Catalyst system and its use in olefin polymerization
    11.
    发明授权
    Catalyst system and its use in olefin polymerization 有权
    催化剂体系及其在烯烃聚合中的应用

    公开(公告)号:US06605563B1

    公开(公告)日:2003-08-12

    申请号:US10359933

    申请日:2003-02-06

    IPC分类号: C08F464

    摘要: A polymerization catalyst system and a method for preparing the catalyst system is disclosed. The catalyst system includes a bulky ligand metallocene catalyst compound, preferably containing a single cyclopentadienyl or substituted cyclopentadienyl-type ring system, a Group 13 element containing first modifier, and a cycloalkadiene second modifier. The present invention also provides a process for polymerizing olefin(s) utilizing the catalyst systems described herein.

    摘要翻译: 公开了聚合催化剂体系和制备催化剂体系的方法。 催化剂体系包括体积庞大的配位金属茂催化剂化合物,优选含有单个环戊二烯基或取代的环戊二烯基型环系,含有第13族元素的第一改性剂和环二烯二烯改性剂。 本发明还提供了利用本文所述的催化剂体系聚合烯烃的方法。

    Bimetallic catalyst, method of polymerization and bimodal polyolefins therefrom
    16.
    发明申请
    Bimetallic catalyst, method of polymerization and bimodal polyolefins therefrom 失效
    双金属催化剂,聚合方法和双峰聚烯烃

    公开(公告)号:US20070123414A1

    公开(公告)日:2007-05-31

    申请号:US11641254

    申请日:2006-12-19

    IPC分类号: C08F4/02 C08F4/44

    摘要: Bimetallic catalysts, and methods of producing a bimetallic catalyst comprising a modified Ziegler-Natta catalyst and a metallocene are provided, in one embodiment the method including combining: (a) a Ziegler-Natta catalyst comprising a Group 4, 5 or 6 metal halide and/or oxide, optionally including a magnesium compound, with (b) a modifier compound (“modifier”), wherein the modifier compound is a Group 13 alkyl compound, to form a modified Ziegler-Natta catalyst. Also provided is a method of olefin polymerization using the bimetallic catalyst of the invention. The modified Ziegler-Natta catalyst is preferably non-activated, that is, it is unreactive towards olefin polymerization alone. In one embodiment, the molar ratio of the Group 13 metal (of the modifier) to the Group 4, 5 or 6 metal halide and/or oxide is less than 10:1 in one embodiment. The bimetallic catalysts of the present invention are useful in producing bimodal polymers, particularly bimodal polyethylene, having a Polydispersity (Mw/Mn) of from 12 to 50. These bimodal polyolefins are useful in such articles as pipes and films.

    摘要翻译: 提供双金属催化剂和制备包含改性齐格勒 - 纳塔催化剂和茂金属的双金属催化剂的方法,在一个实施方案中,该方法包括组合:(a)包含第4,5或6族金属卤化物的齐格勒 - 纳塔催化剂和 /或氧化物,任选地包括镁化合物,与(b)改性剂化合物(“改性剂”),其中改性剂化合物是13族烷基化合物,以形成改性的齐格勒 - 纳塔催化剂。 还提供了使用本发明的双金属催化剂的烯烃聚合方法。 改性的齐格勒 - 纳塔催化剂优选是非活化的,即单独对烯烃聚合是不反应的。 在一个实施方案中,在一个实施方案中,第13族金属(改性剂)与第4,5或6族金属卤化物和/或氧化物的摩尔比小于10:1。 本发明的双金属催化剂可用于生产具有多分散性(Mw / Mn)为12至50的双峰聚合物,特别是双峰聚乙烯。这些双峰聚烯烃可用于管和薄膜等制品。