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49 条记录 (耗时 0.042 秒)

    Ethylene/propylene copolymer rubbers
    41.
    发明授权
    Ethylene/propylene copolymer rubbers 失效
    乙烯/丙烯共聚物橡胶

    公开(公告)号：US5480850A

    公开(公告)日：1996-01-02

    申请号：US83988

    申请日：1993-06-28

    申请人： Kevin J. Cann ,  James W. Nicoletti ,  Sergey A. Vasnetsov

    发明人： Kevin J. Cann ,  James W. Nicoletti ,  Sergey A. Vasnetsov

    IPC分类号： C08F2/34 ,  C08F4/60 ,  C08F4/68 ,  C08F8/00 ,  C08F10/00 ,  C08F210/00 ,  C08F210/02 ,  C08F210/16

    CPC分类号： C08F10/00

    摘要： A catalyst system comprising:(a) a catalyst precursor consisting essentially of the reaction product of vanadium (acetylacetonate).sub.3 and a compound having the formula AlR.sub.(3-a) X.sub.a wherein each R is independently alkyl having 1 to 14 carbon atoms; each X is independently chlorine, bromine, or iodine; and a is 1 or 2; the atomic ratio of aluminum to vanadium in the precursor is 1:1 to 3:1; and the oxidation state of the vanadium in the reaction product is plus 2;(b) optionally, a support for said precursor; and(c) a halide substituted hydrocarbyl aluminum cocatalyst; and(d) optionally, a promoter, which is a chlorinated ester having at least 2 chlorine atoms; a saturated or unsaturated aliphatic halocarbon having at least 3 carbon atoms and at least 6 halogen atoms; or a haloalkyl substituted aromatic hydrocarbon wherein the haloalkyl substituent has at least 3 halogen atoms.

    摘要翻译： 一种催化剂体系，包括：（a）主要由钒（乙酰丙酮）钒和具有式AlR（3-a）Xa的化合物的反应产物组成的催化剂前体，其中每个R独立地为具有1至14个碳原子的烷基; 每个X独立地是氯，溴或碘; a为1或2; 前体中铝与钒的原子比为1：1〜3：1; 反应产物中钒的氧化态为加2; （b）任选地，所述前体的载体; 和（c）卤化物取代的烃基铝助催化剂; 和（d）任选地，具有至少2个氯原子的氯化酯的促进剂; 具有至少3个碳原子和至少6个卤素原子的饱和或不饱和脂族卤代烃; 或卤代烷基取代的芳族烃，其中卤代烷基取代基具有至少3个卤素原子。

    Homogenous polyethylenes and ethylene/propylene copolymers rubbers
    43.
    发明授权
    Homogenous polyethylenes and ethylene/propylene copolymers rubbers 失效
    均聚聚乙烯和乙烯/丙烯共聚物橡胶

    公开(公告)号：US5416053A

    公开(公告)日：1995-05-16

    申请号：US83664

    申请日：1993-06-28

    申请人： Xinlai Bai ,  Kevin J. Cann

    发明人： Xinlai Bai ,  Kevin J. Cann

    IPC分类号： C08F2/34 ,  C08F4/60 ,  C08F4/68 ,  C08F10/00 ,  C08F10/02 ,  C08F210/00 ,  C08F210/02 ,  C08F210/16 ,  B01J31/00

    CPC分类号： C08F10/00

    摘要： A process for the production of polyethylenes or EPRs comprising contacting a mixture comprising ethylene, one or more alpha-olefins, and, optionally, a diene, under polymerization conditions, with a catalyst system comprising:(A) a catalyst precursor comprising:(i) a vanadium compound, which is the reaction product of(a) VX.sub.3 wherein each X is independently chlorine, bromine, or iodine; and(b) an electron donor, which is a liquid, organic Lewis base in which VX.sub.3 is soluble;(ii) a modifier having the formula BX.sub.3 or AlR.sub.(3-a) X.sub.a wherein each R is independently alkyl having 1 to 14 carbon atoms; each X is as defined above; and a is 0, 1, or 2; and(iii) a support for said vanadium compound and modifier,said catalyst precursor being in an independent or prepolymerized state,(B) a cocatalyst consisting of a compound having the formula AlR.sub.(3-a) X.sub.a wherein R and X are as defined above and a is 1 or 2; and(C) a promoter consisting of a saturated or an unsaturated aliphatic halocarbon having at least 3 carbon atoms and at least 6 halogen atoms, or a haloalkyl substituted aromatic hydrocarbon wherein the haloalkyl substituent has at least 3 halogen atoms.

