GLAZE Russian patent published in 1999 - IPC

FIELD: ceramic industry, more particularly coating of products for decorative proposes and ceramic tiles. SUBSTANCE: glaze comprises and further comprises FeO,P₂O₅ and F′, ratio of components being as follows, wt %: SiO₂, 43.77-46.61; Al₂O₃, 5.64-11.55; TiO₂, 0.71-3.53; Fe₂O₃, 0.41-1.63; CaO 0.78-10.51; MgO, 0.14-4.45; K₂O, 1.64-2.82; Na₂O, 4.78-8.84; ZnO, 2-14-8.36; ZrO₂, 0.09- 8.06; B₂O₃, 11.80-18.84; FeO, 0.10-0.30; P₂O₅, 0.02-0.15; F′, 0.45-2.15. Characteristics of glaze: is 54,59-67,75•10^-7deg^-1; spreadability is 215-264 mm; whiteness is 75-89%: roasting temperature is 950-1080 C; color is white, yellow and mustard. EFFECT: greater spreadability and water roasting temperature range of glaze. 2 tbl