Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use
    1.
    发明授权
    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:US07365138B2

    公开(公告)日:2008-04-29

    申请号:US11031587

    申请日:2005-01-07

    IPC分类号: C08F4/654

    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。

    Polyolefin catalysts, production thereof and method of use
    2.
    发明授权
    Polyolefin catalysts, production thereof and method of use 有权
    聚烯烃催化剂,其生产方法和使用方法

    公开(公告)号:US06846887B2

    公开(公告)日:2005-01-25

    申请号:US10370365

    申请日:2003-02-18

    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。

    Ziegler-natta catalysts for olefin polymerization
    3.
    发明授权
    Ziegler-natta catalysts for olefin polymerization 失效
    齐格勒 - 纳塔催化剂用于烯烃聚合

    公开(公告)号:US06174971B1

    公开(公告)日:2001-01-16

    申请号:US08789862

    申请日:1997-01-28

    IPC分类号: C08F444

    摘要: A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation which includes treating a soluble magnesium compound with successively stronger chlorinating-titanating reagents. The catalyst may be used in polymerization of olefins, particularly ethylene, to produce a polymer with low amount of fines, large average fluff particle size and narrow molecular weight distribution. The catalyst has high activity and good hydrogen response.

    摘要翻译: 齐格勒 - 纳塔催化剂的新合成使用多步骤制备,其包括用相继更强的氯化钛化试剂处理可溶性镁化合物。 该催化剂可以用于烯烃聚合,特别是乙烯的聚合,以产生具有低细粉数,平均绒毛粒度大,分子量分布窄的聚合物。 该催化剂具有高活性和良好的氢气响应。

    Magnesium-diketonate complex derived polyolefin catalysts, method of making same, method of polymerizing with same
    4.
    发明授权
    Magnesium-diketonate complex derived polyolefin catalysts, method of making same, method of polymerizing with same 失效
    碳酸二乙酯复合衍生的聚烯烃催化剂,其制备方法,聚合方法

    公开(公告)号:US06790804B2

    公开(公告)日:2004-09-14

    申请号:US10186262

    申请日:2002-06-27

    IPC分类号: B01J3100

    摘要: A process of forming a polyolefin catalyst component includes contacting a metal compound of the formula MR2 with a diketone to form a metal bis(diketonate) having the formula M(OCRCR′CRO)2, wherein M is a Group IIA or Group VIIB metal, and wherein R and R′ are each hydrocarbyls or substituted hydrocarbyls having from 1 to 20 carbons atoms. Catalyst components, catalysts, polyolefin polymers, catalysts systems, and methods of preparing same are disclosed.

    摘要翻译: 形成聚烯烃催化剂组分的方法包括使式MR2的金属化合物与二酮接触以形成具有式M(OCRCR'CRO)2的金属双(二酮),其中M为IIA族或VIIB族金属, 并且其中R和R'各自为烃基或具有1至20个碳原子的取代烃基。 公开了催化剂组分,催化剂,聚烯烃聚合物,催化剂体系及其制备方法。

    Polymerization of polyethylene having high molecular weight
    5.
    发明授权
    Polymerization of polyethylene having high molecular weight 失效
    具有高分子量聚乙烯的聚合

    公开(公告)号:US06730751B2

    公开(公告)日:2004-05-04

    申请号:US10196614

    申请日:2002-07-16

    IPC分类号: C08F442

    摘要: The present invention includes a bimodal polyethylene polymerization process wherein metallocene catalyst to is used to adjust the hydrogen response of a Ziegler-Natta catalyst. The polymerization may be carried out in a single reactor or in two or more reactors in series, preferably two or more continuously stirred tank reactors in series. In an embodiment having two or more reactors, the Zeigler-Natta catalyst is added to a first reactor and the metallocene catalyst is added to a downstream reactor. In another embodiment having two or more reactors, the Zeigler-Natta catalyst and metallocene catalyst are added to the same reactor, preferably an upstream reactor. A preferred Zeigler-Natta catalyst comprises TiCl4, and a preferred metallocene catalyst comprises bis(cyclopentadienyl) titanium dichloride.

