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    • 3. 发明授权
    • Process for producing low polymer of α-olefin
    • 生产α-烯烃低聚物的方法
    • US07169961B2
    • 2007-01-30
    • US10487728
    • 2002-08-21
    • Ryoichi KobayashiShigeki Kura
    • Ryoichi KobayashiShigeki Kura
    • C07C2/06
    • C08F2/00C08F10/00C08F10/02C08F110/02Y10S585/901C08F2/06C08F2500/02
    • A process for producing an α-olefin oligomer by oligomerization of an α-olefin in a presence of a Ziegler-based catalyst, the process comprising introducing at least a portion of a reaction product which is taken out of a reactor and has a temperature of 115° C. or higher into an external heat exchanger, cooling the introduced reaction product, maintaining an oligomerization solution taken out of the external heat exchanger at a temperature of 110° C. or higher and returning at least a portion of the oligomerization solution to the reactor. In the production of an α-olefin oligomer, precipitation and adhesion of polymers at the inside of manufacturing apparatuses such as the external heat exchanger and troubles caused thereby can be prevented and a stable continuous operation can be continued for a long time.
    • 一种在齐格勒基催化剂存在下通过α-烯烃低聚生产α-烯烃低聚物的方法,该方法包括将至少一部分从反应器中取出的反应产物引入并具有 115℃以上进入外部热交换器,冷却引入的反应产物,将从外部热交换器取出的低聚溶液在110℃以上的温度下保持,并将至少一部分低聚溶液返回到 反应堆。 在α-烯烃低聚物的制备中,可以防止诸如外部热交换器的制造装置内部的聚合物的沉淀和粘附以及由此引起的故障,并且可以长时间持续稳定的连续操作。
    • 4. 发明授权
    • Process for producing low polymer of ethylene
    • 生产乙烯低聚物的方法
    • US06576721B2
    • 2003-06-10
    • US10182703
    • 2002-08-07
    • Ryoichi KobayashiShigeki Kura
    • Ryoichi KobayashiShigeki Kura
    • C08F206
    • C07C2/30C07C2531/12Y02P20/584
    • There is disclosed a process for producing an ethylenic oligomer which comprises subjecting ethylene to oligomerization reaction in an organic solvent in the presence of a Ziegler based catalyst, and recyclingly using for the oligomerization reaction, the organic solvent separated by distilling the resultant oligomerization reaction product, wherein the water concentration in the oligomerization reaction system is at most 8 ppm by weight, or the concentration of olefins which have at least 3 carbon atoms and which are contained in the organic solvent to be recycled in the oligomerization reaction system is at most 2% by weight. The process of the present invention can maintain the catalytic activity of the catalyst at a high level.
    • 公开了一种乙烯类低聚物的制造方法,该方法包括在齐格勒型催化剂存在下,使乙烯在有机溶剂中进行低聚反应,再循环使用低聚反应,通过蒸馏生成的低聚反应产物而分离的有机溶剂, 其中低聚反应体系中的水浓度为至多8重量ppm,或者在低聚反应体系中待循环的有机溶剂中含有至少3个碳原子的烯烃的浓度为至多2重量% 重量。 本发明的方法可以将催化剂的催化活性保持在较高的水平。