Radiation-curing coating
systems From Degussa
Patent No. U.S. 6,593,393 B2
Degussa has received a patent for a radiation-curing coating composition comprised of at least one silanized silica, and a polymerizable reactive binder containing double bonds. The silanized silica is prepared by a process that entails spraying silica with a silane selected from the group consisting of hexamethyldisilazane, 3-methacryloxypropyltrialkoxysilane, glycidyloxypropyltrialkoxysilane, and mixtures thereof, mixing the silica sprayed with silane to form a mixture, heat-treating the mixture at a temperature of 100 to 400° C over a period of one to six hours to form silanized silica, compacting the silanized silica and grinding the silanized silica.