Polymerization of Methyl Methacrylate by Diisopropylamido bis(methylcyclopentadienyl) ytterbium Complex

查看全文 作　　者：Mao, [1]LS;Xue, [1]MQ;Shen, [1]Q 机构地区：[1]SUZHOU UNIV,DEPT CHEM,SUZHOU 215006,PEOPLES R CHINA 出　　处：《Chinese Chemical Letters》索引1997年第8卷第7期,共2页 摘　　要：It was first found that diisopropylamido bis(methycylclopentadienyl) ytterbium complex (MeCp)2YbN(i-Pr)2(THF) exhibits extremely high catalytic activity in the polymerization of methyl methacrylate. The reactions can be carried out over a quite broad range of polymerization temperatures from -78℃ to 40℃ The results of GPC (gel permeaion chromaography) indicate that the molecular weight distribution (Mw/Mn) becomes broad with the increase of temperature. 关 键 词：THF Polymerization of Methyl Methacrylate by Diisopropylamido bis methylcyclopentadienyl ytterbium Complex