Low iron, high redox ratio, and high iron, high redox ratio, soda-lime-silica glasses and methods of making same
AssigneeVitro Flat Glass LLC
InventorsMark O. Naylor, Lawrence E. Jansen, Larry J. Shelestak
Life of this patent
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Abstract
A glass has a basic soda-lime-silica glass portion, and a colorant portion, the colorant portion including total iron as Fe2O3 in the range of at least 0.10 to no more than 2.00 weight percent, a redox ratio in the range of 0.35 to 0.6, and tin metal providing tin in an amount within the range of greater than 0.005 to 5.0 weight percent; the glass product has a tin side and an opposite air side, said tin side of the glass having a higher concentration of tin than the air side, the air side having a uniform concentration of tin from the air side of the glass product towards the tin side of the glass product.
Claims17
A glass, comprising:
- a basic soda-lime-silica glass portion, wherein the basic soda-lime-silica glass portion comprises:
- SiO2
- 65-80 wt. %
- Na2O
- 10-20 wt. %
- CaO
- 5-15 wt. %
- MgO
- 0-8 wt. %
- Al2O3
- 0-5 wt. %
- K2O
- 0-5 wt. %;
- and
- a colorant portion, the colorant portion comprising:
- total iron as Fe2O3 in the range of at least 0.10 to no more than 2.00 weight percent, a redox ratio in the range of 0.35 to 0.6, and tin in an amount within the range of 0.4 to 3.0 weight percent;
- wherein the glass product has a tin side and an opposite air side, said tin side of the glass having a higher concentration of tin than the air side, the air side having a uniform concentration of tin from the air side of the glass product towards the tin side of the glass product.
Dependencies are inferred from the claim text.