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    • 6. 发明授权
    • Process for preparing polyolefins in suspension
    • 悬浮液中制备聚烯烃的方法
    • US08148588B2
    • 2012-04-03
    • US10589048
    • 2005-01-25
    • Joachim BertholdFrank Peter AltKaspar EvertzPeter Kölle
    • Joachim BertholdFrank Peter AltKaspar EvertzPeter Kölle
    • C08F10/00C08L23/08C08L23/14
    • C08F10/00C08F210/16C08F2/34C08F2/14C08F2/001C08F210/06
    • The invention relates to a continuous process for preparing polyolefins having a bimodal or multimodal molar mass distribution in suspension in at least two reactors R1, R2.x, R3.y which are connected in series and in which different reaction conditions are set. In this process, the offgases A1, A2.x, A3.y, A4 and A5 leaving all the reactors connected in series are firstly collected, the collected offgases are then compressed in a compression stage 10, the compressed offgases are subsequently cooled and the cooled material is separated into a gaseous fraction and a liquid fraction. The separated fractions are then recirculated to the polymerization process at different points. The process of the invention allows the total conversion of the polymerization, based on monomer and comonomer used, to be increased to a surprising extent.
    • 本发明涉及一种用于制备在至少两个串联连接并且设定不同反应条件的反应器R1,R2.x,R3.y中的悬浮液中具有双峰或多峰摩尔质量分布的聚烯烃的连续方法。 在该过程中,首先收集离开所有串联的反应器的废气A1,A2.x,A3.y,A4和A5,然后将收集的废气在压缩级10中压缩,然后将压缩的废气冷却, 冷却的材料被分离成气体馏分和液体馏分。 然后将分离的级分在不同的点再循环到聚合过程中。 本发明的方法允许基于使用的单体和共聚单体的聚合的总转化率增加到惊人的程度。