Ethylene interpolymer polymerizations
    2.
    发明授权
    Ethylene interpolymer polymerizations 失效
    乙烯互聚物聚合

    公开(公告)号:US06538070B1

    公开(公告)日:2003-03-25

    申请号:US08858664

    申请日:1997-05-19

    IPC分类号: C08L2308

    摘要: A new process of interpolymerizing ethylene interpolymer products having improved properties, such as increased onset of crystallization temperature, is disclosed. Preferably, the process comprises interpolymerizing a first homogeneous ethylene/alpha-olefin interpolymer and at least one second homogeneous ethylene/alpha-olefin interpolymer using at least two constrained geometry catalysts having different reactivities such that the first ethylene/alpha-olefin interpolymer has a narrow molecular weight distribution (NMWD) with a very high comonomer content and relatively high molecular weight and the second ethylene/alpha-olefin interpolymer has a NMWD with a low comonomer content and a molecular weight lower than that of the first interpolymer. The resultant first homogeneous interpolymer is combined with the resultant second homogeneous interpolymer in appropriate weight ratios resulting in the desired finished polymer structure. The first interpolymer and the second interpolymer can be polymerized in a single reactor or they can be polymerized in separate reactors operated in parallel or series.

    摘要翻译: 公开了具有改进性能的乙烯互聚物产物的新聚合方法,例如结晶温度的开始增加。 优选地,该方法包括使用具有不同反应性的至少两种约束几何催化剂使第一均匀乙烯/α-烯烃互聚物和至少一种第二均相乙烯/α-烯烃互聚物互聚,使得第一乙烯/α-烯烃互聚物具有窄的 具有非常高的共聚单体含量和相对高分子量的分子量分布(NMWD),第二乙烯/α-烯烃互聚物具有低共聚单体含量低于第一互聚物的分子量的NMWD。 将所得第一均匀互聚物与所得的第二均相互聚物以适当的重量比组合,得到所需的最终聚合物结构。 第一互聚物和第二互聚物可以在单个反应器中聚合,或者它们可以在并行或串联操作的分离的反应器中聚合。

    Ethylene interpolymer polymerizations
    3.
    发明授权
    Ethylene interpolymer polymerizations 失效
    乙烯互聚物聚合

    公开(公告)号:US06916883B2

    公开(公告)日:2005-07-12

    申请号:US10931821

    申请日:2004-09-01

    摘要: A new process of interpolymerizing ethylene interpolymer products having improved properties, such as increased onset of crystallization temperature, is disclosed. Preferably, the process comprises interpolymerizing a first homogeneous ethylene/alpha-olefin interpolymer and at least one second homogeneous ethylene/alpha-olefin interpolymer using at least two constrained geometry catalysts having different reactivities such that the first ethylene/alpha-olefin interpolymer has a narrow molecular weight distribution (NMWD) with a very high comonomer content and relatively high molecular weight and the second ethylene/alpha-olefin interpolymer has a NMWD with a low comonomer content and a molecular weight lower than that of the first interpolymer. The resultant first homogeneous interpolymer is combined with the resultant second homogeneous interpolymer in appropriate weight ratios resulting in the desired finished polymer structure. The first interpolymer and the second interpolymer can be polymerized in a single reactor or they can be polymerized in separate reactors operated in parallel or series.

    摘要翻译: 公开了具有改进性能的乙烯互聚物产物的新聚合方法,例如结晶温度的开始增加。 优选地,该方法包括使用具有不同反应性的至少两种约束几何催化剂使第一均匀乙烯/α-烯烃互聚物和至少一种第二均相乙烯/α-烯烃互聚物互聚,使得第一乙烯/α-烯烃互聚物具有窄的 具有非常高的共聚单体含量和相对高分子量的分子量分布(NMWD),第二乙烯/α-烯烃互聚物具有低共聚单体含量低于第一互聚物的分子量的NMWD。 将所得第一均匀互聚物与所得的第二均相互聚物以适当的重量比组合,得到所需的最终聚合物结构。 第一互聚物和第二互聚物可以在单个反应器中聚合,或者它们可以在并行或串联操作的分离的反应器中聚合。

    Ethylene interpolymerizations
    5.
    发明授权
    Ethylene interpolymerizations 失效
    乙烯互聚

    公开(公告)号:US5869575A

    公开(公告)日:1999-02-09

    申请号:US980695

    申请日:1997-11-24

    摘要: Processes for polymerizing ethylene/.alpha.-olefin interpolymer compositions are disclosed. The interpolymer compositions have a controlled composition and a controlled molecular weight distribution. The processes utilize a highly-efficient homogeneous catalyst composition in at least one reactor to produce a first interpolymer having a narrow composition distribution and a narrow molecular weight distribution, and a highly-efficient heterogeneous Ziegler catalyst in at least one other reactor. The reactors can be operated sequentially or separately, depending upon the desired product. The novel compositions have good optical properties (e.g., clarity and haze) and good physical properties (e.g., modulus, yield strength, toughness and tear). Useful products which can be formed from these compositions include film, molded articles and fiber.

    摘要翻译: 公开了用于聚合乙烯/α-烯烃互聚物组合物的方法。 互聚物组合物具有受控的组成和受控的分子量分布。 该方法在至少一个反应器中使用高效均相催化剂组合物,以在至少一个其它反应器中产生具有窄组成分布和窄分子量分布的第一互聚物和高效异构齐格勒催化剂。 反应器可以顺序地或分开地操作,这取决于所需的产物。 该新型组合物具有良好的光学性能(例如透明度和雾度)和良好的物理性能(例如模量,屈服强度,韧性和撕裂)。 可以由这些组合物形成的有用的产品包括膜,模制品和纤维。

    Supported catalyst complexes for olefin in polymerization
    7.
    发明授权
    Supported catalyst complexes for olefin in polymerization 失效
    用于聚合中烯烃的负载催化剂络合物

    公开(公告)号:US5763547A

    公开(公告)日:1998-06-09

    申请号:US626303

    申请日:1996-04-01

    摘要: A supported catalyst composition comprising a complex of a Group 4 metal cyclopentadienyl derivative reacted with silica treated with an aluminoxane demonstrates improved reactivity, especially for incorporating long chain alpha-olefins and also shows improved resistance to catalyst poisoning. The supported catalyst composition is adapted to produce homogeneous polymers, copolymers, terpolymers, etc., for example, homogeneous polyethylene, homogeneous poly(ethylene-octene) copolymers and the like. The invention further includes the process of preparing the supported catalyst compositions and a process for preparing olefinic polymers using these catalyst compositions.

    摘要翻译: 包含与铝氧烷处理的二氧化硅反应的第4族金属环戊二烯基衍生物的配合物的负载催化剂组合物表现出改善的反应性,特别是用于引入长链α-烯烃并且还显示出改善的对催化剂中毒的抵抗性。 支持的催化剂组合物适于制备均匀的聚合物,共聚物,三元共聚物等,例如均匀的聚乙烯,均匀的聚(乙烯 - 辛烯)共聚物等。 本发明还包括制备负载型催化剂组合物的方法和使用这些催化剂组合物制备烯属聚合物的方法。