Abstract: These color television (CTV) panel tint glasses involve using base CTV panel glass compositions with enhanced levels of Ni and Co colorants. The approach uses non-lead CTV panel glass compositions with high levels of Ni and Co oxide as colorant glasses for tinting clear CTV non-lead panel glass. Nickel oxide was varied from 2 to 18%, while cobalt oxide was varied from 0.2 to 2%. A preferred range of compositions with cobalt oxide levels below 1% and nickel oxide levels below 10% was found to be very acceptable for CTV panel colorants.

Abstract: The invention relates to brown glasses which absorb ultraviolet radiation that are used in the production of ophthalmic sun glasses, and that have the following composition, expressed in wt. %:______________________________________ SiO.sub.2 59-78 Al.sub.2 O.sub.3 2-6 B.sub.2 O.sub.3 0-3 Na.sub.2 O 7-16 K.sub.2 O 2-9 CaO 0-7 BaO 0-12 ZnO 0-12 ZrO.sub.2 0-6 TiO.sub.2 0-6 MnO.sub.2 0.25-6 V.sub.2 O.sub.5 1-3 Fe.sub.2 O.sub.3 0-1.5 NiO 0-0.5 CoO 0-0.1 Sb.sub.2 O.sub.3 0-0.7 As.sub.2 O.sub.3 0-0.7 F 0.05-1.0 With MnO.sub.2 + Fe.sub.2 O.sub.3 + V.sub.2 O.sub.5 >1.5 Al.sub.2 O.sub.3 + SiO.sub.2 .gtoreq.65.

Abstract: An ultraviolet and infrared radiation absorbing glass is disclosed, comprising, in % by weight:basic glass components comprising65 to 80% SiO.sub.2,0 to 5% Al.sub.2 O.sub.3,0 to 10% MgO,5 to 15% CaO,10 to 18% Na.sub.2 O,0 to 5% K.sub.2 O,5 to 15% MgO+CaO,10 to 20% Na.sub.2 O+K.sub.2 O,0 to 5% B.sub.2 O.sub.3, and0.07 to 0.18% SO.sub.3, andcoloring components comprising0.40 to 0.90% total ion oxide (T-Fe.sub.2 O.sub.3) in terms of Fe.sub.2 O.sub.3,1.0 to 2.0% CeO.sub.2, and0 to 1.0% TiO.sub.2,with 27 to 40% of said T-Fe.sub.2 O.sub.3 being FeO in terms of Fe.sub.2 O.sub.3.

Abstract: Applicant has synthesized a family of novel non-pillared metal oxide compositions which have a triple layered perovskite structure and a surface area of at least 30 m.sup.2 /g. These compositions are described by the empirical formulaAB.sub.2 M.sub.3 O.sub.10-xwhere A is a monovalent exchangeable cation such as cesium, B is a divalent or trivalent cation such as strontium or lanthanum and M is a +2, +3, +4 or a +5 valent metal such as niobium, titanium, aluminum or copper.

Abstract: A Green thermo-absorbent glass which includes a basic composition of lime glass, which consists essentially, by weight, of: 0.86 to 0.91% of total iron expressed as Fe.sub.2 O.sub.3 ; 23.5 to 26% of Fe.sup.-2 and 0.202 to 0.237% of FeO, expressed as Fe.sub.2 O.sub.3 ; a critical amount of 0.15 to 0.18% of SO.sub.3 which does not affects the refining properties and ability of the SO.sub.3 to eliminate bubbles, and in the absence of CeO.sub.2 ; the green glass having a visible light transmission greater than 70%, an ultra-violet radiation transmission greater than 38% and less than 40%, an infra-red radiation transmission greater than 21% and less than 26.5%. and a total solar transmission greater than 41 and less than 47%, without affecting the refining properties and ability of the SO.sub.3 to eliminate bubbles.

Abstract: Silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties. The phosphorus compound is generally a metal phosphide which is added to the batch glass composition in amounts greater than 0.05 weight percent prior to melting. The composition and method result in a finished glass suitable for use in architectural and automotive glazings.

