Patent ID: 8685595

Claim:
A polyurethane composition comprising A) a polyisocyanate component comprising an NCO-terminated polyurethane prepolymer, wherein the NCO groups of said NCO-terminated polyurethane prepolymer are primarily aliphatically bonded and wherein said NCO-terminated polyurethane prepolymer is based on hydroxy-functional compounds having an OH functionality of from 1.6 to 2.05; B) an isocyanate-reactive polyetherpolyol; C) a urethane acrylate and/or urethane methacrylate comprising at least one aromatic structural unit and a refractive index of greater than 1.50 at 405 nm, wherein said urethane acrylate and/or urethane methacrylate is free of NCO groups and OH groups; D) a free radical stabilizer; E) a photoinitiator based on a combination of a borate salt and a dye having an absorption band which at least partly covers the spectral range of from 400 to 800 nm; F) optionally a catalyst; and G) optionally an auxiliary and/or an additive.