Dark grey soda-lime glass
First Claim
1. Soda lime glass, comprising:
- glass forming constituents for soda lime glass; and
coloring agents including iron, cobalt, selenium and chromium expressed in the form indicated in an amount as percent by weight of the soda lime glass as follows;
from 1.05 to 1.80% of Fe2 O3,from 0.0040 to 0.0180% of Co,from 0.0003 to 0.0040% of Se, andfrom 0.0010 to 0.0100% of Cr2 O3,wherein the soda lime glass has a dark grey color, a total energy transmission measured for a glass thickness of 4 mm (TE4) ranging between 15 to 40%, a selectivity (SE4) which is at least 1.2, and an excitation purity which does not exceed 10%.
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Accused Products
Abstract
Soda lime glass includes glass forming constituents for soda lime glass; and coloring agents including iron, cobalt, selenium and chromium express in the form indicated and in an amount as percent by weight of the soda lime glass as follows:
from 1.05 to 1.80% of Fe2 O3,
from 0.0040 to 0.0180% of Co,
from 0.0003 to 0.0040% of Se, and
from 0.0010 to 0.0100% of Cr2 O3.
The soda lime glass has a dark grey color, a total energy transmission measured for a glass thickness of 4mm (TE4) mm (TE4) ranging between 15 to 40%, a selectivity (SE4) which is high and is at least 1.2, and an excitation purity which does not exceed 10%. This glass is particularly suitable for automobile rear windows or rear side windows.
61 Citations
15 Claims
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1. Soda lime glass, comprising:
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glass forming constituents for soda lime glass; and coloring agents including iron, cobalt, selenium and chromium expressed in the form indicated in an amount as percent by weight of the soda lime glass as follows; from 1.05 to 1.80% of Fe2 O3, from 0.0040 to 0.0180% of Co, from 0.0003 to 0.0040% of Se, and from 0.0010 to 0.0100% of Cr2 O3, wherein the soda lime glass has a dark grey color, a total energy transmission measured for a glass thickness of 4 mm (TE4) ranging between 15 to 40%, a selectivity (SE4) which is at least 1.2, and an excitation purity which does not exceed 10%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification
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- Resources
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Current AssigneeGlaverbel
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Original AssigneeGlaverbel
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InventorsD'Hont, Daniel, Dupont, Camille
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Primary Examiner(s)Group, Karl
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Application NumberUS08/707,255Time in Patent Office910 DaysField of Search501/71, 501/905, 501/64US Class Current501/71CPC Class CodesC03C 17/23 Oxides C03C17/02 takes prec...C03C 2217/21 OxidesC03C 3/085 containing an oxide of a di...C03C 3/095 containing rare earthsC03C 4/02 for coloured glassC03C 4/085 for ultraviolet absorbing g...Y10S 501/905 Ultraviolet transmitting or...
