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    Process for transitioning between Ziegler-Natta-based and chromium-based catalysts
    7.
    发明授权
    Process for transitioning between Ziegler-Natta-based and chromium-based catalysts 有权
    齐格勒 - 纳塔和铬基催化剂之间的过渡过程

    公开(公告)号：US07629422B2

    公开(公告)日：2009-12-08

    申请号：US11312272

    申请日：2005-12-20

    申请人： Mark G. Goode ,  Kevin J. Cann ,  F. David Hussein ,  Robert L. Santana ,  David C. Schutz ,  Agapios K. Agapiou

    发明人： Mark G. Goode ,  Kevin J. Cann ,  F. David Hussein ,  Robert L. Santana ,  David C. Schutz ,  Agapios K. Agapiou

    IPC分类号： C08F2/38 ,  C08F2/34 ,  C08F210/08

    CPC分类号： C08F10/02 ,  C08F210/16 ,  C08F2410/05 ,  Y10S526/901 ,  C08F2/34 ,  C08F2/42 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/18 ,  C08F210/08

    摘要： Embodiments of our invention relate to processes for transitioning among polymerization catalyst systems including processes for transitioning among olefin polymerization reactions using Ziegler-Natta catalysts systems and chromium-based catalyst systems. Among embodiments contemplated are a method of transitioning from a first catalyst to a second catalyst in an olefin polymerization reactor, comprising: adding to the reactor a deactivating agent (DA) selected from one of carbon monoxide, carbon dioxide, or combinations thereof; adding to the reactor a cocatalyst adsorbing agent (CAA), comprising an inorganic oxide selected from one of silica, alumina or combinations thereof; wherein the first catalyst comprises at least one conventional Ziegler-Natta catalyst, and a cocatalyst, wherein the second catalyst comprises at least one chromium-based catalyst, wherein the reactor is a gas-phase, fluidized bed reactor, and wherein the CAA is substantially free of transition metals. In another embodiment a method of transitioning from a first catalyst to a second catalyst in an olefin polymerization reactor is contemplated, comprising: adding a transition aid agent (TAA) wherein the TAA is selected from one of alkoxylated amines, alkoxylated amides, or combinations thereof, wherein the first catalyst comprises at least one Ziegler-Natta catalyst comprising the catalyst, a cocatalyst and optionally a support, and the second catalyst comprises at least one chromium-based catalyst.

    摘要翻译： 本发明的实施方案涉及在聚合催化剂体系中过渡的方法，包括使用齐格勒 - 纳塔催化剂体系和铬基催化剂体系在烯烃聚合反应中过渡的方法。 考虑的实施方案是在烯烃聚合反应器中从第一催化剂转变为第二催化剂的方法，包括：向反应器中加入选自一氧化碳，二氧化碳或其组合中的一种失活剂（DA）; 向所述反应器中加入选自二氧化硅，氧化铝或其组合的无机氧化物的助催化剂吸附剂（CAA）; 其中所述第一催化剂包含至少一种常规齐格勒 - 纳塔催化剂和助催化剂，其中所述第二催化剂包含至少一种铬基催化剂，其中所述反应器是气相流化床反应器，并且其中所述CAA基本上 没有过渡金属。 在另一个实施方案中考虑了在烯烃聚合反应器中从第一催化剂转变为第二催化剂的方法，包括：加入转移助剂（TAA），其中TAA选自烷氧基化胺，烷氧基化酰胺或其组合之一 其中所述第一催化剂包含至少一种齐格勒 - 纳塔催化剂，其包含所述催化剂，助催化剂和任选的载体，所述第二催化剂包含至少一种铬基催化剂。

    Additive for Polyolefin Polymerization Processes
    8.
    发明申请
    Additive for Polyolefin Polymerization Processes 有权
    聚烯烃聚合方法的添加剂

    公开(公告)号：US20130267666A1

    公开(公告)日：2013-10-10

    申请号：US13993646

    申请日：2011-12-06

    申请人： Wesley R. Mariott ,  F. David Hussein

    发明人： Wesley R. Mariott ,  F. David Hussein

    IPC分类号： C08F210/14

    CPC分类号： C08F210/14 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F210/16 ,  C08F2410/02 ,  C08F4/65904 ,  C08F4/64141 ,  C08F2500/12 ,  C08F2/005 ,  C08F2/34

    摘要： A polymerization process is disclosed comprising polymerizing an olefin to form an olefin-based polymer in a polymerization reactor; and introducing a polyetheramine additive to the polymerization reactor. The process may further comprise monitoring static in the polymerization reactor; maintaining the static at a desired level by use of a polyetheramine additive, where the polyetheramine additive is present in the reactor in the range from about 0.1 to about 500 ppmw, based on the weight of polymer produced by the process.

    摘要翻译： 公开了一种聚合方法，包括在聚合反应器中聚合烯烃以形成烯烃基聚合物; 并向聚合反应器中引入聚醚胺添加剂。 该方法还可以包括在聚合反应器中监测静态; 通过使用聚醚胺添加剂将静电保持在所需的水平，其中聚醚胺添加剂以约0.1至约500ppmw的范围存在于反应器中，基于通过该方法生产的聚合物的重量。