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    Polymerization Process Utilizing Hydrogen
    1.
    发明申请
    Polymerization Process Utilizing Hydrogen 审中-公开
    利用氢气的聚合方法

    公开(公告)号：US20110313116A1

    公开(公告)日：2011-12-22

    申请号：US12817269

    申请日：2010-06-17

    申请人： David Knoeppel

    发明人： David Knoeppel

    IPC分类号： C08F4/24

    CPC分类号： C08F210/16 ,  C08F2/38 ,  C08F4/24 ,  C08F210/14 ,  C08F2500/12

    摘要： Ethylene polymerization processes and polymers formed from the same are discussed herein. The ethylene polymerization processes generally include introducing ethylene monomer into a polymerization reaction zone; introducing a chromium oxide based catalyst into the polymerization reaction zone; introducing a quantity of hydrogen into the polymerization reaction zone; and contacting the ethylene monomer with the chromium oxide based catalyst in the polymerization reaction zone in the presence of hydrogen to form polyethylene, wherein the polyethylene formed in the presence of hydrogen exhibits an MI2 that increases with an increasing quantity of hydrogen and a molecular weight and molecular weight distribution that remains essentially constant with an increasing quantity of hydrogen.

    摘要翻译： 本文讨论了乙烯聚合方法和由其形成的聚合物。 乙烯聚合方法通常包括将乙烯单体引入聚合反应区; 将氧化铬基催化剂引入聚合反应区; 将一定量的氢气引入聚合反应区; 并在氢气存在下使乙烯单体与氧化铬基催化剂在聚合反应区中接触以形成聚乙烯，其中在氢气存在下形成的聚乙烯表现出随着氢气和分子量的增加而增加的MI2， 分子量分布随着氢的增加而保持基本恒定。

    Methods of making styrenic polymeric compositions and methods of using same
    2.
    发明申请
    Methods of making styrenic polymeric compositions and methods of using same 失效
    制备苯乙烯聚合物组合物的方法及其使用方法

    公开(公告)号：US20100184920A1

    公开(公告)日：2010-07-22

    申请号：US12357905

    申请日：2009-01-22

    申请人： David Knoeppel

    发明人： David Knoeppel

    IPC分类号： C08L9/00 ,  C08F12/08

    CPC分类号： C08F279/02 ,  C08K5/098 ,  C08F212/08 ,  C08L51/04

    摘要： A method comprising preparing a reaction mixture comprising a styrene monomer, an antioxidant, and a reaction rate improving additive, contacting the reaction mixture with an antioxidant reactive compound, and placing the reaction mixture under conditions suitable for polymerization of the styrene monomer to a styrenic polymer wherein the polymerization occurs at an overall reaction rate that is increased by equal to or less than 20% when compared to an otherwise similar polymerization process carried out in the absence of the reaction rate improving additive A method comprising preparing a reaction mixture comprising a styrene monomer, an elastomer, an antioxidant, a sodium or calcium salt of an organic acid, and an initiator; and placing the reaction mixture under conditions suitable for polymerization of the styrene monomer to a styrenic polymer, wherein the sodium or calcium salt of an organic acid protects the initiator such that the polymerization is carried out at a reaction rate greater than would otherwise be the rate in the absence of the sodium or calcium salt of an organic acid.

    摘要翻译： 一种包括制备包含苯乙烯单体，抗氧化剂和反应速率改进添加剂的反应混合物的方法，使反应混合物与抗氧化反应性化合物接触，并将反应混合物置于适合于将苯乙烯单体聚合成苯乙烯聚合物的条件下 其中当在不存在反应速率改进添加剂A的情况下进行相似的聚合方法时，聚合反应的总反应速率增加等于或小于20％。该方法包括制备包含苯乙烯单体的反应混合物 ，有机酸的弹性体，抗氧化剂，钠或钙盐和引发剂; 并将反应混合物置于适合于将苯乙烯单体聚合成苯乙烯聚合物的条件下，其中有机酸的钠盐或钙盐保护引发剂，使得聚合反应速率大于否则为反应速率 在没有有机酸的钠盐或钙盐的情况下。

