Abstract: An insulating unit having a neutral grey color and a solar heat gain coefficient less than 0.40 includes a clear glass sheet spaced from a coated glass sheet. The coated glass sheet includes a colored glass substrate having a solar infrared reflective coating. The composition of the coated substrate includes a base glass portion and a glass colorant portion, the glass colorant portion including total iron in the range of 0.04 to less than 0.28 weight percent; CoO in the range of 32 to 90 parts per million, and Se in the range of greater than 0 to less than 5.5 parts per million. In one non-limiting embodiment of the invention the glass substrate at a thickness of 0.223 inches has a* chromaticity coordinates of ?3.5 to +2.5 and b* chromaticity coordinates of ?1 to ?15, and a visible light transmittance of 40 to 80%.

Abstract: A ceramic composition is prepared to contain a B2O3—SiO2—Al2O3-MO based glass composition (M: Ca, Mg, Sr and/or Ba, B2O3: 4 to 17.5 weight %, SiO2: 28 to 50 weight %, Al2O3: 0 to 20 weight %, and MO: 36 to 50 weight %): 24 to 40 weight %, SrTiO3 and/or CaTiO3: 46 to 75.4 weight %, CuO: 0.1 to 5.0 weight %, CaO: 0.5 to 7.0 weight %, and MnO, ZnO and/or CoO: 10 weight % or more (however, including 0% by weight). The ceramic composition is subjected to firing to produce a ceramic sintered body, and obtain a composite LC component including the ceramic sintered body. While suppressing the shrinkage behavior during firing, dielectric properties can be improved dramatically as compared with conventional cases, and moreover reliability can be ensured.

Abstract: A glass composition is provided for the production of high temperature glass fibers with oxides comprising 1% to 15% Fe2O3+FeO as a fluidizer to lower liquidus temperature and the fiberizing temperature of a mix of high temperature oxides. The glass composition has therein an appropriate content of high temperature oxides to produce glass fiber with high temperature limits and high burn-through properties.

Abstract: The present invention relates to a glass plate for a substrate contains, as a glass matrix composition, in mol % on the oxide basis, SiO2: 67 to 72, Al2O3: 1 to 7, B2O3: 0 to 4, MgO: 11 to 15, CaO: 0 to 3, SrO: 0 to 3, BaO: 0 to 4, ZrO2: 0 to 4, Na2O: 8 to 15, and K2O: 0 to 7, with SiO2+Al2O3: 71 to 77, MgO+CaO+SrO+BaO: 11 to 17, Na2O+K2O: 8 to 17, and satisfying K2O/(Na2O+K2O)?0.13×(SiO2+Al2O3+0.5B2O3+0.3BaO)?9.4, in which the glass plate has a ?-OH value (mm?1) of 0.05 to 0.5, and a heat shrinkage ratio (C) of 16 ppm or less.

Abstract: A vehicle roof window includes an uncoated glass transparency having an Lta in the range of greater than 0% to 10%, and a solar factor in the range of equal to or less than 30%, measured at a thickness in the range of 3.6-4.1 millimeters (‘mm”), e.g. at a thickness of 3.6 mm, 3.9 mm or 4.1 mm. The solar factor is determined in accordance to International Organization for Standardization (“ISO”) No. 13837.

Abstract: Provided are a glass sheet for a CIGS solar cell which satisfies both of high power generation efficiency and high glass transition temperature, and a CIGS solar cell having high power generation efficiency. A glass sheet for a Cu—In—Ga—Se solar cell containing, in terms of mol % on the basis of the following oxides, 60 to 75% of SiO2, 3 to 10% of Al2O3, 0 to 3% of B2O3, 5 to 18% of MgO, 0 to 5% of CaO, 4 to 18.5% of Na2O, 0 to 17% of K2O, and 0% or more and less than 10% of SrO+BaO+ZrO2, wherein K2O/(Na2O+K2O) is 0 to 0.5, and the glass sheet has a glass transition temperature (Tg) of more than 550° C.

