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    • 2. 发明申请
    • POLYMERISATION PROCESS
    • 聚合过程
    • WO2005070976A1
    • 2005-08-04
    • PCT/GB2005/000157
    • 2005-01-14
    • BP CHEMICALS LIMITEDJACOBSEN, Grant, BerentLALANNE-MAGNE, Claudine, VivianeSERE PEYRIGAIN, Pierre
    • JACOBSEN, Grant, BerentLALANNE-MAGNE, Claudine, VivianeSERE PEYRIGAIN, Pierre
    • C08F210/16
    • C08F210/16C08F10/00C08F2420/02C08F4/6592C08F210/14C08F2/34
    • A process for the copolymerisation of ethylene and an α-olefin having 7 to 10 carbon atoms in a fluidised bed gas phase reactor in the presence of a single site polymerisation catalyst comprises operating the process in condensed mode and wherein the amount of said α-olefin is maintained below that at which substantial condensation in the reactor occurs. The preferred α-olefin is 1-octene and the preferred single site polymerisation catalyst is a metallocene complex. By use of the process conditions of the present invention, higher α -olefins may be successfully employed in a gas phase process provided the amount of higher α -olefin comonomer is maintained below that at which substantial condensation occurs: Such operation is also dependent upon the operation temperature and the boiling point of the higher α-olefin and the process is particularly advantageous when performed in the presence of catalysts able to incorporate high levels of comonomers at low comonomer inventories.
    • 在单位聚合催化剂存在下,在流化床气相反应器中共聚乙烯和具有7至10个碳原子的α-烯烃的方法包括以缩合模式操作该方法,其中所述α-烯烃的量 保持低于反应器发生大量冷凝的温度。 优选的α-烯烃是1-辛烯,优选的单中心聚合催化剂是金属茂络合物。 通过使用本发明的方法条件,如果高级α-烯烃共聚单体的量保持在低于发生实质性冷凝的量时,可以在气相方法中成功地使用较高级的α-烯烃:这种操作也取决于 当在低共聚单体清单下能够并入高含量的共聚单体的催化剂存在下进行时,操作温度和较高级α-烯烃的沸点是特别有利的。