TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Coating Precursor: Coating precursor further contains a mono-functional monomer for reducing viscosity, multi-functional monomer for increasing cross-link density, an adhesion promoter or an air-release agent. The mono-functional monomer is isobornyl acrylate monomer. The adhesion promoter is a methacrylate polyol. The multi-functional monomer is propoxylated glycerol triacrylate monomer. The photoinitiator is a blend of 1-phenyl-2-hydroxy-2-methyl-1-propanone and benzophenone. The air-release agent is polydimethyl siloxane. The precursor comprises about 25-65 weight% (wt.%) of acrylated aliphatic urethane oligomer, about 5-20 wt.% of acrylated epoxy oligomer, about 20-40 wt.% of mono-functional monomer for reducing viscosity of the coating precursor, about 1-5 wt.% of multi-functional monomer for increasing cross-link density, about 1-15 wt.% of adhesion promoter, and about 0.1-10 wt.% of photoinitiator. EXAMPLE - A formulation containing acrylated aliphatic urethane oligomer RXO 1336 (in weight parts) (37.2), isobornyl acrylate monomer (49.6), propoxylated glycerol triacrylate OTA 480 (5), 1-phenyl-2-hydroxy-2-methyl-1-propanone DUROCUR 1173 (4.7), benzophenone (2.4) and polydimethyl siloxane SAG 47 (1.2), was prepared by introducing the urethane oligomers and polydimethyl siloxane air-release agent into a vessel. The mixture was stirred with heating to lower the viscosity of the mixture. The methacrylated polyol adhesion promoter was then added to the mixture. Once the adhesion promoter was fully dispersed, the non-urethane oligomers, and the mono-functional monomers (isobornyl acrylate and octydecyl acrylate monomer) were added. In a separate vessel, benzophenone was dissolved in 1-phenyl-2-hydroxy-2-methyl-1-propanone and in multi-functional monomers with heating. The resulting blend of photoinitiators and multi-functional monomers were then admixed with the other coating precursor components. Test samples were prepared on various substrates by screen printing or casting. Depending on the test, the nominal coating thickness was 0.001 inches or 0.005-0.006 inches. Each of the example formulations was cured by successive exposure to 375 watts/inch UV lamps having fusion type D bulbs (375 nm) and type H+ bulbs (220 nm), respectively, at line speeds of 15-25 feet per minute. Tensile strength, elongation, shore A hardness, adhesion scratch dry and temperature resistance (mandrel flex) of the test sample were evaluated and found to be 1050 PSI, 169%, 85, 5 and 10, respectively.