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    Propylene-ethylene copolymer having improved stretchability
    13.
    发明授权
    Propylene-ethylene copolymer having improved stretchability 失效
    具有改善的拉伸性的丙烯 - 乙烯共聚物

    公开(公告)号：US4414373A

    公开(公告)日：1983-11-08

    申请号：US399146

    申请日：1982-07-16

    申请人： Akinobu Shiga ,  Kiyoshi Matsuyama ,  Masahiro Kakugo ,  Yukio Naito ,  Seiichiro Ima ,  Katsuyoshi Yamashita

    发明人： Akinobu Shiga ,  Kiyoshi Matsuyama ,  Masahiro Kakugo ,  Yukio Naito ,  Seiichiro Ima ,  Katsuyoshi Yamashita

    IPC分类号： C08F4/00 ,  C08F2/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/06 ,  C08F210/00 ,  C08F210/06 ,  C08F210/16

    CPC分类号： C08F210/06

    摘要： In a process for producing polypropylene comprising polymerizing propylene in the presence of hydrogen and a catalyst system comprising (A) titanium trichloride obtained by reducing titanium tetrachloride with an organoaluminum compound and reacting the reduced solid with an ether represented by the formula:R.sup.1 --O--R.sup.2wherein R.sup.1 and R.sup.2 are defined hereinbefore, and a halogen compound selected from the group consisting of (i) halogen or interhalogen compounds of the formula, X.sup.1 X.sup.2.sub.a (wherein X.sup.1, X.sup.2 and a are defined hereinbefore), (ii) titanium halides, and (iii) organic halogen compounds, simultaneously or successively and (B) an organoaluminum compound, the improvement which comprises supplying ethylene together with propylene to the polymerization system such that the ethylene concentration in the vapor phase of the system based on the total amount of propylene, ethylene and hydrogen in the vapor phase of the system is 0.15 to 1.5 mol % to obtain a propylene-ethylene copolymer having an ethylene content of from 0.1 to 1.0 wt % is disclosed. The propylene-ethylene copolymer is improved in stretchability.

    摘要翻译： 在制备聚丙烯的方法中，包括在氢气存在下聚合丙烯和催化剂体系，所述催化剂体系包含（A）通过用有机铝化合物还原四氯化钛获得的三氯化钛，并将还原的固体与由下式表示的醚反应：R1-O- 其中R 1和R 2如上定义，卤素化合物选自（ⅰ）卤素或下式的卤代化合物：X1X2a（其中X1，X2和a定义如前），（ⅱ）卤化钛和 （iii）有机卤素化合物，同时或相继和（B）有机铝化合物，其改进包括将乙烯与丙烯一起供应到聚合体系中，使得基于丙烯总量的体系的气相中的乙烯浓度 ，系统的气相中的乙烯和氢为0.15〜1.5摩尔％，得到丙烯 - 乙烯共聚物 公开了乙烯含量为0.1〜1.0重量％。 丙烯 - 乙烯共聚物的拉伸性提高。

    Process for producing highly stereoregular .alpha.-olefin polymers
    14.
    发明授权
    Process for producing highly stereoregular .alpha.-olefin polymers 失效
    制备高度立构规则的α-烯烃聚合物的方法

    公开(公告)号：US4412049A

    公开(公告)日：1983-10-25

    申请号：US456560

    申请日：1983-01-10

    申请人： Akinobu Shiga ,  Yukio Naito ,  Toshio Sasaki ,  Junpei Kojima ,  Hiroshi Yoshioka

    发明人： Akinobu Shiga ,  Yukio Naito ,  Toshio Sasaki ,  Junpei Kojima ,  Hiroshi Yoshioka

    IPC分类号： C08F4/64 ,  C08F10/00 ,  C08F4/02 ,  C08F10/06

    CPC分类号： C08F10/00

    摘要： A process for producing highly stereoregular .alpha.-olefin polymers which comprises polymerizing .alpha.-olefins in the presence of a catalyst system comprising:(A) a solid catalyst obtained by contact reaction between(a) a solid product prepared by reacting an organo-magnesium compound with at least one of halogenated silicon compound (I) and halogenated aluminum compound (II) in a solvent and(b) a titanium compound having both titanium-aryloxy and titanium-halogen linkages, and(B) an organo-aluminum compound as an activating agent.

    摘要翻译： 一种制备高度立构规整的α-烯烃聚合物的方法，其包括在催化剂体系存在下聚合α-烯烃，该催化剂体系包含：（A）通过以下步骤获得的固体催化剂：（a）通过使有机镁化合物 与卤化硅化合物（I）和卤化铝化合物（II）中的至少一种在溶剂中反应，和（b）具有钛 - 芳氧基和钛 - 卤素键的钛化合物，和（B）有机铝化合物 活化剂。

    Process for the production of purified propylene homopolymers or copolymers
    19.
    发明授权
    Process for the production of purified propylene homopolymers or copolymers 失效
    制备纯化丙烯均聚物或共聚物的方法

    公开(公告)号：US4461881A

    公开(公告)日：1984-07-24

    申请号：US314344

    申请日：1981-10-23

    申请人： Akinobu Shiga ,  Kiyoshi Matsuyama ,  Masahiro Kakugo ,  Yukio Naito ,  Takatoshi Suzuki

    发明人： Akinobu Shiga ,  Kiyoshi Matsuyama ,  Masahiro Kakugo ,  Yukio Naito ,  Takatoshi Suzuki

    IPC分类号： C08F6/00 ,  C08F6/02 ,  C08F6/06 ,  C08F10/06 ,  C08F6/08 ,  C08F4/64

    CPC分类号： C08F6/02 ,  C08F10/00 ,  C08F10/06

    摘要： In a process for producing a homopolymer or a copolymer of propylene comprising polymerizing propylene or copolymerizing propylene and at least one other unsaturated hydrocarbon monomer in liquid propylene using a catalyst system containing activated titanium trichloride (a) and an organoaluminum compound (b), the activated titanium trichloride (a) being prepared by reducing titanium tetrachloride with an organoaluminum compound followed by activation, to produce a polymer slurry; introducing the polymer slurry produced into the top of a counter-current washing tower; and washing the polymer slurry by counter-currently contacting the polymer slurry with liquid propylene introduced into the bottom of the washing tower, the improvement which comprises purifying the homopolymer or copolymer of propylene by feeding an epoxide in a molar amount of about 1 to about 15 times the molar amount of the total of activated titanium trichloride (a) and organoaluminum compound (b), to a part of said washing tower, thereby deactivating the catalyst and removing the catalyst residue and the homopolymer or copolymer of propylene dissolved in the polymer slurry.

    摘要翻译： 在使用包含活化的三氯化钛（a）和有机铝化合物（b）的催化剂体系的丙烯均聚物或共聚物的制备方法中，该方法包括聚合丙烯或使液体丙烯中的至少一种其它不饱和烃单体共聚， 三氯化钛（a）通过用有机铝化合物还原四氯化钛然后活化而制备，以产生聚合物浆料; 将产生的聚合物浆料引入逆流洗涤塔的顶部; 并且通过将聚合物浆料与引入洗涤塔底部的液态丙烯反向接触来洗涤聚合物浆料，其改进包括通过加入摩尔量为约1至约15的环氧化物纯化丙烯的均聚物或共聚物 倍的活化三氯化钛（a）和有机铝化合物（b）的总量的摩尔量与所述洗涤塔的一部分反应，从而使催化剂失活并除去溶解在聚合物浆料中的催化剂残余物和丙烯均聚物或共聚物 。