Abstract: The invention relates to the field of display panels, especially field-emission display panels. The subject of the invention is a glass composition intended for the manufacture of a substrate for a display panel, having an infrared radiation transmission factor measured at 910 nm (TIR910) of 40% or less, an overall light transmission factor under illuminant D65 (TLD65) of greater than 40%, a dominant wavelength (?D) that varies from 480 to 570 nm and a purity of 8% or less, these values being measured with a glass thickness of 2.8 mm, said composition comprising the following coloring agents, in percentages by weight: Fe2O3 0.4-2%?? FeO 0.1-0.6% CoO ?0-200 ppm Se ?0-30 ppm NiO 0-1000 ppm CuO ?0-6600 ppm.

Abstract: An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein the glass has a turquoise blue or deep green color.

Abstract: Decorative paints are typically burned in at relatively high temperatures, preferably in connection with the thermal ceramicizing process. In order to provide a glass ceramic panel having a cooking surface with a pleasing deep black, very smooth decoration by a burned-in decorative paint, the glass ceramic panel is formed from a melt that is black and the decorative paint on the black glass ceramic panel contains a colorless glass flux and from 0 to 10 percent by weight of at least one black pigment. The decorative paint can consist of the colorless melted-on glass flux. The glass flux preferably has a composition in percent by weight of Li2O, 0-5; Na2O, 0-5; K2O, <2; ?Li2O+Na2O+K2O, 1-10; MgO, 0-3; CaO, 0-4; SrO, 0-4; BaO, 0-4; ZnO, 0-4; B2O3, 15-27; Al2O3, 10-20; SiO2, 43-58; TiO2, 0-3; ZrO2, Sb2O3, 0-2; F, 0-3.

Abstract: The invention relates to the field of displays. One subject of the invention is a glass composition intended for the production of a substrate for a field-emission display, which has an overall light transmission factor under illuminant D65 (TLD65) that varies from 45 to 80% and is preferably equal to 72% or less, measured for a glass thickness of 2.8 mm, and a blue-gray coloration defined by the following chromatic coordinates: a*=?4 to +1, preferably ?2 to 0; and b*=?6 to +3, preferably ?2 to 0. The substrates obtained advantageously have a reflection brightness (R) of less than 10 Cd/m2.

Abstract: A glass plate; a glass plate having a thickness of 2 to 3 mm; a glass plate obtained by a float process; and, a window glass for automobiles.

Abstract: A plasma display panel is able to contrast thereof by increasing a color temperature of the plasma display panel, which comprises a dielectric layer controlling a light transmittance for visible light of a certain wavelength emitted from a phosphor in the plasma display panel.

Abstract: A light blue flat glass which is soda-lime-silica glass and which contains Nd in such an amount that the content based on Nd2O3 represented by mass percentage, is from 0.001 to 0.1%, and no Co or Co in such an amount that the content based on CoO as represented by mass percentage, is less than 0.1 ppm.

Abstract: A glass having a visible transmission of no greater than 28% and low IR transmission, and employing a colorant portion: total iron (expressed as Fe2O3): 0.7 to 1.8% cobalt oxide (e.g., Co3O4): 0.001 to 1.0% titanium oxide (e.g., TiO2): 0.25 to 3.0% selenium (e.g., Se): 0 to 0.0020% chromium oxide (e.g., Cr2O3): 0 to 0.010%.

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. % 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: A plasma display panel is able to contrast thereof by increasing a color temperature of the plasma display panel, which comprises a dielectric layer controlling a light transmittance for visible light of a certain wavelength emitted from a phosphor in the plasma display panel.

Abstract: The subject of the invention is a gray glass composition of the soda-lime-silicate type having an overall light transmission under illuminant A (TLA) greater than 67% for a glass thickness equal to 3.85 mm, which comprises the constituents below within the following limits by weight: SiO2 64–75% Al2O3 ?0–5% B2O3 ?0–5% CaO ?5–15% MgO ?0–5% Na2O 10–18% K2O ?0–5% and the coloring agents below within the following limits by weight: Fe2O3 0.25–0.65% and preferably 0.5–0.65% CoO less than 20 ppm, preferably less than or equal to 15 ppm NiO 40–250 ppm and preferably 70–150 ppm Se 0–5 ppm where Fe2O3 is the total iron.

Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.

Abstract: A method for reducing the defect density of glass comprising melting a glass composition comprising from 65–75 wt. % of SiO2; from 10–20 wt. % of Na2O; from 5–15 wt. % of CaO; from 0–5 wt. % of MgO; from 0–5 wt. % of Al2O3; from 0–5 wt. % of K2O; from 0–2 wt. % Fe2O3; and from 0–2 % FeO, wherein the glass composition has a total field strength index of greater than or equal to 1.23 is disclosed.

Abstract: A grey glass composition employing in its colorant portion at least iron (Fe2O3/FeO), cerium, cobalt and selenium is provided. The glass allows high visible transmission, and satisfactory IR and UV absorption, while at the same time achieving desired grey color. In certain example embodiments, the colorant portion includes, or may consist essentially of: total iron (expressed as Fe2O3): ?0.25 to 0.70% cerium oxide: ?0.01 to 1.0% selenium: 0.0001 to 0.05% cobalt oxide: 0.0001 to 0.05% titanium oxide: ???0 to 1.0% glass redox: >=0.30.

Abstract: A high transmittance fairly clear/neutral colored glass composition is provided. An oxidizing agent(s) such as cerium oxide (e.g., CeO2) or the like is added to the glass batch in order to realize very oxidized conditions (i.e., to significantly lower the redox of the resulting glass). As a result of the oxidizing agent(s) used in the batch, the iron is oxidized to a very low FeO (ferrous state) content. For example, this may result in a glass having a glass redox value of no greater than 0.12 (more preferably <=0.10; even more preferably <=0.08; and most preferably <=0.05) and a % FeO (i.e., ferrous content) of from 0.0001 to 0.05%. In certain example embodiments, in order to compensate for yellow or yellow-green coloration a small amount of cobalt (Co) may be provided in the glass to enable it to realize a more neutral color.

Abstract: A grey glass composition employing as its colorant portion at least iron (Fe2O3/FeO), cobalt and possibly erbium oxide (e.g., Er2O3) is provided. The glass enables high visible transmission, and satisfactory IR absorption, while at the same time achieving desired grey color. In certain example embodiments, the colorant portion includes: total iron (expressed as Fe2O3): <=0.35% erbium oxide (e.g., Er2O3): 0 to 0.3% selenium (Se): <=15 ppm cobalt oxide (e.g., Co3O4): 5 to 60 ppm glass redox: >=0.35. In other example embodiments, the glass may include higher total iron and/or a lower minimum redox.

Abstract: A high transmittance glass sheet is provided that is formed of a soda-lime-silica glass composition containing, expressed in wt. %, less than 0.020% of total iron oxide in terms of Fe2O3 and 0.006 to 2.0% of zinc oxide. The glass sheet allows the formation of nickel sulfide particles to be suppressed by the addition of a zinc compound to a glass raw material.

Abstract: A neutral gray colored glass composition for automotive vision panels having reduced transmitted color shift characteristics is provided. The glass composition has a base portion including 65 to 75 weight percent SiO2, 10 to 20 weight percent Na2O, 5 to 15 weight percent CaO, 0 to 5 weight percent MgO, 0 to 5 weight percent Al2O3, and 0 to 5 weight percent K2O. The composition also includes major colorants including 0.30 to 0.75 weight percent Fe2O3, 0 to 15 ppm CoO, and 1 to 15 ppm Se. The glass has a luminous transmittance of at least 65 percent at a thickness of 3.9 mm, a redox ratio of 0.2 to 0.675, a TSET of less than or equal to 65 percent, and a standard color shift of less than 6.

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: An infrared and ultraviolet absorbing soda-lime-silica glass of a neutral tint containing 0.3% to 0.7% by weight total iron expressed as Fe2O3, together with amounts of Se, Co3O4 and a ferrous iron content to provide a ratio of ferrous iron to total iron in the range of 21 to 34. NiO and TiO2 may be added to the glass. The resultant glass, in a nominal 4 mm thickness, has a visible light transmission of at least 70% and a direct solar heat transmission at least 12 percentage points below the visible light transmission. The iron in the glass is preferably provided by the inclusion of the mineral wuestite in the glass batch formulation.

