Preparation and properties of urethane acrylate varnishes obtained by bulk photopolymerization

摘要

The urethane acrylate copolymers were prepd. by bulk photocopolymerization of a selected monofunctional urethane acrylate monomer with monofunctional methacrylate monomers. The varnishes showed high viscosity, transparency and adhesion to glass and also an excellent yellowness index after UV-curing.