| 摘要 |
The invention provides a new lead-free glass composition, a glass frit of this composition, a process for its production and also coloring preparations containing such a glass frit and the use thereof. The glass composition according to the invention contains in mol-% - K2O 10-17 - B2O3 10-25 - TiO2 15-30 - SiO2 35-55 - Al2O3 0-5 - Bi2O3 0-5 - S 0-3 - and any oxide from the group consisting of PbO, CdO, ZnO, Li2O, Na2O, MgO, CaO, SrO, BaO and P2O3 which is present being present in a quantity of less than 0.5 wt-% in each case. Glass frits of this composition are very suitable for use in coloring preparations for the production of glass enamels, in particular for panes of glass for automobiles. Glass frits according to the invention can be stoved at low temperatures, exhibit good anti-sticking properties, a high resistance to acids and a diminished migration of silver.
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