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    • 56. 发明公开
    • Polymeric product produced with a catalyst comprising an ion pair
    • Mit eeem Ionenpaar enthaltenden Katalysator hergestelltes Polymerprodukt
    • EP0949274A2
    • 1999-10-13
    • EP99660058.1
    • 1999-04-01
    • BOREALIS POLYMERS OY
    • Lindroos, JarmoJohansson, SolveigWaldvogel, Päivi
    • C08F4/658C08F10/02C08L23/04C08K3/04
    • C08F10/00C08F10/02C08F110/02C08L23/04C08L2205/02C08L2314/02C08F4/025C08F4/6555C08L2666/04C08F2500/12C08F2500/17
    • A catalyst having high activity independent of the hydrogen concentration and low gel productivity in the polymerization of ethylene has been prepared. The preparation comprises the steps of reacting:

      a support comprising a magnesium halide compound having the formula (1):

              RO 2-n MgX n      (1)

      wherein R is a C 1 -C 20 alkyl, a C 7 -C 26 aralkyl, a C 1 -C 20 alkoxy or a C 7 -C 26 aralkoxy, each same or different X is a halogen, and n is an integer 1 or 2,
      an alkyl metal halide compound having the formula (2):

              R 1   n 1 M m 1 X 1   (3m 1 -n 1 )      (2)


      wherein M is B or Al, each same or different R 1 is a C 1 -C 10 alkyl, each same or different X 1 is a halogen, m 1 is 1 or 2, n 1 is 1 or 2 when m   1 is 1 and n 1 is an integer from 1 to 5 when m 1 is 2,
      a magnesium composition containing magnesium bonded to a hydrocarbyl and magnesium bonded to a hydrocarbyl oxide, said magnesium composition having the empirical formula (3):

              R 2   n 2 (R 3 O) 2-n 2 Mg     (3)

      wherein each same or different R 2 is a C 1 -C 20 alkyl, each same or different R 3 is a C 1 -C 20 alkyl, n 2 is between 0.01 and 1.99, and
      a titanium halide compound having the formula (4):

              (R 4 O) n 3 TiX 2   4-n 3      (4)

      wherein each same or different R 4 is a C 1 -C 20 alkyl, each same or different X 2 is a halogen, n 3 is 0 or an integer 1-3, and Ti is quadrivalent titanium.
    • 已经制备了具有独立于乙烯聚合中的氢浓度和低凝胶生产率的高活性的催化剂。 该制备方法包括以下步骤:使包含具有式(1)的卤化镁化合物的载体反应:ƒ€ƒ€ƒ€ƒ€ƒ€ƒƒƒƒƒƒƒƒ€ƒ€ƒ €(1)其中R是C 1 -C 20烷基,C 7 -C 26芳烷基,C 1 -C 20烷氧基或C 7 -C 26芳烷氧基,各自相同或不同,X是卤素 ,n为整数1或2,具有式(2)的烷基金属卤化物化合物:ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 1€Šn 1 M m 1 X 1€ Š(3m 1 -n 1)€ƒ€ƒ€ƒ€ƒ(2)其中M为B或Al,各自相同或不同,R 1为C 1 -C 10烷基,各自相同或不同X 1为 卤素,m 1为1或2,当m 1为1时,n 1为1或2,当m 1为2时,n 1为1至5的整数,镁与镁基结合的烃基和镁 所述镁组合物具有经验式(3):ƒ€ƒ€ƒ€ƒ€ƒ€ƒR 2€Šn 2(R 3 O)2-n 2 Mg€ ƒ ƒ€ƒ€ƒ(3)其中每个相同或不同的R 2是C 1 -C 20烷基,各自相同或不同,R 3为C 1 -C 20烷基,n 2为0.01至1.99,以及 具有式(4)的卤化钛化合物:ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(R 4 O)n 3 TiX 2€Š4-n 3€ƒ€ƒ€ƒ€ (4)其中每个相同或不同的R 4是C 1 -C 20烷基,各自相同或不同,X 2为卤素,n 3为0或整数1-3,Ti为四价钛。
    • 59. 发明公开
    • Process for producing bimodal ethylene polymers in tandem reactors
    • Verfahren zur Herstellung von bimodalen聚乙烯在Serien-Reaktoren
    • EP0778289A1
    • 1997-06-11
    • EP96113388.1
    • 1992-02-24
    • MOBIL OIL CORPORATION
    • Ali, Ahmed HusseinHagerty, Robert OldsOng, Shihmay Christine
    • C08F2/34C08F10/02C08F4/64C08F297/08C08L23/06
    • C08F10/02B01J8/26B01J2219/0004C08F210/16C08F297/083C08L23/06C08L23/0815C08L2205/02C08L2308/00C08L2314/02C08F2/001C08L2666/04C08F210/14C08F2500/12C08F2500/05C08F2500/26C08F2500/01C08F2500/18C08F2500/02C08F4/6555C08F4/6546C08F4/6583
    • A process is provided for producing a bimodal ethylene polymer blend comprising contacting in a first gas phase, fluidized bed reaction zone under polymerization conditions, a gaseous monomeric composition comprising a major proportion of ethylene and, optionally, hydrogen, with a Ziegler-Natta catalyst, the hydrogen/ethylene molar ratio (H 2 /C 2 ratio) being no higher than about 0.3 and the ethylene partial pressure being no higher than about 100 psia, to produce a relatively high molecular weight (HMW) polymer associated with catalyst particles, transferring the HMW polymer associated with catalyst particles to a second gas phase, fluidized bed reaction zone into which is also fed hydrogen and a gaseous monomeric composition comprising a major proportion of ethylene, under polymerization conditions including an H 2 /C 2 ratio of at least about 0.9 and at least about 8.0 times that in the first reaction zone, and an ethylene partial pressure of at least 1.7 times that in said first reaction zone, to produce a low molecular weight (LMW) polymer deposited on and within the voids of the HMW polymer/catalyst particles, the resulting bimodal polymer blend obtained from the second reaction zone having a fraction of HMW polymer of at least about 0.35.
    • 提供了一种用于生产双峰乙烯聚合物共混物的方法,其包括在第一气相,聚合条件下的流化床反应区,包含主要乙烯和任选的氢的齐格勒 - 纳塔催化剂的气态单体组合物, 氢/乙烯摩尔比(H2 / C2比)不高于约0.3,乙烯分压不高于约100psia,以产生与催化剂颗粒相关的相对高分子量(HMW)聚合物,转移HMW 与催化剂颗粒相关的聚合物与第二气相相关的流化床反应区,在其中还供入氢的气态单体组合物和包含主要比例的乙烯的气态单体组合物在包括至少约0.9的H 2 / C 2比和至少约0.9的聚合条件下 约为第一反应区的8.0倍,乙烯分压至少为所述第一反应区的1.7倍 n区,以产生沉积在HMW聚合物/催化剂颗粒的空隙上和之内的低分子量(LMW)聚合物,所得双峰聚合物共混物由第二反应区获得,HMW聚合物的分数为至少约0.35。