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Kinetics and mechanism of initial steps of synthesis of polyetherols from melamine and ethylene carbonate

机译:由三聚氰胺和碳酸亚乙酯合成聚醚醇的初始动力学和机理

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摘要

The kinetics of initial steps of formation of polyetherols in the reaction between melamine and ethylene carbonate in dimethylsulfoxide in presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) as catalyst was studied. Based upon kinetic studies performed with various concentrations of melamine and catalyst, the rate law was formulated and a mechanism of the reaction was proposed. The activation parameters DeltaG(#), DeltaH(#), and DeltaS(#) were obtained from the temperature dependence of kinetics. (C) 2004 Wiley Periodicals, Inc.
机译:研究了在1,4-二氮杂双环[2.2.2]辛烷(DABCO)存在下,三聚氰胺与碳酸亚乙酯在二甲亚砜中反应形成聚醚醇的初始步骤的动力学。基于对各种浓度的三聚氰胺和催化剂进行的动力学研究,制定了速率规律并提出了反应机理。激活参数DeltaG(#),DeltaH(#)和DeltaS(#)从动力学的温度依赖性获得。 (C)2004年Wiley Periodicals,Inc.

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