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

✍ Scribed by Dorota Kijowska; Stanisław Wołowiec; Jacek Lubczak

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
114 KB
Volume
93
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

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 ΔG^#,^ ΔH^#^, and ΔS^#^ were obtained from the temperature dependence of kinetics. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 294–300, 2004

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