Bismuth-containing lead-free glass enamels and glazes of low...

C - Chemistry – Metallurgy – 03 – C

Patent

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C03C 8/02 (2006.01) B05D 3/02 (2006.01) C03C 3/14 (2006.01) C03C 8/04 (2006.01) C03C 8/10 (2006.01) C03C 8/20 (2006.01)

Patent

CA 2105207

This invention relates to a lead-free glass coating made by firing a lead-free glass composition comprising in weight percent from about 35% to about 77% of bismuth oxide, from about 10% to about 33% of boron oxide, and from about 10% to about 32% of zinc oxide at a temperature sufficient to fuse and cure the glass composition. The invention also relates to lead-free glazes and enamels that exhibit excellent acid resistance, possess low coeffi- cients of linear or thermal expansion, and moderate maturation temperatures.

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