Abstract: To provide a heat-absorbing glass plate which comprises soda lime silica glass containing coloring components, the coloring components containing, as represented by mass % based on the following oxides, from 0.45 to 0.61% of total iron as calculated as Fe2O3 and from 0.2 to 0.6% of TiO2, which contains substantially no CoO, Cr2O3, V2O5, MnO nor CeO2, which has a mass proportion of bivalent iron as calculated as Fe2O3 in total iron as calculated as Fe2O3 of from 45 to 60%, which has a solar transmittance of at most 42% calculated as 4 mm thickness, which has a visible light transmittance (by illuminant A) of at least 70% calculated as 4 mm thickness, and which provides a transmitted light having a dominant wavelength of from 492 to 500 nm.

Abstract: Provided is a tempered glass having a compression stress layer in a surface thereof, comprising, as a glass composition in terms of mol %, 50 to 75% of SiO2, 3 to 13% of Al2O3, 0 to 1.5% of B2O3, 0 to 4% of Li2O, 7 to 20% of Na2O, 0.5 to 10% of K2O, 0.5 to 13% of MgO, 0 to 6% of CaO, and 0 to 4.5% of SrO, and being substantially free of As2O3, Sb2O3, PbO, and F.

Abstract: A glass that is ion exchangeable to a depth of at least 20 ?m (microns) and has a internal region having a tension of less than or equal to 100 MPa. The glass is quenched or fast cooled from a first temperature above the anneal point of the glass to a second temperature that is below the strain point of the glass. In one embodiment, the glass is a silicate glass, such as an alkali silicate glass, an alkali aluminosilicate glass, an aluminosilicate glass, a borosilicate glass, an alkali aluminogermanate glass, an alkali germanate glass, an alkali gallogermanate glass, and combinations thereof.

Abstract: Provided are a glass substrate for information recording media wherein air bubbles can be sufficiently removed, and an information recording medium using the glass substrate. The glass substrate contains 65 to 90 mass % of SiO2+Al2O3+B2O3 (where SiO2 is 45 to 75 mass %, Al2O3 is 1 to 20 mass %, and B2O3 is 0 to 8 mass %), 7 to 20 mass % of R2O (where R represents Li, Na, or K), 0.1 to 12 mass % of R?O (where R? represents Mg, Ca, Sr, Ba, or Zn), and 0.5 to 10 mass % of TiO2+ZrO2. Moreover, the glass substrate contains at least one multivalent element selected from among a group consisting of V, Mn, Ni, Mo, Sn, Ce, and Bi; the molar ratio of the total amount of the oxide of the multivalent element to the total amount of TiO2+ZrO2 is within the range of 0.05 to 0.50.

Abstract: Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 ?m?1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of ?5° C. or lower, of 7 ?m?1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R?2O in which R? is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R?2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

Abstract: The invention provides an alkali-free glass substrate small in the variation of the thermal shrinkage and a process for producing the same. An alkali-free glass substrate of the invention has an absolute value of a thermal shrinkage of 50 ppm or more when the alkali-free glass substrate is heated at a rate of 10° C./min from a room temperature, kept at a holding temperature of 450° C. for 10 hr and then cooled at a rate of 10° C./min.

Abstract: Embodiments of the present invention provides fiberizable glass compositions formed from batch compositions comprising amounts of one or more glassy minerals, including perlite and/or pumice.

Abstract: Glass compositions and high-modulus, and high-strength glass fibers made therefrom, being capable of economical, continuous processing and suitable for the production of high-strength and/or high stiffness, low-weight composites, such as windturbine blades, the glass composition comprises the following constituents in the limits defined below, expressed as weight percentages: between about 56 to about 61 weight percent SiO2; between about 16 to about 23 weight percent Al2O3, wherein the weight percent ratio of SiO2/Al2O3 is between about 2 to about 4; between about 8 to about 12 weight percent MgO; between about 6 to about 10 weight percent CaO, wherein the weight percent ratio of MgO/CaO is between about 0.7 to about 1.5; between about 0 to about 2 weight percent Na2O; less than about 1 weight percent Li2O; and total residual transition metal oxides of less than about 2 weight percent.

Abstract: The invention relates to a glass ceramic comprising article, wherein the integral, non-post-processed and non-reworked glass ceramic comprising article comprises at least three different types of microstructures. The microstructures differ in the number and/or size of the crystallites contained per unit volume, and/or in the composition of the crystallites, and/or in the composition of the residual glass phases. The different microstructures are characterized by different relative ion content profiles across a cross-section perpendicular to the transition areas. The relative ion content profiles are determined from intensities which are determined using secondary ion mass spectrometry, and each of the three different types of microstructures preferably has different intensity plateaus for individual ions, wherein the individual ions are components of the main crystal phases.

