Process for producing polyolefins and polyolefin catalyst
    291.
    发明授权
    Process for producing polyolefins and polyolefin catalyst 失效
    生产聚烯烃和聚烯烃催化剂的方法

    公开(公告)号:US06541413B1

    公开(公告)日:2003-04-01

    申请号:US08459526

    申请日:1995-06-02

    Abstract: The present invention provides a process for preparing polyolefins having a multimodal or at least bimodal molecular weight distribution by contacting in a reaction mixture under polymeriation conditions at least one olefin and a catalyst system comprising a supported catalyst-component comprising an alumoxane and at least two metallocenes containing the same transition metal and selected from the group consisting of mono, di, and tri-cyclopentadienyls and substituted cyclopentadienyls of a transition metal and wherein at least one of the metallocenes is bridged and at least one of the metallocenes is unbridged.

    Abstract translation: 本发明提供了一种制备具有多峰或至少双峰分子量分布的聚烯烃的方法,其通过在反应混合物中在聚合条件下使至少一种烯烃和包含负载型催化剂组分的催化剂体系接触,所述催化剂组分包含铝氧烷和至少两种茂金属 其含有相同的过渡金属,并且选自过渡金属的单,二和三环戊二烯基和取代的环戊二烯基,并且其中至少一个金属茂被桥接并且至少一个金属茂是未桥接的。

    Synthesis of functionalized lithium initiator
    293.
    发明授权
    Synthesis of functionalized lithium initiator 失效
    官能化锂引发剂的合成

    公开(公告)号:US06518214B2

    公开(公告)日:2003-02-11

    申请号:US09865326

    申请日:2001-05-25

    CPC classification number: C07F1/02 C07F7/0803 C07F7/2208 C07F9/5068 C08F4/48

    Abstract: This invention discloses a process for making dilithium initiators in high purity. This process can be conducted in the absence of amines which is desirable since amines can act as modifiers for anionic polymerizations. The dilithium compounds made are highly desirable because they are soluble in aromatic solvents. The present invention more specifically discloses a process for synthesizing a dilithium initiator which comprises reacting disopropenylbenzene with a tertiary alkyl lithium compound in an aromatic solvent at a temperature which is within the range of about 0° C. to about 100° C. The present invention further discloses a process for synthesizing m-di-(1-methyl-3,3-dimethylbutyllithio)benzene which comprises reacting diisopropenylbenzene with tertiary-butyllithium in an aromatic solvent at a temperature which is within the range of about 0° C. to about 100° C. The present invention also discloses a process for synthesizing a functionalized lithium initiator which comprises the steps of (1) reacting diisopropenylbenzene with a tertiary alkyl lithium compound in an aromatic solvent at a temperature which is within the range of about 0° C. to about 100° C. to produce a dilithium initiator; and (2) reacting the dilithium initiator with a halide compound selected from the group consisting of (a) tin halides, (b) silicon halides, (c) amine halides, and (d) phosphorus halides of the structural formula: wherein X represents a halogen atom, and wherein R1, R2, and R3 represent alkyl groups, aryl groups, and/or alkoxy groups containing from 1 to about 10 carbon atoms.

    Abstract translation: 本发明公开了一种制备高纯度二锂引发剂的方法。 该方法可以在不存在胺的情况下进行,因为胺可以用作阴离子聚合的改性剂。 所制备的二锂化合物是非常需要的,因为它们可溶于芳族溶剂。 本发明更具体地公开了一种合成二锂引发剂的方法,其包括在芳族溶剂中在约0℃至约100℃的温度范围内使二丙烯基苯与叔烷基锂化合物反应。本发明 进一步公开了一种合成间二 - (1-甲基-3,3-二甲基丁基二硫基)苯的方法,该方法包括使二异丙烯基苯与叔丁基锂在芳族溶剂中在约0℃至约 本发明还公开了一种合成官能化锂引发剂的方法,该方法包括以下步骤:(1)使二异丙烯基苯与叔烷基锂化合物在芳族溶剂中在约0℃的范围内 至约100℃以产生二锂引发剂; 和(2)使二锂引发剂与选自(a)卤化锡,(b)卤化硅,(c)胺卤化物和(d)以下结构式的卤化磷的卤化物反应:其中X表示 卤素原子,并且其中R 1,R 2和R 3表示含有1至约10个碳原子的烷基,芳基和/或烷氧基。

    Prepolymerized catalyst components for the polymerization of olefins
    295.
    发明授权
    Prepolymerized catalyst components for the polymerization of olefins 有权
    用于烯烃聚合的预聚催化剂组分

