RARE EARTH COMPLEXES [Ln(EDBP)2(DME)Na(DME)3] AS CATALYSTS FOR THE POLYMERIZATION OF 2,2-DIMETHYLTRIMETHYLENE CARBONATE |
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| Authors: | Dong Xiang Jian-fang Yu Wei-Lin Sun |
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| Affiliation: | Key Laboratory of Macromolecule Synthesis and Functionalization,Ministry of Education Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | 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 elimination was prepared |
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| Keywords: | Biphenol Ring-opening polymerization 2,2-Dimethyltrimethylene carbonate |
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