A process for the manufacture of a glass-ceramic article exhibiting properties of resistance to scratches, greasy marks, adhesion of dirt and light scattering. The glass-ceramic article includes a surface, the surface arithmetic roughness of which is between 2 μm and 7 μm and the roughness being obtained using a chemical surface treatment. The glass-ceramic article is particularly suitable for use as a cooking surface and/or as surface for the preparation of foodstuffs.

Embodiments of methods for forming strengthened glass articles comprise providing an exchangeable glass substrate having a coefficient of thermal expansion (CTE) between about 60×10−7°/C. to about 110×10−7°/C., depositing at least one decorative porous inorganic layer onto at least a portion of the surface of the glass substrate, wherein the decorative porous inorganic layer comprises a glass transition temperature (Tg)≥450° C., a glass softening temperature (Ts)≥650° C., wherein the difference in CTE values between the glass substrate and the decorative porous inorganic layer is within 10×10−7°/C.; and curing the glass substrate and the deposited decorative porous inorganic layer at a temperature greater than the Ts of the decorative porous inorganic layer; and chemically strengthening the cured glass substrate and the decorative porous inorganic layer thereon via ion exchange at a temperature below the Tg of the decorative porous inorganic layer.

Embodiments of methods for forming strengthened glass articles comprise providing an exchangeable glass substrate having a coefficient of thermal expansion (CTE) between about 60×10−7°/C. to about 110×10−7°/C., depositing at least one decorative porous inorganic layer onto at least a portion of the surface of the glass substrate, wherein the decorative porous inorganic layer comprises a glass transition temperature (Tg)≥450° C., a glass softening temperature (Ts)≥650° C., wherein the difference in CTE values between the glass substrate and the decorative porous inorganic layer is within 10×10−7°/C.; and curing the glass substrate and the deposited decorative porous inorganic layer at a temperature greater than the Ts of the decorative porous inorganic layer; and chemically strengthening the cured glass substrate and the decorative porous inorganic layer thereon via ion exchange at a temperature below the Tg of the decorative porous inorganic layer.

A method of modifying glass frit involves treating the frit with a grain-boundary-healing compound. The method increases transmission and clarity, and reduces haze of a fired enamel coating made from such modified glass frit as compared to a coating not made from such modified glass frit. The grain-boundary-healing compound influences the chemistry at the grain boundaries to prevent haze. The compound burns out to yield a fluxing material that dissolves alkaline carbonates or bicarbonates on the surface of the glass frit. The dissolved species are incorporated into the enamel coating, thereby promoting the fusion of the glass frit and reducing the amount of haze in the enamel coating. The additives also function to prevent the formation of seed crystals on the surface of the glass frit that may inhibit the fusion of the glass frit.

A method of modifying glass frit involves treating the frit with a grain-boundary-healing compound. The method increases transmission and clarity, and reduces haze of a fired enamel coating made from such modified glass frit as compared to a coating not made from such modified glass frit. The grain-boundary-healing compound influences the chemistry at the grain boundaries to prevent haze. The compound burns out to yield a fluxing material that dissolves alkaline carbonates or bicarbonates on the surface of the glass frit. The dissolved species are incorporated into the enamel coating, thereby promoting the fusion of the glass frit and reducing the amount of haze in the enamel coating. The additives also function to prevent the formation of seed crystals on the surface of the glass frit that may inhibit the fusion of the glass frit.

The present invention relates to a particle mixture comprising particles of glass frit and particles of a crystalline oxide material, wherein the glass frit comprises silicon oxide (SiO.sub.2), zinc oxide (ZnO) and sulfur (S) and wherein the D90 particle size of the particle mixture is less than 5 microns. The particle mixture may be used to apply an enamel to a substrate. The present invention further relates to the use of the particle mixture to form an enamel on a substrate, to a glass sheet and to an automotive window pane.

The present invention relates to a particle mixture comprising particles of glass frit and particles of a crystalline oxide material, wherein the glass frit comprises silicon oxide (SiO.sub.2), zinc oxide (ZnO) and sulfur (S) and wherein the D90 particle size of the particle mixture is less than 5 microns. The particle mixture may be used to apply an enamel to a substrate. The present invention further relates to the use of the particle mixture to form an enamel on a substrate, to a glass sheet and to an automotive window pane.

To suppress deterioration in a wiping property of wipers and increase in a load on the wipers. In glass for vehicles (1) including a light blocking region, a far-infrared ray transmission region is formed in the light blocking region, the far-infrared ray transmission region being provided with an opening (19) and a far-infrared ray transmission member (20) disposed in the opening (19), and the glass for vehicles (1) and the far-infrared ray transmission member (20) are bonded to each other with a frame member (30) interposed therebetween. Regarding the frame member (30), where a length of the longest straight line among straight lines each connecting optional two points on an inner circumference on a side facing the opening (19) in a surface on a vehicle exterior side is D, and a thickness of a portion projecting from a surface on the vehicle exterior side of the glass for vehicles (1) is t, D.sup.2/t is larger than 1250, and t is equal to or smaller than 2.5 mm.

A coated glass substrate and a method of making the glass substrate is disclosed. The method comprises the following: providing a coating formulation on a glass substrate wherein the coating formulation comprises at least one polymerizable compound, a glass frit, and a non-crosslinked polymer and heating the coating formulation on the glass substrate. The coated glass substrate includes a coating provided on a surface of a glass substrate wherein the coating comprises a semi-interpenetrating polymer network including a non-crosslinked polymer and a glass frit. The coating exhibits a stud pull of about 275 psi or more.

A coated glass substrate and a method of making the glass substrate is disclosed. The method comprises the following: providing a coating formulation on a glass substrate wherein the coating formulation comprises at least one polymerizable compound, a glass frit, and a non-crosslinked polymer and heating the coating formulation on the glass substrate. The coated glass substrate includes a coating provided on a surface of a glass substrate wherein the coating comprises a semi-interpenetrating polymer network including a non-crosslinked polymer and a glass frit. The coating exhibits a stud pull of about 275 psi or more.