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    Modified catalyst supports
    6.
    发明授权
    Modified catalyst supports 有权
    改性催化剂载体

    公开(公告)号：US09156922B2

    公开(公告)日：2015-10-13

    申请号：US13581813

    申请日：2011-03-03

    申请人： Christopher Willocq ,  Martine Slawinski ,  Aurélien Vantomme

    发明人： Christopher Willocq ,  Martine Slawinski ,  Aurélien Vantomme

    IPC分类号： C08F4/02 ,  C08F4/6392 ,  C08F10/00 ,  C08F4/6592 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16

    CPC分类号： C08F10/14 ,  C08F4/025 ,  C08F4/63922 ,  C08F4/65927 ,  C08F10/00 ,  C08F10/06 ,  C08F110/06 ,  C08F210/06 ,  C08F210/16 ,  C08F210/14 ,  C08F4/65904 ,  C08F4/65916

    摘要： A process for preparing a supported catalyst system comprising the following steps: a. titanating a silica-containing catalyst support having a specific surface area of from 150 m2/g to 800 m2/g, preferably 280 to 600 m2/g, with at least one vaporized titanium compound of the general formula selected from RnTi(OR′)m and (RO)nTi(OR′)m, wherein R and R′ are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbon and halogens, and wherein n is 0 to 4, m is 0 to 4 and m+n equals 4, to form a titanated silica-containing catalyst support having at least 0.1 wt % of Ti based on the weight of the titanated silica-containing catalyst support, b. treating the support with a catalyst activating agent, preferably an alumoxane. c. treating the titanated support with at least one metallocene during or after step (b).

    摘要翻译： 一种制备负载催化剂体系的方法，包括以下步骤：a。 将比表面积为150m 2 / g至800m 2 / g，优选280至600m 2 / g的含二氧化硅的催化剂载体与至少一种选自RnTi（OR'）的通式的蒸发的钛化合物进行钛化， m和（RO）n Ti（OR'）m，其中R和R'相同或不同，并且选自含有1至12个碳和卤素的烃基，并且其中n为0至4，m为0至4 并且m + n等于4，以形成基于含钛二氧化硅的催化剂载体b的重量至少0.1重量％的Ti的钛酸二氧化硅催化剂载体。 用催化剂活化剂，优选铝氧烷处理载体。 C。 在步骤（b）期间或之后用至少一种茂金属处理钛酸化的载体。

    Process for the preparation of a particulate bimodal polyethylene product
    8.
    发明授权
    Process for the preparation of a particulate bimodal polyethylene product 有权
    制备颗粒状双峰聚乙烯产品的方法

    公开(公告)号：US08445607B2

    公开(公告)日：2013-05-21

    申请号：US13514085

    申请日：2010-12-17

    申请人： Martine Slawinski

    发明人： Martine Slawinski

    IPC分类号： C08F2/14 ,  C08F4/643 ,  C08F10/02

    CPC分类号： C08F10/02 ,  C08F4/65912 ,  C08F4/65916 ,  C08F110/02 ,  C08F4/65927 ,  C08F4/025 ,  C08F2/001 ,  C08F2500/05 ,  C08F2500/12 ,  C08F2500/24

    摘要： The invention relates to a process for the preparation of a particulate bimodal polyethylene product having a median particle diameter of less than 300 μm in a serially connected double loop reactor, wherein said polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support, wherein said polymerization catalyst has a median particle diameter of less than 50 μm; and whereby the ratio of the median particle diameter of the obtained bimodal polyethylene product to the median particle diameter of the applied polymerization catalyst is less than 30.

    摘要翻译： 本发明涉及一种在串联连接的双环反应器中制备中值粒径小于300μm的颗粒状双峰聚乙烯产品的方法，其中在聚合方法中应用的所述聚合催化剂包括固定有茂金属 - 铝氧烷的颗粒催化剂 在多孔二氧化硅载体上，其中所述聚合催化剂的中值粒径小于50μm; 由此获得的双峰聚乙烯产物的中值粒径与所施加的聚合催化剂的中值粒径之比小于30。

    METHOD FOR REPLACING COMPATIBLE ETHYLENE POLYMERIZATION CATALYSTS
    9.
    发明申请
    METHOD FOR REPLACING COMPATIBLE ETHYLENE POLYMERIZATION CATALYSTS 有权
    替代相容乙烯聚合催化剂的方法

    公开(公告)号：US20120252989A1

    公开(公告)日：2012-10-04

    申请号：US13514101

    申请日：2010-12-17

    申请人： Daan Dewachter ,  Martine Slawinski

    发明人： Daan Dewachter ,  Martine Slawinski

    IPC分类号： C08F2/06 ,  C08F2/01 ,  C08F4/42

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F2410/05 ,  C08F2/01

    摘要： The present invention relates to a method for optimizing the sequential feeding of at least two ethylene polymerization catalysts to an ethylene polymerization reactor, comprising: transferring to a mixing vessel a first ethylene polymerization catalyst and a first diluent, decreasing the concentration of said first ethylene polymerization catalyst in said mixing vessel, transferring to said mixing vessel a second ethylene polymerization catalyst and a second diluent, progressively replacing said first ethylene polymerization catalyst by said second ethylene polymerization catalyst and said first diluent by said second diluent, increasing the concentration of said second ethylene polymerization catalyst in said mixing vessel, sequentially transferring said first ethylene polymerization catalyst and said second ethylene polymerization catalyst from said mixing vessel to an ethylene polymerization reactor.

    摘要翻译： 本发明涉及一种用于优化至少两种乙烯聚合催化剂顺序进料到乙烯聚合反应器的方法，包括：将混合容器转移到第一乙烯聚合催化剂和第一稀释剂中，降低所述第一乙烯聚合的浓度 在所述混合容器中，将第二乙烯聚合催化剂和第二稀释剂转移到所述混合容器中，通过所述第二稀释剂逐渐用所述第二乙烯聚合催化剂和所述第一稀释剂代替所述第一乙烯聚合催化剂，增加所述第二乙烯的浓度 聚合催化剂，将所述第一乙烯聚合催化剂和所述第二乙烯聚合催化剂从所述混合容器依次转移到乙烯聚合反应器中。