Living polymerization of 1,3-butadiene by a Ziegler–Natta type catalyst composed of iron(III) 2-ethylhexanoate, triisobutylaluminum and diethyl phosphite

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• 作者：Dirong Gong ; Weimin Dong ; Jinchang Hu ; Xuequan Zhang ; Liansheng Jiang
• 关键词：Iron-based catalyst ; Diethyl phosphite ; 1 ; 3-Butadiene
• 刊名：Polymer
• 出版年：2009
• 出版时间：19 June 2009
• 年：2009
• 卷：50
• 期：13
• 页码：2826-2829
• 全文大小：314 K

文摘

Living characteristics of facilely prepared Ziegler–Natta type catalyst system consisting of iron(III) 2-ethylhexanoate, triisobutylaluminum and diethyl phosphite have been found in the polymerization of 1,3-butadiene in hexane at 40 °C. The characteristics have been well demonstrated by: a first-order kinetics with respect to monomer conversion, a narrow molecular weight distribution (M_w/M_n = 1.48–1.52) of polybutadiene in the entire range of polymerization conversion and a good linearity between M_n and the yield of polymer. Feasible post-polymerization of 1,3-butadiene and block co-polymerization of 1,3-butadiene and isoprene further support the living natures of the catalyst bestowed with. The current catalyst system is highly active (yield > 80 % , 35 min), providing polybutadiene with 1,2, cis-1,4 and trans-1,4 units about 44.0 % , 51.0 % and 5.0 % , respectively.