Abstract: An ultraviolet and infrared radiation absorbing and low transmitting glass having neutral gray to neutral grayish green tint and also having low visible light and solar energy transmission and a low ultraviolet light transmission, further showing an excellent protection of interior trim of automobiles against deterioration and fading, and also showing privacy protection effect when applied especially to window glass of automobiles and to window glass of buildings. The ultraviolet and infrared radiation absorbing and low transmitting glass comprising in % by weight: basic glass components comprising 65 to 80% SiO.sub.2, 0 to 5% Al.sub.2 O.sub.3, 0 to 10% MgO, 5 to 15% CaO, 5 to 15% MgO+CaO, 10 to 20% Na.sub.2 O, 0 to 5% K.sub.2 O, 10 to 20% Na.sub.2 O+K.sub.2 O, and 0 to 5% B.sub.2 O.sub.3, and coloring components comprising 0.65 to 0.95% total iron oxide (T-Fe.sub.2 O.sub.3) in terms of Fe.sub.2 O.sub.3, 0.9 to 2.3% TiO.sub.2, 0 to 2.0% CeO.sub.2, 0.019 to 0.04% CoO, 0 to 0.002% Se, and 0.01 to 0.

Abstract: A soda-lime-silica glass having, at a thickness in the range of 3 mm to 10 mm, a visible light transmittance of 35% to 75%, a total solar radiation transmittance in the range of 20% to 60%, an ultraviolet radiation transmission less than 55%, and a blue color defined by the "CIELAB" system of L=65 to 90, a*=-15 to -4, and b*=-15 to -2. The soda-lime-silica glass composition includes the essential ingredients of about 0.5% to about 0.9% weight percent total iron (as Fe.sub.2 O.sub.3), about 50 ppm to 100 ppm CoO, and about 0.1 to about 2.0 weight percent TiO.sub.2, with a ferrous iron to total iron ratio of about 20% to about 40%.

Abstract: A colored glass composition, containing the following oxides within the following limits by weight:______________________________________ 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% and K.sub.2 O 0 to 5% ______________________________________and as coloring agents: ______________________________________ Fe.sub.2 O.sub.3 (total iron) 0.45 to 2.5% 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 0.001 to 0.02% Se 0 to 0.0009% ______________________________________wherein the glasses have a total energy transmission factor (T.sub.E) less than the light transmission factor under illuminant A (TL.sub.A), the factor T.sub.E being from 10 to 48% and the factor TL.sub.A from 20 to 60% for a thickness of 3.85 mm, the colored glass composition having an excitation purity equal to or less than 7.6%.

Abstract: The invention is a medium color gray soda-lime-silica glass composition having excellent ultra violet and infra red absorbing ability. The colorants of the glass composition consist essentially of: greater than 0.5 but less than 0.9 wt. % total iron oxide as Fe.sub.2 O.sub.3 ; 0.1 to 1.0 wt. % manganese compound as MnO.sub.2 ; 0.0005 to 0.003 wt. % selenium as Se; 0.002 to 0.010 wt. % cobalt oxide as Co; up to 1.0 TiO.sup.2 ; the glass composition having, at 4.0 mm. thickness: 485-570 dominant wavelength, less than 5% purity of excitation, 35 to 60% light transmittance using Illuminant A, less than 40% ultra violet transmittance measured over 300-400 nm, and less than 45% infra red transmittance measured over 760-2120 nm.

Abstract: The invention is a dark bronze soda-lime-silica glass composition having excellent ultra violet and infra red absorbing ability. The colorants of the glass composition consist essentially of: greater than 0.5% total iron oxide as Fe.sub.2 O.sub.3 with a maximum of 1.5% Fe.sub.2 O.sub.3, wherein the redox ratio of FeO/total Fe as Fe.sub.2 O.sub.3 is less than 0.26; 0.10 to 1.00 wt. % manganese compound as MnO.sub.2 ; 0.0005 to 0.004 wt. % selenium as Se; up to 0.016 wt. % cobalt oxide as Co; 0-1.0 wt. % TiO.sub.2, the glass composition having, at 4.0 mm. thickness: 570-585 dominant wavelength, 5-30% purity of excitation, 20 to 65% light transmittance using Illuminant A (LTA), less than 35% ultra violet transmittance measured over 300-400 nm, and less than 46% infra red transmittance measured over 760-2120 nm. At 20-50% LTA, the excitation purity is 7-30%, while above 50% LTA, the excitation purity is 5-20%. This glass is particularly useful for architectural applications.

