GLAZE Russian patent published in 1999 - IPC

FIELD: ceramic industry, more particularly coating of products used for decorative and domestic purposes. SUBSTANCE: glaze comprises SiO₂,Al₂O₃,Fe₂O₃,TiO₂, CaO, MgO, Na₂O,K₂O,B₂O₃,P₂O₅,V₂O₅ и SO₃, FeO, MnO, ZnO or CuO, ratio of components being as follows, wt %: SiO₂, 40.73-47.80; Al₂O₃, 9.46-13.14; Fe₂O₃ 3.52-5.06; TiO₂, 2.38-2.70; CaO, 2.88-3.74; MgO, 0.94- 1.31; Na₂O, 5.16-6.59; K₂O, 2.31-3.15; B₂O₃, 13.62-21.06; P₂O₅, 0.16-0.45; V₂O₅, 0.01-0.03; FeO, 0.70-0.93; MnO, 0.18-0.23; ZnO or CuO, 3.71-8.33. Characteristics of glaze: is 57,5-66,6•10^-7; luster is 90-90.8%, water resistance is 99.94-99.97%, spreadability is 188-280 mm, color varies from light brown to green with metallic luster. EFFECT: improved and luster of glaze. 2 tbl