Process for making ethylene polymer blends with controlled long-chain branching
    1.
    发明授权
    Process for making ethylene polymer blends with controlled long-chain branching 有权
    制备具有受控长链支化的乙烯聚合物共混物的方法

    公开(公告)号:US08697808B2

    公开(公告)日:2014-04-15

    申请号:US12941149

    申请日:2010-11-08

    IPC分类号: C08L23/04 C08L23/06

    CPC分类号: C08L23/06 C08L23/0815

    摘要: A high-temperature solution process for making an ethylene polymer blend having a controlled degree of long-chain branching is disclosed. Ethylene is polymerized in the presence of a first Ziegler-Natta catalyst comprising titanium, magnesium, and aluminum in the absence of hydrogen to produce a first ethylene polymer component having substantial long-chain branching. A second ethylene polymer component having little or no long-chain branching is also prepared. Both polymerizations are performed at a temperature from 140° C. to 250° C. The first and second ethylene polymer components are combined to give a polymer blend. The degree of long-chain branching in the blend is controlled by adjusting the relative amounts of the first and second ethylene polymer components. The invention enables the preparation of valuable products having a pre-determined degree of long-chain branching using readily available Zeigler-Natta catalysts, commercially practiced techniques, and conventional equipment.

    摘要翻译: 公开了制备具有受控程度的长链支化的乙烯聚合物共混物的高温溶液方法。 在不存在氢气的情况下,乙烯在包含钛,镁和铝的第一齐格勒 - 纳塔催化剂存在下聚合以产生具有大量长链支化的第一乙烯聚合物组分。 还制备了具有很少或不具有长链支化的第二乙烯聚合物组分。 两种聚合在140℃至250℃的温度下进行。将第一和第二乙烯聚合物组分混合以得到聚合物共混物。 通过调节第一和第二乙烯聚合物组分的相对量来控制共混物中的长链支化度。 本发明能够使用容易获得的Zeigler-Natta催化剂,商业实践的技术和常规设备制备具有预定程度的长链分支的有价值的产品。

    Preparing multimodal polyethylene having controlled long chain branching distribution
    2.
    发明申请
    Preparing multimodal polyethylene having controlled long chain branching distribution 审中-公开
    制备具有受控长支链分布的多峰聚乙烯

    公开(公告)号:US20090048402A1

    公开(公告)日:2009-02-19

    申请号:US11894016

    申请日:2007-08-17

    IPC分类号: C08L23/06

    摘要: A process to prepare a multimodal polyethylene with controlled LCB distribution is disclosed. In the first stage, ethylene is polymerized in the presence of a Ziegler catalyst that results in a homopolyethylene component having a higher LCB concentration. In the second stage, ethylene is copolymerized with a 1-olefin in the presence of the Ziegler catalyst and a lower concentration of hydrogen resulting in a copolymer component with a lower LCB concentration. The homopolyethylene component and the copolymer component are combined to form a novel multimodal polyethylene.

    摘要翻译: 公开了制备具有受控LCB分布的多峰聚乙烯的方法。 在第一阶段中,乙烯在齐格勒催化剂存在下聚合,导致具有较高LCB浓度的均聚乙烯组分。 在第二阶段中,乙烯在齐格勒催化剂存在下与1-烯烃共聚,较低浓度的氢气导致具有较低LCB浓度的共聚物组分。 将均聚乙烯组分和共聚物组分合并形成新的多峰聚乙烯。

    Desulfurization process
    3.
    发明授权
    Desulfurization process 有权
    脱硫工艺

    公开(公告)号:US07314545B2

    公开(公告)日:2008-01-01

    申请号:US10754952

    申请日:2004-01-09

    IPC分类号: C10G45/00

    CPC分类号: C10G53/14

    摘要: This invention is a method of purifying fuels containing organosulfur impurities. The fuel is oxidized with an organic hydroperoxide in the presence of an oxidation catalyst to form a sulfone product, followed by extraction of the sulfone product by solid-liquid or liquid-liquid extraction. The fuel is then contacted with a decomposition catalyst to remove the residual organic hydroperoxide from the fuel.

