DULL CERAMIC OVERGLAZED DYE Russian patent published in 1996 - IPC

FIELD: dyes. SUBSTANCE: dye has, wt.-%: lead oxide (Pb₃₀₄,) 4.6-6.2; silicon oxide (SiO₂) 6.6-10.2; boron oxide (B₂₀₃,) 1.2-2.2; sodium oxide (Na₂₀,) 0.6-1.0; zinc oxide (ZnO) 0.6-1.0; aluminium oxide (AI₂₀₃,) 2.1-3.5; calcium oxide (CaO) 0.2-0.4; titanium oxide (TiO₂,) 6.8-9.6; tin oxide (SnO₂,) 67.3-70.9; magnesium oxide (MgO) 0.1-0.3; phosphorus pentoxide (P₂₀₅,) 0.3-0.5, and vanadium pentoxide (V₂₀₅.) 1.6-2.0. Dye properties: color - mustard, dye has no mirror component in reflected light, shows stable coloristic indices, high saturation and color chromaticity at yellow range of spectrum. Dye is used for overglazed decoration of china, faience and other ceramic articles. EFFECT: enhanced quality of dye. 3 tbl