知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.015 秒)

    Components and catalysts for the polymerization of ethylene
    2.
    发明授权
    Components and catalysts for the polymerization of ethylene 失效
    用于乙烯聚合的组分和催化剂

    公开(公告)号：US5500397A

    公开(公告)日：1996-03-19

    申请号：US181283

    申请日：1994-01-13

    申请人： Illaro Cuffiani ,  Umberto Zucchini, deceased

    发明人： Illaro Cuffiani ,  Umberto Zucchini, deceased

    IPC分类号： C08F4/60 ,  C08F4/635 ,  C08F4/658 ,  C08F10/00 ,  C08F10/02 ,  B01J31/38

    CPC分类号： C08F10/02

    摘要： Solid catalyst component for the polymerization of ethylene including the product of the reaction between:1) the product obtained by reacting:1A) a halide, halogen alcoholate or alcoholate of titanium, vanadium or zirconium;1B) a small quantity of water, and optionally1C) a compound or composition capable of substituting, in compound 1A, one or more alkoxy groups with a halogen atom; and2) a complex having general formula:MgX.sub.2 .multidot.nAlRX.sub.2 .multidot.pAlX.sub.3where X is chlorine or bromine; R is a hydrocarbon radical containing from 1 to 20 carbon atoms; n is a number from 1 to 4; p is a number from 0 to 1, and n+p from 1 to 4;the catalyst component being in the form or particles having a diameter lower than or equal to 20 micrometers, and an average diameter lower than or equal to 10 micrometers.

    摘要翻译： 用于乙烯聚合的固体催化剂组分包括以下反应产物：1）通过反应得到的产物：1A）卤化物，卤素醇化物或钛，钒或锆的醇化物; 1B）少量的水，和任选地1C）能够在化合物1A中用卤素原子取代一个或多个烷氧基的化合物或组合物; 和2）具有以下通式的络合物：MgX 2 x n AlR x 2 x p AlX 3其中X是氯或溴; R是含有1至20个碳原子的烃基; n是从1到4的数字; p是从0到1的数字，并且n + p从1到4; 催化剂组分为直径小于或等于20微米，平均直径小于或等于10微米的形式或颗粒。

    Polymerization process employing lanthanide halide catalyst and polymer produced
    4.
    发明授权
    Polymerization process employing lanthanide halide catalyst and polymer produced 失效
    使用镧系元素卤化物催化剂和聚合物的聚合方法

    公开(公告)号：US5391659A

    公开(公告)日：1995-02-21

    申请号：US062103

    申请日：1993-05-14

    申请人： Ted M. Pettijohn ,  Henry L. Hsieh

    发明人： Ted M. Pettijohn ,  Henry L. Hsieh

    IPC分类号： C08F4/626 ,  C08F10/00 ,  C08F4/635 ,  C08F4/631

    CPC分类号： C08F10/00

    摘要： A polymerization catalyst is formed by producing a solution of a halide of scandium, yttrium, or a rare earth metal and an alcohol; contacting the solution with an organometallic compound to form a soluble complex; and contacting the soluble complex with a halide ion exchanging source. Optionally an ester or an anhydride can also be combined with the halide solution or the soluble complex. The catalyst thus produced can be combined with an organometallic cocatalyst.

    摘要翻译： 通过生产钪，钇或稀土金属和醇的卤化物溶液形成聚合催化剂; 使溶液与有机金属化合物接触以形成可溶性络合物; 并将可溶性络合物与卤离子交换源接触。 任选地，酯或酸酐也可以与卤化物溶液或可溶性络合物组合。 如此生产的催化剂可与有机金属助催化剂组合。

    Process for producing low molecular-weight poly-1-olefins
    6.
    发明授权
    Process for producing low molecular-weight poly-1-olefins 失效
    低分子量聚-1-烯烃的制备方法

    公开(公告)号：US5917100A

    公开(公告)日：1999-06-29

    申请号：US864211

    申请日：1997-05-28

    申请人： Ludwig Bohm ,  Hans-Friedrich Herrmann ,  Joachim Berthold ,  Gerd Hohner ,  Rainer Lecht ,  Hans Joachim Vetter

    发明人： Ludwig Bohm ,  Hans-Friedrich Herrmann ,  Joachim Berthold ,  Gerd Hohner ,  Rainer Lecht ,  Hans Joachim Vetter

    IPC分类号： C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00 ,  C10L1/16 ,  C07C2/24

    CPC分类号： C08F10/00 ,  Y10S526/905

    摘要： A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecular-weight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecular-weight poly-1-olefins.

