Patent ID: 8202812

Claim:
A method of decorating a substrate comprising: a. applying to the substrate a coating of an enamel composition comprising, prior to firing, an organic vehicle and a solids portion, wherein the solids portion comprises i. a frit portion wherein the frit portion comprises, prior to firing: 1. 38-60 wt % SiO 2 , 2. 5.1-22.9 wt % B 2 O 3 , 3. 8.1-18 wt % TiO 2 , 4. 0.1-14.9 wt % ZnO, 5. 0.1-4.5 wt % Li 2 O 6. 0.1-18 wt % K 2 O, and 7. 1-7 wt % F, and ii. 0.1-15 wt % of a crystalline material selected from the group consisting of zinc borates, zinc silicates, zinc titanates, aluminum silicates, and combinations thereof, and b. firing the substrate and coating at a temperature sufficient to flow the enamel composition to cause the enamel composition to adhere to the substrate, wherein, after firing, the enamel composition is opaque and exhibits performance of chemical durability against wet through deterioration of at least 24 hours when tested in 0.1 N H 2 SO 4 at 80° C., and wherein the substrate is selected from the group consisting of glass, automotive glass, architectural glass and tableware.