Optimization of Vacuum-Applied UV-Curable Coatings Performance
Using Formulation and Instrumental Parameters
UCB Chemicals Corp. has introduced low-viscosity epoxy, urethane and polyester acrylate resins that can be used at relatively high concentrations in vacuum-applied coatings.2-3 Starting point formulations for clearcoats based on the different types of oligomers will be presented in this article. Selection of the resin, or a blend of two or more products, allows formulators to control the coating reactivity, flexibility and impact resistance. Table 1 summarizes the properties of the oligomers we manufacture that have been used to prepare vacuum-applied clearcoats.