Abstract: A glass composition which contains Ce ions as a component substantially comprises, in terms of oxides, SiO2: 55 to 75 wt %, B2O3: 6 to 25 wt %, CeO2: 0.01 to 5 wt %, SnO: 0.01 to 5 wt %, Al2O3: 0 to 10 wt %, Li2O: 0 to 10 wt %, Na2O: 0 to 10 wt %, K2O: 0 to 10 wt %, MgO: 0 to 5 wt %, CaO: 0 to 10 wt %, SrO: 0 to 10 wt %, BaO 0 to 10 wt %, TiO2: 0 to 1.0 wt %, Fe2O3: 0.01 to 0.2 wt %, Sb2O3: 0 to 5 wt %, ZrO2: 0.01 to 5 wt %. By having such constituents, the glass composition is capable of suppressing transmission of ultraviolet light and solarization, and thus the glass composition hardly suffers from initial coloring or coloring during lamp production.

Abstract: Provided is a glass substrate, which has a substrate size of 1,100 mm×1,250 mm or more, and a transmittance at a wavelength of 500 to 800 nm and at a route length of 50 mm of 80% or more.

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 comprises, 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; 0.001-0.5% Li2O; 0.01-0.5% Na2O; 0.002-0.5% K2O; and 0-1.0%, excluding 0%, Cl.

Abstract: The present invention provides a blue-violet light blocking glass containing copper (I) halide fine particles that satisfactorily transmits light having a wavelength of 450 nm to 600 nm and sharply blocks light having a wavelength shorter than 450 nm. Specifically, the present invention provides a blue-violet light blocking glass containing a copper (I) halide and silver; for example, 20 to 85% by weight of SiO2; 2 to 75% by weight of B2O3; not more than 10% by weight of Al2O3; 2 to 30% by weight of at least one member selected from the group consisting of Li2O, Na2O, K2O, Rb2O and Cs2O; 1 to 15% by weight of at least one member selected from the group consisting of MgO, CaO, SrO, BaO and ZnO; not more than 10% by weight of at least one member selected from the group consisting of PbO, Nb2O5, ZrO2, La2O3, Y2O3, Ta2O3 and Gd2O3; not more than 5% by weight of at least one member selected from the group consisting of Sb2O3 and As2O3; not more than 5% by weight of SnO2; 0.

Abstract: The borosilicate glass for pharmaceutical packaging has a transmission ? in the visible range of more than 80% at a wavelength of 400 nm, a transmission ? in the UV range of at most 0.1% at wavelengths under 260 nm (each at a sample thickness of 1 mm), a transformation temperature Tg of 550° C. to 590° C. and a processing temperature VA of 1100° C. to 1200° C. The glass has a composition, in wt. % on an oxide basis, of SiO2, 60-80; B2O3, 5-15; Al2O3, 2-10; TiO2, 0.5-7; ? Li2O+K2O+Na2O, 3-10; ? alkaline earth oxides, 0.5-10; ZrO2, 0-3; and Fe2O3, 0-0.2. The glass is suitable for packaging UV-sensitive substances but nevertheless permits optical quality control.

Abstract: An aspect of the present invention relates to glass for a magnetic recording medium substrate, which comprises, denoted as molar percentages, 50 to 75 percent of SiO2, 0 to 5 percent of Al2O3, 0 to 3 percent of Li2O, 0 to 5 percent of ZnO, a total of Na2O and K2O of 3 to 15 percent, a total of MgO, CaO, SrO, and BaO of 14 to 35 percent, a total of ZrO2, TiO2, La2O3, Y2O3, Yb2O3, Ta2O5, Nb2O5, and HfO2 of 2 to 9 percent, with a molar ratio of {(MgO+CaO)/(MgO+CaO+SrO+BaO)} falling within a range of 0.85 to 1, and a molar ratio of {Al2O3/(MgO+CaO)} falling within a range of 0 to 0.30.

Abstract: The provided are a glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. Glasses for a magnetic recording medium substrate are, glass I comprised of an oxide glass, comprising, denoted as mass percentages: Si 20 to 40 percent, Al 0.1 to 10 percent, Li 0.1 to 5 percent, Na 0.1 to 10 percent, K 0 to 5 percent (where the total content of Li, Na, and K is 15 percent or less), Sn 0.005 to 0.6 percent, and Ce 0 to 1.2 percent; the Sb content is 0 to 0.1 percent; and not comprising As or F; glass II comprised of oxide glass, comprising, as converted based on the oxide, denoted as molar percentages: SiO2 60 to 75 percent, Al2O3 1 to 15 percent, Li2O 0.1 to 20 percent, Na2O 0.

