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36 条记录 (耗时 0.019 秒)

    Polymerization Process Utilizing Hydrogen
    14.
    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
    15.
    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。

    Methods of making styrenic polymeric compositions and methods of using same
    16.
    发明授权
    Methods of making styrenic polymeric compositions and methods of using same 有权
    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：US09012568B2

    公开(公告)日：2015-04-21

    申请号：US13267032

    申请日：2011-10-06

    申请人： David Knoeppel

    发明人： David Knoeppel

    IPC分类号： C08L9/00 ,  C08F12/08 ,  C08F279/02 ,  C08K5/098

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

    摘要： A method of 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. The reaction rate improving additive can be a sodium or calcium salt of an organic acid.

    摘要翻译： 一种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 其中当与不存在反应速率改进添加剂时进行的其它相似的聚合方法相比，聚合反应发生在总反应速率上，其增加等于或小于20％。 反应速率改善添加剂可以是有机酸的钠盐或钙盐。

    Ziegler-Natta catalyst
    18.
    发明授权
    Ziegler-Natta catalyst 有权
    齐格勒 - 纳塔催化剂

    公开(公告)号：US08003741B2

    公开(公告)日：2011-08-23

    申请号：US12069190

    申请日：2008-02-07

    申请人： Kayo Vizzini ,  David Knoeppel

    发明人： Kayo Vizzini ,  David Knoeppel

    IPC分类号： C08F4/50

    CPC分类号： C08F10/02 ,  C08F110/02 ,  C08F4/6546 ,  C08F4/6557 ,  C08F2500/12 ,  C08F2500/24 ,  C08F2500/18 ,  C08F2500/19 ,  C08F2500/07 ,  C08F2500/04 ,  C08F4/6548

    摘要： The present invention relates generally to catalysts, to methods of making catalysts, to methods of using catalysts, to methods of polymerizing, and to polymers made with such catalysts. More particularly, the present invention relates to polyolefin catalysts and to Ziegler-Natta catalysts, to methods of making such catalysts, to methods of using such catalysts, to polyolefin polymerization, and to polyolefins.

    摘要翻译： 本发明一般涉及催化剂，制备催化剂的方法，使用催化剂的方法，聚合方法以及用这种催化剂制备的聚合物。 更具体地，本发明涉及聚烯烃催化剂和齐格勒 - 纳塔催化剂，制备这种催化剂的方法，使用这种催化剂的方法，聚烯烃聚合和聚烯烃。

    Heat-treated Ziegler-Natta catalysts for ethylene polymerization
    19.
    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。