RARE EARTH COMPLEXES[Ln(EDBP)_2(DME)Na(DME)_3]AS CATALYSTS FOR THE POLYMERIZATION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE  

作　　者：孙维林 

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

出　　处：《Chinese Journal of Polymer Science》2011年第3期296-299,共4页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation(No.20674071);the Special Funds for Major State Basic Research Projects(No.2005CB623802)

摘　　要：The biphenol based discrete ion-pair rare earth complexes, [Ln（EDBP）2（DME）Na（DME）3] [Ln = Er（1）, Yb（2）, Sm（3）], were prepared and used as catalysts for the ring-opening polymerization （ROP） of 2,2-dimethyltrimethylene carbonate （DTC）. Three complexes show moderate activities for the polymerization, and the catalytic activities increase in the following sequence： （Yb 〈 Er 〈 Sm）. The effect of different ratios of [DTC]/[Ln], polymerization temperature and time on the polymerization was investigated. Moreover, PDTC without ether unit developed from possible CO2 elimination was prepared.The biphenol based discrete ion-pair rare earth complexes, [Ln（EDBP）2（DME）Na（DME）3] [Ln = Er（1）, Yb（2）, Sm（3）], were prepared and used as catalysts for the ring-opening polymerization （ROP） of 2,2-dimethyltrimethylene carbonate （DTC）. Three complexes show moderate activities for the polymerization, and the catalytic activities increase in the following sequence： （Yb 〈 Er 〈 Sm）. The effect of different ratios of [DTC]/[Ln], polymerization temperature and time on the polymerization was investigated. Moreover, PDTC without ether unit developed from possible CO2 elimination was prepared.

关 键 词：BIPHENOL Ring-opening polymerization 2 2-Dimethyltrimethylene carbonate. 

分 类 号：O631.3[理学—高分子化学]