METHOD OF MAKING PORCELAIN WARE DECORATED WITH COBALT Russian patent published in 2000 - IPC

FIELD: manufacture of porcelain products decorated preferably with cobalt. SUBSTANCE: in order to manufacture highly artistic products decorated with cobalt paint having improved properties, what is claimed is optimum mode of third period of gazed firing is 1020-1120 C and 1120-1220 C with carbon monoxide carbon content of 1.78-1.8% and 1.24-1.32% in gas medium; optimum thicknesses, when applying layer of cobalt paint onto porcelain ware, range from 20 to 240 mcm; layer of glaze applied is 80-300 mcm; cobalt oxide content in paint varies from 1.25 to 2.50 mg/sq.cm and dextrin content varies from 8 to 14%. EFFECT: more efficient preparation method. 6 cl, 2 tbl