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    NEW POLYTITANOCARBOSILANE
    13.
    发明专利
    NEW POLYTITANOCARBOSILANE 失效

    公开(公告)号：JPS58132025A

    公开(公告)日：1983-08-06

    申请号：JP281483

    申请日：1983-01-13

    Applicant: TOKUSHU MUKI ZAIRYO KENKYUSHO ,  UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOTO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKETAMI

    IPC: C08G77/00 ,  C08G77/48 ,  C08G77/50 ,  C08G77/58 ,  C08G79/00

    Abstract: PURPOSE:The titled carbosilane capable of forming good inorganic moldings such as continuous fiber and coating films by a baking treatment and useful as a sintering binder or an impregnant, derived from a polycarbosilane and titanium alkoxide. CONSTITUTION:A new polytitanocarbosilane is obtained from (A) a polycarbosilane, number-average MW of 200-10,000, having a main chain skeleton of formulaI(wherein R is H, a lower alkyl or a phenyl) and (B) titanium alkoxide of formula II, wherein R' is a 1-20C alkyl. Said polytitanocarbosilane has a number-average MW of 700-100,000, and is in a crosslinked state in which part of the silicon atoms are bonded to the titanium atoms through oxygen atoms, has a ratio of the total number of SiCH2 units to that of TiO units of 2:1- 200:1, and includes a monofunctional polymer (e.g., formula III) through a tetrafunctional polymer.

    NOVEL POLYTITANOCARBOSILANE AND ITS PREPARATION
    14.
    发明专利
    NOVEL POLYTITANOCARBOSILANE AND ITS PREPARATION 失效

    公开(公告)号：JPS5674126A

    公开(公告)日：1981-06-19

    申请号：JP14997779

    申请日：1979-11-21

    Applicant: UBE INDUSTRIES ,  TOKUSHU MUKI ZAIRYO KENKYUSHO

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOTO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKETAMI

    IPC: C08G77/00 ,  C01G23/00 ,  C08G77/48 ,  C08G77/60

    Abstract: PURPOSE:To obtain a novel polytitanocarbosilane capable of giving a continuous fiber or film having improved properties by heating and calcining, by reacting a specific polycarbosilane with a titanium alkoxide in a specified proportion. CONSTITUTION:(A) A polycarbosilane having a number-average molecular weight of 200-10,000 and a main chain skeleton expressed by formula I (R is H, lower alkyl or phenyl) is reacted with (B) a titanium alkoxide expressed by the formula Ti(OR')4 (R' is 1-20C alkyl) at a ratio between the total number of the structural units of -TiO- in the component (B) and the total number of the structural units expressed by formula II in the component (A) of 2:1-200:1 in an inert atmosphere under heating to link the silicon atoms in the polycarbosilane to the titanium atoms in the titanium alkoxide via the oxygen atoms and give the aimed polytitanocarbosilane having a number-average molecular weight of 700-100,000.

    CONTINUOUS INORGANIC FIBER
    15.
    发明专利
    CONTINUOUS INORGANIC FIBER 失效

    公开(公告)号：JPS6099004A

    公开(公告)日：1985-06-01

    申请号：JP13895684

    申请日：1984-07-06

    Applicant: TOKUSHU MUKI ZAIRYO KENKYUSHO ,  UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOTO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKETAMI

    IPC: D01F9/10 ,  C03C13/02 ,  D01F9/08

    Abstract: PURPOSE:Conjugated inorganic carbide fiber consisting of Si, Ti, and C, which is substantially amorphous, has a specific structure, has more improved mechanical strength, heat resistance, and oxidation resistance than existing SiC fiber obtained from polycarbosilane. CONSTITUTION:The desired fiber made of an agglomerate consisting of (A) amorphous particles comprising Si, Ti, C, and, is necessary, O, and/or (B) ultrafine particles of crystal of beta-SiC, TiC, solid solution of beta-SiC and TiC, and TiC1-x (0

    NOVEL POLYZIRCONOCARBOSILANE AND ITS PREPARATION
    16.
    发明专利
    NOVEL POLYZIRCONOCARBOSILANE AND ITS PREPARATION 失效

