/56

    Abstract: A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500 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-CH2? 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 0, said sintered by being composed substantially of (1) an amorphous material consisting substantially of Si, Ti and C and optionally of 0, or (2) an aggregate consisting substantially of ultrafine crystalline particles of .beta.-SiC, TiC, a solid solution of .beta.-SiC and TiC and TiC1-x wherein o

    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF
    10.
    发明专利
    SINTERED CERAMIC BODY AND PROCESS FOR PRODUCTION THEREOF 未知

    公开(公告)号：DE3164100D1

    公开(公告)日：1984-07-19

    申请号：DE3164100

    申请日：1981-03-25

    Applicant: UBE INDUSTRIES

    Inventor： YAJIMA SEISHI TOHOKU DAIGAKU S ,  OKAMURA KIYOHITO TOHOKU DAIGAK ,  HASEGAWA YOSHIO ,  YAMAMURA TAKEMI

    IPC: C04B35/571 ,  C04B35/63 ,  C08G77/398 ,  C04B35/56 ,  C01B31/30 ,  C08G81/00

    Abstract: A process for producing a sintered ceramic body, which comprises heating a semi-inorganic block copolymer at a temperature of from 500 DEG to 2300 DEG 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-CH2) 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 DEG C. to 2300 DEG 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 ZrC1-x wherein O

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