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17 条记录 (耗时 0.038 秒)

    Supported antistatic polymerization catalyst
    4.
    发明授权
    Supported antistatic polymerization catalyst 有权
    支持抗静电聚合催化剂

    公开(公告)号：US07476715B2

    公开(公告)日：2009-01-13

    申请号：US11800590

    申请日：2007-05-07

    申请人： Ian McKay ,  Dusan Jeremic ,  Paul Mesquita ,  Grant Berent Jacobsen ,  Sergio Mastroianni

    发明人： Ian McKay ,  Dusan Jeremic ,  Paul Mesquita ,  Grant Berent Jacobsen ,  Sergio Mastroianni

    IPC分类号： C08F2/34

    CPC分类号： C08F10/00 ,  C08F4/65908 ,  C08F4/65916 ,  C08F4/6592 ,  C08F10/02 ,  C08F210/16 ,  C08F2410/02 ,  Y10S526/901 ,  Y10S526/943 ,  C08F4/025 ,  C08F2/002 ,  C08F4/65912 ,  C08F210/14

    摘要： The use of high activity “Single Site” polymerization catalysts often causes the fouling of polymerization reactors. The problem is particularly acute with gas phase polymerizations. While not wishing to be bound by theory it is believed that the fouling is initiated by the buildup of static charges in the reactor. The use of anti-static agents mitigates this problem, but typical antistatic agents contain polar species, which can deactivate the polymerization catalyst. We have now discovered that the use of a porous metal oxide support allows large levels of a selected antistatic agent to be used in a manner that reduces static/fouling problems in highly active polymerization catalysts.

    摘要翻译： 使用高活性“单点”聚合催化剂通常会导致聚合反应器的结垢。 气相聚合问题尤其严重。 虽然不希望被理论束缚，但据信污垢是由反应器中静电荷的累积引起的。 使用抗静电剂减轻了这个问题，但是典型的抗静电剂含有极性物质，这可以使聚合催化剂失活。 我们现在已经发现，使用多孔金属氧化物载体允许以降低高活性聚合催化​​剂中静电/结垢问题的方式使用大量选定的抗静电剂。

    Supported antistatic polymerization catalyst
    5.
    发明申请
    Supported antistatic polymerization catalyst 有权
    支持抗静电聚合催化剂

    公开(公告)号：US20070282085A1

    公开(公告)日：2007-12-06

    申请号：US11800590

    申请日：2007-05-07

    申请人： Ian McKay ,  Dusan Jeremic ,  Paul Mesquita ,  Grant Berent Jacobsen ,  Sergio Mastroianni

    发明人： Ian McKay ,  Dusan Jeremic ,  Paul Mesquita ,  Grant Berent Jacobsen ,  Sergio Mastroianni

    IPC分类号： C08F4/44

    CPC分类号： C08F10/00 ,  C08F4/65908 ,  C08F4/65916 ,  C08F4/6592 ,  C08F10/02 ,  C08F210/16 ,  C08F2410/02 ,  Y10S526/901 ,  Y10S526/943 ,  C08F4/025 ,  C08F2/002 ,  C08F4/65912 ,  C08F210/14

    摘要： The use of high activity “Single Site” polymerization catalysts often causes the fouling of polymerization reactors. The problem is particularly acute with gas phase polymerizations. While not wishing to be bound by theory it is believed that the fouling is initiated by the buildup of static charges in the reactor. The use of anti-static agents mitigates this problem, but typical antistatic agents contain polar species, which can deactivate the polymerization catalyst. We have now discovered that the use of a porous metal oxide support allows large levels of a selected antistatic agent to be used in a manner that reduces static/fouling problems in highly active polymerization catalysts.