    公开(公告)号：JPS5692923A

    公开(公告)日：1981-07-28

    申请号：JP16944379

    申请日：1979-12-27

    Applicant: UBE INDUSTRIES ,  TOKUSHU MUKI ZAIRYO KENKYUSHO

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOTO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKETAMI

    IPC: C08G77/00 ,  C08G77/48 ,  C08G77/60

    Abstract: PURPOSE:The reaction between a specific polycarbosilane and an organozirconium compound affords the titled compound giving a formed product containing SiC-ZrC by calcination with high mechanical properties and oxidation resistance at high temperatures. CONSTITUTION:(A) A polycarbosilane having the main chain skelton of the formula (R is H, lower alkyl, phenyl) and a number-average molecular weight of 200-10,000 and (B) an organozirconium compound of ZrX4 (X is 1-20C alkoxy, phenoxy, acetylacetoxy) are combined so that the ratio of the total number of -SiCH2- structural units in component A to the total number of -ZrO- structural units in component B becomes 2/1-200/1 and they are made to react by heating in an inert atmosphere to bind at least a part of Si atoms in component A through oxygen atoms with Zr atoms in component B, thus producing the objective compound of 700-100,000 number-average molecular weight.

    CONTINUOUS INORGANIC YARN CONTAINING SILICON, ZIRCONIUM AND CARBON
    18.
    发明专利
    CONTINUOUS INORGANIC YARN CONTAINING SILICON, ZIRCONIUM AND CARBON 失效

    公开(公告)号：JPS6065116A

    公开(公告)日：1985-04-13

    申请号：JP13895784

    申请日：1984-07-06

    Applicant: TOKUSHU MUKI ZAIRYO KENKYUSHO ,  UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOTO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKETAMI

    IPC: D01F9/10 ,  D01F9/08

    Abstract: PURPOSE:The titled yarn useful for metals reinforced with fibers and fiber materials for plastic, etc., having improved mechanical strength, heat resistance, and oxidation resistance, having a new structure, comprising an amorphous substance consisting of Si, Zr, C, etc., or an agglomerate of fine crystalline particles of them. CONSTITUTION:The desired yarn comprising (A) an amorphous substance consisting of Si, Zr, C, and, optionally O, obtained by reacting a polycarbosilane having a main chain skeleton shown by the formula (R is H, lower alkyl, or phenyl), having 200-10,000 number-average molecular weight, with an organozirconium compound shown by the formula ZrX4(X is 1-20C alkoxy, phenoxy, or acetylacetoxy) under heating to give a polyzirconocarbosilane, spinning it, followed by making it infusible, or (B) an agglomerate comprising fine crystalline particles consisting of beta-SiC, ZrC, solid solution of beta-SiC and Zr, and ZrC1-x (0

    PRODUCTION OF CONTINUOUS INORGANIC FIBER
    19.
    发明专利
    PRODUCTION OF CONTINUOUS INORGANIC FIBER 失效

    公开(公告)号：JPS57106719A

    公开(公告)日：1982-07-02

    申请号：JP18281780

    申请日：1980-12-25

    Applicant: TOKUSHU MUKI ZAIRYO KENKYUSHO ,  UBE INDUSTRIES

    Inventor： YAJIMA SEISHI ,  OKAMURA KIYOTO ,  HASEGAWA YOSHIO ,  YAMAMURA TAKETAMI

    IPC: D01F9/10 ,  D01F9/08

    Abstract: PURPOSE:The reaction between polycarbosilane and a specific polyzirconosiloxane gives an organometallic copolymer, which is made into fiber, made infusible and calcined to produce complex carbide fiber with much better physical properties and oxidation resistance than SiC fiber. CONSTITUTION:(A) A polycarbosilane with a major chain skelton of formulaI and (B) a polyzirconosiloxane with the major chain skelton consisting of zirconoxane of formula II and siloxane of formula III at a ratio of 30/1-1/30 are mixed so that the amount ratio of the mojor chain skeltons of the former to the latter comes in the range 100/1-1/100. The mixture is heated in an organic solvent in an inert atmosphere to give the crosslinked organometallic copolymer. The solution is made into fiber, made infusible and calcined in vacuum or in an atmosphere of an inert gas or a reducing gas at 800-1,800 deg.C.

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