Abstract: An ultraviolet and infrared radiation absorbing glass having excellent ultraviolet radiation absorbing power and a bronze or neutral gray tint which is suitably used as a window glass for vehicles of automobiles and also as a window glass for construction materials is provided. The glass comprises, in % by weight: basic glass components comprising 65 to 80% SiO.sub.2, 0 to 5% B.sub.2 O.sub.3, 0 to 5% Al.sub.2 O.sub.3, 0 to 10% MgO, 5 to 15% CaO, 10 to 18% Na.sub.2 O, 0 to 5% K.sub.2 O, 5 to 15% MgO+CaO, and 10 to 20% Na.sub.2 O+K.sub.2 O, and coloring components comprising 0.20 to 0.50% total iron oxide (T-Fe.sub.2 O.sub.3) in terms of Fe.sub.2 O.sub.3, 0 to 3.0% CeO.sub.2, 0.025 to 6.0% La.sub.2 O.sub.3, 0 to 2.0% TiO.sub.2, 0.0002 to 0.005% CoO, 0.0002 to 0.005% Se, 0 to 0.01% NiO, and 0 to 1.0% SnO.sub.2, wherein 5 to 25% of said T-Fe.sub.2 O.sub.3 in terms of Fe.sub.2 O.sub.3 is FeO.

Abstract: The ultraviolet/infrared absorbent low transmittance glass has an almost neutral greenish color, middle visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a window of a vehicle or a building and capable of preventing degradation and discoloration of interior materials and protecting privacy. The glass consists of base glass including: 65 to 80 wt. % SiO.sub.2 ; 0 to 5 wt. % Al.sub.2 O.sub.3 ; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is between sand 15 wt. %; 10 to 20 wt. % Na.sub.2 O; 0 to 5 wt. % K.sub.2 O wherein a total amount of Na.sub.2 O and K.sub.2 O is between 10 to 20 wt. %; and 0 to 5 wt. % B.sub.2 O.sub.3, and colorants including: 0.7 to 0.95 wt. % total iron oxide (T-Fe.sub.2 O.sub.3) expressed as Fe.sub.2 O.sub.3 ; 1.1 to 2.3% TiO.sub.2, 0 to 2.0% CeO.sub.2, 0.013 to 0.025 wt. % CoO; 0 to 0.0008% Se; and 0.01 to 0.07% NiO.

Abstract: Provided is a low iron containing glass particularly useful for automotive and architectural purposes which achieves low levels of UV, IR, and total solar (TS) transmittances without the use of nickel oxide, and in certain embodiments, through selective amounts of B.sub.2 O.sub.3.

Abstract: A process and glass batch composition are provided for producing a soda-lime-silica glass containing oxides of iron. The process includes admixing, heating and melting a soda-lime-silica float glass batch mixture in which wuestite is included as at least a partial source of the iron oxides in the resulting glass.

Abstract: The present invention relates to glass fibers, especially for reinforcing organic materials and having an alumino-silicate glass composition, containing one or more alkaline earth metal compounds and with a low content of alkali metal compounds, wherein the composition further contains a combination of coloring agents formed from iron oxides, cobalt oxide and, optionally, chromium oxide, which enable the fibers to be dyed in bulk and to have more neutral tones.

Abstract: A process and glass batch composition are provided for producing a soda-lime-silica glass containing oxides of iron. The process includes admixing, heating and melting a soda-lime-silica float glass batch mixture comprising sand, soda ash, dolomite, limestone, and a sulfate selected from the group consisting of salt cake and gypsum. In addition, wuestite is included in the batch as at least a partial source of the iron oxides in the resulting glass.

