Cadmium-free and lead-free thick film conductor composition
AssigneeE. I. Du Pont de Nemours and Company
InventorJacob Hormadaly
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Abstract
The invention is directed to a thick film paste composition comprising electrically conductive particles and finely divided particles of a glass composition comprising by mole % 5-70% Bi.sub.2 O.sub.3, 18-35% SiO.sub.2, 0.1-40% CuO, 0.5-25% ZnO, 0.5-40% CoO, 0.5-40% Fe.sub.2 O.sub.3, and 0.5-40% MnO, which the glass composition is free of lead and cadmium, all dispersed in an organic medium.
Claims7
A composition comprising a glass composition consisting essentially of by mole % 5-70% Bi.sub.2 O.sub.3, 18-35% SiO.sub.2, 0.1-40% CuO, 0.5-25% ZnO, 0.5-40% CoO,0.5-40% Fe.sub.2 O.sub.3, and 0.5-40% MnO, wherein the glass composition is free of lead and cadmium.
A glass composition consisting essentially of by mole % 0.5-2% MgO, 0-20% BaO, 0-6% Al.sub.2 O.sub.3, 0-45% B.sub.2 O.sub.3, 0-5% ZrO.sub.2, 18-35% SiO.sub.2, 5-70% Bi.sub.2 O.sub.3, 0-25 ZnO, 0.2-40% CuO, 0.1-40% CoO, 0.5-40% Fe.sub.2 O.sub.3 and 0-40% MnO, wherein the glass composition is free of lead and cadmium.
Dependencies are inferred from the claim text.