COLORED ENAMEL Russian patent published in 2004 - IPC

FIELD: enamel for ceramic cake, ornamental and household articles, etc.

SUBSTANCE: claimed enamel contains (mass %): SiO₂ 41.0-54.0; Al₂O₃ 5.0-12.0; B₂O₃ 11.0-18.0; Fe₂O₃ 0.5-1.5; CaO 3.0-12.0; MgO 0.1-3.0; Na₂O 0.5-1.4; K₂O 1.0-8.0; ZnO 7.7-18.0; ZrO₂ 3.0-7.9; TiO₂ 0.1-1.0; pigment 0.5-5.0. Said iron-oxide-based pigment contains (mass %): iron oxide <=60; zinc oxide <=10; water 1-3; and balance: iron and zinc phosphates).

EFFECT: enamel without of pitch formation; colored coating of high performance quality.

1 tbl