    公开(公告)号:US06468938B1

    公开(公告)日:2002-10-22

    申请号:US09273624

    申请日:1999-03-23

    CPC classification number: C08F10/00 C08F4/6465 C08F4/651 C08F4/6543 C08F4/6492

    Abstract: The invention provides new prepolymerized catalyst components for the (co)polymerization of olefins CH2═CHR, wherein R is hydrogen or a C1-C12 alkyl group, characterized by comprising a solid catalyst component, comprising Ti, Mg, halogen and an electron donor compound, being capable of yielding, under standard polymerization conditions, a propylene homopolymer having an insolubility in xylene at 25° C. higher than 90%, which is prepolymerized with ethylene to such an extent that the amount of the ethylene prepolymer is up to 100 g per g of said solid catalyst component. These solid catalyst components display to obtain a high catalyst activity, a high isotactic index, and are not affected by aging.

    Abstract translation: 本发明提供用于烯烃CH 2 = CHR(其中R是氢或C 1 -C 12烷基)(共)聚合的新的预聚合催化剂组分,其特征在于包括固体催化剂组分,其包含Ti,Mg,卤素和电子给体化合物 在标准聚合条件下能够在25℃下在二甲苯中具有不溶性的丙烯均聚物高于90%,其与乙烯预聚合使得乙烯预聚物的量达到100g 每克所述固体催化剂组分。 显示这些固体催化剂组分以获得高催化剂活性,高全同立构指数,并且不受老化的影响。

    Solid MAO/metallocene catalyst complex for propylene polymerization
    296.
    发明授权
    Solid MAO/metallocene catalyst complex for propylene polymerization 失效
    用于丙烯聚合的固体MAO /茂金属催化剂络合物

    公开(公告)号:US06468936B1

    公开(公告)日:2002-10-22

    申请号:US08055267

    申请日:1993-04-28

    Abstract: The catalyst is a mixture of metallocene catalyst component of the general formula: R″b(CpR4)(CpR′4)MR*v−2 where R″ is a bridge imparting stereorigidity to the structure to the metallocene by connecting the two cyclopentadienyl rings, b is 0 or 1, Cp is a cyclopentadienyl ring, R and R′ are substituents on the cyclopentadienyl rings and can be a hydride or a hydrocarbyl from 1-9 carbon atoms, each R and R′ being the same or different, each (CpR4) and (CpR′4) being the same or different, M is a Group IIIB, IVB, VB or VIB metal, R* is a hydride, a halogen or a hydrocarbyl from 1-20 carbon atoms, v is the valence of M and an aluminoxane co-catalyst in a solvent. The solvent is removed from the mixture of metallocene and aluminoxane to form a solid. The solid mixture is ground and delivered into a reactor in a mineral oil slurry.

    Abstract translation: 催化剂是以下通式的茂金属催化剂组分的混合物:其中R“是通过连接两个环戊二烯基环向茂金属赋予立体刚性的桥,b为0或1,Cp为环戊二烯基环,R和 R'是环戊二烯基环上的取代基,可以是氢化物或1-9个碳原子的烃基,每个R和R'相同或不同,各自(CpR4)和(CpR'4)相同或不同, M是IIIB,IVB,VB或VIB族金属,R *是氢化物,卤素或1-20个碳原子的烃基,v是在溶剂中的烷氧基铝催化剂的价态。 从茂金属和铝氧烷的混合物中除去溶剂以形成固体。 将固体混合物研磨并输送到矿物油浆料的反应器中。

    Supported metallocene catalysts
    299.
    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

    Abstract: 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.

    Abstract translation: 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。

    Process for introducing a functionality
    300.
    发明授权
    Process for introducing a functionality 有权
    介绍功能的过程

    公开(公告)号:US06426315B1

    公开(公告)日:2002-07-30

    申请号:US09380105

    申请日:2000-03-14

    CPC classification number: C08B37/0039 B01J20/3212 B01J20/3234 C08B37/0021

    Abstract: Process for, in layers of a porous matrix, exhibiting the groups A, introducing a functionality using a reagent I, introducing the functionality by a reaction with the groups A. The characterizing feature is that the matrix is contacted with a functional deficiency of reagent I and that conditions and reagent I are chosen so that the reaction between reagent I and the groups A is more rapid than diffusion of reagent I in the matrix.

    Abstract translation: 在多孔基质的层中,显示基团A的方法,使用试剂I引入官能团,通过与基团A的反应引入官能团。表征特征是基质与试剂I的功能缺陷接触 并且选择条件和试剂I,使得试剂I和A组之间的反应比试剂I在基质中的扩散更快。

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