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Evaluation of alkane sulfonic acid catalysts and derivatives for curing activity in a melamine/acrylic polyol coating formulation using fourier transform infrared spectroscopy

Abstract

FTIR measurements may be able to replace more laborious physical property determinations and thus serve as an efficient screening methodology in catalysis driven processes. This possibility was considered in evaluating alkane sulfonic acids catalyst performance to promote the cure of a melamine resin with acrylic polyols. The example chosen here is an evaluation of alkane sulfonic acid derivatives to measure catalytic efficiency of the cure reaction between hexamethoxymethylmelamine (HMMM) and an acrylicpolyol. The IR measurements provided information on the extent of reaction, via monitoring the disappearance of the OH stretching mode at 3472 cm−1 associated with the acrylic polyol. This method may also be used to provide detailed information on reaction kinetics and insight into the cure mechanism. As the reaction proceeds, the coating’s properties change and IR measurements can serve as a probe for these changes.

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Garcia, D., Sandler, S.R., Brennan, J. et al. Evaluation of alkane sulfonic acid catalysts and derivatives for curing activity in a melamine/acrylic polyol coating formulation using fourier transform infrared spectroscopy. Journal of Coatings Technology 72, 89–93 (2000). https://doi.org/10.1007/BF02698002

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  • DOI: https://doi.org/10.1007/BF02698002

Keywords

  • Polyol
  • Melamine
  • Methyl Ethyl Ketone
  • PTSA
  • Methyl Ethyl Ketone