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    Ziegler-Natta catalyst
    12.
    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

    Applicant: Kayo Vizzini ,  David Knoeppel

    Inventor： Kayo Vizzini ,  David Knoeppel

    IPC: C08F4/50

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

    Abstract: 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.

    Abstract translation: 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。

    Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations
    13.
    发明授权
    Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations 有权
    用于减少茂金属催化聚合中的生产问题的助催化剂

    公开(公告)号：US07282546B2

    公开(公告)日：2007-10-16

    申请号：US11158454

    申请日：2005-06-22

    Applicant: Steven Gray ,  Henry Enriquez ,  David Knoeppel

    Inventor： Steven Gray ,  Henry Enriquez ,  David Knoeppel

    IPC: C08F4/42

    CPC classification number: C08F10/00 ,  C08F4/65916 ,  C08F4/65927 ,  C08F210/16 ,  Y10S526/934 ,  C08F4/65912 ,  C08F210/14

    Abstract: Polyolefins may be prepared using a cocatalyst conforming to the formula: AIRz(Xz)nLzm wherein Rz is a linear or branched organic moiety having at least 5 carbons and Xz is a linear or branched organic moiety having at least 5 carbons or a heterocyclic moiety having at least 4 atoms and can be anionic or di-anionic. The aluminum complex may also be in the form of an adduct complex where Lz is a Lewis base and m=1-3. The cocatalyst Rz components are selected such that they do not react with water under polymerization conditions to form a species that is highly soluble in the polymerization diluent. Use of the specified cocatalyst reduces fouling during metallocene-catalyzed runs and “post-metallocene hangover” when the same production equipment is transitioned to non-metallocene catalyst runs using catalysts such as chromium.

    Abstract translation: 聚烯烃可以使用符合下列公式的助催化剂制备：<？in-line-formula description =“In-line formula”end =“lead”？>空气（X < ？？？？？z？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？ 其中R z是具有至少5个碳原子的直链或支链有机部分，X是具有至少5个碳原子的直链或支链有机部分或具有至少5个碳原子的杂环部分， 至少4个原子，可以是阴离子或二阴离子。 铝络合物也可以是加合物络合物的形式，其中L z是路易斯碱，m = 1-3。 选择助催化剂R z z组分使得它们在聚合条件下不与水反应以形成高度可溶于聚合稀释剂的物质。 使用特定的助催化剂可以减少金属茂催化运行期间的结垢和“后金属茂宿醉”，当相同的生产设备使用催化剂如铬转变为非茂金属催化剂运行时。

    Heat-treated Ziegler-Natta catalysts for ethylene polymerization
    14.
    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

    Applicant: Lei Zhang ,  David Knoeppel

    Inventor： Lei Zhang ,  David Knoeppel

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

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

    Abstract: 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.

    Abstract translation: 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
    16.
    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

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

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

    IPC: C08F279/02

    CPC classification number: C08F279/02 ,  C08F285/00 ,  C08F297/044 ,  C08F299/02 ,  C08F212/08

    Abstract: 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.

    Abstract translation: 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。

    Methods for Improving Heat Transfer in Polymerization Processes
    19.
    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

    Applicant: David Knoeppel ,  Steve Nitz ,  Steven Gray

    Inventor： David Knoeppel ,  Steve Nitz ,  Steven Gray

    IPC: C08F4/08

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F2/14 ,  C08F2/00 ,  C08F2500/23 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/24

    Abstract: 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.

    Abstract translation: 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。

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