Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use
    21.
    发明申请
    Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use 有权
    预处理和预聚合的聚烯烃催化剂,其生产方法和使用方法

    公开(公告)号:US20050159301A1

    公开(公告)日:2005-07-21

    申请号:US11031587

    申请日:2005-01-07

    摘要: A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.

    摘要翻译: 修饰齐格勒 - 纳塔型聚烯烃催化剂的方法包括使齐格勒 - 纳塔催化剂与烯烃单体接触以形成预聚合的催化剂。 预聚合的催化剂可以包含减少数量的具有40微米或更小尺寸的催化剂颗粒。 预聚合的催化剂可用于聚合过程中,以生产具有比齐格勒 - 纳塔型催化剂低的聚合物绒毛数量的聚合物绒毛颗粒。

    Multi-Component Catalyst Systems and Polymerization Processes for Forming Broad Composition Distribution Polymers
    23.
    发明申请
    Multi-Component Catalyst Systems and Polymerization Processes for Forming Broad Composition Distribution Polymers 有权
    多组分催化剂体系和用于形成广泛组分分布聚合物的聚合方法

    公开(公告)号:US20120264894A1

    公开(公告)日:2012-10-18

    申请号:US13525443

    申请日:2012-06-18

    IPC分类号: C08F4/76 C08F210/06

    摘要: Propylene polymerization processes, polymers and films formed therefrom are described herein. The propylene polymerization processes generally include contacting propylene and an amount of ethylene with a first metallocene catalyst and a second metallocene catalyst within a polymerization reaction vessel to form a propylene based polymer, wherein the amount is an amount effective to form the propylene based polymer including from about 2 wt. % to about 6 wt. % ethylene, the second metallocene catalyst is capable of incorporating a greater amount of ethylene into the propylene based polymer than the first metallocene catalyst and wherein the first metallocene catalyst is capable of forming a propylene/ethylene random copolymer exhibiting a melting temperature that is greater than that of a propylene/ethylene random copolymer formed from the second metallocene catalyst.

    摘要翻译: 本文描述了丙烯聚合方法,由其形成的聚合物和膜。 丙烯聚合方法通常包括在聚合反应容器内将丙烯和一定量的乙烯与第一茂金属催化剂和第二茂金属催化剂接触以形成丙烯基聚合物,其中该量是有效形成基于丙烯的聚合物的量,包括 约2重量% %至约6wt。 %乙烯,第二茂金属催化剂能够比第一茂金属催化剂在丙烯基聚合物中引入更多量的乙烯,并且其中第一茂金属催化剂能够形成丙烯/乙烯无规共聚物,其表现出大于 由第二茂金属催化剂形成的丙烯/乙烯无规共聚物。

    SOLUBLE MAGNESIUM COMPLEXES USEFUL FOR THE PRODUCTION OF POLYOLEFIN CATALYSTS AND CATALYSTS PREPARED THEREWITH
    28.
    发明申请
    SOLUBLE MAGNESIUM COMPLEXES USEFUL FOR THE PRODUCTION OF POLYOLEFIN CATALYSTS AND CATALYSTS PREPARED THEREWITH 失效
    用于生产聚烯烃催化剂的可溶性镁复合材料及其制备的催化剂

    公开(公告)号:US20060135354A1

    公开(公告)日:2006-06-22

    申请号:US11016104

    申请日:2004-12-17

    申请人: Tim Coffy Steven Gray

    发明人: Tim Coffy Steven Gray

    IPC分类号: C08F4/44 B01J31/00

    摘要: A method of forming a polyolefin catalyst component includes halogenating metal complexes. The metal complexes result from reacting a metal alkoxide with an alcohol-ether. A particular non-limiting example is a magnesium complex formed by reacting magnesium alkoxide with an ethylene alcohol-ether, and then chlorinating the magnesium complex. Catalyst components, catalysts, catalyst systems, polyolefin polymers and methods of making each are disclosed.

    摘要翻译: 形成聚烯烃催化剂组分的方法包括卤化金属络合物。 金属络合物是由金属醇盐与醇 - 醚反应产生的。 特别的非限制性实例是通过使烷氧基镁与乙烯醇 - 醚反应形成的镁络合物,然后氯化镁络合物。 公开了催化剂组分,催化剂,催化剂体系,聚烯烃聚合物和制备方法。

    Controlled finishes for free surface polyethylene resins
    29.
    发明申请
    Controlled finishes for free surface polyethylene resins 审中-公开
    自由表面聚乙烯树脂的控制表面处理

    公开(公告)号:US20060020063A1

    公开(公告)日:2006-01-26

    申请号:US10896713

    申请日:2004-07-22

    IPC分类号: C08K5/49

    摘要: It has been discovered that the amount of fluoropolymer additive used in a polyethylene resin affects the quality of finish of an article made with free surface polyethylene resins using chromium, Ziegler-Natta or metallocene catalysts. Reducing the amount of fluoropolymer increases the matte nature of the polymer finish, whereas increasing the amount of fluoropolymer increases the gloss nature of the finish. Introducing a peroxide or air in an increasing amount increases the long chain branching (LCB) of the polymer. Introducing an antioxidant in an amount to balance the peroxide amount can improve the melt strength of the polymer, and the amount of antioxidant is balanced with the amount of peroxide and/or air. The resultant polymer density ranges between about 0.960 and 0.962 g/cm3 inclusive, where the molecular weight distribution (MWD) of the polymer is greater than 3 and less than 6.

    摘要翻译: 已经发现,聚乙烯树脂中使用的含氟聚合物添加剂的量影响使用铬,齐格勒 - 纳塔或茂金属催化剂的用游离表面聚乙烯树脂制成的制品的表面光洁度。 减少含氟聚合物的量增加了聚合物涂饰的无光泽性质,而增加含氟聚合物的量增加了涂饰的光泽性质。 以增加的量引入过氧化物或空气增加聚合物的长链支化(LCB)。 引入抗氧化剂以达到平衡过氧化物量可以提高聚合物的熔体强度,并且抗氧化剂的量与过氧化物和/或空气的量平衡。 所得聚合物密度在约0.960至0.962g / cm 3之间,其中聚合物的分子量分布(MWD)大于3且小于6。

    Methods of catalyst activation
    30.
    发明授权
    Methods of catalyst activation 有权
    催化剂活化方法

    公开(公告)号:US09260541B2

    公开(公告)日:2016-02-16

    申请号:US12782810

    申请日:2010-05-19

    摘要: A method comprising preparing a multi-component catalyst system comprising a catalyst and a cocatalyst, and adjusting the level of at least one component of the catalyst system to maintain a user-desired level of catalyst activity throughout a process, wherein the component comprises a catalyst activator and wherein the catalyst activator comprises the catalyst or the cocatalyst. A method comprising contacting a polymerization catalyst system comprising a Ziegler-Natta catalyst and a cocatalyst with a catalyst activator at least twice during a polymerization process, wherein the polymerization process is carried out in a reactor system comprising multiple reactor types.

    摘要翻译: 一种方法,包括制备包含催化剂和助催化剂的多组分催化剂体系,并调节催化剂体系的至少一种组分的水平以在整个方法中保持用户期望的催化剂活性水平,其中组分包含催化剂 活化剂,其中催化剂活化剂包括催化剂或助催化剂。 一种方法,其包括使聚合催化剂体系包含齐格勒 - 纳塔催化剂和助催化剂与催化剂活化剂在聚合过程中至少两次,其中聚合方法在包括多种反应器类型的反应器系统中进行。