Patent ID: 6271157
Filing Date: 2001-08-07
Classification: C04B

Abstract:
A composition for colouring ceramic articles obtained from a standard ceramic mixture not modified through TiO.sub.2 addition, wherein the articles are coloured from yellow to orange at the surface and to a penetration depth of at least 1 mm, said composition consisting of a mixture of (a) inorganic or organic compounds of titanium and chromium, (b) inorganic or organic compounds of antimony or tungsten or mixture thereof, and (c) a water solution or a water/hydro-soluble organic solvent mixture, wherein the solution contains the components expressed as elements in weight percent, in the following ranges: elemental titanium in an amount of 2-6% and elemental chromium in an amount of 0.2-2.5% and further contains either elemental antimony in an amount of 3-12% or elemental tungsten in an amount of 4-14% or mixtures thereof.