Patent ID: 8431673

Claim:
A composition comprising at least one compound (A) obtained from the reaction of at least one compound (i) having a refractive index n D 20 of at least 1.50, optionally, 2-phenoxyethanol, at least one polyisocyanate (ii), and, optionally, at least one compound (iii) comprising at least one isocyanate-reactable functional group —YH and at least one curable functional group Q, wherein each of Y is, independently, O, NR or S, wherein compound (i) is selected from the group consisting of 3-(methylthio)-1-propanol, 4-(methylthio) benzyl alcohol and 2-phenylthioethanol; wherein the curable functional group Q is a carbon-carbon double bond containing curable functional group; and wherein compound (A) is obtained by reacting from 0.5 to 1.2 equivalents of compound (i) and, optionally, 2-phenoxyethanol, per equivalent of polyisocyanate (ii) and, optionally, from 0 to 0.6 equivalents of compound (iii).