Patent ID: 6566289
Filing Date: 2003-05-20
Classification: C03C

Abstract:
A composition for use in forming a white porcelain enamel coating on aluminized or galvanized steel, said composition comprising a solids portion comprising a glass component and a white pigment, said glass component comprising one or more glass frits comprising by weight from about 30.6% to 45.9% P2O5, from about 19.1% to about 28.7% Al2O3, from about 13.9% to about 20.8% Na2O, from about 4.1% to about 6.1% B2O3, from about 3.4% to about 5.1% K2O, from about 2.3% to about 3.4% ZnO, from about 1.8% to about 2.7% SiO2, from about 1.0% to about 1.5% Li2O, and from about 4.5% to about 6.8% F, and said white pigment comprising TiO2.