GLAZE Russian patent published in 1996 - IPC

FIELD: production of fritted glazes for coating ceramic tiles. SUBSTANCE: glaze contains, mas. %: aluminum oxide, basic formula Al₂O₃, 4-7; calcium oxide, basic formula CaO, 4-5; potassium oxide, basic formula K₂O, 1-4; sodium oxide, basic formula Na₂O, 4-7; boron oxide, basic formula, B₂O₃, 5-8; phosphorous oxide, basic formula P₂O₅, 8-10; fluorine basic formula F', 0.3-0.7; iron oxide, basic formula FeO, 4-5.5; the balance, silicon oxide, basic formula SiO₂. Glaze characteristics: melting temperature 1200 C; firing temperature 850-900 C. EFFECT: higher efficiency. 1 tbl