Enamel paste compositions and methods of coating and chemical strengthening glass substrates

Abstract

A paste for coating a glass substrate which, after coating, is subjected to firing and chemical strengthening by ion exchange to form an enamel coated, chemically strengthened glass product, the paste containing an organic carrier fluid; a first inorganic frit having a first softening point; and a second inorganic frit having a second softening point, wherein the softening point of the first inorganic frit is higher than the softening point of the second inorganic frit such that the second inorganic frit can be softened and sintered at a temperature lower than the softening point of the first inorganic frit, and wherein the first inorganic frit includes an exchangeable ion content which can be ion exchanged to chemically strengthen the first inorganic frit.

Dependencies are inferred from the claim text.