    Heat-treated Ziegler-Natta catalysts for ethylene polymerization
    4.
    发明授权
    Heat-treated Ziegler-Natta catalysts for ethylene polymerization 有权
    用于乙烯聚合的热处理齐格勒 - 纳塔催化剂

    公开(公告)号：US08501653B2

    公开(公告)日：2013-08-06

    申请号：US13028390

    申请日：2011-02-16

    申请人： Lei Zhang ,  David Knoeppel

    发明人： Lei Zhang ,  David Knoeppel

    IPC分类号： B01J3/00 ,  B01J37/00 ,  C08F4/02 ,  C08F4/60

    CPC分类号： C08F10/00 ,  C08F110/02 ,  C08F4/6557 ,  C08F2500/04 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/18 ,  C08F2500/20 ,  C08F2500/23 ,  C08F2500/26

    摘要： Catalyst systems, processes of forming the same and polymers formed therefrom are described herein. The processes of forming the catalyst systems generally include contacting a blend of an alkyl magnesium compound and an organoaluminum compound with an alcohol to form a magnesium dialkoxide compound; contacting the magnesium dialkoxide compound with a first agent to form a solution of reaction product “A”, the first agent including a halogenating/titanating agent; contacting the solution of reaction product “A” with a second agent to form a solid reaction product “B”, the second agent including a blend of a first metal halide and a metal alkoxide; contacting the solid reaction product “B” with a third agent to form a solid reaction product “C”, the third agent including a second metal halide; contacting the solid reaction product “C” with a fourth agent to form a solid reaction product “D”, the fourth agent including a third metal halide; contacting the solid reaction product “D” with a fifth agent to form a catalyst component, the fifth agent including a reducing agent; and heating an intermediate selected from reaction product “A”, reaction product “B”, reaction product “C”, reaction product “D” and combinations thereof to form a heat-treated catalyst that results in a shear response and a molecular weight distribution for a polymer produced by the heat-treated catalyst that are greater than a shear response and a molecular weight distribution for a polymer produced by an identical non-heat-treated catalyst.

    摘要翻译： 本文描述了催化剂体系，其形成方法和由其形成的聚合物。 形成催化剂体系的方法通常包括使烷基镁化合物和有机铝化合物的混合物与醇接触以形成二烷氧基镁化合物; 使二烷氧基镁化合物与第一试剂接触以形成反应产物“A”的溶液，第一试剂包括卤化/钛化剂; 使反应产物“A”的溶液与第二试剂接触以形成固体反应产物“B”，第二试剂包括第一金属卤化物和金属醇盐的共混物; 使固体反应产物“B”与第三试剂接触以形成固体反应产物“C”，第三试剂包括第二金属卤化物; 使固体反应产物“C”与第四试剂接触以形成固体反应产物“D”，第四试剂包括第三金属卤化物; 使固体反应产物“D”与第五试剂接触以形成催化剂组分，第五试剂包括还原剂; 并加热选自反应产物“A”，反应产物“B”，反应产物“C”，反应产物“D”及其组合的中间体，以形成导致剪切响应和分子量分布的热处理催化剂 对于由热处理催化剂制备的聚合物，该聚合物大于由相同的非热处理催化剂制备的聚合物的剪切响应和分子量分布。

    Increasing Rubber Phase Volume in Rubber-Modified Polystyrene
    6.
    发明申请
    Increasing Rubber Phase Volume in Rubber-Modified Polystyrene 有权
    橡胶改性聚苯乙烯橡胶相体积增加

    公开(公告)号：US20120277375A1

    公开(公告)日：2012-11-01

    申请号：US13095940

    申请日：2011-04-28

    申请人： Carlos DeAnda ,  Graciela Morales ,  Jose M. Sosa ,  David Knoeppel

    发明人： Carlos DeAnda ,  Graciela Morales ,  Jose M. Sosa ,  David Knoeppel

    IPC分类号： C08F279/02

    CPC分类号： C08F279/02 ,  C08F285/00 ,  C08F297/044 ,  C08F299/02 ,  C08F212/08

    摘要： A process for producing rubber modified polymers having an increased rubber phase volume, including feeding a vinyl aromatic monomer and an elastomer to a polymerization reactor to form a reaction mixture, polymerizing the reaction mixture, combining a copolymer to the polymerized reaction mixture to form a combined mixture, subjecting the combined mixture to further polymerization, and obtaining a rubber modified polymer product from the further polymerization.

