Abstract: Improved glass fibers compositions, typically useful for fire resistant blankets or containers to provide high burn-through resistance at high temperatures of 2,400° F. and higher, and typically comprising silica, sodium oxide, potassium oxide, calcium oxide, magnesium oxide, ferrous+ferric oxide, and titanium oxide; the improved glass compositions may further include alumina, lithium oxide, and boron oxide.

Abstract: The disclosure relates to a leucite glass ceramic doped with nanoscale metal oxide, to a doped leucite glass ceramic powder suitable for its production, to a method for producing the doped leucite glass ceramic, to its use as dental material, to a dental product containing it and to the use of the nanoscale metal oxide powders for the production of the doped glass ceramic or of the doped leucite glass ceramic powder.

Abstract: The invention relates to an antimicrobial, anti-inflammatory and disinfecting glass, whereby the glass comprises: 30–95 wt. % SiO2,0–40 wt. % Na 2O, 0–40 wt. % K2O, 0–40 wt. % Li2O, 0–35 wt. % CaO, 0–10 wt. % MgO, 0–10 wt. % Al2O3, 0–15 wt. % P2O5 wt. % B2O3?, 0–10 wt. % NaF, 0–10 wt. % LiF, 0–10 wt. % KF, 0–10 wt. % CaF2, 0–5 wt. % Ag2O, 0–10 wt. % MgF2,0–2 wt. % Fe2O3and 0–10 wt. % XJy, where X?Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Ag or Zn and y=1 or y=2 and the sum of XJy> is 10 ppm.

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

Abstract: Mathematical relationship for ingredients for fiber glass compositions are used to identify properties of the glass. In particular the forming temperature and delta T. In one embodiment, the mathematical relationship of the ingredients is of a generic quaternary SiO2, CaO, Al2O3 and MgO glass system. The relationship of SiO2, CaO, Al2O3 and MgO of interest include RO=CaO+MgO, SiO2/CaO, SiO2/RO, SiO2/Al2O3; Al2O3/CaO; SiO2+Al2O3; SiO2—RO and Al2O3/RO or RO/Al2O3 when other ingredients or components are added to the glass batch materials to alter the forming and/or liquidus temperatures of the glass, for example Na2O, Li2O, K2O and B2O3 the following mathematical relationships are of interest, (SiO2+Al2O3)/(R2O+RO+B2O3) where RO is as previously defined and R2O=Na2O+Li2O+K2O. Each of the compositional features of the glass identified above reflects the relative balance between the fluidity (i.e. viscosity) of the glass melt and its crystallization potential.

Abstract: The subject of the invention is a glass sheet intended to be thermally toughened, the matrix of which is of the silica-soda-lime type, having an expansion coefficient ? of greater than 100×10?7 K?1, a Young's modulus E of greater than 60 GPa and a thermal conductivity k of less than 0.9 W/m.K.

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

Abstract: Mathematical relationship for ingredients for fiber glass compositions are used to identify properties of the glass. In particular the forming temperature and delta T. In one embodiment, the mathematical relationship of the ingredients is of a generic quaternary SiO2, CaO, Al2O3 and MgO glass system. The relationship of SiO2, CaO, Al2O3 and MgO of interest include RO=CaO+MgO, SiO2/CaO, SiO2/RO, SiO2/Al2O3; Al2O3/CaO; SiO2+Al2O3; SiO2—RO and Al2O3/RO or RO/Al2O3 when other ingredients or components are added to the glass batch materials to alter the forming and/or liquidus temperatures of the glass, for example Na2O, Li2O, K2O and B2O3 the following mathematical relationships are of interest, (SiO2+Al2O3)/(R2O+RO+B2O3) where RO is as previously defined and R2O=Na2O+Li2O+K2O. Each of the compositional features of the glass identified above reflects the relative balance between the fluidity (i.e. viscosity) of the glass melt and its crystallization potential.

Abstract: This invention relates to a flat float glass that can be prestressed or transformed into a glass ceramic with high quartz mixed crystals or keatite mixed crystals. To eliminate undesirable surface defects during floating and to achieve superior characteristics of the glass or of the glass ceramic, in particular with regard to a low coefficient of thermal expansion and high light transmittance, the glass has a concentration of less than 300 ppb Pt, less than 30 ppb Rh, less than 1.5 wt. % ZnO and less than 1 wt. % SnO2, and is refined during melting without the use of the conventional fining agents arsenic oxide and/or antimony oxide.

