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    Process for preparing a supported polymerization catalyst using reduced amounts of solvent and polymerization process
    1.
    发明授权
    Process for preparing a supported polymerization catalyst using reduced amounts of solvent and polymerization process 有权
    使用减少量的溶剂和聚合方法制备负载型聚合催化剂的方法

    公开(公告)号：US06852811B1

    公开(公告)日：2005-02-08

    申请号：US09869578

    申请日：1999-12-06

    申请人： Edmund M. Carnahan ,  Ian M. Munro ,  Marc A. Springs

    发明人： Edmund M. Carnahan ,  Ian M. Munro ,  Marc A. Springs

    IPC分类号： C08F4/659 ,  C08F4/6592 ,  C08F210/16 ,  C08F4/52

    CPC分类号： C08F210/16 ,  C08F4/65908 ,  C08F4/6592 ,  C08F4/65927 ,  Y10S526/943 ,  C08F4/65916 ,  C08F210/14 ,  C08F2500/09

    摘要： The subject invention provides a process for preparing an olefin polymerization catalyst wherein a calcined and passivated silica support (support precursor) is sequentially contacted with a first solution of a metal complex or of a cocatalyst, and thereafter with a second solution of the other of the metal complex or the cocatalyst, wherein the second solution is provided in an amount such that 100 percent of the pore volume of the support precursor is not exceeded. Optionally, the compatible solvent of the first and/or second solutions is removed. The subject invention further provides a process for polymerizing one or more α-olefins in the presence of the olefin polymerization catalyst prepared by the process of the invention.

    摘要翻译： 本发明提供了一种制备烯烃聚合催化剂的方法，其中煅烧和钝化的二氧化硅载体（载体前体）依次与金属络合物或助催化剂的第一溶液接触，然后与另一种 金属络合物或助催化剂，其中提供的第二溶液的量使得不超过载体前体的100％孔体积。 任选地，除去第一和/或第二溶液的相容溶剂。 本发明还提供了在通过本发明的方法制备的烯烃聚合催化剂存在下聚合一种或多种α-烯烃的方法。

    Polyethylene films exhibiting low blocking force
    7.
    发明授权
    Polyethylene films exhibiting low blocking force 失效
    聚乙烯薄膜显示出低的阻塞力

    公开(公告)号：US5370940A

    公开(公告)日：1994-12-06

    申请号：US092346

    申请日：1993-07-15

    申请人： Lonnie G. Hazlitt ,  Pak-Wing S. Chum ,  Seema V. Karande ,  John E. Lastovica, III ,  Ian M. Munro

    发明人： Lonnie G. Hazlitt ,  Pak-Wing S. Chum ,  Seema V. Karande ,  John E. Lastovica, III ,  Ian M. Munro

    IPC分类号： B65D30/02 ,  B32B27/32 ,  B65D65/02 ,  C08F8/00 ,  C08F10/02 ,  C08F297/08 ,  C08J5/18 ,  C08L23/00 ,  C08L23/04 ,  C08L23/08 ,  C08L23/18

    CPC分类号： C08J5/18 ,  C08F297/08 ,  C08L23/0815 ,  C08J2323/08 ,  C08L2205/02 ,  Y10T428/1334 ,  Y10T428/1345 ,  Y10T428/31913

    摘要： Film having good blocking properties and low coefficient of friction is prepared without the presence of antiblock additives from certain thermoplastic ethylene interpolymer products. The thermoplastic ethylene interpolymer products have a density of about 0,935 g/ml or less, a melt flow ratio, I.sub.10/ I.sub.2, of at least about 8, and at least about 0.5 percent by weight of the interpolymer product has a weight average molecular weight of at least about 1,000,000 grams/mole. The interpolymer products are a blend or composite of ethylene polymers or copolymers and comprise at least a first interpolymer of ethylene with at least one alpha-olefin monomer. Preferably, the interpolymer products have a melt index, I.sub.2, of from about 0.1 to about 4 grams/10 minutes. The interpolymer products can be made using discrete polymer blends, or preferably, in a multiple reactor sequence. Blown film made from the interpolymer products is especially useful in grocery sack applications.

