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The polymerization of methyl methacrylate with a new Tin-bridged yttrocene/Al(I-Bu)3

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Abstract

A new catalyst composed of Tin-bridged yttrocene Ph2Sn(MeCp)2YCI (MeCp=methylcyclopentadienyl) and Al (i-Bu)3 was successfully developed for the polymerization of methyl methacrylate (MMA). Detailed study of factors (such as the molar ratio of Al/Cat., catalyst concentration, various solvents, temperature and time) influencing polymerization reaction indicated that the catalytic active species may be still somewhat stable at high temperature and still have a long catalytic lifetime.1H NMR spectrum showed about 65% syndiotactic content in the polymethyl methacrylate (PMMA) prepared. From kinetic studies, the polymerization rate equation may be expressed as Rp=Kp[Cat.]2.4. The overall activation energy of polymerization is 20.9±3.1 kJ/mol.

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Authors and Affiliations

  1. Dept. of Chemical Engineering, Yuquan Campus of Zhejiang University, 310027, Hangzhou, China

    Hu Wei-qui, Sun Jun-quan, Pan Zhi-da & Wu Zhao-li

  2. National Laboratory of Element-Organic Chemistry, Nankai University, 300071, Tianjin, China

    Xu Yu-ming

Authors
  1. Hu Wei-qui
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  2. Sun Jun-quan
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  3. Pan Zhi-da
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  4. Wu Zhao-li
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  5. Xu Yu-ming
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Additional information

Project(29774021) supported by the Natural Science Foundation of China and National Laboratory of Element-Organic Chemistry, Nakai, University.

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Wei-qui, H., Jun-quan, S., Zhi-da, P. et al. The polymerization of methyl methacrylate with a new Tin-bridged yttrocene/Al(I-Bu)3. J. Zhejiang Univ. Sci. A 1, 157–161 (2000). https://doi.org/10.1631/BF02839233

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  • DOI: https://doi.org/10.1631/BF02839233

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