Abstract: A glass composition for a substrate consisting essentially of from 56 to 72 wt % of SiO.sub.2, from 1 to less than 14 wt % of Al.sub.2 O.sub.3, from 0 to 9 wt % of MgO, from 0.5 to 11 wt % of CaO, from 0 to 4 wt % of SrO, from 0 to 3 wt % of BaO, from 6 to less than 14 wt % of MgO+CaO+SrO+BaO, from 0 to 9 wt % of Na.sub.2 O, from 6 to 20 wt % of K.sub.2 O, and from 6 to 20 wt % of Na.sub.2 O+K.sub.2 O.

Abstract: Ultraviolet ray absorbing colored glass, which comprises 100 parts by weight of a base component consisting of soda lime silicate glass and coloring components consisting essentially of from 0.08 to 0.4 part by weight of total iron as calculated as Fe.sub.2 O.sub.3, from 0.05 to 0.4 part by weight of vanadium as calculated as V.sub.2 O.sub.5, from 0.0005 to 0.03 part by weight of Se, from 0 to 0.005 part by weight of CoO, from 0 to 2.0 parts by weight of TiO.sub.2 and from 0 to 0.8 part by weight of CeO.sub.2.

Abstract: A dark gray colored glass comprising 100 parts by weight of a soda lime silicate glass as a matrix component and coloring components consisting essentially of from 0.8 to 1.5 parts by weight of total iron calculated as Fe.sub.2 O.sub.3, from 0.1 to 0.3 part by weight of FeO, from 0 to 1.0 part by weight of TiO.sub.2, from 0.0005 to 0.015 part by weight of Se, from 0.02 to 0.05 part by weight of CoO and from 0.002 to 0.05 part by weight of Cr.sub.2 O.sub.3.

Abstract: A conductive glass lining composition includes 100 parts by weight of a frit and 0.05 to 1.5 parts by weight of a metal fibers of 0.1 to 30 .mu.m in diameter, 1.5 to 10 mm in length and a length-to-diameter ratio of not less than 50.

Abstract: Glass having low solar radiation and ultraviolet ray transmittance, which consists essentially of a soda lime-silica type matrix glass containing from 0.53 to 0.70 wt % of total iron calculated as Fe.sub.2 O.sub.3, from 0.2 to 0.4 wt % of TiO.sub.2 and from 0.5 to 0.8 wt % of total cerium calculated as CeO.sub.2, wherein the weight of FeO calculated as Fe.sub.2 O.sub.3 is from 30 to 40% of the weight of the total iron calculated as Fe.sub.2 O.sub.3.

Abstract: A glass substrate for plasma display panel, which has a spectral transmittance of at least 87% in the range of from 400 nm to 700 nm at a thickness in the range of from 1.5 to 3.5 mm.

Abstract: A method of preparing a ferrous iron-containing glass composition is provided. The method comprises melting a batch of glass-forming components including an iron source and refining the resultant melt. The iron source comprises a fayalite-containing material. Glass can be produced having an increased ferrous content and an associated higher level of solar heat absorption with improved visible light transmission as a result of lower iron (III) content.

Abstract: Soda lime glass including glass-forming constituents for soda lime glass; and coloring agents including iron, cobalt and selenium present in a form and in an amount as percent by weight of the soda lime glass as follows:from 1.00 to 1.65% of Fe.sub.2 O.sub.3 ;from 0.017 to 0.030% of Co; andfrom 0.001 to 0.010% of Se.The soda lime glass has a very dark grey color, a total luminous transmission measured for Illuminant A for a glass thickness of 4 mm (TLA4) of less than 20%, and a total energy transmission measured for a glass thickness of 4 mm (TE4) of less than 20%. This glass is particularly suitable for vehicle roof panels.

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 Fe.sub.2 O.sub.3,from 0.0040 to 0.0180% of Co,from 0.0003 to 0.0040% of Se, andfrom 0.0010 to 0.0100% of Cr.sub.2 O.sub.3.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.

