Melamine acrylates: An interesting class of oligomers

Acrylated melamines, a class of radiation curable oligomers, which were considered reactive diluents or impregnating resins, are investigated with regard to their synthesis. It is attempted to attribute the properties and the radiation curing behaviour to the specific synthetic procedure and to the data of the reaction products. Both the molecular mass and the double bond content indicate the formation of more-ring systems. Hexa(methoxymethyl)-melamine and hydroxyalkyl acrylates of a defined quality together with an accurate control of the preparation provide oligomers of a relatively high reactivity resulting in rather hard coatings or impregnations when cured by irradiation. (Author)