    摘要翻译： 由粒径为100〜3000nm的烷氧基镁分散体与选自钛，锆，钒，铬的金属化合物反应形成的催化剂，然后与含氯有机铝化合物反应形成的催化剂具有 甚至在分子量调节剂如氢气的存在下也具有非常好的氢响应性和高活性。 因此，催化剂非常适合于生产低分子量聚烯烃。 该催化剂使得生产具有减少的残余灰分含量的蜡成为可能。 通过与该催化剂的悬浮聚合制备的聚合物粉末的大粒径和低细粉含量可以容易地除去悬浮介质并干燥。 此外，催化剂有利地用于溶液聚合，并且由于粒径大，用于制备低分子量聚-1-烯烃的气相聚合。

    Catalysts for the polymerization of olefins
    8.
    发明授权
    Catalysts for the polymerization of olefins 失效
    用于烯烃聚合的催化剂

    公开(公告)号：US5320995A

    公开(公告)日：1994-06-14

    申请号：US957512

    申请日：1992-10-05

    申请人： Luciano Luciani ,  Mario Polesello ,  Federico Milani ,  Renzo Invernizzi ,  Giovanni Soverini

    发明人： Luciano Luciani ,  Mario Polesello ,  Federico Milani ,  Renzo Invernizzi ,  Giovanni Soverini

    IPC分类号： C08F4/652 ,  C08F4/635 ,  C08F4/655 ,  C08F10/00 ,  C08F110/00

    CPC分类号： C08F10/00

    摘要： A catalyst for the polymerization of olefins, containing magnesium, chlorine, aluminium and at least one transition metal, in a dispersed or emulsified form within an inert diluent, is obtained by:contacting, in an inert diluent, a magnesium dialkyl and aluminium trichloride, in a molar ratio equal or almost equal to 2/1, at a temperature lower than 105.degree. C. to obtain a catalyst precursor in a suspended form, or at a temperature higher than 105.degree. C. to form a catalyst precursor in the form of a colloidal emulsion, in the diluent used; andcontacting said suspended or emulsified precursor with at least one compound of a transition metal to form a catalyst in the form of a suspension or emulsion respectively.

    摘要翻译： 通过在惰性稀释剂中将分散或乳化形式的含有镁，氯，铝和至少一种过渡金属的烯烃聚合的催化剂在惰性稀释剂中接触二烷基铝和三氯化铝， 摩尔比等于或几乎等于2/1，在低于105℃的温度下，得到悬浮形式的催化剂前体，或在高于105℃的温度下形成催化剂前体，形式为 的胶体乳液; 并使所述悬浮或乳化的前体与至少一种过渡金属化合物接触以分别形成悬浮液或乳液形式的催化剂。

    Gas phase olefin polymerization process
    9.
    发明授权
    Gas phase olefin polymerization process 失效
    气相烯烃聚合工艺

    公开(公告)号：US5283278A

    公开(公告)日：1994-02-01

    申请号：US681884

    申请日：1991-04-08

    申请人： Erick Daire ,  John G. Speakman

    发明人： Erick Daire ,  John G. Speakman

    IPC分类号： C08F4/635 ,  C08F2/34 ,  C08F2/44 ,  C08F4/60 ,  C08F4/631 ,  C08F4/632 ,  C08F4/639 ,  C08F4/642 ,  C08F10/00 ,  C08F10/02 ,  C08K5/09

    CPC分类号： C08F10/00 ,  Y10S526/901 ,  Y10S526/903 ,  Y10S526/904

    摘要： The present invention relates to an alpha-olefin prepolymer catalytically active in an alpha-olefin (co-)polymerization comprising a transition metal, an organometallic compound and an antistatic agent. The prepolymer can be prepared by contacting the antistatic agent with a catalyst comprising the transition metal and the organometallic compound before or during an alpha-olefin prepolymerization. It can also be prepared by contacting the antistatic agent with an alpha-olefin prepolymer after a prepolymerization. It can also be prepared by a combination of the two methods. The prepolymer can be introduced into a gas phase (co-)polymerization medium for preparing polyolefin directly in a dry powder form, with a reduced amount of sheeting and agglomerates.

    摘要翻译： 本发明涉及在包含过渡金属，有机金属化合物和抗静电剂的α-烯烃（共）聚合中催化活性的α-烯烃预聚物。 预聚物可以通过在α-烯烃预聚合之前或期间使抗静电剂与包含过渡金属和有机金属化合物的催化剂接触来制备。 还可以通过在预聚合之后使抗静电剂与α-烯烃预聚物接触来制备。 它也可以通过两种方法的组合来制备。 可以将预聚物引入气相（共）聚合介质中，直接以干粉形式制备聚烯烃，减少数量的片材和附聚物。