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    • 8. 发明申请
    • PROCESS FOR TRANSITIONING BETWEEN INCOMPATIBLE CATALYSTS
    • 不相容催化剂之间的过渡过程
    • WO2017108347A1
    • 2017-06-29
    • PCT/EP2016/079099
    • 2016-11-29
    • SABIC GLOBAL TECHNOLOGIES B.V.
    • BANAT, YahyaHUMYDI-AL, AbdulazizFELLAHI, Said
    • C08F2/00C08F2/01C08F2/34C08F4/6592
    • C08F2/34C08F2/001C08F2/01C08F4/6592C08F2410/05
    • The invention relates to a process for transitioning from a first continuous polymerization in a gas phase reactor conducted in the presence of a metallocene catalyst to a second polymerization conducted in the presence of a Ziegler-Natta catalyst in the gas phase reactor wherein the metallocene catalyst and the Ziegler-Natta catalysts are incompatible, the process comprising: (a) discontinuing the introduction of the metallocene catalyst into the gas phase reactor; (b) introducing an effective amount of cyclohexylamine into the reactor to at least partially deactivate the metallocene catalyst; (c) introducing an organometallic compound into the reactor and reacting the organometallic compound with cyclohexylamine; (d) degas the gas composition of the reactor and build up a new composition inside the reactor for the second polymerization with the Ziegler-Natta catalyst (e) introducing the Ziegler-Natta catalyst into the reactor.
    • 本发明涉及一种从在茂金属催化剂存在下进行的气相反应器中的第一次连续聚合转变为在Ziegler-Natta催化剂存在下进行的第二次聚合的方法, 气相反应器,其中茂金属催化剂和齐格勒 - 纳塔催化剂不相容,所述方法包括:(a)中止将茂金属催化剂引入气相反应器; (b)将有效量的环己胺引入反应器中以至少部分钝化茂金属催化剂; (c)将有机金属化合物引入反应器中并使有机金属化合物与环己胺反应; (d)使反应器的气体组合物脱气并在反应器内用Ziegler-Natta催化剂在第二次聚合反应中形成新组合物(e)将齐格勒 - 纳塔催化剂引入反应器中。