Color paste for manufacturing internally printed laminated glass panes
AssigneeCerdec Aktiengesellshcaft Keramische Farben
InventorAdalbert Huber
Life of this patent
Estimating the term…
Abstract
The invention relates to an improved color paste for the manufacture of internally printed, curved laminated glass panes. Prior art color pastes cause problems with respect to adhesion and optical accuracy or require a higher technical complexity during the baking process for producing internally printed laminated glass panes. Color pastes which constitute the invention and overcome the previous drawbacks are characterized by a print medium which contains 5,6,8-trihydroxy-1,4-naphthoquinone in addition to solvents.
Claims10
In a color paste for use in the manufacture of internally printed, curved laminated glass panes, comprising a flux;
- as colorant an inorganic component selected from the group consisting of a pigment, a color frit and mixtures thereof, which are stable to baking;
- and an organic solvent-containing print medium, the improvement wherein the print medium contains 5,6,8-trihydroxy-1,4-naphthoquinone in an amount of 5 to 70% by weight.
In a print medium for use in preparing a color paste, said print medium comprising an organic solvent, the improvement wherein the print medium contains 5,6,8-trihydroxy-1,4-naphthoquinone in an amount of 5 to 70% by weight.
Dependencies are inferred from the claim text.