| http://www.w3.org/ns/prov#value | - The coating compositions of this invention are prepared by hydrolyzing an alkyltrialkoxysilane or aryltrialkoxysilane of the formula RSi(OR)3, wherein R is alkyl of from 1 to 3 carbons or aryl, such as phenyl, in an aqueous dispersion of colloidal silica, aging them, e.g., for at least about 5 days at a temperature of at least about 18??? C. and then admixing a ??-hydroxyketone compound with the r
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