Polymers made with metallocene catalysts, for use in rotomolding and injection molding products
    1.
    发明申请
    Polymers made with metallocene catalysts, for use in rotomolding and injection molding products 有权
    用茂金属催化剂制成的聚合物,用于滚塑和注塑产品

    公开(公告)号:US20080045679A1

    公开(公告)日:2008-02-21

    申请号:US11811015

    申请日:2007-06-07

    IPC分类号: C08F210/02

    摘要: Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index of between 0.7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0.930 g/cc and 0.970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pa·s. Processes to produce these polymers are also disclosed.

    摘要翻译: 公开了通过在气相反应器中使至少一种负载的茂金属催化剂,乙烯和α-烯烃接触而形成的乙烯α-烯烃共聚物。 在一些实施方案中,聚合物可以具有:0.890至0.970g / cc之间的密度; 熔体指数在0.7至200dg / min之间; 熔体指数比小于30; ESCR值大于1000小时; 和大于75,000psi的1%割线模量。 在其它实施方案中,聚合物可以具有:0.930g / cc和0.970g / cc之间的密度; 熔体指数在10dg / min到200dg / min之间; 熔体指数比在10和25之间; 在螺旋流动试验中部分重量大于3g,部分长度大于38cm; 零剪切粘度小于150Pa·s。 还公开了生产这些聚合物的方法。

    Polymers made with metallocene catalysts, for use in rotomolding and injection molding products
    2.
    发明授权
    Polymers made with metallocene catalysts, for use in rotomolding and injection molding products 有权
    用茂金属催化剂制成的聚合物,用于滚塑和注塑产品

    公开(公告)号:US08067518B2

    公开(公告)日:2011-11-29

    申请号:US11811015

    申请日:2007-06-07

    摘要: Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index of between 0.7 and 200 dg/min; a melt index ratio of less than 30; an ESCR value of greater than 1000 hours; and a 1% secant modulus of greater than 75,000 psi. In other embodiments, the polymer may have: a density of between 0.930 g/cc and 0.970 g/cc; a melt index of between 10 dg/min and 200 dg/min; a melt index ratio of between 10 and 25; a part weight of greater than 3 g and a part length of greater than 38 cm in a spiral flow test, and; a zero shear viscosity of less than 150 Pa·s. Processes to produce these polymers are also disclosed.

    摘要翻译: 公开了通过在气相反应器中使至少一种负载的茂金属催化剂,乙烯和α-烯烃接触而形成的乙烯α-烯烃共聚物。 在一些实施方案中,聚合物可以具有:0.890至0.970g / cc之间的密度; 熔体指数在0.7至200dg / min之间; 熔体指数比小于30; ESCR值大于1000小时; 和大于75,000psi的1%割线模量。 在其它实施方案中,聚合物可以具有:0.930g / cc和0.970g / cc之间的密度; 熔体指数在10dg / min到200dg / min之间; 熔体指数比在10和25之间; 在螺旋流动试验中部分重量大于3g,部分长度大于38cm; 零剪切粘度小于150Pa·s。 还公开了生产这些聚合物的方法。

    Methods of Controlling Polymer Properties
    5.
    发明申请
    Methods of Controlling Polymer Properties 有权
    控制聚合物性能的方法

    公开(公告)号:US20120041164A1

    公开(公告)日:2012-02-16

    申请号:US13276693

    申请日:2011-10-19

    IPC分类号: C08F230/04

    摘要: The invention generally provides for methods for controlling polymer properties. In particular, invention provides for methods for controlling the comonomer composition distribution of polyolefins such as ethylene alpha-olefin copolymers by altering at least one or more of the following parameters: the molar ratio of hydrogen to ethylene, the molar ratio of comonomer to ethylene, the partial pressure of ethylene, and the reactor temperature without substantially changing the density and/or the melt index of the copolymer.

    摘要翻译: 本发明通常提供了控制聚合物性质的方法。 特别地,本发明提供了通过改变至少一个或多个以下参数来控制聚烯烃如乙烯α-烯烃共聚物的共聚单体组成分布的方法:氢与乙烯的摩尔比,共聚单体与乙烯的摩尔比, 乙烯的分压和反应器温度,而基本上不改变共聚物的密度和/或熔体指数。

    Ethylene alpha olefin copolymers and polymerization processes for making the same
    6.
    发明授权
    Ethylene alpha olefin copolymers and polymerization processes for making the same 有权
    乙烯-α烯烃共聚物和制备相同的聚合方法

    公开(公告)号:US08378043B2

    公开(公告)日:2013-02-19

    申请号:US12968996

    申请日:2010-12-15

    摘要: A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.

    摘要翻译: 公开了一种生产乙烯α-烯烃共聚物的方法。 该方法包括通过在至少一个气相反应器中在0.7至70巴的反应器压力下将乙烯和至少一种α-烯烃与金属茂催化剂接触,使聚合乙烯和至少一种α-烯烃,反应器温度为 从20℃至150℃,以形成乙烯α-烯烃共聚物。 当根据ASTM 1693 / B在10%Igepal中测量时,所得乙烯α-烯烃共聚物的密度可以为0.927g / cc或更高,环境应力开裂抗性(ESCR)为500小时以上。

    Ethylene-alpha olefin copolymers and polymerization processes for making the same
    8.
    发明授权
    Ethylene-alpha olefin copolymers and polymerization processes for making the same 有权
    乙烯-α-烯烃共聚物和制备相同的聚合方法

    公开(公告)号:US07875690B2

    公开(公告)日:2011-01-25

    申请号:US11821696

    申请日:2007-06-25

    摘要: A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.

    摘要翻译: 公开了一种生产乙烯α-烯烃共聚物的方法。 该方法包括通过在至少一个气相反应器中在0.7至70巴的反应器压力下将乙烯和至少一种α-烯烃与金属茂催化剂接触,使聚合乙烯和至少一种α-烯烃,反应器温度为 从20℃至150℃,以形成乙烯α-烯烃共聚物。 当根据ASTM 1693 / B在10%Igepal中测量时,所得乙烯α-烯烃共聚物的密度可以为0.927g / cc或更高,环境应力开裂抗性(ESCR)为500小时以上。