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    A method for preparing a carbon/carbon composite material
    41.
    发明公开
    A method for preparing a carbon/carbon composite material 失效
    Verfahren zur Herstellung von Kohlenstoff / Kohlenstoffverbundmaterial。

    公开(公告)号：EP0656331A2

    公开(公告)日：1995-06-07

    申请号：EP94118606.6

    申请日：1994-11-25

    申请人： NIPPON OIL Co. Ltd.

    发明人： Soda, Yoshio, c/o Nippon Oil Co., Ltd. ,  Kohno, Takefumi, c/o Nippon Oil Co., Ltd. ,  Shinagawa, Masaaki, c/o Nippon Oil Co., Ltd. ,  Kiuchi, Noriyuki, c/o Nippon Oil Co., Ltd.

    IPC分类号： C04B35/83

    CPC分类号： C04B35/83

    摘要： A method for preparing a carbon/carbon composite material comprising the steps of impregnating a carbon preform with carbonaceous pitch and carbonizing or carbonizing and graphitizing the thus impregnated preform to densify the preform thereby to provide a carbon/carbon composite material, characterized in that said carbonization or carbonization and graphitization are carried out at 500 - 3000 °C in an inert gas atmosphere, and a densification parameter expressed by the following formula densification parameter = (yield of carbonized pitch obtained by carbonization of carbonaceous pitch under pressure) × (relative density of carbonized pitch obtained from said pitch under pressure) is not less than 0.1, and also characterized in that pressure applied in the step of densification is in the range of from higher than atmospheric pressure to lower than 10 kgf/cm².

    摘要翻译： 一种制备碳/碳复合材料的方法，包括以下步骤：用碳质沥青浸渍碳预型体并进行碳化或碳化，并将由此浸渍的预成型体石墨化以使预型体致密化，从而提供碳/碳复合材料，其特征在于所述碳化 或碳化和石墨化在惰性气体气氛中在500-3000℃下进行，并且通过下列公式致密化参数表示的致密化参数=（在压力下由碳质沥青碳化获得的碳化沥青的产率）×（相对密度 在压力下从所述沥青获得的碳化沥青不小于0.1，其特征还在于，在致密化步骤中施加的压力在高于大气压至低于10kgf / cm 2的范围内。

    A process for removing iron impurities from petroleum oil distillation residues
    45.
    发明公开
    A process for removing iron impurities from petroleum oil distillation residues 失效
    一种从石油蒸馏残余物中除去铁杂质的方法

    公开(公告)号：EP0641852A2

    公开(公告)日：1995-03-08

    申请号：EP94306462.6

    申请日：1994-09-02

    申请人： NIPPON OIL CO. LTD.

    发明人： Kamiya, Kozo ,  Morita, Toru ,  Fujiyama, Yuichiro ,  Ushio, Masaru

    IPC分类号： C10G32/02

    CPC分类号： C10G32/02

    摘要： A process for removing iron impurities, inter alia iron or iron compounds, from petroleum oil distillation residues is disclosed in which a high gradient magnetic separator incorporates a pack of ferromagnetic fillers in the form of a generally flat or curved sheet-like strip. The ferromagnetic filler is a Fe-Cr alloy of a selected composition and the strip is of selected geometric characteristics such that the rate of removal of iron impurities can be maintained substantially at a maximum throughout the separation mode of operation prior to and after washing of the ferromagnetic filler.

    摘要翻译： 公开了一种从石油蒸馏残余物中除去铁杂质，特别是铁或铁化合物的方法，其中高梯度磁力分离器结合了大体上平坦或弯曲的片状条形式的铁磁填料组。 铁磁性填料是选定组成的Fe-Cr合金，并且条具有选定的几何特性，使得在整个分离操作模式中，在洗涤之前和之后，铁杂质的除去速率可基本保持在最大值 铁磁填料。

    Process for preparing polyolefins
    50.
    发明公开
    Process for preparing polyolefins 失效
    制备聚烯烃的方法

    公开(公告)号：EP0581611A3

    公开(公告)日：1994-07-06

    申请号：EP93306063.4

    申请日：1993-07-30

    申请人： NIPPON OIL Co. Ltd.

    发明人： Shiraishi, Takeichi ,  Matsuura, Kazuo ,  Kamiishi, Hirohumi

    IPC分类号： C08F4/656 ,  C08F10/00

    CPC分类号： C08F10/00 ,  C08F4/6567

    摘要： A process for preparing a polyolefin high in bulk density, narrow in particle size distribution, superior in fluidity and with no formation of coarse particles is provided. In a process of preparing a polyolefin by homopolymerzing or copolymerizing an olefin or olefins in the presence of a catalyst containing a solid catalyst component and an organometallic compound as essential components, there is used as the said solid catalyst component a material obtained by contacting the following components [A], [B] and [C] with one another :
    [A] a reaction product resulting from a contact reaction of a magnesium halide and a titanium compound represented by the general formula Ti(OR 1 ) 4 where R 1 is a hydrocarbon group having 1 to 20 carbon atoms ; [B] a reaction product resulting from a contact reaction of an aluminum halide and silicon compound represented by the general formula Si(OR 2 ) 4 where R 2 is a hydrocarbon group having 1 to 20 carbon atoms ; and [C] an organoaluminum compound represented by the general formula AIR 3 n X 3-n where R 3 is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom and n is 0