Monomers such as monofunctionalmonomers including acrylates, methacrylates, and ethylacrylates; difunctional monomers including various diacrylates and dimethacrylates, especially tripropylene glycol diacrylate, bisphenol A diacrylates and ethoxylated bisphenol A dimethacrylates;trifunctional monomers including various triacrylates and trimethacrylates, especially trimethylolpropane ethoxy triacry