Patent ID: 8680179

Claim:
A composite composition comprising a) 10 to 79% by weight of at least one cationically polymerizable organic resin, which is solid at room temperature, b) 0.5 to 10% by weight of a cationic photoinitiator, c) 5 to 79% by weight of inorganic nanoparticles, and d) 10 to 79% by weight of a hydrolysate and/or condensate of hydrolysable silane compounds comprising: 1) a hydrolysable silane compound having at least one aryl group, 2) a hydrolysable silane compound having at least one cationically polymerizable group, and 3) a hydrolysable alkylsilane represented by the general formula (I) R a SiX (4-a) (I) wherein R, which may be the same or different, is an alkyl substituent, X is a hydrolysable substituent, and a is an integer from 1 to 3.