利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

15 条记录 (耗时 0.039 秒)

    Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst
    5.
    发明授权
    Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst 有权
    使用烷基锂化合物作为助催化剂的聚合催化剂体系和方法

    公开(公告)号：US07022781B2

    公开(公告)日：2006-04-04

    申请号：US11174874

    申请日：2005-07-05

    申请人： Max P. McDaniel ,  Joseph S. Shveima ,  Elizabeth A. Benham ,  Rolf L. Geerts ,  James L. Smith

    发明人： Max P. McDaniel ,  Joseph S. Shveima ,  Elizabeth A. Benham ,  Rolf L. Geerts ,  James L. Smith

    IPC分类号： C08F4/02 ,  C08F4/646 ,  C08F4/69

    CPC分类号： B01J31/128 ,  B01J21/063 ,  B01J21/066 ,  B01J23/26 ,  B01J31/122 ,  B01J31/14 ,  B01J35/0006 ,  C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F4/69 ,  C08F2500/12 ,  C08F2500/05 ,  C08F4/6341 ,  C08F2500/07 ,  C08F210/14

    摘要： A catalyst system composition comprising a chromium compound supported on a silica-titania support, wherein said catalyst system has been reduced with carbon monoxide, and a cocatalyst selected from the group consisting of i) alkyl lithium compounds, ii) dialkyl aluminum alkoxides in combination with at least one metal alkyl selected from the group consisting of alkyl zinc compounds, alkyl aluminum compounds, alkyl boron compounds, and mixtures thereof and iii) mixtures thereof can be used to polymerize olefins to produce a low density polymer with a decreased melt index and/or high load melt index. This catalyst system also can be used with a Ziegler-Natta catalyst system to polymerize olefins. Polymerization processes using these catalyst system compositions are also provided. Polymers resulting from polymerization processes using the inventive catalyst and cocatalyst systems have a decreased high load melt index, decreased melt index, increased fluff bulk density, and are useful as components to make bi-modal molecular weight resins for film and/or blow molding applications.

    摘要翻译： 一种催化剂体系组合物，其包含负载在二氧化硅 - 二氧化钛载体上的铬化合物，其中所述催化剂体系已用一氧化碳还原，并且选择由以下组成的组的助催化剂：i）烷基锂化合物，ii）二烷基铝醇盐与 选自烷基锌化合物，烷基铝化合物，烷基硼化合物及其混合物中的至少一种金属烷基酯和iii）其混合物可用于聚合烯烃以产生具有降低的熔体指数的低密度聚合物和/ 或高负荷熔体指数。 该催化剂体系也可与齐格勒 - 纳塔催化剂体系一起使用以聚合烯烃。 还提供了使用这些催化剂体系组合物的聚合方法。 使用本发明的催化剂和助催化剂体系的聚合方法产生的聚合物具有降低的高负荷熔体指数，降低的熔体指数，增加的绒毛堆积密度，并且可用作制备用于膜和/或吹塑应用的双模态分子量树脂的组分 。

    Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst
    6.
    发明授权
    Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst 失效
    使用烷基锂化合物作为助催化剂的聚合催化剂体系和方法

    公开(公告)号：US06828268B1

    公开(公告)日：2004-12-07

    申请号：US09435113

    申请日：1999-11-05

    申请人： Max P. McDaniel ,  Joseph S. Shveima ,  Elizabeth A. Benham ,  Rolf L. Geerts ,  James L. Smith

    发明人： Max P. McDaniel ,  Joseph S. Shveima ,  Elizabeth A. Benham ,  Rolf L. Geerts ,  James L. Smith

    IPC分类号： B01J3100

    CPC分类号： B01J31/128 ,  B01J21/063 ,  B01J21/066 ,  B01J23/26 ,  B01J31/122 ,  B01J31/14 ,  B01J35/0006 ,  C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F4/69 ,  C08F2500/12 ,  C08F2500/05 ,  C08F4/6341 ,  C08F2500/07 ,  C08F210/14

    摘要： A catalyst system composition comprising a chromium compound supported on a silica-titania support, wherein said catalyst system has been reduced with carbon monoxide, and a cocatalyst selected from the group consisting of i) alkyl lithium compounds, ii) dialkyl aluminum alkoxides in combination with at least one metal alkyl selected from the group consisting of alkyl zinc compounds, alkyl aluminum compounds, alkyl boron compounds, and mixtures thereof and iii) mixtures thereof can be used to polymerize olefins to produce a low density polymer with a decreased melt index and/or high load melt index. This catalyst system also can be used with a Ziegler-Natta catalyst system to polymerize olefins. Polymerization processes using these catalyst system compositions are also provided. Polymers resulting from polymerization processes using the inventive catalyst and cocatalyst systems have a decreased high load melt index, decreased melt index, increased fluff bulk density, and are useful as components to make bi-modal molecular weight resins for film and/or blow molding applications.

