LOW IRON, HIGH REDOX RATIO, AND HIGH IRON, HIGH REDOX RATIO, SODA-LIME-SILICA GLASSES AND METHODS OF MAKING SAME
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United States of America Patent
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Issued Date -
Oct 16, 2014
app pub date -
Apr 14, 2014
filing date -
Apr 15, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A glass has a basic soda-lime-silica glass portion, and a colorant portion including total iron as Fe2O3 selected from the group of total iron as Fe2O3 in the range of greater than zero to 0.02 weight percent; total iron as Fe2O3 in the range of greater than 0.02 weight percent to less than 0.10 weight percent and total iron as Fe2O3 in the range of 0.10 to 2.00 weight percent; redox ratio in the range of 0.2 to 0.6, and tin and/or tin compounds, e.g. SnO2 greater than 0.000 to 6.0 weight percent. In one embodiment of the invention, the glass has a tin side and an opposite air side, wherein the tin side of the glass is supported on a molten tin bath during forming of the glass. The tin concentration at the tin side of the glass is greater than, less than, or equal to the tin concentration in “body portion” of the glass. The “body portion” of the glass extending from the air side of the glass toward the tin side and terminating short of the tin side of the glass.
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