03.14.13
US 8,367,045 B2; Mycone Dental Supply Co., Cherry Hill, NJ, has patented a method of preparing colored ultraviolet (UV)-curable compositions useful for adornment of natural and artificial nails and artificial nail extensions. It entails dispersing a pigment in an organic liquid to form a pigment concentrate. The organic liquid is comprised of one or more organic chemicals selected from solvents, ethylenically unsaturated monomers, and ethylenically unsaturated oligomers. The dispersed pigment concentrate is mixed with a radiation-curable nail gel composition consisting essentially of one or more ethylenically unsaturated monomers, one or more ethylenically unsaturated oligomers, or mixtures thereof, a photoinitiator and, optionally, one or more photo accelerators, fillers, inhibitors, plasticizers, non-reactive polymers and adhesion promoters. The resultant mixture is adapted to be curable in the presence of UV radiation.