    摘要翻译: 本发明是一种净化含有有机硫杂质的燃料的方法。 在氧化催化剂的存在下,用有机氢过氧化物氧化燃料以形成砜产物,然后通过固 - 液或液 - 液萃取萃取砜产物。 然后燃料与分解催化剂接触以从燃料中除去残余的有机氢过氧化物。

    Prealkylated olefin polymerization catalysts and olefin polymerization employing such catalysts
    5.
    发明授权
    Prealkylated olefin polymerization catalysts and olefin polymerization employing such catalysts 失效
    使用这种催化剂的预烷基化烯烃聚合催化剂和烯烃聚合

    公开(公告)号:US06762255B2

    公开(公告)日:2004-07-13

    申请号:US10163703

    申请日:2002-06-06

    IPC分类号: C08F444

    摘要: Prealkylation of a supported catalyst system comprising a transition metal or inner transition metal complex precatalyst and a bulky, non-coordinating anion on an inorganic support by treatment with a solution of metal alkyl in a ratio of metal of metal alkyl to transition metal or inner transition metal of precatalyst less than 20:1, and in an amount of solution insufficient to form a paste or dispersion provides supported catalysts of high olefin polymerization activity which promote production of polyolefins of low polydispersity and improved morphology.

    摘要翻译: 通过用金属烷基金属与过渡金属或内部转变的比例的金属烷基溶液处理,在无机载体上包含过渡金属或内过渡金属络合物预催化剂和体积大的非配位阴离子的负载型催化剂体系的预烷基化 金属的预催化剂小于20:1,并且在不足以形成糊或分散体的溶液量中,提供了高烯烃聚合活性的负载催化剂,其促进低多分散性和改进形态的聚烯烃的生产。

    Vanadium-containing catalyst system
    7.
    发明授权
    Vanadium-containing catalyst system 失效
    含钒催化剂体系

    公开(公告)号:US5534472A

    公开(公告)日:1996-07-09

    申请号:US412633

    申请日:1995-03-29

    摘要: A vanadium-containing catalyst system particularly suited to the polymerization of blow moldable olefin polymers. The catalyst system includes a supported, first catalyst component prepared by contacting preheated silica, with (1) a compound or complex which includes at least one carbon to magnesium covalent bond and (2) a compound which includes at least one carbon to Group III metal covalent bond. The sequence of contact of the silica with compound or complex (1) and compound (2) is optional. However, unless the compound or complex (1) and the compound (2) contact the silica simultaneously, the product of this contact is next contacted with whichever of compound (1) or (2) does not initially contact the silica. The product of the step of contacting with compounds (1) and (2) is contacted with a vanadium compound which includes at least one halogen atom. Finally, the product of the vanadium compound contacting step is contacted with an alcohol. A second component of the catalyst system is an organoaluminum compound cocatalyst. The catalyst system also includes a halocarbon compound promoter as a third catalyst component.

    摘要翻译: 一种特别适用于可吹塑烯烃聚合物聚合的含钒催化剂体系。 催化剂体系包括通过使预热的二氧化硅与(1)包含至少一个碳 - 镁共价键的化合物或络合物接触而制备的负载的第一催化剂组分和(2)包含至少一个碳至III族金属的化合物 共价键。 二氧化硅与化合物或络合物(1)和化合物(2)的接触顺序是任选的。 然而,除非化合物或络合物(1)和化合物(2)同时与二氧化硅接触,否则接触的产物接下来与化合物(1)或(2)中最初不接触二氧化硅的化合物接触。 与化合物(1)和(2)接触的步骤的产物与包含至少一个卤素原子的钒化合物接触。 最后,将钒化合物接触步骤的产物与醇接触。 催化剂体系的第二个组分是有机铝化合物助催化剂。 催化剂体系还包括作为第三催化剂组分的卤代烃化合物促进剂。

    Vanadium based olefin polymerization catalyst
    8.
    发明授权
    Vanadium based olefin polymerization catalyst 失效
    钒基烯烃聚合催化剂

