MASS FOR OBTAINING ENAMEL COATING Russian patent published in 2009 - IPC C03C8/14 

FIELD: chemistry.

SUBSTANCE: mass for obtaining enamel coating, containing frit and clay, is notable for containing additionally electrothermophosphoric granulated slag, with following component ratio, wt %: frit - 90.0-91.5; clay - 2.5-3.5; electrothermophosphoric granulated slag - 6.1-6.5. Slag contains 90-95% of glass phase and is characterised b the following composition, wt %: SiO₂ - 40.0-43.0; Al₂O₃ - 1.0-3.0; Fe₂O₃ - 0.4-1.0; CaO - 42.0-49.0; MgO - 3.0-4.0; SO₃ - 2.0-3.0; P₂O₅ - 0.9-3.0.

EFFECT: increase of enamel coating heat resistance.

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