Alkali - lead - and cadmium-free glass frit and their use for the production of ceramic colors

摘要

The present invention relates to an alkali -, lead - and cadmium-free glass frit with a thermal expansion α in the temperature range from 20 to 300°C. of less than 6,5 · 10^-6 K^-1 and a glass transition temperature t_g of less than 550°C, which has a special glass composition or thereof. The glass frits are particularly suitable for the preparation of low baking ceramic colors, which rises, in particular for the decoration low utilized, such as glasses, and / or glass ceramics, can also be employed.