Citation: Lei Zhang, Xu Feng Ni, Wei Lin Sun, Zhi Quan Shen. Polymerization of isoprene catalyzed by neodymium heterocyclic Schiff base complex[J]. Chinese Chemical Letters, ;2008, 19(6): 734-738. doi: 10.1016/j.cclet.2008.03.007 shu

Polymerization of isoprene catalyzed by neodymium heterocyclic Schiff base complex

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

Received Date: 17 December 2007

Fund Project: the Special Funds for Major Basic Research Projects (G 2005CB623802).The authors are indebted to the financial supports of the National Natural Science Foundation of China (No. 20774078 and the Key Program No. 20434020)

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. 10⁵) in the presence of the triisobutyl aluminium (AliBu₃) as cocatalyst. The microstructure of obtained polyisoprene was investigated by FTIR,¹H NMR. Two different kinds of active centers in the catalyst system were examined by GPC method.
- Heterocyclic Schiff base,
- Neodymium complex,
- Isoprene,
- Coordination polymerization
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