Method for the coloring of ceramic surfaces

摘要

PCT No. PCT/EP96/05312 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed Nov. 30, 1996 PCT Pub. No. WO97/21646 PCT Pub. Date Jun. 19, 1997The present invention relates to a method for coloring ceramic surfaces, wherein the surfaces are treated with an aqueous solution of alkali metal or ammonium dithiosulphatoaurate(I) with a gold concentration of 0.1-10% by weight, the water is evaporated and the dithiosulphatoaurate(I) is decomposed at temperatures of 300-1400 DEG C.