ACID/EPOXY REACTION CATALYST SCREENING FOR LOW TEMPERATURE (120 °C) POWDER COATINGS

摘要

A review and experimental assessment of commercially viable crosslinking reaction schemes was used to down select the acid/epoxy reaction as the most promising route to low temperature curing (≤120 °C) powder coatings. This paper describes efforts to identify and screen suitable acid/epoxy reaction catalysts including tertiary amines, ammonium compounds, and metal complexes. Thermal analysis techniques were developed to aid evaluation of catalyst efficacy and a statistical design of experiments was carried out to study several commercially available catalysts.