Supported ziegler-natta catalysts for polyolefin production
    2.
    发明公开
    Supported ziegler-natta catalysts for polyolefin production 失效
    Ziegler-NattageträgerteKatalysatorefürPolyolefin-Herstellung

    公开(公告)号:EP0771820A1

    公开(公告)日:1997-05-07

    申请号:EP95117325.1

    申请日:1995-11-03

    IPC分类号: C08F10/00 C08F4/654

    摘要: Ziegler Natta catalysts for production of polyolefins, particularly polyethylene and copolymers thereof. Catalysts having improved activities are produced in a multi-stage procedure in which a porous supporting material is impregnated with a precursor composition, and then this is further treated one or more times with subpore volumes of secondary solutions of precursor components. Claims to the process for producing the catalysts, and to a process for making polyolefins using the catalysts are also presented.

    摘要翻译: 用于生产聚烯烃的齐格勒纳塔催化剂,特别是聚乙烯及其共聚物。 具有改善的活性的催化剂是在多阶段方法中制备的,其中多孔支撑材料用前体组合物浸渍,然后用次级体积的前体组分的二级溶液进一步处理一次或多次。 还提出了用于生产催化剂的方法的要求,以及使用该催化剂制备聚烯烃的方法。