Green decoration coloring substance for high-temperature firing,

Details Green decoration coloring substance for high-temperature firing, Green decoration coloring substance for high-temperature firing,

1998-10-02

2000-06-20

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 21, 501 32, C03L 800

Patent

active

060777974

ABSTRACT:
The invention makes available for the first time pure green decoration coloring substances for high-temperature firing at least at 1000.degree. C., in particular at 1100 to 1250.degree. C., with a color hue angle h in the range of 160.degree..+-.20.degree.. The decoration coloring substance comprises chromium oxide as the pigment and one or several glass frits as glass flux, and additionally a cobalt compound from the series CoO, Co(OH).sub.2 and Co compounds forming CoO below or at the firing temperature, with the atomic ratio of Co to Cr being in the range of 0.01 to 0.35, preferably 0.15 to 0.25.

REFERENCES:
patent: 3928050 (1975-12-01), Jasinski
patent: 4193808 (1980-03-01), Khodsky et al.
patent: 4481261 (1984-11-01), Johnson et al.
patent: 4717690 (1988-01-01), Hankey et al.

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