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首页> 外文期刊>Polimery >Studies on ethylene/1-hexene copolymerization over the zirconocene catalyst supported on MAO-modified MgCl_2(THF)_2. The effect of copolymerization conditions on catalyst activity and copolymer properties
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Studies on ethylene/1-hexene copolymerization over the zirconocene catalyst supported on MAO-modified MgCl_2(THF)_2. The effect of copolymerization conditions on catalyst activity and copolymer properties

机译：MAO改性的MgCl_2（THF）_2负载的锆茂催化剂上乙烯/ 1-己烯共聚反应的研究。共聚条件对催化剂活性和共聚物性能的影响

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摘要

The activity of a MgCl_2(THF)_2/MAO/Cp_2ZrCl_2/MAO catalyst was studied in copolymerization of ethylene with 1-hexene in relatoin to Al:Zr mole ratio (1500-7000 at 50 deg C), experimental temperature (20-70 deg C), and time (20-90 min at 50 deg C; 10-55 min at 65 deg C). As the temperature and the Al:Zr ratio were increased, the activity of the catalyst rose. At the same time, the degree of incorporation of 1-hexene into the polymer chain increased and the M, melting point and crystllinity of the copolymer decreased. The catalyst was stable throughout the copolymerization. The process rate and copolymer properties were not affected by copolymerization time.
机译：研究了MgCl_2（THF）_2 / MAO / Cp_2ZrCl_2 / MAO催化剂的活性，涉及乙烯与1-己烯在相对于Al：Zr的摩尔比（50℃下为1500-7000），实验温度（20-70）下的共聚摄氏度）和时间（50摄氏度时20-90分钟; 65摄氏度时10-55分钟）。随着温度和Al∶Zr比的增加，催化剂的活性上升。同时，1-己烯在聚合物链中的结合程度增加，共聚物的M，熔点和结晶度降低。在整个共聚过程中，催化剂是稳定的。加工速度和共聚物性能不受共聚时间的影响。

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