Bimetallic catalyst, method of polymerization and bimodal polyolefins therefrom
    21.
    发明授权
    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:US08222176B2

    公开(公告)日:2012-07-17

    申请号:US11641254

    申请日:2006-12-19

    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。

    Supported metallocene-alkyl catalyst composition
    27.
    发明申请
    Supported metallocene-alkyl catalyst composition 有权
    负载的茂金属 - 烷基催化剂组合物

    公开(公告)号:US20070027027A1

    公开(公告)日:2007-02-01

    申请号:US11192935

    申请日:2005-07-29

    IPC分类号: B01J31/00 C08F4/44

    摘要: A supported catalyst composition having improved flow properties is disclosed comprising an alkylalumoxane, a metallocene-alkyl an inorganic oxide support having an average particle size of from 0.1 to 50 μm and calcined at a temperature greater than 600° C., and optionally an antifoulant agent and. In one embodiment, the metallocene-alkyl is a Group 4, 5 or 6 metallocene-alkyl, and in another embodiment is a hafnocene-alkyl. Also disclosed is a method of polymerization using such a supported catalyst composition.

    摘要翻译: 公开了具有改进的流动性质的负载型催化剂组合物,其包含烷基铝氧烷,茂金属 - 烷基和平均粒度为0.1-50μm的无机氧化物载体,并且在大于600℃的温度下煅烧,以及任选的防污剂 和。 在一个实施方案中,茂金属 - 烷基是第4,5或6族茂金属 - 烷基,在另一个实施方案中是茂金属 - 烷基。 还公开了使用这种负载型催化剂组合物的聚合方法。