CERAMIC PIGMENT Russian patent published in 1994 - IPC

FIELD: decoration of porcelain ware. SUBSTANCE: the pigment comprises (wt % ): 52.0-55.0 silicon oxide; 10.5-11.8 aluminium oxide; 3.2-3.8 calcium oxide; 1.4-2.2 potassium oxide; 1.8-2.4 sodium oxide; 11.0-15.7 manganese oxide; 4.5-5.0 potassium bromide; and 8.0-9.0 ferrous sulfide. The pigment characteristics: the hue 515-520 nm and the color purity 60-65% . EFFECT: improved properties of the ceramic pigment. 1 tbl