The Polymerization of Methyl Methacrylate in the Presence of a New Homogeneous Yttrium Catalyst |
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Authors: | LIU Jian-fei SUN Jun-quan SHEN Zhi-quan |
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Institution: | Department of Polymer Science and Engineering, Zhe Jiang University, Hangzhou, 310027 |
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Abstract: | Methyl methacrylate(MMA) polymerized in the presence of a new homogeneous catalyst of Y(acac)3-(i-Bu)3Al-BuLi. The effects of MMA/Y, Al/Y, Li/Ymolar ratios, polymerization temperature and time are reported. The results show that a small amount of butyl lithium could greatly enhance the activity of the catalyst and the polymerization reaction could be carried out at low temperatures (-25℃-10℃) with a high conversion. 200 kg of poly(methyl methacrylate) (PMMA) with 63% syndiotacticity could be prepared by using 1 mole of yttrium. |
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Keywords: | Yttrium Butyl lithium Methyl methacrylate Polymerization |
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