Abstract: The process of the invention produces alkali-free aluminosilicate glass having an Al2O3-content of more than 12% by weight with the addition of from 0.005% by weight to 0.6% by weight of sulfate for batch formulation.

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

Abstract: The present invention is a green soda-lime-silica glass composition. The composition comprises 68 to 75% SiO2, 10 to 18% Na2O, 5 to 15% CaO, 0 to 10% MgO, 0 to 5% Al2O3, and 0 to 5% K20, where CaO+MgO is 6 to 15% and Na2O+K20 is 10 to 20%, and colorants comprising: 0.3 to 0.8 wt. % total iron as Fe2O3 wherein the ratio of FeO/total Fe as Fe2O3 is 0.35 to 0.62; 0.05 to 0.5 wt. % manganese compound as MnO2; 0 to 0.1 wt. % titanium oxide as TiO2; and 0 to 1 wt. % cerium oxide as CeO2. The colored glass has the following spectral properties at 4.0 mm. thickness: 65 to 81% light transmittance using Illuminant A (LTA) and using Illuminant C has a dominant wavelength of 494 to 555 nanometers with an excitation purity of 2 to 9%.

Abstract: The invention relates to first, second and third glasses for wavelength division multiplexing optical filters. The first glass contains 50–65 wt % of SiO2, 5–25 wt % of Na2O, 4–20 wt % of K2O, 0–20 wt % of CaO, 0–10 wt % of MgO, 0–10 wt % of BaO, 0–10 wt % of Al2O3, and 0–10 wt % of TiO2. The second glass contains 35–55 wt % of SiO2, 10–30 wt % of TiO2, 4–20 wt % of ZrO2, 5–25 wt % of Na2O, 0–10 wt % of Al2O3, 0–20 wt % of CeO2, 0–5 wt % of Li2O, 0–20 wt % of K2O, and 0–3 wt % of at least one metal oxide selected from MgO, CaO, SrO, BaO, and ZnO. The third glass contains 35–55 wt % of SiO2, 0–20 wt % of Al2O3, 0–10 wt % of B2O3, 1–35 wt % of TiO2, 1–15 wt % of CeO2, 0–10 wt % of Li2O, 5–25 wt % of Na2O, and 0–20 wt % of K2O.

Abstract: The invention encompasses a glass-ceramic comprising a continuous glass phase and a crystal phase comprising tetragonal leucite, wherein the glass-ceramic has a crack-free glass phase and a crystal phase comprising leucite crystals distributed essentially homogeneously in the glass phase. The crystal phase has a particle size distribution made of from about 5% to about 70% of a first group of leucite crystals having particle sizes of <1 ?m and from about 30% to about 95% of a second group of leucite crystals having particle sizes of ?1 ?m. The proportion of Li2O in the glass-ceramic is preferably below 0.5% by weight. It is preferred that not only the glass phase but also the crystal phase is essentially free of cracks. The corresponding glass-ceramics are particularly suitable for use in the dental sector, in particular as facing ceramics.

Abstract: A glass composition suitable for manufacturing plasma displays and large-area displays using the fusion draw process is provided. The glass composition includes 59–66 mol % SiO2, 14.5–18.0 mol % Al2O3, 8.5–12.0 mol % Na2O, 2.5–6.5 mol % K2O, 2.5–9.0 mol % CaO, 0.0–3.0 mol % MgO, 0.0–3.0 mol % SrO, 0.0–3.0 mol % BaO, and 0.0–5.0 mol % MgO+SrO+BaO.