Abstract: Disclosed is a glass flake (10) having improved heat resistance and improved chemical durability, which is composed of a glass base material satisfying, as expressed in mass %, 65?SiO2?70, 5?Al2O3?15, 1?MgO?10, 10?CaO?25 and 0.1?(Li2O+Na2O+K2O)?4. The temperature difference ?T obtained by taking the devitrification temperature of the glass base material from the working temperature thereof is preferably within the range of 0° C. to 200° C. The glass transition temperature of the glass base material is preferably within the range of 580° C. to 800° C. Furthermore, it is desirable that the value of ?W, which serves as an index for the acid resistance of the glass base material forming the glass flake (10), is within the range of 0.05 to 0.8 mass %.

Abstract: Glass compositions are provided that are useful in electronic applications, e.g., as reinforcements in printed circuit board substrates. Reduced dielectric constants are provided relative to E-glass, and fiber forming properties are provided that are more commercially practical than D-glass.

Abstract: The alkaline earth metal aluminosilicate glass for light bulbs with molybdenum parts has a composition (in percent by weight on an oxide basis) of SiO2, 56-60; Al2O3, 17-18; B2O3, 0.5-2; MgO, 0.5-2; CaO, >14-15.5; SrO, 0-3; BaO, 6-8; ZrO2, 0-5; CeO2, 0-0.1 and TiO2, 0-0.5.

Abstract: A glass having a SiO2—Al2O3—B2O3—RO (RO is at least one of MgO, CaO, BaO, SrO and ZnO) based composition, a temperature corresponding to 102.5 poise being 1570° C. or higher and an alkali content of 0.01 to 0.2% and a ZrO2 content of 0.01 to 0.3%, as expressed in % by mass. And, a glass having a SiO2—Al2O3—B2O3—RO (RO is at least one of MgO, CaO, BaO, SrO and ZnO) based composition, a density of 2.5 g/cm3 or less, an average thermal expansion coefficient of 25 to 36×10?7/° C. in a temperature range of 30 to 380° C., a strain point of 640° C. or higher and an alkali content of 0.01 to 0.2% and a ZrO2 content of not less than 0.01% and less than 0.4%, as expressed in % by mass.

Abstract: A glass composition for chemical tempering includes oxides in wt % ranges of: SiO2 60 to 75; Al2O3 18 to 28; Li2O 3 to 9; Na2O 0 to 3; K2O 0 to 0.5; CaO 0 to 3; MgO 0 to 3; ZrO2 0 to 3; where MgO+CaO is 0 to 6 wt %; Al2O3+ZrO2 is 18 to 28 wt %, and Na2O+K2O is 0.05 to 3.00 wt %. The glass has a log 10 viscosity temperature in the temperature range of 1328° F. (720° C.) to 1499° F. (815° C.); a liquidus temperature in the temperature range of 2437° F. (1336° C.) to 2575° F. (1413° C.), and a log 7.6 softening point temperature in the temperature range of 1544° F. (840° C.) to 1724° F. (940° C.). The chemically tempered glass has, among other properties, an abraded modulus of rupture of 72 to 78 KPSI, and a modulus of rupture of 76 to 112 KPSI.

Abstract: The present invention provides a mother glass composition for gradient-index lens, from which a lead-free Li-based gradient-index lens that is excellent in weather resistance, in particular weather resistance in the presence of water, can be manufactured. The mother glass composition includes the following components, indicated by mol %: 40?SiO2?65; 1?TiO2?10; 0.1?MgO?22; 0.15?ZnO?15; 2?Li2O?18; 2?Na2O?20; 0?B2O3?20; 0?Al2O3?10; 0?K2O?3; 0?Cs2?O?3; 0?Y2O3?5; 0?ZrO2?2; 0?Nb2O5?5; 0?In2O3?5; 0?La2O3?5; and 0?Ta2O5?5. The mother glass composition further includes at least two oxides selected from CaO, SrO, and BaO each in a range of 0.1 mol % to 15 mol %. The total of MgO+ZnO is greater than or equal to 2 mol %. The molar ratio of ZnO/(MgO+ZnO) is in a range of 0.07 to 0.93. The total of Li2O+Na2O is in a range of 6 mol % to 38 mol %. The total of Y2O3+ZrO2+Nb2O5+In2O3+La2O3+Ta2O5 is in a range of 0 mol % to 11 mol %.

