Polymers made with metallocene catalysts, for use in rotomolding and injection molding products
    10.
    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。