    摘要翻译: 本发明包括双峰聚乙烯聚合方法,其中茂金属催化剂用于调节齐格勒 - 纳塔催化剂的氢响应。 聚合可以在单个反应器中或串联的两个或更多个反应器中进行,优选两个或更多个串联的连续搅拌釜式反应器。 在具有两个或更多个反应器的实施方案中,将Zeigler-Natta催化剂加入到第一反应器中,并将茂金属催化剂加入到下游反应器中。 在具有两个或更多个反应器的另一个实施方案中,将Zeigler-Natta催化剂和茂金属催化剂加入到相同的反应器中,优选加入上游反应器。 优选的Zeigler-Natta催化剂包含TiCl 4,优选的茂金属催化剂包含二氯化二(环戊二烯基)钛。

    Polymerization of polyethylene having high molecular weight
    6.
    发明授权
    Polymerization of polyethylene having high molecular weight 失效
    具有高分子量聚乙烯的聚合

    公开(公告)号:US07256247B2

    公开(公告)日:2007-08-14

    申请号:US10793027

    申请日:2004-03-04

    IPC分类号: C08F4/42 C08F110/02

    摘要: The present invention includes a bimodal polyethylene polymerization process wherein metallocene catalyst to is used to adjust the hydrogen response of a Ziegler-Natta catalyst. The polymerization may be carried out in a single reactor or in two or more reactors in series, preferably two or more continuously stirred tank reactors in series. In an embodiment having two or more reactors, the Zeigler-Natta catalyst is added to a first reactor and the metallocene catalyst is added to a downstream reactor. In another embodiment having two or more reactors, the Zeigler-Natta catalyst and metallocene catalyst are added to the same reactor, preferably an upstream reactor. A preferred Zeigler-Natta catalyst comprises TiCl4, and a preferred metallocene catalyst comprises bis(cyclopentadienyl) titanium dichloride.

    摘要翻译: 本发明包括双峰聚乙烯聚合方法,其中茂金属催化剂用于调节齐格勒 - 纳塔催化剂的氢响应。 聚合可以在单个反应器中或串联的两个或更多个反应器中进行,优选两个或更多个串联的连续搅拌釜式反应器。 在具有两个或更多个反应器的实施方案中,将Zeigler-Natta催化剂加入到第一反应器中,并将茂金属催化剂加入到下游反应器中。 在具有两个或更多个反应器的另一个实施方案中,将Zeigler-Natta催化剂和茂金属催化剂加入到相同的反应器中,优选加入上游反应器。 优选的Zeigler-Natta催化剂包括TiCl 4,优选的茂金属催化剂包含二氯化二(环戊二烯基)钛。

    Catalyst formulation and polymerization processes
    7.
    发明授权
    Catalyst formulation and polymerization processes 失效
    催化剂配方和聚合方法

    公开(公告)号:US06667380B1

    公开(公告)日:2003-12-23

    申请号:US09643540

    申请日:2000-08-22

    IPC分类号: C08F11006

    摘要: Processes for the formulation of Ziegler-type catalysts from a plurality of catalyst components including transition metal, organosilicon electron donor, and organoaluminum co-catalyst components. The components are mixed together in the course of formulating the Ziegler-type catalyst to be charged to an olefin polymerization reactor. Several orders of addition of the catalyst components can be used in formulating the Ziegler catalyst. One involves mixing of the transition metal component with the organoaluminum co-catalyst to formulate a mixture having an aluminum/transition metal mole ratio of at least 200. This mixture is combined with the organosilicon electron donor component to produce a Ziegler-type catalyst formulation having an aluminum/silicon mole ratio of no more than 50. There may be an initial pre-polymerization of the catalyst prior to introducing the catalyst into an olefin polymerization reactor. The mole ratio of aluminum to silicon in the catalyst formulation within the range of 20 to 50 and the mole ratio of silicon to transition metal within the range of 10-20. Relatively short time sequences can be used in formulating the Ziegler-type catalyst. Another order of addition involves initial contact of the organoaluminum co-catalyst and the organosilicon electron donor to provide a mixture having an aluminum to silicon mole ratio of at least 10. This mixture is then combined with the transition metal component having an aluminum/transition metal mole ratio of at least 200.

    摘要翻译: 用于由多种催化剂组分(包括过渡金属,有机硅电子给体和有机铝助催化剂组分)制备齐格勒型催化剂的方法。 在配制要加入到烯烃聚合反应器中的齐格勒型催化剂的过程中将组分混合在一起。 在配制齐格勒催化剂时可以使用几个加入催化剂组分的顺序。 一个涉及将过渡金属组分与有机铝助催化剂混合以配制铝/过渡金属摩尔比至少为200的混合物。该混合物与有机硅电子给体组分结合以产生齐格勒型催化剂制剂,其具有 铝/硅摩尔比不大于50.在将催化剂引入烯烃聚合反应器之前,可以进行催化剂的初始预聚合。 催化剂配方中铝与硅的摩尔比在20至50范围内,硅与过渡金属的摩尔比在10-20范围内。 相对较短的时间序列可用于配制齐格勒型催化剂。 另外的添加顺序包括有机铝助催化剂和有机硅电子给体的初始接触,以提供铝与硅摩尔比至少为10的混合物。然后将该混合物与具有铝/过渡金属的过渡金属组分 摩尔比至少为200。