Abstract: The invention is a soda-lime-silica glass composition which is blue in color and having improved UV and IR absorption. The spectral properties of the blue glass at a 4.0 mm. Thickness include: 477-494 dominant wavelength and 6-40% purity of excitation. The blue glass composition, by weight, comprises a base glass composition of: 68 to 75% SiO.sub.2, 10 to 18% Na.sub.2 O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al.sub.2 O.sub.3, and 0 to 5% K.sub.2 O, where CaO+MgO is 6 to 15% and Na.sub.2 O+K.sub.2 0 is 10 to 20%; and colorants consisting essentially of: 0.4 to 2.0% total iron oxide as Fe.sub.2 O.sub.3, 0.15 to 2.00% manganese oxide as MnO.sub.2 ; 0.005 to 0.025% cobalt oxide as Co, and 0 to 1.00% titanium oxide as TiO.sub.2. The glass is useful for automotive or architectural applications. It preferably is made by a nitrite-free method which may desirably involve the use of a reducing agent during melting operations.

Abstract: A silica-soda-lime glass composition suitable for making glazing. Said glass consists of 69-75 wt % SiO.sub.2, 0-3 wt % Al.sub.2 O.sub.3, 0-5 wt % B.sub.2 O.sub.3, 2-10 wt % CaO, 0-2 wt % MgO, 9-17 wt % Na.sub.2 O, 0-8 wt % K.sub.2 O, 0.2-4 wt % Fe.sub.2 O.sub.3 (total iron), and 0-0.45 wt % Se, CoO, Cr.sub.2 O.sub.3, NiO, CuO. The amount of tinting agents other than iron is at least 0.0002 wt % when the Fe.sub.2 O.sub.3 content is 1.5 wt % or less. The composition may also contain fluorine; zinc, zirconium, cerium and titanium oxides; and less than 4 wt % barium oxide; while the sum of the percentages of alkaline earth oxides is not above 10 wt %.

Abstract: The present invention provides a green colored glass using a standard soda-lime-silica glass base composition and additionally iron, cerium, chromium and, optionally, titanium as infrared and ultraviolet radiation absorbing materials and colorants. It is preferred that the glass have a green color characterized by a dominant wavelength in the range of about 500 to 565 nanometers with an excitation purity of no higher than about 5% and include about 0.50 to 1.0 wt. % total iron, about 0.26 to 0.65 wt. % Fe.sub.2 O.sub.3, about 0.05 to 3 wt. % CeO.sub.2, 0 to about 2 wt. % TiO.sub.2, and about 20 to 650 PPM Cr.sub.2 O.sub.3. The redox ratio for the glass is maintained between about 0.20 to 0.55.

Abstract: The invention is nitrate-free method to manufacture a blue soda-lime-silica glass composition and improving the ultraviolet light absorption thereof while maintaining a high visible light transmission. The method comprises the steps of: adding colorants, during molten glass formation, consisting essentially of a manganese compound along with a cobalt compound, iron oxide and optionally titanium oxide to a soda-lime-silica base glass composition, and adding no sodium nitrate into the batch during molten glass formation, the materials are adding in quantities sufficient to form said blue glass composition having at a 4.0 mm. thickness: 477-494 dominant wavelength and 6-40% purity of excitation. The blue glass composition, by weight, comprises a base glass composition of: 68 to 75% SiO.sub.2, 10 to 18% Na.sub.2 O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al.sub.2 O.sub.3, and 0 to 5% K.sub.2 O, where CaO+MgO is 6 to 15% and Na.sub.2 O+K.sub.2 O is 10 to 20%; and colorants consisting essentially of: 0.4 to 2.

Abstract: A window glass comprising at least one sheet of glass coated with an electroconductive ITO layer, pyrolyzed from powdered components, combined with a flexible plastic material of the PVB, PU, PVC type, with an index approaching more the index of the ITO layer than the index of air, with which the said layer is coated, and a sheet of glass dyed in the mass, with the same color as the ITO layer, and with properties of reduced energy transmission also entering advantageously into the composition of the window glass is provided. The invention particularly applies to the production of heated windshields for automobiles.

Abstract: A moderate visible light transmitting soda-lime-silica glass of a blue green tint having, at a nominal 4 mm thickness, a visible light transmittance of about 10% to about 70%, and a direct solar heat transmittance of at least 5% less than the visible light transmittance. The soda-lime-silica glass composition includes the essential ingredients of about 1 to about 3 weight percent Fe.sub.2 O.sub.3, about 0.1 to about 1 weight percent TiO.sub.2, and about 0 to 500 ppm Co.sub.3 O.sub.4 with a ferrous iron to total iron content of about 10% to about 37% by weight.

