PROCESS FOR CONTROLLING THE RELATIVE ACTIVITY OF ACTIVE CENTERS OF CATALYST SYSTEMS COMPRISING AT LEAST ONE LATE TRANSITION METAL CATALYST COMPONENT AND AT LEAST ONE ZIEGLER CATALYST COMPONENT
    4.
    发明申请
    PROCESS FOR CONTROLLING THE RELATIVE ACTIVITY OF ACTIVE CENTERS OF CATALYST SYSTEMS COMPRISING AT LEAST ONE LATE TRANSITION METAL CATALYST COMPONENT AND AT LEAST ONE ZIEGLER CATALYST COMPONENT 审中-公开
    用于控制包含至少一次过渡金属催化剂组分和至少一种齐格勒催化剂组分的催化剂体系的活性中心的相对活性的方法

    公开(公告)号:US20130274427A1

    公开(公告)日:2013-10-17

    申请号:US13996387

    申请日:2011-12-19

    IPC分类号: C08F210/02

    摘要: A method of controlling the polymer composition of an ethylene copolymer in a process for preparing ethylene copolymers by copolymerizing ethylene and at least one other olefin in the presence of a polymerization catalyst system comprising at least one late transition metal catalyst component (A) having a tridentate ligand which bears at least two ortho, ortho′-disubstituted aryl radicals, at least one Ziegler catalyst component (B), and at least one activating compound (C) by varying the polymerization temperature, a process for copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system comprising utilizing the controlling method, a method for altering the polymer composition of an ethylene copolymer obtained by copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system by varying the polymerization temperature and a method for transitioning from one ethylene copolymer grade to another by using the method for altering the polymer composition.

    摘要翻译: 一种通过在包含至少一种具有三齿的后过渡金属催化剂组分(A)的聚合催化剂体系的存在下共聚乙烯和至少一种其它烯烃来制备乙烯共聚物的方法中的乙烯共聚物的聚合物组成的控制方法, 至少一个齐格勒催化剂组分(B)和至少一种活化化合物(C),其通过改变聚合温度而承载至少两个邻位,邻二取代的芳基,至少一个活化化合物(C) 烯烃在这样的聚合催化剂体系的存在下,包括利用控制方法,通过改变聚合反应,改变通过在这样的聚合催化剂体系的存在下共聚乙烯和至少一种其它烯烃而获得的乙烯共聚物的聚合物组成的方法 温度和从一种乙烯共聚物级转变成肛门的方法 她通过使用改变聚合物组成的方法。