Abstract: An enamel paste composition includes: glass frit; a pigment; an organic carrier medium; and an oxygen source material to facilitate clean removal of the organic carrier medium components during firing, wherein the oxygen source material includes a combination of: (i) a first oxygen source material which releases oxygen at a temperature of less than 350° C.; and (ii) a second oxygen source material which releases oxygen at a temperature of greater than 350° C. The first oxygen source material can be magnesium peroxide and the second oxygen source material can be barium peroxide. The enamel paste composition is utilized to form enamel coated products without requiring a pre-firing step.

Abstract: 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.

Abstract: 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 (SiO2), 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.

Abstract: 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 (SiO2), 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.