    摘要翻译： 一种催化剂体系组合物，其包含负载在二氧化硅 - 二氧化钛载体上的铬化合物，其中所述催化剂体系已用一氧化碳还原，并且选择由以下组成的组的助催化剂：i）烷基锂化合物，ii）二烷基铝醇盐与 选自烷基锌化合物，烷基铝化合物，烷基硼化合物及其混合物中的至少一种金属烷基酯和iii）其混合物可用于聚合烯烃以产生具有降低的熔体指数的低密度聚合物和/ 或高负荷熔体指数。 该催化剂体系也可与齐格勒 - 纳塔催化剂体系一起使用以聚合烯烃。 还提供了使用这些催化剂体系组合物的聚合方法。 由使用本发明的催化剂和助催化剂体系的聚合方法产生的聚合物具有降低的高负荷熔体指数，降低的熔体指数，增加的绒毛堆积密度，并且可用作制备用于膜和/或吹塑应用的双模态分子量树脂的组分 。

    Catalyst system and process
    8.
    发明授权
    Catalyst system and process 失效
    催化剂系统和工艺

    公开(公告)号：US5284926A

    公开(公告)日：1994-02-08

    申请号：US950536

    申请日：1992-09-25

    申请人： Elizabeth A. Benham ,  Joseph S. Shveima ,  Max P. McDaniel

    发明人： Elizabeth A. Benham ,  Joseph S. Shveima ,  Max P. McDaniel

    IPC分类号： C08F4/24 ,  C08F10/00 ,  C08F4/78 ,  C08F2/38

    CPC分类号： C08F10/00 ,  Y10S526/905

    摘要： An ethylene polymerization catalyst system is provided. This catalyst system is produced by the process comprising forming an activated and reduced composition that is substantially free of titania and that comprises a fluorine compound, a chromium compound, and a catalyst support that consists essentially of silica.An ethylene polymerization process is provided. This process uses the ethylene polymerization catalyst system above. This catalyst system is contacted with ethylene, in the presence of hydrogen and trialkylaluminum, under polymerization conditions, to produce a polyethylene resin.

    摘要翻译： 提供乙烯聚合催化剂体系。 该催化剂体系通过包括形成基本上不含二氧化钛的活化和还原的组合物的方法制备，并且包含氟化合物，铬化合物和基本上由二氧化硅组成的催化剂载体。 提供乙烯聚合方法。 该方法使用上述乙烯聚合催化剂体系。 该催化剂体系在氢气和三烷基铝的存在下，在聚合条件下与乙烯接触，以制备聚乙烯树脂。

    Ethylene copolymerization process
    9.
    发明授权
    Ethylene copolymerization process 失效
    乙烯共聚方法

    公开(公告)号：US5641842A

    公开(公告)日：1997-06-24

    申请号：US471894

    申请日：1995-06-07

    申请人： Max P. McDaniel ,  Rickey D. Badley ,  Bruce E. Kreischer ,  Joseph S. Shveima

    发明人： Max P. McDaniel ,  Rickey D. Badley ,  Bruce E. Kreischer ,  Joseph S. Shveima

    IPC分类号： C08F4/22 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F4/24

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  Y10S526/908

    摘要： A process is provided comprising copolymerizing, under copolymerizing conditions, ethylene with one or more alpha-olefins, using a catalyst system, where said catalyst system has been sized, to produce a lower-density-copolymer, where said lower-density-copolymer has a density lower than a similar copolymer produced by copolymerizing, under said copolymerizing conditions, ethylene with said one or more alpha-olefins, using said catalyst system, where said catalyst system has not been sized, where said catalyst system that has been sized has had substantially all particles removed that produce, under said copolymerizing conditions, a higher-density-copolymer, where said higher-density-copolymer has a density higher than said similar copolymer.

    摘要翻译： 提供了一种方法，包括在共聚合条件下使乙烯与一种或多种α-烯烃共聚，使用催化剂体系，其中所述催化剂体系的尺寸被制成低密度共聚物，其中所述低密度共聚物具有 通过使用所述催化剂体系在所述共聚条件下共聚乙烯和所述一种或多种α-烯烃，其中所述催化剂体系未被大小化，其中所述催化剂体系的尺寸已经达到规定尺寸 基本上所有去除的颗粒在所述共聚条件下产生高密度共聚物，其中所述高密度共聚物的密度高于所述类似的共聚物。