    摘要翻译： 制备具有良好阻隔性能和低摩擦系数的膜，而不存在来自某些热塑性乙烯互聚物产物的防粘剂添加剂。 热塑性乙烯互聚物产物的密度为约935g / ml或更低，熔体流动比I10 / I2为至少约8重量％，至少约0.5重量％的互聚物产物具有重均分子量 至少约1,000,000克/摩尔。 互聚物产物是乙烯聚合物或共聚物的共混物或复合物，并且包含至少一种乙烯与至少一种α-烯烃单体的第一互聚物。 优选地，互聚物产物的熔体指数I 2为约0.1至约4克/ 10分钟。 互聚物产物可以使用离散聚合物共混物制备，或者优选在多反应器序列中制备。 由互聚物产品制成的吹膜在杂货袋应用中特别有用。

    Polyethylene films exhibiting low blocking force
    8.
    发明授权
    Polyethylene films exhibiting low blocking force 失效
    聚乙烯薄膜显示出低的阻塞力

    公开(公告)号：US5250612A

    公开(公告)日：1993-10-05

    申请号：US773375

    申请日：1991-10-07

    申请人： Lonnie G. Hazlitt ,  Pak-Wing S. Chum ,  Seema V. Karande ,  John E. Lastovica, III ,  Ian M. Munro

    发明人： Lonnie G. Hazlitt ,  Pak-Wing S. Chum ,  Seema V. Karande ,  John E. Lastovica, III ,  Ian M. Munro

    IPC分类号： B65D30/02 ,  B32B27/32 ,  B65D65/02 ,  C08F8/00 ,  C08F10/02 ,  C08F297/08 ,  C08J5/18 ,  C08L23/00 ,  C08L23/04 ,  C08L23/08 ,  C08L23/20

    CPC分类号： C08J5/18 ,  C08F297/08 ,  C08L23/0815 ,  C08J2323/08 ,  C08L2205/02 ,  Y10T428/1334 ,  Y10T428/1345 ,  Y10T428/31913

    摘要： Film having good blocking properties and low coefficient of friction is prepared without the presence of antiblock additives from certain thermoplastic ethylene interpolymer products. The thermoplastic ethylene interpolymer products have a density of about 0.935 g/ml or less, a melt flow ratio. I.sub.10 I.sub.2, of at least about 8, and at least about 0.5 percent by weight of the interpolymer product has a weight average molecular weight of at least about 1,000,000 grams/mole. The interpolymer products are a blend or composite of ethylene polymers or copolymers and comprise at least a first interpolymer of ethylene with at least one alpha-olefin monomer. Preferably, the interpolymer products have a melt index, I.sub.2, of from about 0.1 to about 4 grams/10 minutes. The interpolymer products can be made using discrete polymer blends, or preferably, in a multiple reactor sequence. Blown film made from the interpolymer products is especially useful in grocery sack applications.

    摘要翻译： 制备具有良好阻隔性能和低摩擦系数的膜，而不存在来自某些热塑性乙烯互聚物产物的防粘剂添加剂。 热塑性乙烯互聚物产物的密度为约0.935g / ml或更小，熔体流动比。 至少约8重量％，至少约0.5重量％的互聚物产物的重均分子量至少约为1,000,000克/摩尔。 互聚物产物是乙烯聚合物或共聚物的共混物或复合物，并且包含至少一种乙烯与至少一种α-烯烃单体的第一互聚物。 优选地，互聚物产物的熔体指数I 2为约0.1至约4克/ 10分钟。 互聚物产物可以使用离散聚合物共混物制备，或者优选在多反应器序列中制备。 由互聚物产品制成的吹膜在杂货袋应用中特别有用。