Multimodal polyethylene obtained with multilayer chromium catalyst
    4.
    发明授权
    Multimodal polyethylene obtained with multilayer chromium catalyst 失效
    用多层铬催化剂得到的多峰聚乙烯

    公开(公告)号:US07851400B2

    公开(公告)日:2010-12-14

    申请号:US11837778

    申请日:2007-08-13

    IPC分类号: B01J21/06 B01J23/26

    摘要: The present invention concerns a catalyst for the production of high density polyethylene, by homopolymerising ethylene or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10 carbon atoms, prepared by the steps of: a) selecting a silica support with a specific surface area larger than 300 m2/g; b) treating the silica support with a titanium compound, in order to introduce titanium into the support, or with an aluminium compound, in order to introduce aluminum into the support; c) either treating the titanated silica support with an aluminum compound, in order to introduce aluminum into the titanated silica support, or treating the aluminated silica support with a titanium compound, in order to introduce titanium into the aluminated silica support; d) depositing a chromium compound on the titanated and aluminated silica support to form a catalyst; e) activating the catalyst of step d) under air in a fluidised bed at a temperature of from 600 to 800° C.

    摘要翻译: 本发明涉及用于生产高密度聚乙烯的催化剂,通过均聚乙烯或共聚乙烯和包含3至10个碳原子的α-烯烃共聚单体,其步骤为:a)选择具有比表面积的二氧化硅载体 大于300 m2 / g; b)用钛化合物处理二氧化硅载体,以便将钛引入载体或用铝化合物,以便将铝​​引入载体中; c)用铝化合物处理钛酸二氧化硅载体,以便将铝​​引入钛酸二氧化硅载体中,或用钛化合物处理铝化二氧化硅载体,以便将钛引入到铝化硅载体中; d)在钛酸化和镀铝的二氧化硅载体上沉积铬化合物以形成催化剂; e)在600至800℃的温度下在流化床中在空气下活化步骤d)的催化剂。

    Multimodal polyethylene obtained with multilayer chromium catalyst
    7.
    发明授权
    Multimodal polyethylene obtained with multilayer chromium catalyst 失效
    用多层铬催化剂得到的多峰聚乙烯

    公开(公告)号:US07271122B2

    公开(公告)日:2007-09-18

    申请号:US10297710

    申请日:2001-06-07

    IPC分类号: B01J23/26

    摘要: The present invention concerns a catalyst for the production of high density polyethylene, by homopolymerising ethylene or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10 carbon atoms, prepared by the steps of: a) selecting a silica support with a specific surface area larger than 300 m2/g; b) treating the silica support with a titanium compound, in order to introduce titanium into the support, or with an aluminium compound, in order to introduce aluminium into the support; c) either treating the titanated silica support with an aluminum compound, in order to introduce aluminum into the titanated silica support, or treating the aluminated silica support with a titanium compound, in order to introduce titanium into the aluminated silica support; d) depositing a chromium compound on the titanated and aluminated silica support to form a catalyst; e) activating the catalyst of step d) under air in a fluidised bed at a temperature of from 600 to 800° C.

    摘要翻译: 本发明涉及用于生产高密度聚乙烯的催化剂,通过均聚乙烯或共聚乙烯和包含3至10个碳原子的α-烯烃共聚单体,其步骤为:a)选择具有比表面积的二氧化硅载体 大于300 m2 / g; b)用钛化合物处理二氧化硅载体,以便将钛引入载体或用铝化合物,以便将铝​​引入载体中; c)用铝化合物处理钛酸二氧化硅载体,以便将铝​​引入钛酸二氧化硅载体中,或用钛化合物处理铝化二氧化硅载体,以便将钛引入到铝化硅载体中; d)在钛酸化和镀铝的二氧化硅载体上沉积铬化合物以形成催化剂; e)在600至800℃的温度下在流化床中在空气下活化步骤d)的催化剂。