Forehearth concentrate and method for opalization of glass

Details Forehearth concentrate and method for opalization of glass Forehearth concentrate and method for opalization of glass

2007-09-04

2007-09-04

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S029000, C501S030000

Reexamination Certificate

active

11211133

ABSTRACT:
The invention provides an opalescent forehearth color concentrate comprising a non-smelted agglomerated interspersion of particles for use in coloring glass, said concentrate comprising by weight from about 10% to about 70% of a glass component and from about 30% to about 90% of one or more opalescent pigments, the glass component comprising by weight from about 10% to about 50% ZnO and about 15 to about 60% SiO2. The invention also provides a method of using the color concentrate.

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