FEATURE - POWDER COATINGS - ACRYLIC POWDER COATINGS

Flexibility in the functional design of acrylic powder coatings has en abled a wide range of different crosslinking chemistries to be develop ed, based upon carboxyl, hydroxyl and glycidyl functional binders. The use of dynamic viscosity/time (temperature) cure curves is seen as a powerful technique to quantify formulation acid resin design parameter s. This paper describes how the technique con be used to highlight dif ferences in the available crosslinking chemistries, and begins to show how these con be used to predict coating performance on a more quanti tative level.