Abstract: The neutral glass according to the present invention is characterized by excellent hydrolytic stability, a relatively low processing temperature and low content of boron oxide. Here, the neutral glass has the following composition, in percent by weight based on oxide content: SiO2, 70-79; B2O3, 0-<5; Al2O3, <5; ZrO2, 0.5-<5; TiO2, 0.5-6; Na2O, 1-6; K2O, 3 to 8; and Li2O, 0-0.5, wherein a total amount of SiO2 and B2O3 is less than 83 percent by weight.

Abstract: Provided are glass compositions with higher softening point temperatures than conventional glasses, which improve flame penetration test performance of flexible duct insulation. In particular, the glass compositions have a softening point in the range of about 1230-1276° F., a log-3 viscosity temperature in the range of about 1802-1879° F., and a temperature difference between log-3 viscosity and liquidus temperatures of at least 150° F. These glasses are specially formulated to increase softening point while only minimally increasing log-3 viscosity temperature, so as to allow fiber insulation manufacturing without requiring increased energy use.

Abstract: The invention provides an optical glass which comprises, in terms of % by mass on the basis of oxides, 35-45% of SiO2, 12-20% of B2O3, 2-7% of Li2O, 0.1-10% of ZnO, 2-15% of Al2O3, 10-40% of BaO, 0-5% of K2O, 0-10% of Na2O, and 0-20% of Gd2O3, wherein SiO2+B2O3 is 47-58% and Li2O+Na2O+K2O is 5-14%.

Abstract: The present invention relates to a process for reinforcing a glass-ceramic article, into which a maximum tension is introduced beneath the surface of the glass-ceramic, advantageously in proximity to said surface. The invention also relates to an enamel that can be used for this reinforcement, this enamel being formed from a glass frit having the following composition, the proportions being expressed as weight percentages: SiO2 50-66%? MgO 3-8% Na2O 7-15%? K2O 0-3% Li2O 0-12%? CaO 0-10%? BaO 0-15%? Al2O3 0-3% ZrO2 0-3% ZnO 0-5% B2O3 0-8% the sum of the alkaline-earth metal oxides CaO+BaO moreover being between 8 and 15%, and the sum of the alkali metal oxides Na2O+K2O+Li2O moreover being between 7 and 20%. The invention also relates to the reinforced glass-ceramics obtained.

Abstract: The invention relates to glass reinforcement strands, the composition of which comprises the following constituents in the limits defined below, expressed as percentages by weight: 59 to 63% SiO2; 10 to 16% Al2O3; 16 to 23% CaO; 1 to 3.2% MgO; 0 to 2% Na2O+K2O+Li2O; 0 to 1% TiO2; 0.1 to 1.8% B2O3; 0 to 0.5% Li2O; 0 to 0.4% ZnO; 0 to 1% MnO; and 0 to 0.5% F. These strands have improved properties in terms of mechanical strength, acid resistance and high-temperature resistance for a low-cost composition. The invention also relates to a process for producing the said strands and to the composition allowing them to be produced.

Abstract: Zirconium-containing BaO- and PbO-free X-ray opaque glasses having a refractive index nd of about 1.518 to about 1.533 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—Al2O3—B2O3 system with additions of K2O, ZrO2, and one or both of La2O3 and Cs2O. Such glasses may be used, in particular, as dental glasses or as optical glasses.

Abstract: The invention relates to a low-radiation cover glass for radiation-sensitive sensors, with low intrinsic ?-radiation, in particular for use with semiconductor technology. The glass includes a glass composition, selected from the following: aluminosilicate glass, aluminoborosilicate glass, borosilicate glass, in particular borosilicate glass that is devoid of alkali, with a TiO2 content of >0.1-10% by weight, in particular 1-8% by weight.