Abstract: The present invention provides an alkali-free glass having a high strain point, a low viscosity and low devitrification, which is easily subjected to float molding and fusion molding. The glass herein has a strain point of 725° C. or higher, an average thermal expansion coefficient at 50 to 300° C. of 30×10?7 to 40×10?7/° C., a temperature T2 at which a glass viscosity becomes 102 dPa·s of 1,710° C. or lower, a temperature T4 at which a glass viscosity becomes 104 dPa·s of 1,330° C. or lower, a glass surface devitrification temperature (Tc) of 1,330° C. or lower, and a glass internal devitrification temperature (Td) of 1,330° C. or lower.

Abstract: The glass substrate of the present invention includes, in terms of mass %: 58.5-69.5% SiO2, 2.5-9.9% Al2O3, 0-2.5% Li2O, 0%?Na2O<6%, 0%?K2O<6%, 0%<MgO?5.2%, 3%<CaO?13%, 10-27% SrO, 0%?BaO<5%, 0-3% TiO2, and 0-9.8% ZrO2. SiO2+Al2O3?73%, Li2O+Na2O+K2O<6%, 3%<MgO+CaO?16%, SrO+BaO 10-27%, MgO+CaO+SrO+BaO 21-33%, and MgO/CaO 0.2-1.0 in molar fraction. The glass substrate is substantially free from B2O3. Glass transition point >555° C., liquidus temperature ?1200° C., and average thermal expansion coefficient ?75×10?7/° C. The present invention can provide a glass substrate having a thermal expansion coefficient close to those of a semi conductor film, etc. and a high strain point, and suitable for continuous production by a float process.

Abstract: A compositional range of high strain point alkali metal free, silicate, aluminosilicate and boroaluminosilicate glasses are described herein. The glasses can be used as substrates for photovoltaic devices, for example, thin film photovoltaic devices such as CIGS photovoltaic devices. These glasses can be characterized as having strain points ?570° C., thermal expansion coefficient of from 5 to 9 ppm/° C.

Abstract: The invention relates to glass articles suitable for use as electronic device housing/enclosure or protective cover which comprise a glass material. Particularly, a housing/enclosure/cover comprising an ion-exchanged glass exhibiting the following attributes (1) radio, and microwave frequency transparency, as defined by a loss tangent of less than 0.03 and at a frequency range of between 15 MHz to 3.0 GHz; (2) infrared transparency; (3) a fracture toughness of greater than 0.6 MPa·m1/2; (4) a 4-point bend strength of greater than 350 MPa; (5) a Vickers hardness of at least 450 kgf/mm2 and a Vickers median/radial crack initiation threshold of at least 5 kgf, (6) a Young's Modulus ranging between about 50 to 100 GPa; (7) a thermal conductivity of less than 2.0 W/m° C., and (9) and at least one of the following attributes: (i) a compressive surface layer having a depth of layer (DOL) greater and a compressive stress greater than 400 MPa, or, (ii) a central tension of more than 20 MPa.

Abstract: The invention relates to a glass composition of silica-soda-lime type colored blue which comprises the coloring agents below in a content varying within the following limits, by weight: Fe2O3 (total iron) 0.2 to 0.51% CoO 10 to 50 ppm Cr2O3 10 to 300 ppm CuO 0-400 ppm the glass exhibiting a redox factor of less than 0.35, a dominant wavelength ?D of between 485 and 489 nm, an excitation purity of less than 13% and a selectivity at least equal to 1.1 under a thickness of between 3 and 5 mm. It also relates to the glass sheet obtained from the abovementioned composition, said sheet being intended in particular to form an automobile window or for the construction industry.

