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52 条记录 (耗时 0.022 秒)

    Ethylene/propylene copolymer rubbers
    21.
    发明授权
    Ethylene/propylene copolymer rubbers 失效
    乙烯/丙烯共聚物橡胶

    公开(公告)号：US5342907A

    公开(公告)日：1994-08-30

    申请号：US83616

    申请日：1993-06-28

    申请人： Kevin J. Cann ,  Fathi D. Hussein ,  Kiu H. Lee ,  Daniel P. Zilker, Jr. ,  James W. Nicoletti ,  Xinlai Bai

    发明人： Kevin J. Cann ,  Fathi D. Hussein ,  Kiu H. Lee ,  Daniel P. Zilker, Jr. ,  James W. Nicoletti ,  Xinlai Bai

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

    CPC分类号： C08F210/16 ,  Y10S526/901

    摘要： A process comprising contacting a mixture comprising ethylene, propylene, and, optionally, a diene, in the gas phase, under polymerization conditions, with a catalyst system comprising:(a) a catalyst precursor, in independent or prepolymer form, consisting of vanadium (acetylacetonate).sub.3 ;(b) optionally, a support for said precursor;(c) a cocatalyst consisting essentially of (i) an alkylaluminum halide 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, and (ii) optionally, a trialkylaluminum provided that the molar ratio of alkylaluminum halide to trialkylaluminum is at least about 1.5:1; 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： 一种方法，包括在气相中在聚合条件下将包含乙烯，丙烯和任选的二烯的混合物与催化剂体系接触，所述催化剂体系包含：（a）催化剂前体，其独立或预聚物形式由钒 乙酰丙酮）3; （b）任选地，所述前体的载体; （c）助催化剂，其基本上由（i）具有式AlR（3-a）Xa的烷基铝卤化物组成，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; 并且a为1或2，和（ii）任选的三烷基铝，条件是卤化烷基铝与三烷基铝的摩尔比为至少约1.5:1; 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。

    Process for the production of polyethylene
    22.
    发明授权
    Process for the production of polyethylene 失效
    聚乙烯生产工艺

    公开(公告)号：US5102841A

    公开(公告)日：1992-04-07

    申请号：US625936

    申请日：1990-12-11

    申请人： Kevin J. Cann ,  Robert C. Brady, III ,  Yimsan Gau

    发明人： Kevin J. Cann ,  Robert C. Brady, III ,  Yimsan Gau

    IPC分类号： C08F4/654 ,  C08F10/02

    CPC分类号： C08F10/02 ,  Y10S526/904

    摘要： A process for the production of polyethylene comprising contacting ethylene or a mixture comprising ethylene and one or more alpha-olefins and, optionally, one or more diolefins, under polymerization conditions, with a catalyst system comprising:(a) a particulate catalyst precursor based on titanium or vanadium;(b) polypropylene support particles to which the catalyst precursor particles are bonded; and(c) a hydrocarbyl aluminum cocatalyst.

    摘要翻译： 一种用于生产聚乙烯的方法，其包括在聚合条件下使乙烯或包含乙烯和一种或多种α-烯烃和任选的一种或多种二烯烃的混合物与包含以下的催化剂体系接触：（a）基于 钛或钒; （b）催化剂前体颗粒结合的聚丙烯支撑颗粒; 和（c）烃基铝助催化剂。