    摘要翻译： 一种制备聚乙烯或EPR的方法，包括在聚合条件下将包含乙烯，一种或多种α-烯烃和任选的二烯的混合物与包含以下的催化剂体系接触：（A）催化剂前体，其包含：（i ）钒化合物，其为（a）VX 3的反应产物，其中每个X独立地为氯，溴或碘; 和（b）电子给体，其是VX3可溶于其中的液体有机路易斯碱; （ii）具有式BX3或AlR（3-a）Xa的改性剂，其中每个R独立地为具有1至14个碳原子的烷基; 每个X如上所定义; 和a是0,1或2; 所述催化剂前体处于独立或预聚状态，（B）由具有式AlR（3-a）Xa的化合物组成的助催化剂，其中R和X如上所定义; a和a是1或2; 和（C）由具有至少3个碳原子和至少6个卤素原子的饱和或不饱和脂族卤代烃组成的促进剂或卤代烷基取代的芳族烃，其中卤代烷基取代基具有至少3个卤素原子。

    Simplified polyethylene catalyst system
    46.
    发明授权
    Simplified polyethylene catalyst system 失效
    简化聚乙烯催化剂体系

    公开(公告)号：US5070057A

    公开(公告)日：1991-12-03

    申请号：US502678

    申请日：1990-04-02

    申请人： Kevin J. Cann ,  Frederick J. Karol ,  Arthur E. Marcinkowsky

    发明人： Kevin J. Cann ,  Frederick J. Karol ,  Arthur E. Marcinkowsky

    IPC分类号： C08F4/60 ,  C08F4/68 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： An improved support vanadium catalyst, especially an improved Beran et al. catalyst system and ethylene polymerization process in which the improvement derives from fixing the promoter to a component of the catalyst composition such that it is a molecularly structural component of the catalyst and thus is not separately fed to the polymerization reaction, but instead is part of the catalyst composition fed to the reaction.

    摘要翻译： 改进的载体钒催化剂，特别是改进的Beran等 催化剂体系和乙烯聚合方法，其中改进来自于将催化剂固定到催化剂组合物的组分，使得其是催化剂的分子结构组分，因此不分别进料到聚合反应中，而是部分 催化剂组合物进料到反应中。

    Process for activation of titanium and vanadium catalysts useful in ethylene polymerization
    49.
    发明授权
    Process for activation of titanium and vanadium catalysts useful in ethylene polymerization 失效
    活化用于乙烯聚合的钛和钒催化剂的方法

    公开(公告)号：US4755495A

    公开(公告)日：1988-07-05

    申请号：US941363

    申请日：1986-12-15

    申请人： Kevin J. Cann ,  David L. Miles ,  Frederick J. Karol

    发明人： Kevin J. Cann ,  David L. Miles ,  Frederick J. Karol

    IPC分类号： C08F10/00 ,  C08F4/64

    CPC分类号： C08F10/00

    摘要： A process for activating a titanium or vanadium compound and producing polyethylene comprising (i) dissolving a divalent magnesium halide and a Lewis acid having the formula R.sub.m A1X.sub.n or R.sub.m BX.sub.n wherein R is an alkyl or aromatic radical, each radical having 1 to 12 carbon atoms and each R being alike or different; X is a halogen atom; m is an integer from 0 to 3; n is an integer from 0 to 3; and m+n equals 3, in an excess of electron donor compound selected from the group consisting of alkyl esters of alkyl and aromatic carboxylic acids and alkyl and cycloalkyl ethers, each compound having 2 to 12 carbon atoms, in such a manner that a magnesium halide/Lewis acid/electron donor complex is formed; (ii) separating the complex from excess electron donor compound; and (iii) introducing (a) the complex, the titanium or vanadium compound, and a hydrocarbyl aluminum compound and (b) ethylene into a reactor in such a manner that the titanium or vanadium compound is activated and polyethylene is produced.

    摘要翻译： 一种用于活化钛或钒化合物并生产聚乙烯的方法，包括（i）溶解二价卤化镁和具有式RmA1Xn或RmBXn的路易斯酸，其中R是烷基或芳基，每个基团具有1至12个碳原子， R相同或不同; X是卤原子; m是0至3的整数; n为0〜3的整数。 并且m + n等于3，过量的选自烷基和芳族羧酸的烷基酯和烷基和环烷基醚的电子给体化合物，每个化合物具有2至12个碳原子，以使镁 形成卤化物/路易斯酸/电子给体络合物; （ii）将复合物与过量的电子给体化合物分离; 和（iii）将复合物，钛或钒化合物和烃基铝化合物和（b）乙烯以使得钛或钒化合物活化并且生产聚乙烯的方式引入反应器中。