Patent ID: 6984483

Claim:
A composition comprising a photoinitiator and a silicic acid polycondensate, wherein the silicic acid polycondensate is produced by a process comprising condensing one or more organically modified silanediols of the general formula I Ar 2 Si(OH) 2 (I) with one or more organically modified silanes of the general formula II RSi(OR′) 3 (II), wherein said condensing is performed without adding water the molar ratio of, wherein said silanediols of the general formula I to said silanes of the general formula II is 1:1, wherein up to 90 mole percent of said silane of the general formula II is optionally replaced by one or more co-condensable compounds selected from the group consisting of boron compounds, aluminum compounds, silicon compounds, germanium compounds, titanium compounds and zirconium compounds, and wherein Ar is a radical comprising 6 to 20 carbon atoms and one or more aromatic groups, R is an organic radical comprising 2 to 15 carbon atoms and one or more epoxy groups and/or one or more C═C double bonds, R′ is methyl or ethyl, wherein said photoinitiator is present in said composition in a quantity effective for photochemical curing via UV.