Composition for colored glass intended for the manufacture of glazing panes
First Claim
1. A glazing set mounted on an automobile vehicle, comprising a windscreen, front side windows and rear side windows and a rear window, wherein each of the rear side windows, both movable and fixed, and the rear window comprise a glazing pane comprising a coloured glass sheet having a thickness of from 2 to 8 millimeters, wherein the coloured glass sheet has a composition comprising the following oxides within the following limits by weight:
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space="preserve" listing-type="tabular">______________________________________ SiO.sub.2 64 to 75% Al.sub.2 O.sub.3 0 to 5% B.sub.2 O.sub.3 0 to 5% CaO 5 to 15% MgO 0 to 5% Na.sub.2 O 10 to 18% K.sub.2 O 0 to 5% ______________________________________ and, consisting essentially of, as colouring agents;
space="preserve" listing-type="tabular">______________________________________ Fe.sub.2 O.sub.3 (total iron) 0.5 to 1.5% with FeO content representing from 16 to 55% of the total iron content expressed in the form of Fe.sub.2 O.sub.3 CoO 0.003 to 0.015% Cr.sub.2 O.sub.3 0.025 to 0.09% Se 0 to 0.0025% ______________________________________ wherein the glasses have a total energy transmission factor (TE) less than the light transmission factor under illuminant A (TLA), the factor TE being from 10 to 48% and the factor TLA from 20 to 60% for a thickness of 3.85 millimeters.
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Abstract
The invention concerns compositions of coloured glasses intended for the manufacture of glazing panes suitable for mounting in an automobile vehicle. The panes are of silico-sodo-calcic glasses having a total energy transmission factor (TE) less than the light transmission factor under illuminant A (TLA), the factor TE being from 10 to 48% and the factor TLA from 20 to 60% for a thickness of 3.85 nm; these glasses comprise (in % by weight), as colouring agents, from 0.45 to 2.5% of Fe2 O3 (total iron), from 0.001 to 0.02% of CoO, from 0 to 0.0025% of Se and from 0 to 0.1% of Cr2 O3.
57 Citations
3 Claims
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1. A glazing set mounted on an automobile vehicle, comprising a windscreen, front side windows and rear side windows and a rear window, wherein each of the rear side windows, both movable and fixed, and the rear window comprise a glazing pane comprising a coloured glass sheet having a thickness of from 2 to 8 millimeters, wherein the coloured glass sheet has a composition comprising the following oxides within the following limits by weight:
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space="preserve" listing-type="tabular">______________________________________ SiO.sub.2 64 to 75% Al.sub.2 O.sub.3 0 to 5% B.sub.2 O.sub.3 0 to 5% CaO 5 to 15% MgO 0 to 5% Na.sub.2 O 10 to 18% K.sub.2 O 0 to 5% ______________________________________and, consisting essentially of, as colouring agents;
space="preserve" listing-type="tabular">______________________________________ Fe.sub.2 O.sub.3 (total iron) 0.5 to 1.5% with FeO content representing from 16 to 55% of the total iron content expressed in the form of Fe.sub.2 O.sub.3 CoO 0.003 to 0.015% Cr.sub.2 O.sub.3 0.025 to 0.09% Se 0 to 0.0025% ______________________________________wherein the glasses have a total energy transmission factor (TE) less than the light transmission factor under illuminant A (TLA), the factor TE being from 10 to 48% and the factor TLA from 20 to 60% for a thickness of 3.85 millimeters. - View Dependent Claims (2, 3)
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Specification