The Polymerization of Methyl Methacrylate in the Presence of a New Homogeneous Yttrium Catalyst

Abstract

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.

Key words: Yttrium, Butyl lithium, Methyl methacrylate, Polymerization

LIU Jian-fei, SUN Jun-quan, SHEN Zhi-quan . The Polymerization of Methyl Methacrylate in the Presence of a New Homogeneous Yttrium Catalyst[J]. Chemical Research in Chinese Universities, 1993, 9(2): 148-151.

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The Polymerization of Methyl Methacrylate in the Presence of a New Homogeneous Yttrium Catalyst

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