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

被引：0

作者：

Cheng Zhengzai ^{[1
,2
]}

Yan Xiaochao ^{[1
,2
]}

Nie Yujing ^{[3
]}

Lei Rui ^{[1
]}

Lin Susu ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, Inst Chem Engn & Technol, Wuhan 430081, Peoples R China

[2] Key Lab Coal Transit & Novel Carbon Mat Hubei, Wuhan 430081, Peoples R China

[3] Hubei Automot Ind Inst, Dep Mat Engn, Shiyan 442002, Peoples R China

来源：

ADVANCES IN KEY ENGINEERING MATERIALS | 2011年 / 214卷

关键词：

cyclopentadienylchromium; methylmethacrylate; polymerization; PMMA; CATALYST;

D O I：

10.4028/www.scientific.net/AMR.214.517

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 center dot(THF)(3) in THF solution with the lithium salt of ligand with cyclopentadienyl and pyridyl group. The chromium complex was characterized by mass spectra and elemental analysis. Activated by Al(i-Bu)(3), the chromium complex displayed a very high activity for methyl methacrylate (MMA) polymerization. After 18 hours, 85.49 % MMA was converted to polymethyl methacrylate (PMMA) with a viscosity average molecular (Mv) of 328000 at 60 degrees C 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.

引用

页码：517 / +

页数：2

共 8 条

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