Patent ID: 7001930

Claim:
A non-aqueous, solvent-free formulation, curable by actinic radiation to a clear, heat-resistant solid body, consisting essentially of: about 10 to 40 percent of a nonpolymerizable acrylic resin having substantial inherent acidity; 90 to 45 percent of at least one polymerizable reactive diluent, in which said acrylic resin is substantially completely dissolved, selected from the group of compounds consisting of tetrahydrofuryl (meth)acrylate, N,N-dimethyl acrylamide and carbon and nitrogen-substituted analogs thereof, 2-hydroxyethyl (meth)acrylate, hydroxybutyl (meth)acrylate, hydroxypropyl (meth)acrylate, and alkoxylated counterparts to the aforesaid compounds; an amount of a free-radical photoinitiator sufficient for effecting polymerization of said reactive diluent; zero to about 5 percent of at least one adhesion promoter; zero to about 30 percent of at least one cross-linking agent; zero to about 2 percent of at least one thickener; and zero to about 4 percent of at least one stabilizer, all based upon the weight of said formulation.