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    Olefin polymerization process
    8.
    发明申请
    Olefin polymerization process 有权
    烯烃聚合工艺

    公开(公告)号：US20060160962A1

    公开(公告)日：2006-07-20

    申请号：US10563497

    申请日：2004-06-29

    申请人： Maria Tonti ,  Markus Oberhoff ,  Volker Fraaije ,  Bernd Bachmann

    发明人： Maria Tonti ,  Markus Oberhoff ,  Volker Fraaije ,  Bernd Bachmann

    IPC分类号： C08F2/00

    CPC分类号： C08F110/06 ,  C08F4/65912 ,  C08F4/65916 ,  Y10S526/904 ,  Y10S526/905 ,  C08F4/65927 ,  C08F2/06

    摘要： A process for polymerizing one or more alpha-olefins of formula CH2═CHT wherein T is a hydrogen atom or a C1-C20 alkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein: (i) the reaction is carried out in a liquid medium; (ii) the average residence time of the metallocene-based catalyst system is not more than 30 minutes; (iii) the temperature of the loop ranges from 25° to 70° C.; in to obtain a polymerization degree ranging from 60 to 500 g per gram of catalyst system; b) feeding in continuous the prepolymerized metallocene-based catalyst system obtained in step a) into a polymerization reactor C) polymerizing one or more alpha-olefins, the same or different from the alpha olefins used in step a), in the presence of said prepolymerized metallocene-based catalyst system.

    摘要翻译： 用于聚合一种或多种式CH 2 -CHT的α-烯烃的方法，其中T是氢原子或C 1 -C 20 - 烷基，其包括以下步骤：a）在环流反应器中以连续方式使一种或多种所述α-烯烃与茂金属基催化剂体系接触，其中：（i）反应在液体介质中进行; （ii）金属茂系催化剂体系的平均停留时间不超过30分钟; （iii）环路温度为25°至70°C; 以获得每克催化剂体系60至500克的聚合度; b）将在步骤a）中获得的预聚合的茂金属基催化剂体系连续进料到聚合反应器中C）使所述α-烯烃在所述 预聚金属茂系催化剂体系。

    Process for the Preparation of Supported Catalysts
    9.
    发明申请
    Process for the Preparation of Supported Catalysts 有权
    负载催化剂的制备方法

    公开(公告)号：US20120283400A1

    公开(公告)日：2012-11-08

    申请号：US13514970

    申请日：2010-12-16

    申请人： Shahram Mihan ,  Volker Fraaije ,  Harald Schmitz

    发明人： Shahram Mihan ,  Volker Fraaije ,  Harald Schmitz

    IPC分类号： C08F4/42 ,  C08F4/80 ,  C08F210/14 ,  C08F4/76

    CPC分类号： C08F4/70 ,  C08F4/65912 ,  C08F4/6592 ,  C08F4/65925 ,  C08F110/02 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/17 ,  C08F2500/04 ,  C08F10/00 ,  C08F4/7042 ,  C08F4/61916 ,  C08F10/02 ,  C08F4/61904 ,  C08F4/61912

    摘要： The present invention refers to a process for the preparation of supported catalysts for the polymerization of olefins comprising at least a late transition metal complex, wherein the process comprises two steps. In the first step a catalytically active component comprising at least one late transition metal complex, optionally in the presence of one or more cocatalysts is mixed with a support; and in the second step the obtained mixture is treated at a reduced pressure under a flow of inert gas at a temperature equal to or below 40° C. to obtain a supported catalyst. The method is especially useful for the preparation of dual supported catalysts, useful in the gas-phase polymerization of olefins.

    摘要翻译： 本发明涉及制备用于烯烃聚合的载体催化剂的方法，其包括至少一种后期过渡金属络合物，其中该方法包括两个步骤。 在第一步中，任选地在一种或多种助催化剂存在下，包含至少一种后过渡金属络合物的催化活性组分与载体混合; 在第二步骤中，将所得混合物在惰性气体流下，在等于或低于40℃的温度下，在减压下进行处理，得到负载型催化剂。 该方法对于制备可用于烯烃气相聚合的双载体催化剂特别有用。