利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.021 秒)

    Multi-stage process for producing multi-modal linear low density polyethylene
    1.
    发明授权
    Multi-stage process for producing multi-modal linear low density polyethylene 有权
    生产多模式线性低密度聚乙烯的多阶段工艺

    公开(公告)号：US08409681B2

    公开(公告)日：2013-04-02

    申请号：US13126496

    申请日：2010-02-22

    申请人： Thomas Garoff ,  Paivi Waldvogel ,  Kalle Kallio ,  Virginie Eriksson ,  Aki Aittola ,  Esa Kokko

    发明人： Thomas Garoff ,  Paivi Waldvogel ,  Kalle Kallio ,  Virginie Eriksson ,  Aki Aittola ,  Esa Kokko

    IPC分类号： B32B1/08 ,  C08F2/14 ,  C08F2/34 ,  C08F210/14 ,  C08F4/685

    CPC分类号： C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F2410/03 ,  Y10T428/139 ,  C08F4/6357 ,  C08F4/685 ,  C08F2/001 ,  C08F2500/07 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/18 ,  C08F210/14 ,  C08F2500/08

    摘要： A process is disclosed for producing a multi-modal linear low density polyethylene in at least two staged reactors connected in series, comprising (i) polymerizing in a first slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A); and (ii) polymerizing in a second gas or slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B). The Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of formula (I) b) an aluminum compound of formula (II); and c) a vanadium compound and a titanium compound having a molar ratio (V:Ti) from 10:90 to 90:10; and 2) one or more organometallic cocatalvsts of formula (III). The linear low density polyethylene shows an improved comonomer composition distribution Formulas (I), (II), and (III) are described herein.

    摘要翻译： 公开了一种用于在至少两个分级反应器中串联生产多模式线性低密度聚乙烯的方法，其包括（i）在第一浆液阶段中聚合乙烯单体与齐格勒 - 纳塔聚合催化剂体系以获得第一聚乙烯 级分组分（A）; 和（ii）在齐格勒 - 纳塔聚合催化剂体系中在第二气体或浆料相阶段中聚合乙烯单体以获得第二聚乙烯级分组分（B）。 齐格勒 - 纳塔聚合催化剂体系包括：1）通过使至少a）使式（I）的Mg-醇合物络合物b）式（II）的铝化合物与式 和c）钒化合物和摩尔比（V:Ti）为10:90至90:10的钛化合物; 和2）式（III）的一种或多种有机金属助催化剂。 线性低密度聚乙烯显示改进的共聚单体组成分布本文描述了式（I），（II）和（III）。

    Process for the polymerization of olefines
    4.
    发明授权
    Process for the polymerization of olefines 失效
    烯烃聚合方法

    公开(公告)号：US06545106B1

    公开(公告)日：2003-04-08

    申请号：US08851742

    申请日：1997-05-06

    申请人： Jiang Bian

    发明人： Jiang Bian

    IPC分类号： C08F444

    CPC分类号： C08F10/00 ,  C08F4/6355 ,  C08F4/6357

    摘要： Process for the polymerization of olefins, according to which at least one olefin is placed in contact with a catalytic system comprising: a) a solid catalytic complex based on magnesium, transition metal and halogen, the said catalytic complex being prepared by reacting, in a first step, at least one magnesium compound with at least one compound of a transition metal from group IVB or VB of the Periodic Table, until a liquid complex is obtained, and, in a subsequent step, by precipitating the said liquid complex using a halogen-containing organoaluminium compound of general formula AlRnX3-n in which R is a hydrocarbon radical, X is a halogen and n is less than 3, in order to collect a solid catalytic complex, and b) an organometallic compound of a metal from groups IA, IIA, IIB, IIIA and IVA of the Periodic Table, c) at least one electron donor used after the first step in the preparation of the solid catalytic complex leading to the production of a liquid complex.

    摘要翻译： 烯烃聚合方法，根据该方法将至少一种烯烃与催化体系接触，所述催化体系包含：a）基于镁，过渡金属和卤素的固体催化络合物，所述催化络合物通过以下步骤制备： 至少一种镁化合物与至少一种元素周期表IVB或VB族过渡金属的化合物直到获得液体络合物，并且在随后的步骤中，通过使用卤素将所述液体络合物沉淀 含有的通式AlRnX3-n的有机铝化合物，其中R是烃基，X是卤素，n小于3，以便收集固体催化络合物，和b）来自基团IA的金属的有机金属化合物， IIA，IIB，IIIA和IVA，c）在制备固体催化剂络合物之后第一步中使用的至少一种电子给体，导致制备液体络合物。

    MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE
    7.
    发明申请
    MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE 有权
    用于生产多模式线性低密度聚乙烯的多级方法

    公开(公告)号：US20110263801A1

    公开(公告)日：2011-10-27

    申请号：US13126496

    申请日：2010-02-22

    申请人： Thomas Garoff ,  Päivi Waldvogel ,  Kalle Kallio ,  Virginie Eriksson ,  Aki Aittola ,  Esa Kokko

