Industrial & Engineering Chemistry Research, Vol.50, No.3, 1523-1529, 2011
New Acrylated Oligomers with a Sulfide Group for Radiation-Curable Coatings
Dendritic oligomers were prepared using the Michael reaction of thiol with acrylates taken in excess. Liquid oligomers A-D demonstrate exceptional shelf life. When cured, the oligomer produces a coating with relatively high tensile strength and hardness that is akin to high viscosity dendritic urethane acrylates. Oligomers A-C demonstrate a balance of properties in between the developed in our lab earlier dendritic polyester acrylates, BDE-1025 (low viscosity, lower hardness) and the dendritic urethane acrylates D and XDR-1416 (high viscosity, high hardness).