Patent ID: 8110127

Claim:
A thermally curable photochromic coating composition comprising: a mixture having two different monomers, where the monomers are selected from the group consisting of: (a) monofunctional (meth)acrylate; (b) difunctional (meth)acrylate; (c) a combination of a monofunctional (meth)acrylate and a difunctional (meth)acrylate; (d) multifunctional (meth)acrylate; and (e) aliphatic urethane diacrylate; a metal salt selected from the group consisting of a metal ester of 2-naphthoic acid, a metal ester of 2-ethylhexanoic acid, a metal ester of octoate material, and combinations thereof; a Hindered Amine Light Stabilizer (HALS); an antioxidant; an initiator selected from the group consisting of t-amylperoxy-2-ethylhexyl carbonate organic peroxide and t-butylperoxy-2-ethylhexylcarbonate; and a photochromic dye.