Abstract: The glass-metal bond for a tube collector includes a glass tube and metal part bonded to the glass tube. In order to match the thermal expansion properties, the glass tube has the following composition: SiO2, 73-77 wt. %; B2O3, 6-<8 wt. %; Al2O3, 6-6.5 wt. %; Na2O, 5.5-7 wt. %; K2O, 1-3 wt. %; CaO, 0.5-3.2 wt. %; MgO, 0-2 wt. %; Fe2O3, 50-150 ppm; and TiO2 0-<100 ppm. The ratio of the sum of the alkaline-earth metal oxides (in mol %) to the sum of the alkali metal oxides (in mol %) is ?0.6. The metal part is preferably made of metal material no. 1.3981 according to DIN 17745. The glass composition itself is also part of the invention.

Abstract: Zirconium-containing BaO- and PbO-free X-ray opaque glasses having a refractive index nd of about 1.480 to about 1.517 and a high X-ray opacity with an aluminum equivalent thickness of at least about 180% are provided. Such glasses are based on a SiO2—B2O3—Cs2O—K2O—La2O3 system with additions of Al2O3, Li2O, Na2O and/or ZrO2. Such glasses may be used, in particular, as dental glasses or as optical glasses.

Abstract: To provide a glass containing little B2O3, whereby when its powder is fired, its thermal expansion curve does not have an inflection point, a non-lead glass is provided containing, as represented by mol % based on the following oxides, from 35 to 41.5% of SiO2, from 8 to 25% of MgO, more than 27 to 35% of CaO, from 0 to 2% of SrO, from 0 to 4% of BaO, from 5 to 15% of ZnO and from 4.5 to 10% of Al2O3, wherein the total content of these components is at least 97%, and when SrO and BaO are contained, the total content of SrO and BaO is at most 2%; as well as a non-lead glass containing, as represented by mol % based on the following oxides, from 39.5 to 41.5% of SiO2, from 10 to less than 13% of MgO, from 18 to 22% of CaO, more than 12 to 15% of SrO, from 0 to 1% of BaO, from 6 to 11% of ZnO and from 4.5 to 7% of Al2O3, wherein the total content of these components is at least 97%.

Abstract: The invention relates to a glass strand, the chemical composition of which is substantially free of boron oxide and comprises the following constituents, in the limits defined below expressed as percentages by weight: SiO2 55 to 65 Al2O3 ?9 to 16 CaO 15 to 26 MgO 1 to 5 BaO + SrO 0.5 to 5?? Na2O + K2O + Li2 O 0 to 2 TiO2 0 to 1 ZnO 0 to 2 ZrO2 0 to 2. It also relates to composites comprising such strands.

Abstract: An aspect of the present invention relates to a glass substrate for a magnetic recording medium, which is comprised of glass comprising, denoted as molar percentages, 56 to 75 percent of SiO2, 1 to 11 percent of Al2O3, more than 0 percent but equal to or less than 4 percent of Li2O, equal to or more than 1 percent but less than 15 percent of Na2O, equal to or more than 0 percent but less than 3 percent of K2O, and substantially no BaO, with a total content of Li2O, Na2O, and K2O falling within a range of 6 to 15 percent, with a molar ratio (Li2O/Na2O) being less than 0.50, with a molar ratio {K2O/(Li2O+Na2O+K2O)} being equal to or less than 0.13, with a total content of MgO, CaO, and SrO falling within a range of 10 to 30 percent, with a total content of MgO and CaO falling within a range of 10 to 30 percent, with a molar ratio {(MgO+CaO)/(MgO+CaO+SrO)} being equal to or more than 0.

Abstract: A tempered glass substrate of the present invention is a tempered glass substrate, which has a compression stress layer on a surface thereof, and has a glass composition comprising, in terms of mass %, 40 to 71% of SiO2, 3 to 21% of Al2O3, 0 to 3.5% of Li2O, 7 to 20% of Na2O, and 0 to 15% of K2O.

Abstract: The subject of the invention is a method of refining glass for which the temperature (T log 2) corresponding to a viscosity of 100 poise (10 Pa·s) is greater than or equal to 1480° C., characterized in that sulfides are used as a refining agent. It also relates to the glass article capable of being obtained by this method.

Abstract: Zirconium-containing BaO- and PbO-free X-ray opaque glasses having a refractive index nd of about 1.54 to about 1.58 and a high X-ray opacity with an aluminum equivalent thickness of at least about 500% are provided. Such glasses are based on a SiO2—B2O3—Al2O3—R2O—RO—La2O3—ZrO2 system with optional additions of SnO2. Such glasses may be used, in particular, as dental glasses or as optical glasses.