Abstract: A glass substrate for a display, which is formed of a glass having a light weight and having high refinability with decreasing environmental burdens, the glass comprising, by mass %, 50 to 70% of SiO2, 5 to 18% of B2O3, 10 to 25% of Al2O3, 0 to 10% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 10% of BaO, 5 to 20% of RO (in which R is at least one member selected from the group consisting of Mg, Ca, Sr and Ba), and over 0.20% but not more than 2.0% of R?2O (in which R? is at least one member selected from the group consisting of Li, Na and K), and containing, by mass %, 0.05 to 1.5% of oxide of metal that changes in valence number in a molten glass, and substantially containing none of As2O3, Sb2O3 and PbO.

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 relates to an aluminoborosilicate glass devoid of alkali, which has the following composition (in wt. % relative to the oxide content): SiO2>58-70; B2O3 0.5-<9; Al2O3 10-25; MgO>8-15; CaO 0-<10; SrO 0-<3; BaO 0-<2; with MgO+CaO+SrO+BaO>8-18; ZnO 0-<2. Said glass is eminently suitable for use as substrate glass, both in display technology and in thin-film photovoltaic technology.

Abstract: The present invention relates to an effect pigment comprising as a substrate a glass flake with a coating, said coating comprising at least one layer of at least one high refractive material, said material having a refractive index of at least 1.8, and/or at least one layer of at least one semitransparent metallic material, wherein said glass flakes comprising the following composition: 65-75 wt.-% silicon oxide, preferably SiO2 2-9 wt.-% aluminium oxide, preferably AI2O3 0.0-5 wt.-% calcium oxide, preferably CaO 5-12 wt.-% sodium oxide, preferably Na2O 8-15 wt.-% boron oxide, preferably B2O3 0.1-5 wt.-% titanium oxide, preferably TiO2 0.0-5 wt.-% zirconium oxide, preferably ZrO2 based on the weight of said glass flakes. The invention relates also to a method for producing the effect pigments as well as to the use of said effect pigments. The invention further relates to coating formulations based on the effect pigments.

Abstract: A borosilicate glass composition suitable for manufacturing microreactor glass frits includes 12-22 mol % B2O3=12-22; 68-80 mol % SiO2; 3-8 mol % Al2O3, 1-8 mol % Li2O, and one of 0.5±0.1 mol % ZrO2 and 1.1±0.5 mol % F. After sintering a glass frit having the borosilicate glass composition, the glass frit has a surface crystalline layer of 30 ?m or less or is amorphous throughout.

Abstract: The borosilicate glass with improved solarization-resistance has a transmittance curve within an area bounded by respective curves defined by the corresponding equations ?=1.7·(??277) and ?=1.6·(??284) in a wavelength range of 283 nm to 325 nm. This glass has a composition, in wt. % based on oxide content, of: 55-82, SiO2; 10-20, B2O3; 1-10, Al2O3; 0-5, Li2O; 0-10, Na2O; 0-10, K2O; 0-10, ?M2O; 0-5, MgO; 0-10, CaO; 0-5, SrO; 0-15, BaO; 0-15, ?MO; 0-3, ZrO2; 0-5, ZnO; 0-2, CeO2; 0-3, WO3; 0-2, SnO2: 0-0.1, Fe2O3; 0.05-2, MoO3; 0-5, Bi2O3; 0-1, TiO2 and 0-5, oxides of selected rare earth and Group IVB to VIIIB elements. The transmittance is adjusted by varying the MoO3 content and if necessary the TiO2 and Bi2O3 content. The glass is especially suitable for use in a weathering apparatus.

Abstract: The PbO-free UV-absorbing glass is made under oxidative conditions and has a composition, in % by weight, of: SiO2, 55-79; B2O3, 3-25; Al2O3, 0-10; Li2O, 0-10; Na2O, 0-10; K2O, 0-10; MgO, 0-2; CaO, 0-3; SrO, 0-3; BaO, 0-3; ZnO, 0-3; ZrO2, 0-3; CeO2, 0-1; Fe2O3, 0-1; WO3, 0-3; Bi2O3, 0-3; MoO3, 0-3; ?Li2O+Na2O+K2O=0.5 to 16 and ?MgO+CaO+SrO+BaO+ZnO=0-10. It also contains from 0.1 to 10% TiO2 with at least 95% of the titanium as Ti+4 so that it has a high visible transmission, reduced color centers, and a sharp UV absorption edge.