Abstract: Ultraviolet- and infrared-absorbing glass comprising: as basic glass components, 65 to 80% by weight of SiO.sub.2, 0 to 5% by weight of Al.sub.2 O.sub.3, 0 to 10% by weight of MgO, 5 to 15% by weight of CaO, 10 to 18% by weight of Na.sub.2 O, 0 to 5% by weight of K.sub.2 O, 5 to 15% by weight in total of MgO and CaO, 10 to 20% by weight in total of Na.sub.2 O and K.sub.2 O, and 0 to 5% by weight of B.sub.2 O.sub.3 ; and in the first embodiment, as coloring components, 0.25 to 0.45% by weight, in terms of Fe.sub.2 O.sub.3, of total iron oxide (T-Fe.sub.2 O.sub.3) having an FeO/T-Fe.sub.2 O.sub.3 ratio, in terms of Fe.sub.2 O.sub.3, of 15.5 to 25.0%, 0.8 to 2.0% by weight of CeO.sub.2, 0 to 1.0% by weight of TiO.sub.2, 0 to 0.005% by weight of CoO, and 0.0005 to 0.005% by weight of Se; or in the second embodiment, as coloring components, 0.25 to 0.5% by weight, in terms of Fe.sub.2 O.sub.3, of total iron oxide (T-Fe.sub.2 O.sub.3) having an FeO/T-Fe.sub.2 O.sub.3 ratio, in terms of Fe.sub.2 O.sub.3, of 5.

Abstract: The invention is a green soda-lime-silica glass composition having excellent ultra violet absorbing ability while having a relatively high light transmittance. The colorants of the glass composition consist essentially of: greater than 0.5 to 1.5 wt. % total iron oxide as Fe.sub.2 O.sub.3 ; wherein the weight ratio of Fe.sup.+2 /Fe.sup.+3 is less than 0.35; 0.10 to 2.00 wt. % manganese compound as MnO.sub.2 ; and optionally any of: up to 1.00 wt. % titanium oxide as TiO.sub.2, up to 1.00 wt. % cerium oxide as CeO.sub.2 ; up to 1.00 wt. % vanadium oxide as V.sub.2 O.sub.5 ; and up to 0.20 wt. % chromium oxide as Cr.sub.2 O.sub.3 ; the glass composition having, at 4.0 mm. thickness: 55 to 80% light transmittance using Illuminant A with less than 46% ultra violet transmittance measured over the range of 300 to 400 nanometers.

Abstract: Ultraviolet ray absorbing colored glass, which comprises 100 parts by weight of soda lime silicate glass as a base component and coloring components consisting essentially of from 0.12 to 0.7 part by weight of total iron as calculated as Fe.sub.2 O.sub.3, from 0.2 to 2.0 parts by weight of total cerium as calculated as CeO.sub.2, from 1.0 to 2.5 parts by weight of total titanium as calculated as TiO.sub.2, from 0 to 0.01 part by weight of CoO and from 0.0001 to 0.02 part by weight of Se, and which has an ultraviolet ray transmittance of at most 10%, as stipulated in ISO-9050 and as calculated as of a thickness of 5 mm, whereby the dominant wavelength measured by illuminant C is within a range of from 565 to 600 nm.

Abstract: Grey soda-lime glass is composed of main glass-forming constituents together with iron, selenium, cobalt and chromium as colouring agents in the following quantities:______________________________________ Fe.sub.2 O.sub.3 0.5 to 0.9% Co 0.012 to 0.025% Se 0.0025 to 0.010% Cr.sub.2 O.sub.3 0.005 to 0.020%. ______________________________________The proportions of colouring agents are such that the glass has a light transmission factor (TL) of less than 30% and an excitation purity (P) of less than 12%. The dark grey glass is especially appropriate for installation in the sunroofs of cars.