Abstract: A glass for an information recording medium substrate, which comprises, as represented by mol % based on the following oxides, from 61 to 72% of SiO2, from 3 to 11% of Al2O3, from 0 to 14.3% of Li2O, from 0 to 22% of Na2O, from 0 to 22% of K2O, from 4 to 13% of MgO, from 0 to 6% of TiO2 and from 0 to 5% of ZrO2, provided that the total content of Li2O, Na2O and K2O (R2O) is from 10 to 22%, and (a) the ratio of the content of Li2O to R2O (Li2O/R2O) is at most 0.52, (b) the ratio of the content of Na2O to R2O (Na2O/R2O) is at least 0.35, or (c) the ratio of the content of K2O to R2O (K2O/R2O) is at least 0.45.

Abstract: To provide glass to be used for a substrate which is, as a substrate, less susceptible to surface roughening even if subjected to cleaning by means of a strongly acidic solution. Glass for a substrate, which comprises, as represented by mol % based on the following oxides, from 62.5 to 69% of SiO2, from 9 to 15.5% of Al2O3, from 8 to 16 of Li2O, from 0 to 8% of Na2O, from 0 to 7% of K2O and from 0 to 3.5% of ZrO2, provided that SiO2—Al2O3 is at least 53.3%, Li2O+Na2O+K2O is from 17 to 24%, and the total of contents of the above six components is at least 97%.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.

Abstract: The invention relates to the field of display screens, especially plasma screens. One subject of the invention is a glass composition which comprises the constituents below in the following weight proportions: SiO2 ?55-75%; Al2O3 ??1-5%; ZrO2 ??1-5%; Na2O ??1-5.5%; K2O ??1-9%, preferably 1-8.5%, and advantageously ??1-7.5%; CaO ??7-11%; and SrO ??3-9%, preferably 3.5-9%, and advantageously 4.5-9%, said composition having an Al2O3/ZrO2 weight ratio varying from 0.7 to 1.8, preferably from 0.7 to 1.2. The substrates obtained have a strain point at least equal to 570° C. and a coefficient of thermal expansion ?20-300 between 70 and 90×10?7/° C.

Abstract: The disclosed cover glass is produced by etching a glass substrate that has been formed by a down-drawing process, and chemically strengthening the glass substrate to provide the glass substrate with a compressive-stress layer on the principal surfaces thereof. The glass substrate contains, as components thereof, 50% to 70% by mass of SiO2, 5% to 20% by mass of Al2O3, 6% to 30% by mass of Na2O, and 0% to less than 8% by mass of Li2O. The glass substrate may also contain 0% to 2.6% by mass of CaO, if necessary. The glass substrate has an etching characteristic in which the etching rate is at least 3.7 ?m/minute in an etching environment having a temperature of 22° C. and containing hydrogen fluoride with a concentration of 10% by mass.

Abstract: A high transmittance glass includes: SiO2 in the range of 65 to 75 weight percent; Na2O in the range of 10 to 20 weight percent; CaO in the range of 5 to 15 weight percent; MgO in the range of 0 to 5 weight percent; Al2O3 in the range of 0 to 5 weight percent; K2O in the range of 0 to 5 weight percent; MnO2 in the range of 0.035 to 0.6 weight percent; FeO in the range of 0.0010 to 0.0030 weight percent; and Fe2O3 (total iron) in the range of 0.001 to 0.03 weight percent. The glass has a redox ratio in the range of 0.1 to 0.4.

Abstract: A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition contains, in terms of mass %: 40-70% SiO2; 5-20% B2O3; 10.25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0-0.5% Li2O; 0-1.0% Na2O; 0-1.5% K2O; and 0-1.5%, excluding 0%, Cl, Li2O+Na2O+K2O exceeding 0.06%. The glass composition can be produced suitably using, for example, a chloride as part of the raw glass materials.

Abstract: A device including a glass substrate made of a soda lime silica glass composition of: SiO2 (50˜75 wt %); Na2O (1˜8 wt %); K2O (1˜12 wt %); CaO (1˜12 wt %); ZrO2 (0˜8 wt %); SrO (0˜15 wt %); BaO (0˜12 wt %); MgO (0˜10 wt %); Al2O3 (0˜12 wt %); B2O3 (0˜3 wt %), wherein the total amount of Na2O and K2O is in the range of 5˜15 wt %, the total amount of CaO, MgO, SrO and BaO is in the range of 10˜25 wt %.