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

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

Abstract: The present invention provides colored glass containing no hazardous substances, such as CdS, CdSe and PbCrO4, and used for lamps and covers for lighting, a colored glass bulb with yellow to orange color produced by using said colored glass, and a method for producing said colored glass and said colored glass bulb. Glass composition having a formula of R?2O—RO—SiO2 (wherein R? is an alkali metal element and R is an alkaline earth metal element) is added with 0.01–0.6 of weight ratio of Mo (molybdenum) as MoO3 and 0.01–1.0 of weight ratio of S to obtain the colored glass and the colored glass bulb therefrom. The colored glass having a formula of R?2O—RO—SiO2 is formed to a desired shape to obtain the colored glass bulb, and the shaped hollow article is heated to 400–620° C. to apply a coloring treatment thereto.

Abstract: Glass formulations, and a method of converting such glass formulations to glass beads having a refractive index of at least 1.59 and a high level of retroreflectivity, are provided. The methods and formulations provide beads also having high levels of resistance to degradation by environmental exposure.

Abstract: The invention describes a lead-free and arsenic-free special short flint glass with a refractive index 1.60?nd?1.65, an Abbe number of 41??d?52, a relative partial dispersion 0.551?PgF?0.570 in the blue spectral region, a relative partial dispersion 0.507?PCs?0.525 in the red spectral region, a negative deviation of the relative partial dispersion from the normal line ?Pg,F??0.0045 and an improved chemical resistance which has the following composition (in % by weight): SiO2 >50–65?? Al2O3 0–7 B2O3 0–6 Li2O 0–6 Na2O ?3–11 K2O 0–6 MgO ?0–12 CaO ?1–12 BaO 0–8 La2O3 ?0–15 Ta2O5 ?0–10 Nb2O5 ?4–20 ZrO2 >10–20?? ?(CaO + MgO + BaO) ?1–25 ?(Na2O + K2O + Li2O) ?3–20 SiO2/(ZrO2 + La2O3 + Nb2O5 + Ta2O5) 1.5–2.3.

Abstract: The present invention provides zinc-free glass frits that can be used to formulate glaze compositions that develop glossy surfaces when fired on ceramic products such as floor tile and wall tile. The zinc-free glass frits include, by weight, from about 50% to about 70% SiO2, from about 5% to about 20% CaO, from about 3% to about 15% Al2O3, up to about 20% BaO, up to about 15% B2O3, up to about 10% K2O, up to about 10% Na2O, up to about 10% ZrO2, up to about 5% MgO and up to about 5% PbO and less than 0.5% ZnO. Glaze compositions comprising the zinc-free glass frits can be fired using conventional double fast firing, single fast firing, and gres porcellanato ceramic firing cycles.

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

Abstract: present invention relates to a Cd-free and Pb-free glass composition comprising, based in mol %, 1–10% MO where M is selected from Ba, Sr, Ca and mixtures thereof, 5–30% MgO, 0.3–5% CuO, 0–2.5% P2O5, 0–2.5% ZrO2, 24–45% ZnO, 2–10% Al2O3, 35–50% SiO2 and 0.1–3% A2O where A is selected from the group of alkali elements and mixtures thereof wherein the glass composition is useful in thick paste dielectric materials which are compatible with AlN substrates.

Abstract: Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments of making glass according to examples of the invention, the glass batch may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage: total iron (expressed as Fe2O3): 0.01 to 0.30% erbium oxide (e.g., Er2O3): 0.01 to 0.30% cerium oxide (e.g., CeO2): ?0.005 to 0.30%.? Optionally, neodymium oxide (e.g., Nd2O3) may also be provided in the glass in certain example embodiments. In other embodiments, the cerium oxide may be replaced with or supplemented by NaNO3 or some other nitrate(s) as an oxidizer.

Abstract: The present invention provides glass for a fluorescent lamp, comprising: CeO2 of 0.1% to 1.0%, Sb2O3 of 0.05% or lower, SiO2 of 60% to 75%, Al2O3 of 0.5% to 10%, B2O3 of 0% to 5%, CaO of 0% to 8%, MgO of 0% to 8%, SrO of 0% to 15%, BaO of 1% to 12%, R2O of 13% to 22% (R represents Li, Na or K), Fe2O3 of 0% to 0.2%, TiO2 of 0% to 1.0%, and PbO of 0.05% or lower, the percent each being by mass; a glass tube for a fluorescent lamp comprises the above glass; and a fluorescent lamp comprises the above glass tube as an envelope.

