Patent ID: 7528084
Filing Date: 2009-05-05
Classification: C03C

Abstract:
1. A lead-free, cadmium-free glass frit acceptable for use in automotive applications, consisting essentially of in percent by weight from about 8% to about 45% SiO 2 , up to about 7% ZnO, up to about 4% B 2 O 3 , from about 40% to about 80% Bi 2 O 3 , up to about 4% Na 2 O, up to about 8% K 2 O, up to about 4% Li 2 O, from about 0.1% to about 22% Ta 2 O 5 , up to about 1% Nb 2 O 5 , up to 4% of each of Al 2 O 3 , TiO 2 , ZrO 2 and BaO, up to about 1% of each of SrO, Sb 2 O 3 , Mo 2 O 3 MgO, P 2 O 5 and CaO, up to about 3% F 2 , and up to about 4% of one or more of La 2 O 3 , Nd 2 O z , Pr 2 O 3 and Ce 2 O 3 .