| 摘要 |
PROBLEM TO BE SOLVED: To obtain a cured product, which is excellent in adhesion to a substrate and has a high refractive index, by comprising a specific type hydrolytic condensate of a metal compound, a (meth)acryloyl group-containing reactive monomer, and a photoinitiator. SOLUTION: Five to 3 hundred pts.wt. preferably 10 to 150 pts.wt. of a reactive monomer containing a (meth)acryloyl group and 1 to 30 pts.wt. preferably 0.5 to 20 pts.wt. of a photopolymerization initiator per 100 pts.wt. of the reactive monomer are compounded in 100 pts.wt. of a hydrolytic condensate of a metal compound of the formula: (R)nM(X)z-n, thereby obtaining a radiation curable resin composition. This resin composition is coated on a transparent substrate in a thickness of 0.05 to 0.50 μm and cured by irradiation of a radiation to obtain a cured film having a refractive index as high as 1.60 or over. In the formula, R represents a 1-12C non-hydrolyzable monovalent organic group, M is a metal atom selected from Ti, Ge, Zr, Sb, Al, Zn and the like, Z represents a valence of M, X represents a hydrolyzable group, and (n) is 0 to 3. |
