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    CATALYST AND PREPARATION THEREOF
    7.
    发明公开
    CATALYST AND PREPARATION THEREOF 审中-公开

    公开(公告)号：EP3875503A1

    公开(公告)日：2021-09-08

    申请号：EP20160459.2

    申请日：2020-03-02

    申请人： Borealis AG

    发明人： Schröder, Frank ,  Leinonen, Timo ,  Denifl, Peter ,  Kaltenbacher, Sascha ,  Hagemann, Berhard

    IPC分类号： C08F110/06 ,  C08F4/646

    摘要： The present invention relates to a process for producing a solid Ziegler-Natta catalyst component in the form of solid particles having a median particle size (D50 vol ) of 5 to 500 µm and the process comprising steps
    I. providing a solution of a Group 2 metal dihalide (IUPAC, Nomenclature of Inorganic Chemistry, 2005) by dissolving a solid Group 2 metal dihalide in an alcohol mixture comprising at least a monohydric alcohol (A1) of formula ROH, where R is selected from a hydrocarbyl group of 3 to 16 C atoms and an alcohol (A2) comprising in addition to the hydroxyl group another oxygen containing functional group not being a hydroxyl group,
    II. contacting the solution of the Group 2 metal dihalide of step I with a compound in a liquid form of a transition metal of Group 4 to 10, or of a lanthanide or actinide, preferably a transition metal of Group 4 to 6 of Periodic Table (IUPAC, Nomenclature of Inorganic Chemistry, 2005), and
    III. recovering the solid catalyst component,
    wherein the amount of Group 2 metal originating from Group 2 metal dihalide constitutes 100 % of the whole amount of the Group 2 metal used in the process for producing the solid Ziegler-Natta catalyst component.