| 稀土催化体系Nd(napb)_3-AlEt_2Cl-Al(i-Bu)_3对双烯烃聚合的活性 |
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| 引用本文： | 阮埃乃,李柏林,王利祥.稀土催化体系Nd(napb)_3-AlEt_2Cl-Al(i-Bu)_3对双烯烃聚合的活性[J].高分子学报,1987,0(1):17-23. |
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| 作者姓名： | 阮埃乃 李柏林 王利祥 |
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| 作者单位： | 中国科学院长春应用化学研究所 长春
(阮埃乃，李柏林)，中国科学院长春应用化学研究所 长春(王利祥) |
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| 摘 要： | 分析了催化剂Nd(naph)_3-AlEt_2Cl-Al(i-Bu)_3三组分反应产物的组成,用动力学方法研究了其催化异戊二烯聚合的活性。催化剂各组分的配比及制备方法对其活性及利用率有显著影响。催化剂的利用率随它使用时浓度的减小而增大,最后达到恒定链终止反应由体系中过量的AlEt_2Cl吸附于活性体而发生。
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| 关 键 词： | 催化活性 环烷酸钕 双烯烃 |
| 收稿时间： | 1984-09-06 |
THE ACTIVITY OF RARE EARTH CATALYST SYSTEM Na(naph)3-AlEt2Cl-Al(i-Bu)3 IN DIENE POLYMERIZATION |
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| RUAN Ain-ai,LI Bai-lin,WANG Li-xiang.THE ACTIVITY OF RARE EARTH CATALYST SYSTEM Na(naph)3-AlEt2Cl-Al(i-Bu)3 IN DIENE POLYMERIZATION[J].Acta Polymerica Sinica,1987,0(1):17-23. |
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| Authors: | RUAN Ain-ai LI Bai-lin WANG Li-xiang |
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| Institution: | Changchun Institute of Applied Chemistry; Academic Sinica; Changchun |
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| Abstract: | The chemical composition of reaction products of a rare earth catalyst, Na(naph)3, AlEt3Cl and Al (i-Bu)3, has been analyzed, and its activity in polymerization of isoprene was studied using kinetic method. The results revealed that the recipe of catalyst components and the method of preparation effected the activity markedly. Besides, the utilization coefficient of the catalyst increased with decrease in catalyst concentration and attained constant value. It was found that the active sites was occupied by excess AlEt3Cl present in the system and thus led to the chain termination reaction. |
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| Keywords: | Catalytic activity Neodymium napthenate Diene Polymerization Kinetics |
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