Abstract: Aluminoborosilicate glasses which may be useful in photovoltaic, photochromic, electrochromic, or Organic Light Emitting Diode (OLED) lighting applications are described.

Abstract: An object of the invention is to obtain a glass substrate having high mechanical strength by reconciling suitability for ion exchange and devitrification proof in a glass. The strengthened glass substrate of the invention is a strengthened glass substrate having a compression stress layer in the surface thereof, the glass substrate having a glass composition including, in terms of % by mass, 40-70% of SiO2, 12-25% of Al2O3, 0-10% of B2O3, 0-8% of Li2O, 6-15% of Na2O, 0-10% of K2O, 13-20% of Li2O+Na2O+K2O, 0-3.9% of MgO, 0-5% of CaO, 0-5% of ZnO, 0-6% of ZrO2, and 0-5% of SrO+BaO, the value of (MgO+ZrO2+ZnO)/(MgO+ZrO2+ZnO+Al2O3) in terms of mass proportion being from 0.25 to 0.45. The above-mentioned strengthened glass can be produced by melting raw glass materials mixed together so as to result in the given glass composition, forming the melt into a sheet by an overflow downdraw process, and then conducting an ion exchange treatment to form a compression stress layer in the glass sheet surface.

Abstract: The invention relates to a glass composition and a glass frit adequate for low temperature sintering agent at 1,100° C. or less, and a dielectric composition and a multilayer ceramic capacitor using the same. The glass composition comprises aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, in which a, b, c, d, e and f satisfy following relationships: a+b+c+d+e+f=100, 2?a?10, 2?b?10, 0?c?25, 0?d?25, 5?e?20, and 50?f?80.

Abstract: A glass substrate used as a substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD, and a glass composition used to make such a glass substrate, contains the following glass ingredients: 40 to 70% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 10% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 60 to 90% by weight; a total of 3.0 to 15% by weight of R2O compounds, where R=Li, Na, and K; a total of 2.0 to 15% by weight of R?O compounds, where R=Mg, and Zn; and a total of 1.0 to 20% by weight of MOx (TiO2+ZrO2+LnxOy), where LnxOy represents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5. Here, the following condition is fulfilled: 0.070<(total content of R?O compounds)/(SiO2+Al2O3+B2O3)<0.200.

Abstract: The invention relates to a glass for dental applications which can be used as a glazing material of dental restorations and resists high temperatures, and thus does not tend to flow.

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 concerns a glass composition for a glass body of an illuminating means with external electrodes, wherein the quotient of the loss angle (tan ?[10?4]) and the dielectric constant (??) amounts to tan ?[10?4]/??<5, i.e., tan ?/??<5×10?4). In this way, the total power loss of the illuminating means with external electrodes can be minimized in a targeted manner by means of the glass properties.

Abstract: The present invention provides a glass for anodic bonding having a low thermal expansion coefficient and capable of being subjected to laser beam micromachining. The present invention is a glass for anodic bonding having a base glass composition containing 1 to 6 mol % of Li2O+Na2O+K2O and having an average linear expansion coefficient of 32×10?7 K?1 to 39×10?7 K?1 in a temperature range of room temperature to 450° C. This glass further contains 0.01 to 5 mol % of a metal oxide as a colorant relative to the base glass composition, and has an absorption coefficient of 0.5 to 50 cm?1 at a particular wavelength within 535 nm or less.

Abstract: Thermal insulation is provided for use in applications requiring continuous resistance to temperatures of 1260° C. without reaction with alumino-silicate firebricks, the insulation comprises fibers having a composition in wt % 65%<SiO2<86% MgO<10% 14%<CaO<28% Al2O3<2% ZrO2<3% B2O3<5% P2O5<5% 72%<SiO2+ZrO2+B2O3+5*P2O5 95%<SiO2+CaO+MgO+Al2O3+ZrO2+B2O3+P2O5 Addition of elements selected from the group Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or mixtures thereof improves fiber quality and the strength of blankets made from the fibers.