Abstract: A blue glass composition comprises a soda-lime-silica base and a colorant portion consisting essentially of about 0.4 to 0.65 weight percent total iron oxide, about 0.1 to 0.3 weight percent manganese oxide, and cobalt oxide in an amount effective to produce a cobalt concentration of about 0.0002 to 0.0013 weight percent (about 2 to 13 ppm). The glass is characterized by a ratio of ferrous oxide to total iron oxide between about 0.43 and 0.58. The glass composition exhibits a combination of high visible transmittance, high infrared absorption and enhanced blue coloration. This is attributed in large part to the combination of ferrous oxide and cobalt oxide and to the effect of manganese oxide in reducing iron sulfide formation and thereby avoiding amber coloration.

Abstract: A forehearth color concentrate comprising a non-smelted agglomerated interspersion of particles for use in coloring, said concentrate comprising by weight from about 50% to about 95% of a glass component and from about 4% to about 50% of a binder, said glass component comprising by weight from about 15% to about 35% chromium oxide. The present invention further provides a method of using the color concentrate.

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: A method is provided for making clear glass having an azure edge coloration and low amber surface coloration in a non-vacuum float glass system. The method includes processing batch materials in a non-vacuum float glass system to provide a final glass product including: SiO2 65-75 wt. %;? Na2O 10-20 wt. %;? CaO 5-15 wt. %;? MgO 0-5 wt. %; Al2O3 0-5 wt. %; K2O 0-5 wt. %; a colorant portion having total iron (Fe2O3) of 0-0.02 wt. %, CoO of 0-5 ppm, Nd2O3 of 0-0.1 wt. %, and CuO of 0-0.03 wt. %. The glass has a redox ratio in the range of 0.2 to 0.6, and can have a retained sulfur content of less than or equal to 0.2 wt. %, such as less than or equal to 0.11 wt. %.

Abstract: A glass having a visible transmission of no greater than 28% and low IR transmission, and employing a colorant portion: total iron (expressed as Fe2O3): ?0.7 to 1.8% cobalt oxide (e.g., Co3O4): 0.001 to 1.0% titanium oxide (e.g., TiO2): ?0.25 to 3.0% selenium (e.g., Se): ???0 to 0.0020% chromium oxide (e.g., Cr2O3): ???0 to 0.010%.

Abstract: A blue colored, infrared and ultraviolet absorbing glass composition having a luminous transmittance of up to 60 percent can form transparent glass panel sets for mounting in automobiles. A non-limiting glass composition includes a standard soda-lime-silica glass base composition and a solar radiation absorbing and colorant portion having 0.9 to 2.0 percent by weight total iron, 0.15 to 0.65 percent by weight FeO, 90 to 250 PPM CoO, and optionally up to 12 PPM Se and up to 0.9 wt % TiO2, and preferably 1 to 1.4 percent by weight total iron, 0.20 to 0.50 percent by weight FeO, 100 to 150 PPM CoO, up to 8 PPM Se, and up to 0.5 wt % TiO2, at a thickness of 0.160 inches (4.06 millimeters) the glass has a dominant wavelength in the range of 480 to 489 nanometers and an excitation purity of at least 8 percent.

Abstract: A soda-lime-silica based privacy glass, having a visible transmission (Lta) of no greater than 25% and an infrared (IR) transmission no greater than 25%, includes the following colorants in addition to the base glass: total iron (expressed as Fe2O3): 0.1 to 1.0% cobalt oxide (e.g., Co3O4): 0 to 1,000 ppm sulfides (S2?): 0.0001 to 0.10%. In certain other embodiments the visible transmission may be higher, but low IR transmission is still realized.

Abstract: A high transmittance glass sheet is provided that is formed of a soda-lime-silica glass composition containing, expressed in wt. %, less than 0.020% of total iron oxide in terms of Fe2O3 and 0.006 to 2.0% of zinc oxide. The glass sheet allows the formation of nickel sulfide particles to be suppressed by the addition of a zinc compound to a glass raw material.

Abstract: A method is provided for adjusting, e.g., lowering, the melting and/or forming temperatures of a glass composition without substantially changing the bending and annealing temperatures of the glass composition. The method includes increasing the amount of CaO and decreasing the amount of MgO in the glass composition by the same or about the same amount.

