Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method
    73.
    发明授权
    Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method 有权
    具有替代1,2-亚苯基芳族二酯内给体的助催化剂组合物及方法

    公开(公告)号:US08288585B2

    公开(公告)日:2012-10-16

    申请号:US12650834

    申请日:2009-12-31

    CPC classification number: C08F4/6494 C08F4/76 C08F110/06 C08F4/651 C08F4/6465

    Abstract: Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produce propylene-based olefins with broad molecular weight distribution.

    Abstract translation: 公开了具有内电子给体的前催化剂组合物,其包括取代的亚苯基芳族二酯和任选的电子给体组分。 包含本发明的前催化剂组合物的齐格勒 - 纳塔催化剂组合物表现出高活性并产生具有宽分子量分布的丙烯基烯烃。

    Procatalyst composition with multiple internal donor having silyl ester and method
    75.
    发明授权
    Procatalyst composition with multiple internal donor having silyl ester and method 有权
    具有多个内部供体的主催化剂组合物具有甲硅烷基酯和方法

    公开(公告)号:US08222357B2

    公开(公告)日:2012-07-17

    申请号:US12623514

    申请日:2009-11-23

    Applicant: Linfeng Chen

    Inventor: Linfeng Chen

    Abstract: Provided is a procatalyst composition containing a multiple internal electron donor with at least two components, one of which is a silyl ester. The other component of the mixed internal electron donor may be an electron donor component. The electron donor component may be an aromatic acid ester, a di-ether, and combinations thereof. Catalyst compositions containing the multiple internal electron donor exhibit improved hydrogen response during olefin polymerization and produce propylene-based polymers with broad molecular weight distribution, high flexural modulus, and high melt flow rate.

    Abstract translation: 提供了含有至少两种组分的多重内电子给体的主催化剂组合物,其中一种是甲硅烷基酯。 混合内电子给​​体的另一组分可以是电子给体组分。 电子给体组分可以是芳族酸酯,二醚及其组合。 含有多重内电子给体的催化剂组合物在烯烃聚合期间表现出改善的氢响应,并产生具有宽分子量分布,高挠曲模量和高熔体流动速率的基于丙烯的聚合物。

    Gas-phase polymerization process having multiple flow regimes
    77.
    发明授权
    Gas-phase polymerization process having multiple flow regimes 有权
    具有多种流动状态的气相聚合方法

    公开(公告)号:US08178633B2

    公开(公告)日:2012-05-15

    申请号:US12970617

    申请日:2010-12-16

    CPC classification number: C08F10/06 C08F4/649 C08F4/00 C08F2500/24 C08F2500/18

    Abstract: The present invention relates to an improvement for gas phase olefin polymerization process under two or more different flow regimes. The process involves adding a mixed electron donor system to a reactor having two or more different flow regimes, wherein the mixed electron donor system comprises at least one selectivity control agent and at least one activity limiting agent. The invention is particularly well suited for reactor systems which include a regime characterized by having a low-velocity or high-solid holdup, which have been reported to have operational problems such as particle agglomeration and formation of polymer “chunks”.

    Abstract translation: 本发明涉及在两种或多种不同流动状态下气相烯烃聚合方法的改进。 该方法包括向具有两个或多个不同流动状态的反应器中加入混合电子给体系,其中混合电子给体系包含至少一种选择性控制剂和至少一种活性限制剂。 本发明特别适用于包括具有低速或高固体滞留的状态的反应器系统,其被报告具有诸如颗粒聚集和形成聚合物“块”的操作问题。

    Self limiting catalyst composition and propylene polymerization process
    79.
    发明授权
    Self limiting catalyst composition and propylene polymerization process 有权
    自限催化剂组合物和丙烯聚合方法

    公开(公告)号:US07989383B2

    公开(公告)日:2011-08-02

    申请号:US12850170

    申请日:2010-08-04

    Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.

    Abstract translation: 一种用于丙烯聚合的催化剂组合物,其包含一种或多种齐格勒 - 纳塔前催化剂组合物,其包含一种或多种过渡金属化合物和一种或多种芳族二羧酸内电子给体的酯; 一种或多种含铝助催化剂; 包含至少一种含有至少一个与硅原子键合的C 1-10烷氧基的含硅化合物的选择性控制剂(SCA)和一种或多种包含一种或多种脂族或脂环族羧酸的活性限制剂(ALA)化合物; 烷基 - ,环烷基 - 或烷基(聚)(烷氧基) - (聚)酯衍生物; 或惰性取代的衍生物。

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