Abstract: The glass for a fluorescent light with a high hydrolytic resistance, which has composition, in % by weight based on oxide content of: SiO2, 63-75; B2O3, 15-18; Al2O3, 3.2-4.5; Na2O, 1-2; K2O, 2-6; ?Na2O+K2O, 3-8; MgO, 0-8; CaO, 0-10; SrO, 0-10; BaO, 0-10; ZnO, 0-5; ?MgO+CaO+SrO+BaO+ZnO, 0-10; ZrO2, 0-3; CeO2, 0-10; Fe2O3, 0-1; WO3, 0-3; Bi2O3, 0-5; MoO3, 0-3; TiO2, 0-10; ?Hf+Ta+W+Re+Os+Ir+Pt+La+Pr+Nd+Sm+Eu+Gd+Tb+Dy+Ho+Er+Tm+Yb+Lu in oxidic form, 0 to 5% by weight, as well as one or more conventional refining agents. The glass is characterized in that it contains no lithium and has a weight ratio of Na2O to K2O of less than one.

Abstract: A strengthened glass that does not exhibit frangible behavior when subjected to impact or contact forces, and a method of strengthening a glass. The glass may be strengthened by subjecting it to multiple, successive, ion exchange treatments. The multiple ion exchange treatments provide a local compressive stress maximum at a depth of the strengthened layer and a second local maximum at or near (e.g., within 10 ?m) the surface of the glass.

Abstract: The present invention relates to a glass composition intended for the manufacture of thermally stable substrates or plates that comprises the constituents given below, in the following proportions by weight: SiO2 67-75% Al2O3 0.5-1%?? ZrO2 2-7% Na2O 2-9% K2O ?4-11% MgO 0-5% CaO ?5-10% SrO ?5-12% BaO 0-3% B2O3 0-3% Li2O 0-2% with the relationships: Na2O+K2O>10% MgO+CaO+SrO+BaO>12% and said composition having a thermal expansion coefficient between 80 and 90×10?7/° C. It also relates to the use of these glass compositions for the production of substrates, especially for emissive displays and for fire-resistant glazing.

Abstract: The invention is directed to a method for preparing visible light optical polarizers using a non-halide silver salt and any glass composition that the non-halide silver salts is soluble, provided that the glass composition, including the silver salt, was a halide content that is, on a molar basis, 10% or less than the silver content, on a molar basis, of the glass composition. The silver containing glass is hydrogen reduced prior to stretching to form an optical polarizer. The invention enables one to form a visible light polarizer having a polarizing layer thickness in the range 10-40 ?m in which the silver particles have a surround index sufficiently removed from the blue polarizer region to allow good contrast.

Abstract: Glass reinforcement strand, the composition of which comprises the following constituents, within the limits defined below, expressed as percentages by weight: SiO2 50 to 60%, preferably SiO2 ? 52% and/or SiO2 ? 57%; Al2O3 10 to 19%, preferably Al2O3 ? 13% and/or Al2O3 ? 17%; B2O3 16 to 25%; ZrO2 0.5 to 1.5%; Na2O ?1.5%, preferably Na2O ? 0.8%; K2O ?1.5%, preferably K2O ? 0.8%; R2O ?2%, preferably R2O ? 1%; CaO ?10%; MgO ?10%; F 0 to 2%; TiO2 0 to 3%; RO 4 to 15%, preferably RO ? 6% and/or RO ? 10%; and Various ?3%, where R2O = Na2O + K2O + Li2O, and RO = CaO + MgO. The dielectric properties of such glass compositions are particularly advantageous in the MHz and GHz ranges.

Abstract: The glass ceramic or glass element that can be subjected to high thermal loads is decorated with a metallic colorant. The metallic colorant consists of a melted silicate and at least one effect pigment, which is included in a specified proportion in a melt of the silicate glass to form the metallic colorant. The at least one effect pigment is in the form of platelets of synthetic aluminum oxide (Al2O3) coated with at least one metal oxide. Preferably the at least one effect pigment is a XIRALLIC® high chroma sparkle pigment supplied commercially by Merck and the metallic colorant has a pigment content of from 1 to 30 wt. %.

Abstract: An alkali-free glass characterized by having a glass composition being substantially free of an alkali metal oxide, As2O3 and Sb2O3 and including, in terms of mol %, 55 to 75% of SiO2, 7 to 15% of Al2O3, 7 to 12% of B2O3, 0 to 3% of MgO, 7 to 12% of CaO, 0 to 5% of SrO, 0 to 2% of BaO, 0 to 5% of ZnO and 0.01 to 1% of SnO2 and has a liquidus viscosity of 105.2 dPa·s or higher and a temperature corresponding to a viscosity of 102.5 dPa·s of 1,550° C. or lower.

