A particle mixture for forming an enamel comprising particles of a first glass frit and particles of a second glass frit; wherein the first glass frit comprises greater than 5 wt % silicon oxide (SiO.sub.2) and less than 5 wt % boron oxide (B.sub.2O.sub.3); wherein the second glass frit comprises boron oxide (B.sub.2O.sub.3) and less than 5 wt % of silicon oxide (SiO.sub.2); and wherein both the particles of the first glass frit and the particles of the second glass frit have a D90 particle size of less than 5 microns. Also described is an ink comprising the particle mixture, methods of preparing the ink, an article formed using the ink, and a kit comprising particles of the first and second glass frit.

An enamel paste composition includes glass frit; a pigment; and an organic carrier medium; wherein the glass frit includes at least two glass frits including a first glass frit and a second glass frit, and wherein the first glass frit has a larger particle size and a higher glass transition temperature than the second glass frit. Also described is a method of forming an enamel coating by depositing the enamel paste composition on a substrate; and firing the enamel paste to form an enamel coating on the substrate, the enamel coating having a heterogeneous frit microstructure with particles of the first frit embedded in a matrix of second frit.

Modified copper chromite spinel pigments exhibit lower coefficients of thermal expansion than unmodified structures. Three methods exist to modify the pigments: (1) the incorporation of secondary modifiers into the pigment core composition, (2) control of the pigment firing profile, including both the temperature and the soak time, and (3) control of the pigment core composition.

Disclosed is a type of borosilicate glass, the composition of which, based on oxides, contains the following components by weight percentage (wt %): 2.0 wt %-5.0 wt % of TiO.sub.2, 0.25 wt %-2.5 wt % of CeO.sub.2 and 0.25 wt %-3.0 wt % of Y.sub.2O.sub.3, and does not contain any iron compound, such as ferric oxide. The glass has better UV resistance and alkaline resistance properties, and a better light transmission rate, and is particularly suitable for use in the field of pharmaceutical packaging materials.

The present invention relates to an enamel composition capable of implementing cleaning without swelling using moisture, to a manufacturing method therefor, and to cooking utensils. The enamel composition according to the present invention comprises: 20-60 wt % of P.sub.2O.sub.5; 1-20 wt % of SiO.sub.2; 1-30 wt % of B.sub.2O.sub.3; 10-30 wt % of at least one of Li.sub.2O, Na.sub.2O, and K.sub.2O; 10-40 wt % of at least one selected from the group consisting of post-transition metal oxides and transition metal oxides. Therefore, the present invention provides an enamel composition capable of implementing cleaning without swelling using moisture, a manufacturing method therefor, and cooking utensils.

A glass material for enamel is provided that can be used to produce an enamel product in which a luster pigment does not dissolve in glass and can thus maintain its luster properties to provide a metallic texture and high surface gloss. The glass material for enamel in accordance with the present invention contains a frit that has a composition thereof including 40 wt % to 60 wt % of silicon dioxide, 15 wt % to 35 wt % of boron oxide, and 18 wt % or less of one or more alkali metal oxides selected from the group consisting of lithium oxide, sodium oxide and potassium oxide, and a luster pigment for providing a metallic look.

The present disclosure relates to an enamel composition, a method for preparation thereof, and a cooking appliance using the same, which provide excellent cleaning performance, reduce a defect caused by carbon gases when an enamel coating is implemented on a base material made of cast iron, and provides excellent thermal shock resistance and durability. In the enamel composition according to the disclosure, components implementing glass and components having catalytic performance have an optimal component system, thereby ensuring excellent thermal shock resistance and durability. The enamel composition of the present disclosure has a component system that helps enamel cast iron as well as low carbon steel, thereby ensuring excellent cleaning performance, thermal shock resistance and durability. The enamel composition of the present disclosure is appropriate for a cooktop grate, a hob burner, and the like which directly contact a fire and are exposed to repetitive thermal shock.

A glass composition formed of glass frit including P.sub.2O.sub.5, TiO.sub.2 and group I-based oxide, wherein P.sub.2O.sub.5 is contained in an amount of 20 wt % to 30 wt % based on a total weight of the glass frit, wherein TiO.sub.2 is contained in an amount of 10 wt % to 20 wt % based on the total weight of the glass frit, and wherein the group I-based oxide is contained in an amount of 15 wt % to 30 wt % based on the total weight of the glass frit.

The subject of the invention is a material comprising a glass sheet coated on at least one portion of one of the faces thereof with a stack of thin layers comprising at least one layer based on a nitride, said stack being coated on at least one portion of its surface with an enamel layer comprising bismuth, said stack further comprising, in contact with the enamel layer, a layer, referred to as a contact layer, which is based on an oxide.

Certain example embodiments relate to seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a composition may be combined with a binder solution that substantially or completely burns out by the time the composition is melted. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that included the above-described composition.