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    Method for vapor phase polymerization of alpha-olefin
    3.
    发明授权
    Method for vapor phase polymerization of alpha-olefin 失效
    α-烯烃气相聚合方法

    公开(公告)号：US5648581A

    公开(公告)日：1997-07-15

    申请号：US598334

    申请日：1996-02-08

    申请人： Kunimichi Kubo ,  Masahiro Niwa ,  Eiko Kobayashi ,  Mamoru Yoshikawa

    发明人： Kunimichi Kubo ,  Masahiro Niwa ,  Eiko Kobayashi ,  Mamoru Yoshikawa

    IPC分类号： B01J8/24 ,  B01J19/00 ,  C08F2/34 ,  C08F10/00 ,  C07C2/08 ,  C07C2/22 ,  C07C2/34

    CPC分类号： B01J8/1809 ,  B01J19/002 ,  C08F10/00 ,  B01J2208/00044 ,  B01J2208/00734

    摘要： A method for polymerizing or copolymerizing .alpha.-olefin in a vapor phase condition by supplying to a reactor a catalyst composed of a solid catalyst component containing at least titanium and/or vanadium as well as magnesium and an organic aluminum compound wherein the current due to the electric charge transferred from polymer particles electrified to an electrode disposed at a position where sheet-like polymers will be produced in a reactor, as a result of contact of the polymer particles in the reactor with the electrode is determined, and the polymerization or copolymerization is carried out under such condition where the mean value of current is zero or a positive value. As a result, it becomes possible to prevent production of sheet-like polymers and to stably continue the reaction for polymerization.

    摘要翻译： 一种通过向反应器中提供由至少含有钛和/或钒的固体催化剂组分以及镁和有机铝化合物组成的催化剂，从而在气相条件下聚合或共聚α-烯烃的方法，其中由于 测定从聚合物粒子的电荷转移到布置在反应器中将产生片状聚合物的位置处的电极，由于反应器中的聚合物颗粒与电极的接触，聚合或共聚是 在电流的平均值为零或正值的条件下进行。 结果，可以防止片状聚合物的生产并稳定地继续聚合反应。

    Solid catalyst components for olefin polemerization and use thereof
    6.
    发明授权
    Solid catalyst components for olefin polemerization and use thereof 失效
    用于烯烃聚合的固体催化剂组分及其用途

    公开(公告)号：US5604170A

    公开(公告)日：1997-02-18

    申请号：US199561

    申请日：1994-02-22

    申请人： Akira Sano ,  Kunimichi Kubo ,  Kazuo Matsuura ,  Yoshio Tajima

    发明人： Akira Sano ,  Kunimichi Kubo ,  Kazuo Matsuura ,  Yoshio Tajima

    IPC分类号： C08F4/646 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F110/06 ,  C08F210/16 ,  C08F4/64

    CPC分类号： C08F10/00 ,  C08F110/06 ,  C08F210/16 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925

    摘要： An effective catalyst carrier for use in the polymerization of olefins is provided.Said carrier comprises particles of silicon oxide or aluminum oxide satisfying the following characteristics (A) to (E):(A) An average particle diameter as measured by the sieving method is in the range of 20 to 150 .mu.m.(B) A specific surface area as measured by the BET method is in the range of 150 to 600 m.sup.2 /g.(C) The volume of pores ranging in pore radius from 18 to 1,000 Angstroms as measured by the mercury penetration method is in the range of 0.3 to 2.0 cm.sup.3 /g.(D) An apparent specific gravity as measured according to JIS K6220-6.8 is not lower than 0.32.(E) After the particles classified in the range of between 53 .mu.m and 75 .mu.m by the sieving method have been subjected to an ultrasonic disintegration treatment at 40 KHz, 35 W, for 20 minutes, the proportion of 50 .mu.m or smaller particles, i.e., degree of ultrasonic disintegration, is not more than 30%.

    摘要翻译： 提供了一种用于烯烃聚合的有效催化剂载体。 所述载体包含满足以下特征（A）至（E）的氧化硅或氧化铝颗粒：（A）通过筛分方法测量的平均粒径为20-150μm。 （B）通过BET法测定的比表面积为150〜600m 2 / g的范围。 （C）通过水银渗透法测定的孔半径为18〜1000埃的孔的体积在0.3〜2.0cm 3 / g的范围内。 （D）根据JIS K6220-6.8测定的表观比重不低于0.32。 （E）通过筛分方法将分级在53μm至75μm范围内的颗粒在40KHz，35W，20分钟以上进行超声波分解处理，比例为50μm以上 颗粒，即超声崩解度不大于30％。

    Process for preparing polyolefins
    10.
    发明授权
    Process for preparing polyolefins 失效
    聚烯烃的制备方法

    公开(公告)号：US5432236A

    公开(公告)日：1995-07-11

    申请号：US198909

    申请日：1994-02-18

    申请人： Akira Sano ,  Kunimichi Kubo ,  Kazuo Matsuura

    发明人： Akira Sano ,  Kunimichi Kubo ,  Kazuo Matsuura

    IPC分类号： C08F2/34 ,  C08F4/642 ,  C08F10/00

    CPC分类号： C08F10/00 ,  Y10S526/901 ,  Y10S526/908

    摘要： According to the present invention, in a vapor phase polymerization of olefins, there is provided an efficient polyolefin manufacturing process capable of preventing the formation of a sheet-like polymer and allowing an olefin polymerization reaction to be started stably. More particularly, there is provided a process of preparing a polyolefin by homopolymerizing or copolymerizing an olefin or olefins substantially in a vapor phase condition and in the presence of a catalyst comprising a solid catalyst component and an organometallic compound, the solid catalyst component containing magnesium, one or more elements selected from titanium and vanadium and also containing halogen, wherein, in feeding the catalyst into a reactor the interior of which is held substantially in a vapor phase condition, in the presence of a polyolefin serving as a medium for dispersing the catalyst and in a state not substantially inducing a polymerization reaction in the presence of only the said polyolefin serving as the said medium, to start homopolymerization or copolymerization of the olefin(s), a solid catalyst component satisfying the above condition and having an average particle diameter substantially larger than that of the solid catalyst component to be used in a principal stage of the polymerization reaction is used at least until an olefin homopolymer or copolymer is formed in an amount equal to the amount of the polyolefin used as the catalyst dispersing medium.

    摘要翻译： 根据本发明，在烯烃的气相聚合中，提供了能够防止形成片状聚合物并使烯烃聚合反应稳定地开始的有效的聚烯烃制造方法。 更具体地，提供了通过基本上在气相条件下和在包含固体催化剂组分和有机金属化合物的催化剂存在下均匀聚合或共聚烯烃或烯烃来制备聚烯烃的方法，所述固体催化剂组分含有镁， 一种或多种选自钛和钒并且还含有卤素的元素，其中在将催化剂进料到其内部保持基本上处于气相条件的反应器中，在用作分散催化剂的介质的聚烯烃存在下 并且在仅作为所述介质的所述聚烯烃存在下基本上不引起聚合反应的状态下，开始使烯烃均聚或共聚，满足上述条件的固体催化剂组分具有平均粒径 明显大于将要用于固体催化剂组分的固体催化剂组分 至少直到烯烃均聚物或共聚物的形成量与用作催化剂分散介质的聚烯烃的量相同的量使用聚合反应的主要阶段。