Transparent tile glaze

Details Transparent tile glaze Transparent tile glaze

2006-05-02

2006-05-02

Sample, David (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S022000, C501S023000, C501S061000, C501S062000, C501S066000, C501S067000, C501S070000, C501S072000, C065S017300, C065S060500, C065S060530, C065S060800, C427S193000, C427S201000, C427S419600

Reexamination Certificate

active

07037868

ABSTRACT:
The present invention provides zinc-free glass frits that can be used to formulate glaze compositions that develop glossy surfaces when fired on ceramic products such as floor tile and wall tile. The zinc-free glass frits include, by weight, from about 50% to about 70% SiO2, from about 5% to about 20% CaO, from about 3% to about 15% Al2O3, up to about 20% BaO, up to about 15% B2O3, up to about 10% K2O, up to about 10% Na2O, up to about 10% ZrO2, up to about 5% MgO and up to about 5% PbO and less than 0.5% ZnO. Glaze compositions comprising the zinc-free glass frits can be fired using conventional double fast firing, single fast firing, and gres porcellanato ceramic firing cycles.

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