ENGOBE Russian patent published in 2013 - IPC C04B33/14 

FIELD: chemistry.

SUBSTANCE: invention relates to engobe compositions which can be used in making household ceramic articles (dishes, casks, jars, racks etc). The engobe contains white-burning clay, ground scrap sheet window glass, a colouring additive, pegmatite and calcium phosphate, with the following ratio of components, wt %: clay - 70.0-80.0; ground scrap sheet window glass - 3.0-4.0; colouring additive - 0.5-9.0; pegmatite - 11.0-13.0; calcium phosphate - 3.0-4.0.

EFFECT: high heat resistance of the engobe.

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