Abstract: The invention relates to a coloured soda-lime glass of blue hue, containing more than 2 wt. % of MgO, more than 1.1 wt. % of Fe2O3, less than 0.53 wt. % of FeO and less than 0.13 wt. % of MnO2, and presenting under Illuminant A and for a glass thickness of 4 mm, a transmission factor (TLA4) higher than 15%, a selectivity (SE4) higher than 1.2 and a dominant wavelength (?D) and a purity of excitation (P) such that they are located in the CIE chromaticity co-ordinate diagram inside a triangle whereof the apices are defined by the point representing the illuminant source C and the points whereof the co-ordinates (?D, P) are (490,19) and (476,49) respectively. Said glass is particularly suitable for motor vehicle side windows, rear windows and sun roof.

Abstract: The invention relates to blue colored sodiocalcic glass. It contains 0.15 to 1.1 wt. % Fe2O3, has a redox that does not exceed 45%, exhibits a dominant wavelength (?D) in the range of 490 and 493 nm and a luminous transmission (TLA4) in addition to an excitation purity (P) satisfying the relation P>?0.3×TLA4+24.5. The inventive glass is particularly suitable for windscreens, side windows and rear-window defoggers in motor vehicles and glazing in buildings.

Abstract: The present invention relates to a glazing comprising: a substrate made of colored soda-lime glass composed of main glass-forming constituents and of coloring agents, which exhibits a selectivity (LT/ET) of at least 1.1, measured with Illuminant C for a glass thickness of 4 mm, and a coating deposited by pyrolysis on the colored glass substrate. The coating is a coating which provides the coated glazing with an increased selectivity with respect to the selectivity of the uncoated colored glass. Such a glazing is particularly used for vehicles of the motor vehicle or train type, or alternatively for buildings.

Abstract: The invention concerns a colored soda-lime glass comprising an amount of MgO more than 2%, an amount of Fe2O3 less than 1.1%, and amount of MnO2 less than 1300 ppm, an amount of Co more that 55 ppm and it has a selectivity (SE4) higher than 1.2 and a dominant wavelength ?D not exceeding 490 nm and excitation purity (P) more than 10%. Said glass is particularly suited for rear side windows, back windows and glass sun roofs for motor vehicle.

Abstract: The present invention relates a coloured soda-lime glass which comprises iron in a quantity which, expressed in weight of the oxide Fe2O3 in relation to the total weight of glass, is greater than or equal to 0.5, and less than or equal to 1.0% (quantity of total iron), a ratio of Fe2+/total Fe (redox ratio) in the range of between 20 and 65% and titanium in a quantity which, expressed in weight of TiO2 in relation to the total weight of glass, is greater than or equal to 1.0%. This glass has a light transmission (TLA4) in the range of between 15 and 55%, a total transmission in the ultraviolet (TUV4) of less than or equal to 30%, and a dominant wavelength in transmission (?D) of less than or equal to 491 nm. This glass can be used, for example, as side glazing, rear-view window, roof glazing or opening roof of a motor vehicle.

Abstract: The present invention relates to a coloured soda-lime glass which comprises iron in a quantity which, expressed in weight of the oxide Fe2O3 in relation to the total weight of glass, is greater than or equal to 0.5, and less than or equal to 1.0% (quantity of total iron), a ratio of Fe2+/total Fe (redox ratio) in the range of between 20 and 65%, cerium in a quantity which, expressed in weight of CeO2 in relation to the total weight of glass, is greater than or equal to 0.1%, and titanium in a quantity which, expressed in weight of TiO2 in relation to the total weight of glass, is greater than or equal to 0% and less than 0.2%. This glass has a light transmission (TLA4) in the range of between 15 and 55%, a total transmission in the ultraviolet (TUV4) of less than or equal to 30%, and a dominant wavelength in transmission (?D) of less than or equal to 491 nm. This glass can be used, for example, as side glazing, rear-view window, roof glazing or opening roof of a motor vehicle.

Abstract: The invention relates to blue coloured sodiocalcic glass. It contains 0.15 to 1.1 wt. % Fe2O3, has a redox that does not exceed 45%, exhibits a dominant wavelength (&lgr;D) in the range of 490 and 493 nm and a luminous transmission (TLA4) in addition to an excitation purity (P) satisfying the relation P>−0.3×TLA4+24.5. The inventive glass is particularly suitable for windscreens, side windows and rear-window defoggers in motor vehicles and glazing in buildings.

Abstract: Disclosed are laminated glazings with low light transmission for use in motor vehicles. The glazings include at least two glass sheets assembled by means of a thermoplastic interlayer sheet, which have a light transmission (TL) less than 35%, an energy transmission less than 15%, and calorimetric characteristics such that on the CIE chromaticity diagram it is included within the perimeter defined by the co-ordinate points: B(0.2600; 0.3450); F(0.3300; 0.3300); G(0.3150; 0.2900); H(0.2350; 0.2750).

Abstract: The invention concerns a coloured soda-lime glass deep coloured with a green-to-blue shade. It contains 0.40 to 0.52 wt. % of FeO, present under illuminant A and for a glass thickness of 4 mm, a light transmittance (TLA4) less than 70%, a selectivity (SE4) higher than 1.65 and an ultraviolet radiation transmittance (TUV4) less than 8%. Said glass is particularly suited for lateral rear glazing and rear glazing for motor vehicles.

Abstract: The invention concerns a soda-lime glass. Said coloured glass contains at least 5 parts per million of Co by weight and 0.5 to 0.9 wt. % Fe2O3 oxide. The amount of ferrous iron by weight of Fe2+ 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.

Abstract: The invention relates to a coloured soda-lime glass of blue hue, containing more than 2 wt. % of MgO, more than 1.1 wt. % of Fe2O3, less than 0.53 wt. % of FeO and less than 0.13 wt. % of MnO2, and presenting under Illuminant A and for a glass thickness of 4 mm, a transmission factor (TLA4) higher than 15%, a selectivity (SE4) higher than 1.2 and a dominant wavelength (&lgr;D) and a purity of excitation (P) such that they are located in the CIE chromaticity co-ordinate diagram inside a triangle whereof the apices are defined by the point representing the illuminant source C and the points whereof the co-ordinates (&lgr;D, P) are (490,19) and (476,49) respectively. Said glass is particularly suitable for motor vehicle side windows, rear windows and sun roof.

Abstract: The present invention relates to a coloured soda-lime glass of high light transmission. It comprises less than 0.4% by weight of total amount of iron, expressed in the form of Fe2O3, has a redox ratio of at least 30% with an FeO content of at least 0.08% by weight and comprises in total at least 5 ppm and at most 1500 ppm by weight with respect to the total weight of glass of at least one of the following colouring agents in the respective amounts indicated: Cr2O3 from 0 to 500 ppm, V2O5 from 0 to 1000 ppm, Co from 0 to 100 ppm and Se from 0 to 10 ppm. This glass is suitable as glazing for motor vehicles and as glazing intended for buildings.

Abstract: The invention relates to glazings adapted for automotive vehicle roofs. The glazing according to the invention comprises: a first sheet of glass on the external face of the roof; a second sheet of glass at at least a portion of the internal surface arranged towards the interior; an intermediate sheet of one or more traditional thermoplastic materials used for forming laminated glazings, which extends at least over the surfaces of the sheet of glass which face each other; functional non-transparent elements arranged under the first sheet of glass; the transparent laminated portion having a luminous transmittance of less than 35 percent and an energy transmittance less than 20 percent.