Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1990-09-07
1992-10-06
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 26, 501 79, 501 73, C03C 804, C03C 814, C03C 866
Patent
active
051531500
ABSTRACT:
The present invention provides a new and useful composition and method of using the same for producing an enamel finish on a formed section of glass. The composition partially crystallizes upon heating, thereby helping to prevent the forming and handling equipment from sticking and/or adhering to the composition during the forming operation. The composition includes a crystallizable glass frit and seed powder. The crystallized glass frit includes precursors from which Zn.sub.2 SiO.sub.4 can be crystallized upon firing of the composition. The seed powder causes at least a portion of the precursors to crystallize upon firing such that during firing at least a portion of the crystallizable glass frit yields crystallized Zn.sub.2 SiO.sub.4 formed by the precursors. Preferably, the precursors contain 30-75 wt %/5-20 wt % SiO.sub.2, and the seed powder contains crystalline Zn.sub.2 SiO.sub.4.
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Roberts Gordon J.
Ruderer Clifford G.
Stroup Robert C.
Bell Mark L.
Ferro Corporation
Schull Lisa M.
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