    发明人： Thomas Garoff ,  Päivi Waldvogel ,  Kalle Kallio ,  Virginie Eriksson ,  Aki Aittola ,  Esa Kokko

    IPC分类号： C08F10/02 ,  C08F4/685 ,  C08F2/34 ,  C08F2/12

    CPC分类号： C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F2410/03 ,  Y10T428/139 ,  C08F4/6357 ,  C08F4/685 ,  C08F2/001 ,  C08F2500/07 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/18 ,  C08F210/14 ,  C08F2500/08

    摘要： Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR1)2-n(R1)n, wherein each R1 independently represents a C1-C20 hydrocarbyl group and 0

    摘要翻译： 用于在至少两个串联反应器中连续串联生产多模式线性低密度聚乙烯的多级聚合方法，包括至少（i）在第一浆料相阶段聚合乙烯单体和任选的一种或多种α-烯烃共聚单体 在齐格勒 - 纳塔聚合催化剂体系存在下，得到第一聚乙烯级分组分（A）（ⅱ）在第二种气相或淤浆相阶段中聚合乙烯单体和一种或多种α-烯烃共聚单体，在 齐格勒 - 纳塔聚合催化剂体系，以获得第二聚乙烯部分组分（B），由此齐格勒 - 纳塔聚合催化剂体系包括：1）通过使至少与下式接触形成的固体前催化剂：a）式 ）：Mg（OR 1）2-n（R 1）n，其中每个R 1独立地表示C 1 -C 20烃基且0

    Silica supported transition metal catalyst
    10.
    发明授权
    Silica supported transition metal catalyst 失效
    二氧化硅负载过渡金属催化剂

    公开(公告)号：US06747113B1

    公开(公告)日：2004-06-08

    申请号：US09715566

    申请日：2000-11-17

    申请人： Lee Spencer ,  Miriam P. Ripplinger ,  Brian W. S. Kolthammer ,  Jeffrey J. Wooster

    发明人： Lee Spencer ,  Miriam P. Ripplinger ,  Brian W. S. Kolthammer ,  Jeffrey J. Wooster

    IPC分类号： C08F21000

    CPC分类号： C08F10/00 ,  C08F110/02 ,  C08L23/04 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02 ,  C08F4/6555 ,  C08F4/6357 ,  C08L2666/04 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/24

    摘要： A polymer produced by a transition metal containing catalyst useful for the polymerization of &agr;-olefins is prepared by (A) forming in an inert atmosphere which excludes oxygen and moisture a slurry of (1) a porous inorganic oxide support material selected from the group consisting of silica, alumina, or a combination of silica and alumina, said support material containing not greater than about 5 millimoles of hydroxyl groups per gram of support material and a particle size not greater than about 10 microns and a surface area of from about 50 to about 800 m2/g in an inert organic liquid medium; (B) mixing said slurry with (2) an alkoxide and stirring the resultant mixture at a temperature of from about −20° C. to about 120° C. for a time sufficient to saturate the surface of the support material; (C) mixing the product form (B) with (3) a titanium compound or a combination of a titanium compound and (4) a vanadium compound and stirring the resultant mixture at a temperature of from about −20° C. to about 120° C. for a time sufficient to allow complete reaction of the titanium compound and the vanadium compound with the organomagnesium moieties remaining on the solid support; (D) mixing the product from (C) with an inert organic solution of (5) a Group IIIA metal alkyl halide at a temperature of from about −20° C. to about 120° C. for a time sufficient to complete the reduction of the titanium and vanadium, if present, compounds to their final oxidation state. Ethylene/alpha-olefin copolymers which have greater than 17 percent high density fraction and a Mw/Mn ratio of less than about 3.6 are shown to be useful in making cast films which have good stretchability and good puncture resistance. Copolymers of the present invention having the specified properties are especially useful in making the films.

    摘要翻译： 由用于α-烯烃聚合的含过渡金属的催化剂制备的聚合物是通过（A）在惰性气氛中形成的，其中不包括氧气和水分，（1）多孔无机氧化物载体材料的浆料选自 的二氧化硅，氧化铝或二氧化硅和氧化铝的组合，所述载体材料每克载体材料含有不大于约5毫摩尔羟基，粒径不大于约10微米，表面积为约50至 在惰性有机液体介质中约800m 2 / g; （B）将所述浆料与（2）醇盐混合并在约-20℃至约120℃的温度下搅拌所得混合物足以使载体材料表面饱和的时间; （C）将产品形式（B）与（3）钛化合物或钛化合物和（4）钒化合物的组合混合并在约-20℃至约120℃的温度下搅拌所得混合物 在足以允许钛化合物和钒化合物与残留在固体载体上的有机镁部分完全反应的时间; （D）将来自（C）的产物与（5）IIIA族金属烷基卤的惰性有机溶液在约-20℃至约120℃的温度下混合足以完成还原的时间 的钛和钒（如果存在）化合物达到其最终氧化态。 显示出具有大于17％的高密度分数和小于约3.6的Mw / Mn比的乙烯/α-烯烃共聚物可用于制备具有良好的拉伸性和良好的耐穿刺性的流延薄膜。 具有特定性质的本发明的共聚物在制备膜中特别有用。