Abstract: The present invention relates to lead and arsenic free optical hard crown glasses with a low transformation temperature (Tg?520° C.), characterized by their optical range with a refractive index of 1.57?nd?1.61 and an Abbe number of 56??d?63. The glasses have the following composition (in wt %): SiO2 37-46 B2O3 12-18 Al2O3 1-7 Li2O 5.5-<7? Na2O 1-5 K2O <4 MgO <5 CaO <7 BaO 21-29 SrO 0.1-1.5 ZnO ??1-4.5 TiO2 0.1-0.5 ZrO2 ??<0.7 with ? TiO2, ZrO2 < 0.9. Refiners can be added, provided that they do not comprise arsenic.

Abstract: Glass, glass compositions, methods of preparing the glass compositions, microfluidic devices that include the glass composition, and methods of fabricating microfluidic devices that include the glass composition are disclosed. The borosilicate glass composition includes silicon dioxide (SiO2) in a range from about 60% to 74% by total composition weight; boric oxide (B2O3) in a range from about 9% to 25% by total composition weight; aluminum oxide (Al2O3) in a range from about 7% to 17% by total composition weight; and at least one alkali oxide in a range from about 2% to 7% by total composition weight. In addition, the borosilicate glass has a coefficient of thermal expansion (CTE) that is in a range between about 30×10?7/° C. and 55×10?7/° C. Furthermore, the borosilicate glass composition resists devitrification upon sintering without the addition of an inhibitor oxide.

Abstract: A glass ceramic material sealed fuel cell device, including a first fuel cell portion and a sealant layer bonded to the first cell portion. The sealant layer includes at least three metal oxides RO-M2O3—SiO2 combined together. R is selected from the group consisting of zinc, strontium, calcium, magnesium and combinations thereof. M is selected from the group consisting of aluminum, boron, lanthanum, iron and combinations thereof. RO is present in an amount of between about 45 mol % and about 55 mol %. M2O3 is present in an amount of between about 5 mol % and about 10 mol %. SiO2 is present in an amount of about 40 mol %. RO includes RnO present in an amount of at least about 5 mol %.

Abstract: A technical object of the present invention is to satisfy various properties required in glass for liquid crystal displays and the like, in particular, fusibility, devitrification resistance, and like properties, and then to design a glass composition in which components harmful to the environment are reduced or substantially not contained, thereby obtaining a glass substrate that takes the environment into consideration. An alkali-free glass of the present invention contains the following glass composition in percent by weight based on oxide: 50 to 70% of SiO2, 10 to 20% of Al2O3, 8 to 12% of B2O3, 0 to 3% of MgO, 4 to 15% of CaO, 0 to 10% of SrO, 0 to 1% of BaO, and 0 to 5% of ZnO, and substantially free of alkali metal oxide and As2O3.

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: A subject for the invention is to provide an alkali-free glass which is capable of reducing or totally eliminating As2O3 and which has fewer bubble inclusion than that in the prior technology. The invention relates to an alkali-free glass which comprises SiO2 in an amount of from 40 to 70% by weight; Al2O3 in an amount of from 6 to 25% by weight; B2O3 in an amount of from 5 to 20% by weight; MgO in an amount of from 0 to 10% by weight; CaO in an amount of from 0 to 15% by weight; BaO in an amount of from 0 to 30% by weight; SrO in an amount of from 0 to 10% by weight; ZnO in an amount of from 0 to 10% by weight, each based on the total amount of said glass, and helium and/or neon in an amount of from 0.0001 to 2 ?l/g (0° C., 1 atm.).

Abstract: A mother glass composition for graded index lenses, comprising the following glass components in mol %: 40?SiO2?65, 1?TiO2?10, 0?MgO?22, 2?Li2O?18, 2?Na2O ?20, 6?Li2O+Na2O?38, and from 0.1 to 15 mol % of any two or more of CaO, SrO and BaO, a graded index lens using the mother glass composition, a manufacturing method of the graded index lens, and an optical product and an optical instrument using the graded index lens, are provided.