Coloured soda-lime glass
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United States of America Patent
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Dec 4, 2007
Grant Date -
Aug 12, 2004
app pub date -
Jun 14, 2001
filing date -
Jun 19, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a soda-lime glass. Said colored glass contains at least 5 parts per million of Co by weight and 0.5 to 0.9 wt. % Fe.sub.2O.sub.3 oxide. The amount of ferrous iron by weight of Fe.sup.2+ atoms relative to the total weight of iron atoms present in the glass ranges between 25 and 45%. Said glass further comprises chromium and/or vanadium. The glass has a light transmission factor TLA4 ranging between 10 and 50% and an energy transmission wavelength less than 491 nm. Said glass is particularly suited for producing blue-tinted glazing for motor vehicles.
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