Abstract: A deep gray colored glass comprising 100 parts by weight of matrix components and coloring components consisting essentially of: from 0.8 to 1.4 parts by weight of total iron calculated as Fe.sub.2 O.sub.3, at most 0.21 part by weight of FeO, from 0.05 to 1.0 part by weight of TiO.sub.2, from 0.0005 to 0.015 part by weight of Se and from 0.02 to 0.05 part by weight of CoO, wherein the matrix components comprise from 65 to 75 wt % of SiO.sub.2, from 0.1 to 5.0 wt % of Al.sub.2 O.sub.3, from 10 to 18 wt % of Na.sub.2 O+K.sub.2 O, from 5 to 15 wt % of CaO, from 1 to 6 wt % of MgO and from 0.05 to 1.0 wt % of SO.sub.3.

Abstract: The invention is a method of preventing the formation of nickel sulfide stones in soda-lime-silica glass. Nickel compounds are often added as colorants or enter the glass batch as an impurity from raw materials. It involves mixing batch raw materials together, melting and refining them to form a molten glass, the improvement comprising the step of reducing the formation of nickel sulfide stones by adding to the batch materials 0.01-2.0 wt. % of an oxygen containing manganese compound calculated as manganese dioxide. The manganese compound may be a manganese oxide or salts of permanganic acid such as sodium or potassium permanganate.

Abstract: Glass compositions containing, expressed in percentages by weight, from 0.75 to 1.4% total iron expressed in the form Fe.sub.2 O.sub.3, from 0.25 to 0.32% ferrous iron in the form of FeO and which has, and at a thickness of between approximately 3 and 3.3 millimeters, exibit a total light transmission factor under illuminent A (TL.sub.A) of at least 70%, a total energy transmission factor (T.sub.E) less than approximately 46% and a transmission factor for ultraviolet radiation (T.sub.UV) less than approximately 25%, and are suitable for the production of windows or panes for use in the architectural field or in automobile and industrial vehicles.

Abstract: In order to provide an enamel frit composition for a low-expansion crystallized glass, capable of producing an enamel coating excellent in abrasion resistance and acid resistance without occurrence of cracks by using glass powder which does not contain any harmful component such as PbO, and to provide an enamel-coated low-expansion crystallized glass plate using the enamel frit composition, the enamel frit composition for a low-expansion crystallized glass essentially consists 40-98 wt % glass powder, 1-55 wt % coloring pigment, and 0-54 wt % filler. The glass powder consists, by weight, of 55-72% SiO.sub.2, 4-8% Al.sub.2 O.sub.3, 14-22% B.sub.2 O.sub.3, 2-4% BaO, 5.1-15% Na.sub.2 O, 0-2% Li.sub.2 O, 0-2.8% K.sub.2 O, and 0-2% F.sub.2.

Abstract: The present invention provides a blue colored glass using a standard soda-lime-silica glass base composition and additionally iron and cobalt as solar radiation absorbing materials and colorants. In particular, the blue colored glass includes about 0.53 to 1.1 wt. % total iron, preferably about 0.6 to 0.85 wt. % and about 5 to 40 PPM CoO, preferably about 15 to 30 PPM and a luminous transmittance of at least 55%. If desired, the composition may include up to about 100 PPM Cr.sub.2 O.sub.3. The redox ratio for the glass of the present invention is maintained between about 0.25 to 0.35, preferably between about 0.28 to 0.33. The glass color is characterized by a dominant wavelength (DW) of about 485 to 491 nanometers and an excitation purity (Pe) of about 3 to 18 percent. In one particular embodiment of the invention, the color of the glass is characterized by a dominant wavelength in the range of about 487 to 489 nanometers and an excitation purity of about 3 to 8 percent at a thickness of about 0.084 to 0.

Abstract: A transparent glass exhibiting a light pink color, the glass, as analyzed, consisting essentially of 12-34 ppm selenium in conjunction with a co-colorant selected from a group consisting of 1.5-7 ppm cobalt oxide calculated as Co.sub.3 O.sub.4 and 500-700 ppm neodymium oxide in a soda lime silicate base glass that contains as impurities no more than about 700 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.

Abstract: A transparent glass exhibiting a blue color, the glass, as analyzed, consisting essentially of 100-250 ppm copper oxide in conjunction with a co-colorant of 5-15 ppm cobalt oxide, calculated as Co.sub.3 O.sub.4, in a soda lime silicate base glass that contains as impurities no more than 500 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.