Abstract: Provided is a glass composition useful in preparing fiberglass, with the composition comprising SiO2 in an amount ranging from 52-62 weight percent: B2O3 in an amount ranging from 3.5-5.5 weight percent; CaO in an amount ranging from 18-25 weight percent; MgO in an amount ranging from 0.5-4 weight percent; Al2O3 in an amount ranging from 10-15 weight percent; and Na2O in an amount ranging from 0.25-2 weight percent. The glass composition has an HTV of no greater than 2300° F. and a liquidus temperature at least 150 ° F. less than the HTV temperature. The composition allows one to realize costs savings associated with lower batch costs and abatement requirements, without significantly increasing the energy required for melting the glass, reducing fiberization efficiency, or requiring the development of new bushing technology.

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

Abstract: A crystallized glass for an optical filter substrate, which has an average linear expansion coefficient ?L of from 95×10?7/° C. to 130×10?7/° C. at from ?30° C. to 70° C. and which has a crystal or the like of Na4-xKxAl4Si4O16 (1<x?4) precipitated therein. Further, a crystallized glass for an optical filter substrate, which comprises from 35 to 60% of SiO2, from 10 to 30% of Al2O3, from 1 to 15% of TiO2+ZrO2, from 4 to 20% of Na2O, from 4 to 20% of K2O, from 0.1 to 10% of CaO+SrO+Bao, from 0 to 10% of MgO, etc., and which has ?L of from 95×10?7/° C. to 130×10?7/° C. and which has a crystal or solid solution precipitated therein.

Abstract: Improved glass compositions for glass fibers typically useful for fire resistant blankets or containers to provide high burn-through resistance at temperatures of 2,300° F. and typically comprising 10.23% to 81.81% silica, 2.0% to 26.00% alumina, 3.0% to 15.0% calcium oxide, 0% to 10.50% magnesium oxide, 1.0% to 18.0% ferrous+ferric oxide, and 0% to 4.0% titanium dioxide; the improved glass compositions may include 0% to 9% lithium oxide, 0% to 9% boron oxide, 0% to 6.0% manganese oxide, and 0% to 4.0% phosphorous oxide.

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

Abstract: Disclosed is a glass material essentially free of BaO and alkali oxide particularly suitable for the glass substrate of LCDs. The glass material consists essentially, expressed in mole percent on an oxide basis, of 70–80%, preferably 72–77% of SiO2, 3–9%, preferably 4–7% of Al2O3, 8–18%, preferably 10–16% B2O3, 3–10%, preferably 3–8% of CaO, 0–4%, preferably 0–3% RO, 0–0.2%, preferably 0–0.1% SnO, 0–1%, preferably 0 to 0.5% of XO, where RO represents, collectively, MgO, SrO and ZnO, XO represents, collectively, TiO2, ZrO2, Y2O3 and La2O3. The glass has a strain point in the range of over about 600° C., a coefficient of thermal expansion (CTE) in the range of about 23–35×10?7/° C., a density lower than about 2.35 g/cm3, a liquidus temperature lower than or equal to about 1200° C. and a durability in BHF less than or equal to 0.5 mg/cm2 weight loss.

Abstract: Mathematical relationship for ingredients for fiber glass compositions are used to identify properties of the glass. In particular the forming temperature and delta T. In one embodiment, the mathematical relationship of the ingredients is of a generic quaternary SiO2, CaO, Al2O3 and MgO glass system. The relationship of SiO2, CaO, Al2O3 and MgO of interest include RO=CaO+MgO, SiO2/CaO, SiO2/RO, SiO2/Al2O3; Al2O3/CaO; SiO2+Al2O3; SiO2?RO and Al2O3/RO or RO/Al2O3. when other ingredients or components are added to the glass batch materials to alter the forming and/or liquidus temperatures of the glass, for example Na2O, Li2O, K2O and B2O3 the following mathematical relationships are of interest, (SiO2+Al2O3)/(R2O+RO+B2O3) where RO is as previously defined and R2O=Na2O+Li2O+K2O. Each of the compositional features of the glass identified above reflects the relative balance between the fluidity (i.e. viscosity) of the glass melt and its crystallization potential.