Abstract: Provided is a cover glass having a down-drawable composition including, in mass percent: 50%-70% SiO2, 5%-20% Al2O3, 6%-20% Na2O, 0%-10% K2O, 0%-10% MgO, above 2%-20% CaO, and 0%-4.8% ZrO2 wherein, (i) 46.5%?(SiO2?½Al2O3)?59%, (ii) 0.3<CaO/RO, where RO represents a total mass percent of one or more compounds selected from the group consisting of MgO, CaO, SrO and BaO included in the glass substrate, (iii) SrO+BaO<10%, (iv) 0?(ZrO2+TiO2)/SiO2)<0.07, and (v) 0?B2O3/R12O<0.1, where R12O represents a total mass percent of one or more compounds selected from the group consisting of Li2O, Na2O and K2O included in the glass substrate.

Abstract: The present invention provides processes to immobilize high alkaline radioactive and/or hazardous waste in a silicate-based glass, the waste containing one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds. The invention also provides silicate-based glass compositions for use in immobilizing radioactive and/or hazardous waste.

Abstract: Mineral materials selected from lithium aluminosilicate glasses containing vanadium, precursors of glass-ceramics, and glass-ceramics colored by vanadium contain solid solution(s) of ?-quartz and/or ?-spodumene as main crystalline phase. Also disclosed are articles made from said mineral materials, as well as methods for forming said glasses, glass-ceramics and articles of said glasses and glass-ceramics. Methods involve optimizing the refining of lithium aluminosilicate glasses containing SnO2 as a fining agent in preparing glasses or glass-ceramics.

Abstract: An integrated dental porcelain system for making dental prostheses and restorations is provided. The system includes three universal major components: a) opaque porcelain composition; b) pressable dentin ingot; and c) veneering porcelain composition that can be used interchangeably for making restorations. Techniques for making the prostheses and restorations include porcelain fused-to-metal (PFM), press-to-metal (PTM), and either pressed and/or machined all-ceramic methods. The system uses both a hand-layering of veneering porcelain (PFM technique) and a hot-pressing process (PTM and all-ceramic technique) to fabricate the prostheses and restorations.

Abstract: The subject of the invention is a glass sheet, the light transmission of which is greater than or equal to 89% for a thickness of 3.2 mm and the chemical composition of which comprises bismuth oxide in a weight content between 0.05 and 1%.

Abstract: According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3 Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2 ((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28.

Abstract: To provide a glass plate for a substrate, which contains no B2O3 and which can be used as a glass plate for an LCD panel. A glass plate for a substrate, which contains substantially no B2O3, which comprises, as a glass matrix composition as represented by mass % based on oxide of SiO2: 68 to 80, Al2O3: 0.1 to 5, MgO: 9.5 to 12, CaO+SrO+BaO: 0 to 2, and Na2O+K2O: 12.5 to 15.5, and which has a density of at most 2.5 g/cm3, an average coefficient of thermal expansion from 50 to 350° C. of from more than 75×10?7/° C. to at most 87×10?7/° C., a glass transition point of at least 560° C. and a brittleness of at most 6.5 ?m?1/2.

Abstract: A process for producing a wipe-proof anti-reflection layer on a borosilicate glass body is described, in which the borosilicate glass body is coated with a coating solution having a composition of 1-6% by weight of HCl, 0.5-7% by weight of SiO2 sol (solids content), 0.5-5% by weight of H2O, and 85-98% by weight of a readily volatile water-soluble organic solvent. The borosilicate glass body that is to be coated contains, in % by weight based on oxide content: 63-76 of SiO2, >11-20 of B2O3, 1-9 of Al2O3, 3-12 of alkali metal oxide(s), 0-10 of alkaline earth metal oxide(s), 0-2 of ZnO, 0-5 of TiO2, 0-1 of ZrO2, 0-1 of Nb2O5, and 0-1 of WO3.

