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    Easily soluble polyethylene powder for the preparation of fibers or films having high strength and high elastic modulus
    1.
    发明授权
    Easily soluble polyethylene powder for the preparation of fibers or films having high strength and high elastic modulus 失效
    用于制备具有高强度和高弹性模量的纤维或薄膜的易溶性聚乙烯粉末

    公开(公告)号：US4760120A

    公开(公告)日：1988-07-26

    申请号：US941858

    申请日：1986-12-15

    Applicant: Akira Sano ,  Tetsujirou Kuroishi ,  Yasunosuke Miyazaki ,  Shigeki Yokoyama ,  Kazuo Matsuura

    Inventor： Akira Sano ,  Tetsujirou Kuroishi ,  Yasunosuke Miyazaki ,  Shigeki Yokoyama ,  Kazuo Matsuura

    IPC: C08L23/06 ,  C08F2/38 ,  C08F4/60 ,  C08F4/634 ,  C08F4/64 ,  C08F8/00 ,  C08F10/02 ,  C08J3/09 ,  C08J5/18 ,  C08L23/00 ,  C08L101/00 ,  D01F6/04

    CPC classification number: C08F10/02 ,  Y10S526/904 ,  Y10S526/905 ,  Y10T428/2982

    Abstract: An ultra-high molecular weight polyethylene powder easily soluble in organic solvents and suitable for use in the preparation of fibers or films having a high strength and a high elastic modulus, said polyethylene powder having an intrinsic viscosity in the range of 5 to 30 dl/g in decalin at 135.degree. C. and being obtained by at least two-step polymerization reactions which are:a first step of polymerizing ethylene in the absence of hydrogen or at a reduced hydrogen concentration, using a catalyst containing a solid catalyst component and an organometallic compound, said solid catalyst component containing at least magnesium and titanium and/or vanadium, to produce 50-99.5 parts by weight, based on 100 parts by weight of a final polyethylene product, of polyethylene having an intrinsic viscosity of 12 to 32 dl/g in decalin at 135.degree. C.; anda second step of polymerizing ethylene at a higher hydrogen concentration that in said first step to produce 50-0.5 parts by weight of polyethylene.

    Abstract translation: 该超高分子量聚乙烯粉末容易溶于有机溶剂，适用于制备具有高强度和高弹性模量的纤维或薄膜，所述聚乙烯粉末的特性粘度在5-30dl / g，在135℃的十氢化萘中，并通过至少两步聚合反应获得，所述反应为：在不存在氢气或在降低的氢浓度下使乙烯聚合的第一步骤，使用含有固体催化剂组分和 有机金属化合物，所述固体催化剂组分至少含有镁和钛和/或钒，基于100重量份的最终聚乙烯产品，产生50-99.5重量份的特性粘度为12至32dl的聚乙烯 / g，在135℃的萘烷中。 以及在较高氢浓度下聚合乙烯的第二步骤，在第一步骤中制备50至0.5重量份的聚乙烯。

    Process for producing polyethylene of ultrahigh molecular weight
    2.
    发明授权
    Process for producing polyethylene of ultrahigh molecular weight 失效
    生产超高分子量聚乙烯的方法

    公开(公告)号：US4923935A

    公开(公告)日：1990-05-08

    申请号：US302564

    申请日：1989-01-26

    Applicant: Akira Sano ,  Shigeki Yokoyama ,  Yasunosuke Miyazaki ,  Tetsujiro Kuroishi ,  Kazuo Matsuura

    Inventor： Akira Sano ,  Shigeki Yokoyama ,  Yasunosuke Miyazaki ,  Tetsujiro Kuroishi ,  Kazuo Matsuura

    IPC: C08F10/00 ,  C08F2/38 ,  C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F4/654 ,  C08F8/00 ,  C08F10/02