Abstract: An ultraviolet ray-absorbing, colorless and transparent soda-lime-silica glass is disclosed, which glass is prepared by irradiating a cerium containing soda-lime-silica glass with light having wavelengths in far- to near-ultraviolet region and thereby reducing transmittance to light with wavelengths in the region of 300-400 nm.

Abstract: A glass composition having excellent reinforcing capability and excellent solar control performance includes not smaller than 65 wt. % and smaller than 74 wt. % SiO2, 0-5 wt. % B2O3, 0.1-2.5 wt. % Al2O3, not smaller than 0 wt. % and smaller than 2 wt. % MgO, 5-15 wt. % CaO, 0-10 wt. % SrO, 0-10 wt. % BaO wherein a total amount of MgO, CaO, SrO and BaO is greater than 10 wt. % and not greater than 15 wt. %, 0-5 wt. % Li2O, 10-18 wt. % Na2O, 0-5 wt. % K2O wherein a total amount of Li2O, Na2O, and K2O is 10-20 wt. % and 0-0.40 TiO2.

Abstract: A blue-green colored glass composition includes a base portion, such as a conventional soda-lime-silica base, and major colorants. In one embodiment, the major colorants include 0.7 to 0.9 weight percent total iron (Fe2O3), 0.2 to 0.3 weight percent FeO, and 0 to 5 ppm CoO. The glass is characterized by a dominant wavelength in the range of 490 nm to 495 nm and an excitation purity in the range of 3% to 11%. The glass of the invention can be essentially free of Se.

Abstract: The present invention is to provide a high transmittance glass sheet that has a composition containing as coloring components, expressed in wt. %, 0.005 to less than 0.02% of total iron oxide in terms of Fe2O3, less than 0.008% of FeO, and 0 to 0.25% of cerium oxide and having a ratio of FeO in terms of Fe2O3 to the total iron oxide of lower than 40%, and exhibits high visible light transmittance and solar radiation transmittance. Alternatively, a high transmittance glass sheet is provided that contains not more than 0.06% of total iron oxide and 0.025 to 0.20% of cerium oxide and has a ratio of a fluorescence intensity at 395 nm to a fluorescence intensity at 600 nm of 10% or higher when subjected to ultraviolet irradiation at a wavelength of 335 nm.

Abstract: A glass has greenish color shade, a medium visible light transmittance, a low solar energy transmittance, and a low ultraviolet transmittance, and is suitable for a rear window of a vehicle arranged next to an ultraviolet/infrared absorbent glass with high light transmittance. The glass is formed of a base glass including 65 to 80 wt. % SiO2, 0 to 5 wt. %, Al2O3; 2 to 10 wt. % MgO, 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. % (excluding 7 wt. %), 10 to 18 wt. % Na2O, 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %, and 0 to 5 wt. % B2O3; and colorants including 1.0 to 1.35 wt. % total iron oxide as Fe2O3, 0.001 to 0.05 wt. % NiO, and 0 to 0.006 wt. % CoO (excluding 0.006 wt. %).

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: A high transmittance glass sheet is provided that is formed of a soda-lime-silica glass composition containing, expressed in wt. %, less than 0.020% of total iron oxide in terms of Fe2O3 and 0.006 to 2.0% of zinc oxide. The glass sheet allows the formation of nickel sulfide particles to be suppressed by the addition of a zinc compound to a glass raw material.

Abstract: The present invention is a bronze and gray glass composition. The composition comprises 68 to 75% SiO2, 10 to 18% Na2O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al2O3, and 0 to 5% K2O, where CaO+MgO is 6 to 15% and Na2O+K2O is 10 to 20%, and colorants comprising: 0.22 to 0.39 wt. % total iron as Fe2O3 wherein the ratio of FeO/total Fe as Fe2O3 is 0.35 to 0.64; 0.1 to 0.5 wt. % manganese compound as MnO2; 0 to 1.2 wt. % cerium oxide as CeO2; and 2 to 10 ppm selenium, and 0 to 20 ppm cobalt as cobalt oxide. The colored glass has the following spectral properties at 4.0 mm. thickness: 65 to 78% light transmittance using Illuminant A (LTA) and using Illuminant C has a dominant wavelength of 493 to 577 nanometers with an excitation purity up to 7%.

