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    • 47. 发明公开
    • INCREASED POLYMER MELT FLOW RATIO VIA FEED OF A SUPPORTED CATALYST SATURATED WITH A SELECTED LIQUID AGENT
    • 与选定的流动资金FEED ONE增强聚合物熔体流动比率支饱和催化剂
    • EP2872539A1
    • 2015-05-20
    • EP13734881.9
    • 2013-06-14
    • Univation Technologies, LLC
    • HUSSEIN, F., DavidZILKER, Daniel, P.CANN, Kevin, J.
    • C08F210/02C08F2/34C08F4/64
    • C08F210/16C08F4/65912C08F4/65916C08F4/65925C08F210/14C08F2500/12
    • A process for the production of ethylene alpha-olefin copolymers is disclosed. The process may include feeding a catalyst system comprising a supported metallocene, such as a hafnocene, having pores saturated with a selected liquid agent, to a gas phase polymerization reactor. Ethylene and an alpha-olefin may then be contacted with the supported metallocene in the gas phase polymerization reactor to produce an ethylene alpha-olefin copolymer. The copolymer may have a density of less than 0.93 g/cm3, a melt index (I2) of less than 2 dg/min, and a melt flow ratio (I21/I2) of at least 28. To advantageously result in desired effects on catalyst properties and/or polymer properties, the liquid agent may be selected to advantageously manipulate catalyst temperature profiles and/or catalyst-monomer interaction during an initial heating period when the catalyst is first introduced to the reactor.
    • 一种生产乙烯-α-烯烃共聚物的过程游离缺失盘。 该方法可包括供给催化剂体系,包含负载的茂金属,检查作为铪茂,其具有与所选择的液体剂饱和毛孔,气相聚合反应器。 乙烯和α-烯烃然后可以与在气相聚合反应器中以生产乙烯与α-烯烃共聚物的负载型金属茂接触。 该共聚物可具有小于0.93克/立方厘米,熔体小于2分克/分钟指数(I 2)的密度,和至少28的熔体流动比率(I 21 / I 2),以有利地产生希望的效果上 催化剂性能和/或聚合物的性质,液体剂可以选择在初始加热期间,以有利地操纵催化剂温度分布和/或催化剂的单体相互作用当催化剂首先被引入到反应器中。