    摘要翻译： 使用高活性“单点”聚合催化剂通常会导致聚合反应器的结垢。 气相聚合问题尤其严重。 虽然不希望被理论束缚，但据信污垢是由反应器中静电荷的累积引起的。 使用抗静电剂减轻了这个问题，但是典型的抗静电剂含有极性物质，这可以使聚合催化剂失活。 我们现在已经发现，使用多孔金属氧化物载体允许以降低高活性聚合催化​​剂中静电/结垢问题的方式使用大量选定的抗静电剂。

    Heterogeneous metallocene catalyst
    7.
    发明授权
    Heterogeneous metallocene catalyst 有权
    异质金属茂催化剂

    公开(公告)号：US06235671B1

    公开(公告)日：2001-05-22

    申请号：US09292039

    申请日：1999-04-14

    申请人： Ian McKay ,  Alison Ciupa ,  P. Scott Chisholm

    发明人： Ian McKay ,  Alison Ciupa ,  P. Scott Chisholm

    IPC分类号： B01J3100

    CPC分类号： B01J31/143 ,  B01J23/007 ,  B01J31/1805 ,  B01J31/2295 ,  B01J31/26 ,  B01J2531/46 ,  B01J2531/48 ,  B01J2531/49 ,  C08F4/65912 ,  C08F10/00 ,  C08F210/16 ,  C08F4/65916 ,  C08F4/6592 ,  C08F210/08 ,  C08F2500/03

    摘要： A heterogeneous catalyst for olefin polymerization is prepared by spray drying a mixture of a metallocene catalyst, a cocatalyst and a hydrotalcite. It Preferred hydrotalcites are magnesium-aluminum hydroxy carbonates. The catalysts are very active for ethylene polymerization. The hydrotalcite used in this invention are generally defined by the formula: (Mg1−x Alx(OH)2)n+An−x/n·m H2O wherein X is from 0 to 0.5, m is from 0 to 20 and An− is an anion having a charge of n. Preferred hydrotalcites are those in which the anion A is a carbonate and which have been dried of adsorbed water.

    摘要翻译： 通过喷雾干燥茂金属催化剂，助催化剂和水滑石的混合物来制备用于烯烃聚合的非均相催化剂。 优选的水滑石是羟基碳酸镁铝。 催化剂对于乙烯聚合是非常有活性的。 本发明中使用的水滑石通常由下式定义：其中X为0至0.5，m为0至20，An-为负电荷为n的阴离子。 优选的水滑石是阴离子A是碳酸盐并且已被吸附的水干燥的那些。

    Process for Disruption of Filter Cakes
    10.
    发明申请
    Process for Disruption of Filter Cakes 有权
    过滤蛋糕中断过程

    公开(公告)号：US20070204997A1

    公开(公告)日：2007-09-06

    申请号：US10594394

    申请日：2005-03-24

    申请人： Ralph Harris ,  Ian McKay

    发明人： Ralph Harris ,  Ian McKay

    IPC分类号： E21B37/06 ,  E21B33/138

    CPC分类号： C09K8/03 ,  C09K8/06 ,  C09K8/5045 ,  C09K8/508 ,  C09K8/52 ,  C09K2208/18

    摘要： A process for producing a self-disrupting filter cake in an underground formation, which process comprises: (a) incorporating into a drilling fluid a solid polymer capable of being converted by hydrolysis into one or more organic acids; (b) using the drilling fluid to drill a wellbore into the underground formation such that the solid polymer in the drilling fluid contributes to the formation of a filter cake; and (c) allowing the solid polymer to hydrolyse in the presence of water and to disrupt the integrity of the filter cake. A drilling fluid which contains as a bridging agent one or more solid polymers capable of being converted by hydrolysis into one or more organic acids is also provided.

    摘要翻译： 一种用于在地下地层中生产自破碎滤饼的方法，该方法包括：（a）将能够通过水解转化为一种或多种有机酸的固体聚合物掺入钻井液中; （b）使用钻井液将井筒钻入地下地层，使钻井液中的固体聚合物有助于形成滤饼; 和（c）使固体聚合物在水存在下水解并破坏滤饼的完整性。 含有作为桥连剂的一种或多种能够通过水解转化成一种或多种有机酸的固体聚合物的钻井液也被提供。