POSS-NEODYMIUM COMPLEX{[(i-C_4H_9)_7(Si_7O_(12))Nd]_4NaCl}AS PRECURSOR FOR POLYMERIZATION OF ISOPRENE  

作　　者：孙维林 

机构地区：[1]Key Laboratory of Macromolecule Synthesis and Functionalization,Ministry of Education [2]Department of Polymer Science and Engineering,Zhejiang University

出　　处：《Chinese Journal of Polymer Science》2009年第4期597-600,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 MajorState Basic Research Projects(No.2005CB623802).

摘　　要：The tetrameric neodymium-silsesquioxane cage complex,{[(i-C_4H_9)_7(Si_7O_(12))Nd])4NaCl},was prepared and used as precursor for the polymerization of isoprene.When activated by AlEt_3 in the presence of TMSCl,this POSS-Nd complex (POSS=polyhedral oligomeric silsesquioxane) shows a moderate activity for the polymerization,and the effects of different ratios of Al/Nd,Cl/Nd and time on the polymerization were investigated.Moreover,The POSS-Nd complex may serve as models for the silica-supported rare earth cat...The tetrameric neodymium-silsesquioxane cage complex,{[(i-C_4H_9)_7(Si_7O_(12))Nd])4NaCl},was prepared and used as precursor for the polymerization of isoprene.When activated by AlEt_3 in the presence of TMSCl,this POSS-Nd complex (POSS=polyhedral oligomeric silsesquioxane) shows a moderate activity for the polymerization,and the effects of different ratios of Al/Nd,Cl/Nd and time on the polymerization were investigated.Moreover,The POSS-Nd complex may serve as models for the silica-supported rare earth cat...

关 键 词：Incompletely condensed silsesquioxanes Metal silsesquioxanes POLYISOPRENE 

分 类 号：O631.3[理学—高分子化学]