Polymerization of Methyl Methacrylate with a Novel Carbon Bridged Cyclopentadienyl Chromium Complex

摘要：

A new carbon bridged cyclopentadienyl chromium complex of the type (C5H4)C(CH3)2 CH2(C5H4N)CrCl2 was prepared by treatment of CrCl3.(THF)3 in THF solution with the lithium salt of ligand with cyclopentadienyl and pyndyl group．The chromium complex was characterized by mass spectra and elemental analysis．Activated by Ai(i-Bu)3．the chromium complex displayed a very high activity for methyl methacrylate(MMA)polymerization．Atier 1 8 hours,85．49％MMA was converted to polymethyl methacrylate(PMMA)with a viscosity average molecular (Mv)of 328000 at 60℃at MMA/Al(i—Bu)3/chromium complex of 2000：20：1 in MMA bulk．The high conversion of MMA and high molecular weight of PMMA are the cause of the unique stable active site formed by the new chromium complex and cocatalyst．

关键词： cyclopentadienylchromium methylmethacrylate polymerization PMMA

作者: Cheng Zhengzai Yan Xiaochao Nie Yujing Lei Rui Lin Susu

作者单位: Institute of Chemical Engineering and Technology,Wuhan University of Science and Technology,Wuhan 43 Department of Material Engineering,Hubei Automotive Industries Institute,Shiyan 442002,China Institute of Chemical Engineering and Technology,Wuhan University of Science and Technology,Wuhan 43

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 517-521

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）