Polymerization of isoprene catalyzed by neodymium heterocyclic Schiff base complex  

作　　者：Lei Zhang Xu Feng Ni Wei Lin Sun Zhi Quan Shen 

机构地区：[1]Institute of Polymer Science, Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027, China

出　　处：《Chinese Chemical Letters》2008年第6期734-738,共5页中国化学快报（英文版）

基　　金：The authors are indebted to the financial supports of the National Natural Science Foundation of China （No.20774078 and the Key Program No.20434020）；the Special Funds for Major Basic Research Projects （G2005CB623802）.

摘　　要：Neodymium-based heterocyclic Schiff base complex was prepared and applied for the coordination polymerization of isoprene. This complex polymerized isoprene to afford products featuring high cis-1,4 stereospecificity （ca. 95%） and high molecular weight （ca, 10^5） in the presence of the triisobutyl aluminium （AliBu3） as cocatalyst, The microstructure of obtained polyisoprene was investigated by FTIR, 1^H NMR. Two different kinds of active centers in the catalyst system were examined by GPC method.Neodymium-based heterocyclic Schiff base complex was prepared and applied for the coordination polymerization of isoprene. This complex polymerized isoprene to afford products featuring high cis-1,4 stereospecificity （ca. 95%） and high molecular weight （ca, 10^5） in the presence of the triisobutyl aluminium （AliBu3） as cocatalyst, The microstructure of obtained polyisoprene was investigated by FTIR, 1^H NMR. Two different kinds of active centers in the catalyst system were examined by GPC method.

关 键 词：Heterocyclic Schiff base Neodymium complex ISOPRENE Coordination polymerization 

分 类 号：O6[理学—化学]