Black glass frit, process for the production thereof and use the

Details Black glass frit, process for the production thereof and use the Black glass frit, process for the production thereof and use the

1997-02-12

1998-01-20

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 17, 501 23, 501 65, 501 68, 501 77, 296 841, C03C 802

Patent

active

057100810

ABSTRACT:
Using conventional glass frits for the production of black glass coating compositions makes it necessary also to use a relatively large quantity of black pigments. The quantity of pigment used may be reduced by using black glass frits according to the invention, thin layers of which already have a low transmission.
The glass frit according to the invention is black and contains in the glass composition (in mol. %): 10-17% of K.sub.2 O, 10-25% of B.sub.2 O.sub.3, 15-30% of TiO.sub.2, 30 to 55% of SiO.sub.2, 0-5% of Al.sub.2 O.sub.3, 0-5% of Bi.sub.2 O.sub.3, 0.05-3% of Fe.sub.2 O.sub.3 (total iron) and 0.1-3% of sulphur (total sulphur).

REFERENCES:
patent: 3216847 (1965-11-01), Armant
patent: 3654505 (1972-04-01), Davis et al.
patent: 5250475 (1993-10-01), Zybell et al.
patent: 5512521 (1996-04-01), Fu et al.
Tupy et al.. Chemical Abstracts, vol. 90, No. 24, 11 Jun. 1979 Abstract No. 191464v.

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