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Keywords:

  • melamine;
  • ethylene carbonate;
  • kinetics;
  • mechanism;
  • oligomers;
  • ring opening polymerization

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