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.

A black enamel composition includes a glass frit, a black pigment and an organic vehicle, wherein the glass frit includes 50 to 70 wt % of Bi.sub.2O.sub.3, 7.0 to 10.0 wt % of SiO.sub.2, 6.0 to 8.0 wt % of B.sub.2O.sub.3, 10.0 to 15.0 wt % of ZnO, 1.0 to 2.0 wt % of Al.sub.2O.sub.3, 3.2 to 10.9 wt % of the total of Co.sub.3O.sub.4, NiO.sub.2 and Fe.sub.2O.sub.3, based on the total weight of the glass frit, wherein the black pigment is 3 to 10 wt % relative to the total weight of the glass frit.

Coated glass panes having a glass pane and a coating in at least one region of at least one side of the glass pane. The glass pane is composed of glass with SiO.sub.2 and B.sub.2O.sub.3. The coating includes first coating applied in at least one region of the at least one side. The first coating has a binder with SiO.sub.2 and a pigment. The glass pane, in the at least one region, has a flexural strength between at least 5 and at most 170 MPa.

The invention relates to the use of lithium silicate glass ceramics and glasses with caesium oxide content, which are suitable in particular for veneering oxide ceramic restorations and metal restorations.

A glass sheet includes a tempered mineral glass substrate bearing, on one of its faces, a low-emissivity transparent coating and, on this coating, an enamel layer containing one or more ceramic pigments, the enamel layer covering only a portion of the low-emissivity layer and leaving another part thereof free. At least 50% by weight, preferably at least 80% by weight, and in particular at least 95% by weight of the ceramic pigments are chosen from ceramic pigments that reflect near-infrared radiation (NIR) having a reflectance at 1000 nm, determined according to the standard ASTM E 903, at least equal to 40% and a lightness L* of less than 30. It also relates to a process for manufacturing such a sheet and to an oven or refrigerator door containing such a sheet.

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.

A coating composition may include a glass frit including Phosphorus Oxide (P.sub.2O.sub.5), Silicon Oxide (SiO.sub.2), Boron Oxide (B.sub.2O.sub.3), a group I-based metal oxide, Barium Oxide (BaO), Sodium Fluoride (NaF), Titanium Oxide (TiO2), Stannous Oxide (SnO), Zinc Oxide (ZnO), and an adhesion enhancement component. The P.sub.2O.sub.5 may be included by about 40 wt % to about 55 wt % based on a total weight of the glass frit. The SiO.sub.2 may be included by about 5 wt % to about 15 wt % based on the total weight of the glass frit. The B.sub.2O.sub.3 may be included by about 5 wt % to about 10 wt % based on the total weight of the glass frit. The group I-based metal oxide may be included by about 3 wt % to about 10 wt % based on the total weight of the glass frit. The ZnO may be included by about 10 wt % to about 25 wt % based on the total weight of the glass frit, and the TiO.sub.2 may be included by about 0.1 wt % to about 5 wt % based on the total weight of the glass frit.

A coating composition may include a glass frit including Phosphorus Oxide (P.sub.2O.sub.5), Silicon Oxide (SiO.sub.2), Boron Oxide (B.sub.2O.sub.3), a group I-based metal oxide, Barium Oxide (BaO), Sodium Fluoride (NaF), Titanium Oxide (TiO2), Stannous Oxide (SnO), Zinc Oxide (ZnO), and an adhesion enhancement component. The P.sub.2O.sub.5 may be included by about 40 wt % to about 55 wt % based on a total weight of the glass frit. The SiO.sub.2 may be included by about 5 wt % to about 15 wt % based on the total weight of the glass frit. The B.sub.2O.sub.3 may be included by about 5 wt % to about 10 wt % based on the total weight of the glass frit. The group I-based metal oxide may be included by about 3 wt % to about 10 wt % based on the total weight of the glass frit. The ZnO may be included by about 10 wt % to about 25 wt % based on the total weight of the glass frit, and the TiO.sub.2 may be included by about 0.1 wt % to about 5 wt % based on the total weight of the glass frit.

The amorphous, or at least partially crystalline, glass-based joining material is suitable for high-temperature applications, particularly in fuel cells and/or sensors. In addition to SiO.sub.2 and B.sub.2O.sub.3 as glass formers, the joining material similarly contains BaO and CaO, whereby the amount of Al.sub.2O.sub.3 is limited. The joining material has a coefficient of linear thermal expansion of at least 7.0.Math.10.sup.6 K.sup.1 in a range of 20 C. to 300 C. The joining material can be used for joining ferritic high-grade steels and/or chromium-containing alloys and/or ceramics, such as stabilized zirconium oxide and/or aluminium oxide.

A glass sheet includes a tempered mineral glass substrate bearing, on one of its faces, a low-emissivity transparent coating and, on this coating, an enamel layer containing one or more ceramic pigments, the enamel layer covering only a portion of the low-emissivity layer and leaving another part thereof free. At least 50% by weight, preferably at least 80% by weight, and in particular at least 95% by weight of the ceramic pigments are chosen from ceramic pigments that reflect near-infrared radiation (NIR) having a reflectance at 1000 nm, determined according to the standard ASTM E 903, at least equal to 40% and a lightness L* of less than 30. It also relates to a process for manufacturing such a sheet and to an oven or refrigerator door containing such a sheet.