Abstract: On producing CRT funnel glass from CRT panel glass or CRT frit, Fe2O3 is added in a range of 0.05 to 1 mass % so that the fluctuation of transmittance of light having a wavelength of 1,050 nm becomes 10% or less, at a thickness of 10 mm of the produced CRT funnel glass.

Abstract: The cooking panel is made from an opaque glass-ceramic material uniformly colored throughout and having keatite mixed crystals as the predominant crystalline phase. The cooking panel is made by ceramicizing a ceramicizable glass or a transparent glass-ceramic with high quartz mixed crystals as the predominant crystalline phase in a definite color location range with a brightness parameter value (L*) less than 85 and a color shade and chromaticity according to its later service and wear pattern. The cooking panel makes deposited material, such as dirt and the like, less conspicuous.

Abstract: A method is provided for making clear glass having an azure edge coloration and low amber surface coloration in a non-vacuum float glass system. The method includes processing batch materials in a non-vacuum float glass system to provide a final glass product including: 1 SiO2 65-75 wt. %;  Na2O 10-20 wt. %;  CaO 5-15 wt. %;  MgO 0-5 wt. %; Al2O3 0-5 wt. %; K2O 0-5 wt.

Abstract: The invention relates to a plant and to a process for manufacturing a glass, comprising the production of a main stream of a liquid main glass, by a main plant that includes a main furnace, and the production of an auxiliary stream of a liquid auxiliary glass, by an auxiliary plant that includes an auxiliary furnace having a submerged burner, the auxiliary stream being smaller than the main stream, the auxiliary glass having a composition different from that of the main glass and the two streams then being mixed to form a single total stream of the final glass. The auxiliary furnace especially provides the function of coloring the main glass so that the final glass is a colored glass. A highly homogeneous and bulk-colored flat glass may thus be manufactured by an installation having short transition times.

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: A method is provided for adjusting, e.g., lowering, the melting and/or forming and/or liquidus temperatures of a glass composition which can be accomplished without substantially changing the bending and annealing temperatures of the glass composition. The method includes decreasing the amount of MgO in the glass composition and increasing the amount of two or more or all of CaO, R2O (Na2O and K2O), Al2O3 and SiO2 by the same or about the same amount.

Abstract: Low transmittance glass is composed of soda-lime-silica glass including 0.001 to 2 wt. % Li2O and, as colorant, 0.7 to 2.2 wt. % total iron oxide expressed as Fe2O3 (T-Fe2O3) . The glass has visible light transmittance (YA) of not greater than 65%, measured by using the CIE illuminant A, total solar radiation transmittance (TG) of not greater than 60%, and ultraviolet transmittance defined by ISO 9050 of not greater than 25%, when the glass has a thickness between 2.1 mm and 6 mm.

Abstract: An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein the glass has a turquoise blue or deep green color.

Abstract: The subject of the invention is a gray glass composition of the soda-lime-silicate type having an overall light transmission under illuminant A (TLA) greater than 67% for a glass thickness equal to 3.

Abstract: The ultraviolet/infrared absorbent low transmittance glass has a grayish green color shade, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass is formed of a base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO, wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.0180 wt. % CoO; and 0.003 to 0.2 wt. % NiO.

Abstract: The ultraviolet/infrared absorbent low transmittance glass consists of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO (a total amount of MgO and CaO is between 5 to 15 wt. %); 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O (a total amount of Na2O and K2O is between 10 to 20 wt. %); and 0 to 5 wt. % B2O3; and colorants including: 1.2 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; greater than 0.03 wt. % CoO; less than 0.0001 wt. % Se; and 0 to 0.2 wt. % NiO. The glass has a visible light transmittance measured by the illuminant A of not greater than 12% in case that the glass has a thickness of 4 mm. The glass has almost neutral color such as bluish green shade or deep green shade, low visible light transmittance, low solar energy transmittance and low ultraviolet transmittance, so that it is useful for windows of vehicles or buildings particularly for thickness and weight reduction of a privacy preventing glass.