Patent ID: 7569619

Claim:
A radiation-curable resin composition, comprising: (i) an inorganic component comprising silica particles obtained by hydrolyzing a mixture consisting of an oligomer of an alkoxysilane and a solvent, and (ii) a monomer having a radiation-curable functional group, an oligomer having a radiation-curable functional group, or both said monomer and said oligomer, wherein the solvent is present in an amount of 5% by weight or less based on the total weight of the radiation-curable resin composition, wherein the viscosity of the radiation curable composition at 25° C. is from 1,000 to 10,000 centipoises, and wherein the silica particle has a number average particle size of 50 nm or less, and wherein a cured product of the composition has a light transmittance of 80% or more at an optical path length of 0.1 mm at 550 nm.