    Supported metallocene catalysts
    8.
    发明授权
    Supported metallocene catalysts 有权
    负载金属茂催化剂

    公开(公告)号:US06432860B1

    公开(公告)日:2002-08-13

    申请号:US09273819

    申请日:1999-03-22

    IPC分类号: B01J3100

    摘要: Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or which are substituted vinyl compounds, such as styrene and vinyl chloride. One application is the stereospecific propagation of C3-C4 alpha olefins, particularly the polymerization of propylene to produce syndiotactic polypropylene over a supported metallocene catalyst comprising a stereospecific metallocene catalyst component incorporating a metallocene ligand structure having two sterically dissimilar cyclopentadienyl ring structures coordinated to the central transition metal atom. Both of the cyclopentadienyl groups are in a relationship with one another by virtue of bridge or substituent groups, which provide a stereorigid relationship relative to the coordinating transition metal atom to prevent rotation of said ring structures. The metallocene catalyst component and a co-catalyst component, an alumoxane or an alkyl aluminum, are supported on a particulate silica support comprising spheroidal silica particles having an average diameter within the range of 5-40 microns and an average effective pore size within the range of 50-350 angstroms. The particulate silica support contains at least 50 wt. % of the supported catalyst component within the pore volume of the silica support. The particles are preferably toroidal shaped, i.e. donut shaped.

    摘要翻译: 支持的立体定向催化剂和衍生自含有三个或更多个碳原子的乙烯基不饱和单体的聚合物链的立体定向增长的方法,或者是取代的乙烯基化合物如苯乙烯和氯乙烯。 一种应用是C3-C4α烯烃的立体有择性扩增,特别是丙烯在负载金属茂催化剂下产生间同立构聚丙烯的聚合反应,该载体包含立体特异性金属茂催化剂组分,该催化剂组分含有具有两个与中心转移配位的空间不同的环戊二烯基环结构的茂金属配体结构 金属原子。 两个环戊二烯基通过桥或取代基相互关系,其提供相对于配位过渡金属原子的立体刚性关系以防止所述环结构的旋转。 金属茂催化剂组分和助催化剂组分,铝氧烷或烷基铝负载在颗粒状二氧化硅载体上,所述颗粒二氧化硅载体包含平均直径在5-40微米范围内的平均直径范围的球形二氧化硅颗粒,并且平均有效孔径在该范围内 50-350埃。 颗粒状二氧化硅载体含有至少50wt。 负载的催化剂组分的百分比在二氧化硅载体的孔体积内。 颗粒优选为环形,即环形。

    Catalyst efficiency for supported metallocene catalyst
    10.
    发明授权
    Catalyst efficiency for supported metallocene catalyst 有权
    负载金属茂催化剂的催化剂效率

    公开(公告)号:US06225251B1

    公开(公告)日:2001-05-01

    申请号:US09304974

    申请日:1999-05-04

    IPC分类号: B01J3100

    摘要: The invention provides a polymerization process with improved catalyst activity of a metallocene catalyst supported on silica treated with MAO, a process for supporting a metallocene compound on silica treated with MAO, a metallocene catalyst supported on silica treated with MAO within a certain temperature range and a process for making a metallocene catalyst supported on silica treated with MAO. The invention includes supporting the metallocene compound on a MAO-treated silica at a temperature of below 0° C. The supported catalyst is activated with an aluminum alkyl. The catalyst may be prepolymerized in a tubular reactor prior to being introduced into the polymerization reaction zone.

    摘要翻译: 本发明提供了一种聚合方法,其具有改进的催化剂活性,其负载在用MAO处理的二氧化硅上的茂金属催化剂,用MAO处理的二氧化硅上负载茂金属化合物的方法,负载在一定温度范围内用MAO处理的二氧化硅上的茂金属催化剂和 制备用MAO处理的二氧化硅上负载的茂金属催化剂的方法。 本发明包括在低于0℃的温度下在MAO处理的二氧化硅上负载茂金属化合物。负载的催化剂用烷基铝活化。 催化剂可以在引入聚合反应区之前在管式反应器中预聚合。