Claims
- 1. A glass substrate having a ceramic enamel coating adherent thereto, said coating being obtained by applying to at least a portion of a glass substrate a ceramic enamel composition comprising 20 to 80% by weight of an oxide frit, 0.5 to 60% by weight of a crystalline bismuth silicate seed material, 10 to 40% by weight of a pigment and 10 to 40% by weight of an organic vehicle and heating the coated glass substrate to an elevated temperature to fuse components of the ceramic enamel composition to the glass substrate.
- 2. A glass substrate according to claim 1 wherein the glass substrate is automotive glass.
- 3. A glass substrate according to claim 2 wherein the enamel composition is applied to the periphery of the glass substrate.
- 4. A glass substrate according to claim 1 wherein, in the ceramic enamel composition, the oxide frit contains at least one member selected from the group consisting of bismuth oxide and zinc oxide.
- 5. A glass substrate according to claim 1 wherein, in the ceramic enamel composition, the crystalline bismuth silicate seed material contains at least one phase selected from the group consisting of Bi.sub.12 SiO.sub.20, Bi.sub.4 (SiO.sub.4).sub.3 and Bi.sub.2 SiO.sub.5.
- 6. A glass substrate according to claim 1 wherein the ceramic enamel composition further contains a material selected from the group consisting of alumina-silicate compounds, calcium silicate compounds, boro-alumina-silicate compounds, soda-calcia-alumina-silicate compounds, feldspar compounds, titania, and mixtures thereof.
- 7. A glass substrate according to claim 1 wherein the ceramic enamel composition further comprises a silver bleed-through resistant material containing iron, silicon or zinc.
Parent Case Info
This application is a division of application Ser. No. 08/569,905, filed Dec. 8, 1995 now U.S. Pat. No. 5,714,420.
US Referenced Citations (22)
Foreign Referenced Citations (4)
Number |
Date |
Country |
201 241 |
Dec 1986 |
EPX |
370 683 |
May 1990 |
EPX |
6-234547 |
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JPX |
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Divisions (1)
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Number |
Date |
Country |
Parent |
569905 |
Dec 1995 |
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