    公开(公告)号:US5374597A

    公开(公告)日:1994-12-20

    申请号:US17121

    申请日:1993-02-12

    摘要: Catalysts useful in olefin polymerization are a mixture of (a) (i) one or more compounds Zn(X.sup.1).sub.2 and one or more compounds Al(R.sup.1).sub.3, or (ii) Zn(X.sup.1).sub.2.2Al(R.sup.1).sub.3, wherein X.sup.1 is halide and R.sup.1 is C.sub.1-12 hydrocarbyl; and (b) one or more of V(X.sup.2).sub.c (OR.sup.2).sub.b-c, VO(X.sup.3).sub.d (OR.sup.3).sub.3-d, or VO(X.sup.4).sub.2, wherein X.sup.2, X.sup.3 and X.sup.4 are halogen, R.sup.2 and R.sup.3 are C.sub.1-18 hydrocarbyl, b is 3-4, c is 0-b, and d is 0-3; and can contain (c) one or more of M(R.sup.5).sub.e (X.sup.5).sub.3-e, Al.sub.2 (R.sup.5).sub.3 (X.sup.5).sub.3 or Mg(R.sup.6).sub.f Y.sub.2-f, wherein X.sup.1 and X.sup.2 are halide, R.sup.1, R.sup.5, R.sup.6 and R.sup.9 are C.sub.1- 12 hydrocarbyl, M is Al or B, e is 0-3, Y is halide, O--(C.sub.1-12 hydrocarbyl) or N(SiR.sup.9.sub.3).sub.2, and f is 0-2.

    摘要翻译: 可用于烯烃聚合的催化剂是(a)(i)一种或多种化合物Zn(X1)2和一种或多种化合物Al(R1)3或(ii)Zn(X1)2.2Al(R1)3, 其中X1是卤化物,R1是C1-12烃基; 和(b)V(X2)c(OR2)bc,VO(X3)d(OR3)3-d或VO(X4)2中的一个或多个,其中X2,X3和X4为卤素,R2和R3为 C1-18烃基,b为3-4,c为0-b,d为0-3; 并且可以含有(c)M(R5)e(X5)3-e,Al2(R5)3(X5)3或Mg(R6)fY2-f中的一种或多种,​​其中X1和X2是卤素,R1,R5 ,R6和R9是C1-12烃基,M是Al或B,e是0-3,Y是卤素,O-(C1-12烃基)或N(SiR93)2,f是0-2。

    Mixed chromium catalysts and polymerizations utilizing same
    9.
    发明授权
    Mixed chromium catalysts and polymerizations utilizing same 失效
    混合铬催化剂和利用其的聚合

    公开(公告)号:US5310834A

    公开(公告)日:1994-05-10

    申请号:US992289

    申请日:1992-12-16

    IPC分类号: C08F10/00 C08F110/02 C08F4/24

    CPC分类号: C08F10/00 C08F110/02

    摘要: Mixed catalyst compositions comprised of a first supported chromium-containing catalyst component and a second supported chromium-containing catalyst component and which additionally have one or more metallic or non-metallic catalytic agents associated therewith are provided. The additional metallic or non-metallic elements associated with the catalyst components can be aluminum, titanium, zirconium, boron, phosphorous or combinations thereof. The pore volume of the silica supports used for the first and second catalyst components differs by at least 0.3 cc/g. The mixed catalyst compositions of the invention are useful for the preparation of polyolefins. They are particularly useful of polymerization of ethylene in particle form polymerizations to produce high density polyethylene blow molding resins having good processability and physical properties. The improved particle form polymerization process and products obtained thereby using the above-described mixed catalyst compositions are also described.

    摘要翻译: 提供由第一负载的含铬催化剂组分和第二负载的含铬催化剂组分组成的并且另外具有与其相关的一种或多种金属或非金属催化剂的混合催化剂组合物。 与催化剂组分相关的另外的金属或非金属元素可以是铝,钛,锆,硼,磷或它们的组合。 用于第一和第二催化剂组分的二氧化硅载体的孔体积至少为0.3cc / g。 本发明的混合催化剂组合物用于制备聚烯烃。 它们特别可用于以颗粒形式聚合的乙烯聚合,以生产具有良好加工性能和物理性能的高密度聚乙烯吹塑树脂。 还描述了改进的颗粒形式聚合方法和由此使用上述混合催化剂组合物获得的产物。

    Olefin polymerization method
    10.
    发明授权

    公开(公告)号:US5202397A

    公开(公告)日:1993-04-13

    申请号:US923147

    申请日:1992-07-31

    摘要: A multiple site solid catalyst component capable of producing polyolefins having a broad or multimodal molecular weight distribution, such as a bimodal molecular weight distribution, is prepared by contacting a particulate solid support with a zirconium compound or complex to bind the zirconium compound or complex to the support, optionally followed by contacting the supported zirconium compound or complex with a Lewis acid to produce an intermediate product, optionally isolating and washing the supported zirconium compound or complex or resulting intermediate product to remove soluble by-products therefrom, and reacting the washed or unwashed supported zirconium compound or complex or intermediate product with a titanium or vanadium compound to produce a solid catalyst component.