Very dark grey colored glass soda-lime.

1996 
The present invention relates to a soda-lime glass colored very dark gray. This glass contains as coloring elements iron, cobalt and selenium in the following proportions (in percentage by weight of the glass in the form shown): Fe2O3 1.00 to 1.65%, Co of 0.017 and 0.030% is from 0.001 to 0.010%. The glass has a light transmission, measured for a 4 mm glass thickness with illuminant A (TLA4) of less than 20% and a total energy transmission, measured for a 4 mm glass thickness (TE4) of less than 20% . This glass is particularly suitable sunroofs for vehicles.
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