Lead-, cadmium- and barium-free frits for ceramic glazes

摘要

A frit composition for ceramic glazes is disclosed which is free of lead, cadmium and also barium. The composition contains SiO2, B2O3, Al2O3, alkali metal oxide, CaO, ZnO, and optionally MgO, SrO, TiO2, Bi2O3, P2O5 or ZrO2.