    摘要翻译： 一种制备具有增加的橡胶相体积的橡胶改性聚合物的方法，包括将乙烯基芳族单体和弹性体加入到聚合反应器中以形成反应混合物，使反应混合物聚合，将共聚物与聚合的反应混合物结合形成 混合物，使组合的混合物进一步聚合，并从进一步的聚合中获得橡胶改性的聚合物产物。

    Preparation of supported chromium catalyst and polymerization process
    9.
    发明申请
    Preparation of supported chromium catalyst and polymerization process 失效
    负载型铬催化剂的制备及聚合工艺

    公开(公告)号：US20090198026A1

    公开(公告)日：2009-08-06

    申请号：US12012038

    申请日：2008-01-31

    申请人： Ricky McCormick ,  David Knoeppel

    发明人： Ricky McCormick ,  David Knoeppel

    IPC分类号： C08F4/24 ,  B01J23/26

    CPC分类号： C08F210/16 ,  C08F4/22 ,  C08F4/69 ,  C08F4/24 ,  C08F2/34 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/19 ,  C08F2500/07

    摘要： A process for the preparation of a chromium-type supported olefin polymerization catalyst. A fluidized bed of support particles in an inert carrier gas is established. A chromium (III) compound is added to the fluidized support particles to provide a supported catalyst component. The supported catalyst component is activated to convert at least a portion of the chromium (III) to Chromium (VI). The chromium (III) containing particles may be recovered from the fluidized bed and then activated or they may be activated in the fluidized bed. Also the support particles can be treated in the fluidized bed with other treatment agents. The support particles may be pretreated with a solution of a boron treating agent prior to incorporation of the support in the fluidized bed.

    摘要翻译： 一种制备铬型负载型烯烃聚合催化剂的方法。 建立了惰性载气中载体颗粒的流化床。 向流化载体颗粒中加入铬（III）化合物以提供负载型催化剂组分。 活化负载的催化剂组分以将至少一部分铬（III）转化为铬（VI）。 含有铬（III）的颗粒可以从流化床中回收，然后活化，或者它们可以在流化床中活化。 还可以在流化床中用其它处理剂处理载体颗粒。 在将载体引入流化床之前，载体颗粒可以用硼处理剂的溶液进行预处理。

    Methods for Improving Heat Transfer in Polymerization Processes
    10.
    发明申请
    Methods for Improving Heat Transfer in Polymerization Processes 审中-公开
    改善聚合过程热传递的方法

    公开(公告)号：US20090131616A1

    公开(公告)日：2009-05-21

    申请号：US12260154

    申请日：2008-10-29

    申请人： David Knoeppel ,  Steve Nitz ,  Steven Gray

    发明人： David Knoeppel ,  Steve Nitz ,  Steven Gray

    IPC分类号： C08F4/08

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F2/14 ,  C08F2/00 ,  C08F2500/23 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/24

    摘要： Methods for improving heat transfer in polymerization processes are described herein. The methods generally include contacting olefin monomer with a catalyst system within a reaction zone to form particles having a first average particle size and altering the reaction zone to improve heat transfer and form polymer particles having a second average particle size. For example, the second average particle size may be larger than the first average particle size and the second particle size results in improved heat transfer over the first particle size.

    摘要翻译： 本文描述了改善聚合方法中热传递的方法。 所述方法通常包括使烯烃单体与反应区内的催化剂体系接触以形成具有第一平均粒径并改变反应区以改善热传递并形成具有第二平均粒度的聚合物颗粒的颗粒。 例如，第二平均粒径可以大于第一平均粒径，第二粒径导致在第一粒径上的热传递改善。