Abstract: A transparent glass exhibiting a light green color, the glass, as analyzed, consisting essentially of 40-200 ppm chromium oxide in a soda lime silicate base glass that contains as impurities no more than about 400 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.

Abstract: The invention relates to a bronze-tinted or grey-tinted soda lime silicate glass, in particular for the manufacture of flat glass by the casting process or by the float process, with a basic composition for the soda lime silicate glass of:______________________________________ SiO.sub.2 : 66-74 weight % Al.sub.2 O.sub.3 : 0-3 weight % TiO.sub.2 : 0-0.15 weight % CaO: 7-12 weight % MgO: 2-6 weight % Na.sub.2 O: 10-15 weight % K.sub.2 O: 0-3 weight % BaO: 0-0.04 weight % SO.sub.3 : 0.1-0.4 weight % ______________________________________The invention resides in the fact that it contains the following colorants additives: ______________________________________ Fe.sub.2 O.sub.3 : 0-0.45 weight % V.sub.2 O.sub.5 : 0.0-0.5 weight % MnO.sub.2 : 0.5-2 weight % NiO: 0.0-0.05 weight % CuO: 0.0-0.1 weight % CoO: 0.0-0.008 weight % ______________________________________the sum of the weight percentages of the constituents forming the soda lime silicate glass being 100.

Abstract: A composition for soda-lime-silica glass intended for the production of panes, which comprises, in percentages by weight:______________________________________ SiO.sub.2 69 to 75% Al.sub.2 O.sub.3 0 to 3% B.sub.2 O.sub.3 0.5% CaO 2 to 10% MgO < to 2% Na.sub.2 O 9 to 17% K.sub.2 O 0 to 8% Se 0 to 0.002% CoO 0 to 0.001% Cr.sub.2 O.sub.3 0 to 0.001% with 0.02% < Fe.sub.2 O.sub.3 (total) < 0.2%. ______________________________________This composition may further comprise fluorine, oxides of zinc and zirconium and less than 4% of barium oxide, the total of the percentages of the alkaline earth oxides remaining equal to or less than 10%. The panes made from such glasses are particularly well adapted for architectural applications.

Abstract: A neutral, generally green-gray low transmittance (no more than 50 percent luminous transmittance) soda-lime-silica glass has reduced solar energy transmittance and reduced ultra violet radiation transmittance when provided with the following colorant constituents in percent by weight:______________________________________ Fe.sub.2 O.sub.3 (total iron) 1.3-2 NiO 0.01-0.05 CoO 0.02-0.04 Se 0.0002-0.003 TiO.sub.2 0.09-3 ______________________________________The glass has a ferrous value in the range of 18 to 30.

Abstract: A novel type of leadless, black glass for use in an envelope (3) of a black light blue lamp (1) which includes CoO in an amount of 0.45 to 1.0 wt % and NiO in an amount of 2.8 to 3.4 wt %. The glass does not comprise PbO and B.sub.2 O.sub.3. The glass can be exchanged with the existing lead-containing glasses for such envelopes (3). A burning lamp (1) having such an envelope (3) emits light of the same intensity and colour as the existing lamp and emits predominantly UV-A radiation.

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 (T.sub.E) less than the light transmission factor under illuminant A (TL.sub.A), the factor T.sub.E being from 10 to 48% and the factor TL.sub.A 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 Fe.sub.2 O.sub.3 (total iron), from 0.001 to 0.02% of CoO, from 0 to 0.0025% of Se and from 0 to 0.1% of Cr.sub.2 O.sub.3.

Abstract: The present invention provides a glass composition having a bronze color and a luminous (visible) transmittance of 70% or greater. The base glass is a soda-lime-silica composition and iron and selenium are added as colorants. In one particular embodiment of the invention, a bronze colored glass with a luminous transmittance (C.I.E. illuminant A) of 70% and higher at a thickness of 4.1 millimeters may be attained by using as colorants: 0.4 to 0.6 wt. % Fe.sub.2 O.sub.3, 0.09 to 0.17 wt. % FeO and 3 to 11 PPM Se. In addition, it is preferred that the total solar energy transmittance be no greater than 60%.