Abstract: Pressable glass-ceramic compositions for dental purposes of the composition I, II or III I II III (percent by weight) (percent by weight) (percent by weight) ZrO2 17-70%? ZrO2/Al2O3 15-70%? Al2O3 15-70%? SiO2 17-59%? SiO2 17-59%? SiO2 17-59%? Al2O3 ?2-15% ZrO2 ?2-15% ZrO2 ?2-15% Y2O3 ??0-6% Y2O3 ??0-6% Y2O3 ??0-6% K2O 3-12.5%? K2O 3-12.5%? K2O 3-12.5%? Na2O 0.2-8.5%?? Na2O 0.2-8.5%?? Na2O 0.2-8.5%?? Li2O 0-1.5% Li2O 0-1.5% Li2O 0-1.5% CaO 0.3-2% CaO 0.3-2% CaO 0.3-2% B2O3 0.1-5% B2O3 0.1-5% B2O3 0.1-5% F 0-2.5% F 0-2.5% F 0-2.5% CeO2 0.2-2% CeO2 0.2-2% CeO2 0.2-2% TiO2 0-1.5% TiO2 0-1.5% TiO2 0-1.5% are particularly suitable for the manufacturing of ceramic veneer frames.

Abstract: Glass for a display device, which comprises, as represented by mole percentage based on the following oxides, from 61 to 72% of SiO2, from 8 to 17% of Al2O3, from 6 to 18% of Li2O, from 2 to 15% of Na2O, from 0 to 8% of K2O, from 0 to 6% of MgO, from 0 to 6% of CaO, from 0 to 4% of TiO2, and from 0 to 2.5% of ZrO2, and having a total content R2O of Li2O, Na2O and K2 O of from 15 to 25%, a ratio Li2O/R2O of the Li2O content to R2O of from 0.35 to 0.8, and a total content of MgO and CaO of from 0 to 9%.

Abstract: A strengthened glass article having a central tension that is below a threshold value above which the glass exhibits frangible behavior. The central tension varies non-linearly with the thickness of the glass. The glass article may be used as cover plates or windows for portable or mobile electronic devices such as cellular phones, music players, information terminal (IT) devices, including laptop computers, and the like.

Abstract: The present invention provides a glass substrate for flat panel display in which yellowing occurring in a case of forming silver electrodes on glass substrate surface is inhibited. A glass substrate for flat panel display, which is formed by a float method, which has a composition consisting essentially of, in terms of oxide amount in mass %: SiO2 50 to 72%, Al2O3 0.15 to 15%, MgO + CaO + SrO + BaO 4 to 30%, Na2O more than 0% and at most 10%, K2O 1 to 21%, Li2O 0 to 1%, Na2O + K2O + Li2O 6 to 25%, ZrO2 0 to 10%, and Fe2O3 0.0725 to 0.15%; and wherein the average Fe2+ content in a surface layer of the glass substrate within a depth of 10 ?m from the a top surface is at most 0.0725% in terms of Fe2O3 amount.

Abstract: A glass composition for lamps includes the following by weight percent: SiO2: 60-75 wt %; CeO2+Ce2O3: 0.01-5.2 wt %; SnO+SnO2: 0.01-5.2 wt %; Al2O3: 0.5-6 wt %; B2O3: 0-5 wt %; Li2O+Na2O+K2O: 13-20 wt %; MgO: 0.5-5 wt %; CaO: 1-10 wt %; SrO: 0-10 wt %; BaO: 0-10 wt %; ZnO: 0-10 wt %; Fe2O3+FeO: 0-0.2 wt %; and TiO2: 0-1 wt %. The glass composition for lamps that contains no lead or antimony achieves high ultraviolet screening capacity, ensuring fewer occurrences of initial coloring and ultraviolet ray caused coloring of glass.

Abstract: An aircraft transparency in a glass piece, wherein the glass piece includes a chemically tempered first major surface and a chemically tempered opposite second major surface, a first case depth begins at the first major surface, a second case depth begins at the second major surface, and a tensile stress zone is within the glass piece between the end points of the first and the second case depths. The glass between the end points of the first and second case depth has a glass composition including: Ingredient Percent by weight SiO2 60 to 75; Al2O3 18 to 28; and Li2O 3 to 9, and the glass has at least one of the following properties (a) a log 10 viscosity temperature of at least 1413° F. and (b) a liquidus temperature of at least 2436° F.