    CPC classification number: C08F10/02 ,  C08F10/00

    Abstract: A process for producing polyethylene of ultrahigh molecular weight having an intrinsic viscosity of 10-30 dl/g at 135.degree. C. in decalin is disclosed which comprises at least the following two stages of polymerization reaction: (a) a first reaction stage where in ethylene is polymerized with use of a catalyst comprising a solid component containing at least Mg, Ti and/or Va and in the absence or presence of hydrogen of reduced concentration to produce 70-99.5 weight parts of polyethylene having an intrinsic viscosity of 12-32 dl/g at 135.degree. C. in decalin; and (b) a second reaction stage wherein a fresh feed of ethylene is polymerized in the presence of hydrogen of higher concentration to produce 30-0.5 weight parts of polyethylene having an intrinsic viscosity of 0.1-5 dl/g at 135.degree. C. in decalin.

    Abstract translation: 公开了在135℃下在十氢萘中生产特性粘度为10-30dl / g的超高分子量聚乙烯的方法，其至少包括以下两个阶段的聚合反应：（a）第一反应阶段，其中在 使用包含至少含有Mg，Ti和/或Va的固体组分的催化剂和在还原浓度不存在或不存在的情况下使乙烯聚合，得到70-99.5重量份的特性粘度为12-32的聚乙烯 dl / g，135℃，十氢化萘; 和（b）第二反应阶段，其中乙烯的新鲜进料在较高浓度的氢气存在下聚合，以在135℃下产生特性粘度为0.1-5dl / g的30至0.5重量份的聚乙烯 十氢化萘

    Method for vapor phase polymerization of olefins
    3.
    发明授权
    Method for vapor phase polymerization of olefins 失效
    烯烃气相聚合方法

    公开(公告)号：US4525548A

    公开(公告)日：1985-06-25

    申请号：US406435

    申请日：1982-08-09

    Applicant: Kunimichi Kubo ,  Mamoru Yoshikawa ,  Motokazu Watanabe ,  Yasunosuke Miyazaki ,  Mituji Miyoshi

    Inventor： Kunimichi Kubo ,  Mamoru Yoshikawa ,  Motokazu Watanabe ,  Yasunosuke Miyazaki ,  Mituji Miyoshi

    IPC: B01F7/04 ,  B01J8/10 ,  B01J8/38 ,  C08F2/34 ,  C08F10/00

    CPC classification number: B01J8/38 ,  B01F7/04 ,  B01J8/10 ,  C08F10/00 ,  B01J2219/182 ,  Y10S526/901

    Abstract: Provided is a method for vapor phase polymerization of olefins. An olefin gas is fed into a horizontal cylindrical vessel having a lower curved surface corresponding to 30 to 180 degrees of the circumference of the vessel and extending substantially the length of the vessel formed by a perforated plate having a multiplicity of holes spaced at intervals in the range of from 0.5 to 50 mm, through said plate from an olefin feed chamber mounted below and covering the plate. A polymer catalyst is fed into the horizontal cylindrical vessel through a polymerization catalyst inlet port located in a portion of the vessel other than the lower curved surface formed by the perforated plate. The olefin is reacted in the presence of a catalyst with agitation to form polymer. Unreacted olefin is removed through a discharge port located in a portion of the vessel other than the lower curved surface formed by the perforated plate. Polymer is removed through an outlet port located in a portion of the vessel other than the lower curved surface formed by the perforated plate.

    Abstract translation: 提供了一种烯烃气相聚合方法。 将烯烃气体进料到具有对应于容器圆周的30至180度的较低弯曲表面的水平圆柱形容器中，并且基本上延伸由多孔板形成的容器的长度，所述多孔板具有多个孔， 范围为0.5至50mm，通过所述板从安装在下方并覆盖板的烯烃进料室。 聚合物催化剂通过聚合催化剂入口进入水平圆筒形容器中，所述聚合催化剂入口位于容器的除多孔板形成的下弯曲表面之外的部分中。 烯烃在催化剂存在下与搅拌反应形成聚合物。 未反应的烯烃通过位于容器的除多孔板形成的下弯曲表面以外的排出口除去。 聚合物通过位于容器的除多孔板形成的下弯曲表面以外的一部分的出口除去。

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