GLAZE Russian patent published in 2013 - IPC C03C6/04 

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and glaze compositions for applying on ceramic tiles and bricks. The glaze contains the following, pts.wt: yellow lead 29-31; ground glass 10-12; ground malachite 6-8; quartz sand 10-12; cryolite 0.25-0.5; ground pegmatite 6-8. The glaze has frost resistance of not less than 100 cycles. The glaze is molten at temperature of 1430-1490°C and fired at 1120-1150°C.

EFFECT: high frost resistance of the glaze.

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