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

Abstract: Panel glass, for a cathode ray tube, which has an SrO/(SrO+BaO) ratio of from 0.35 to 0.70, an X-ray absorption coefficient of 36.0 cm?1 or more at the wavelength of 0.6 angstrom, wherein Na2O/R2O, K2O/R2O and Li2O/R2O (R2O: Na2O+K2O+Li2O) molar ratios fall within a range surrounded by the points A (0, 0.2, 0.8), B (0.2, 0.2, 0.6), C (0.4, 0.6, 0), D (0.2, 0.8, 0) and E (0, 0.4, 0.6) in the ternary phase diagram as shown in FIG. 1.

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

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

Abstract: Glass is provided so as to have high visible transmission and/or fairly clear or neutral color. In certain example embodiments of making glass according to examples of the invention, the glass batch may include a base glass (e.g., soda lime silica base glass) and, in addition, by weight percentage: total iron (expressed as Fe2O3): ?0.01 to 0.30% erbium oxide (e.g., Er2O3): ?0.01 to 0.30% cerium oxide (e.g., CeO2): 0.005 to 0.30%. Optionally, neodymium oxide (e.g., Nd2O3) may also be provided in the glass in certain example embodiments. In other embodiments, the cerium oxide may be replaced with or supplemented by NaNO3 or some other nitrate(s) as an oxidizer.

Abstract: A glass for substrate, which consists, as represented by mass percentage, essentially of: SiO2 40 to 59%, Al2O3 ?5 to 20%, B2O3 ?0 to 8%, MgO ?0 to 10%, CaO ?0 to 12%, SrO ?2 to 20%, BaO ?0 to 2%, ZnO ?0 to 4%, Li2O ?0 to 2%, Na2O ?0 to 10%, K2O ?0 to 12%, TiO2 ?0 to 10%, and ZrO2 ?0 to 5%, wherein MgO+CaO+SrO+BaO is at least 15%.

Abstract: An insulating ceramic composition includes a mixture of a ceramic powder containing MgAl2O4 and a glass powder containing 30-60% by mole of silicon oxide on the basis of SiO2 and 20-55% by mole of magnesium oxide on the basis of MgO, and the ceramic powder further includes Mg2SiO4 and TiO2. The insulating ceramic composition can be fired at 1000° C. and co-sintered with Ag and Cu. An insulating ceramic obtained by sintering the insulating ceramic composition has a high Q-factor and is therefore suitable for ceramic multilayer substrates used at high frequencies.

Abstract: A glass ceramic composition which consists essentially of an inorganic material powder having a melting point or a glass transition point of at least 1,000° C. and a glass powder having a glass transition point of from 450 to 800° C., wherein the average of the major axes L of particles of the above inorganic material powder is from 0.5 to 15 ?m, and the average of the ratios L/W of the major axes L to the minor axes W is at most 1.4. Further, a glass ceramic composition which consists essentially of, as represented by mass percentage, from 10 to 58% of an inorganic material powder having a melting point or a glass transition point of at least 1,000° C. and from 42 to 90% of a glass powder having a glass transition point of from 450 to 800° C., wherein the glass powder consists essentially of, as represented by mol %, SiO2: 35 to 70%, B2O3: 0 to 30%, Al2O3: 3 to 18%, MgO: 0 to 40%, CaO: 0 to 19%, BaO: 0 to 35% and ZnO: 0 to 9%.

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

Abstract: A glass material for a substrate, or a glass substrate, consists essentially of the following glass ingredients: from 45 to 70 wt % of SiO2, from 1 to 10 wt % of Al2O3, from 0.5 to 8 wt % of B2O3, from 7 to 20 wt % of Li2O+Na2O+K2O, from 0.1 to 10 wt % of MgO, from 0.1 to 10 wt % of CaO, from 1 to 15 wt % of MgO+CaO, from 0.5 to 10 wt % of TiO2, from 0.5 to 10 wt % of ZrO2, from 0 to 5 wt % of ZnO, and from 0 to 8 wt % of La2O3. The glass material, or the glass substrate, has uniform composition between at the surface and in the interior and has an amorphous structure. With this design, it is possible to obtain high mechanical strength without strengthening treatment, a linear thermal expansion coefficient close to motor components, and excellent chemical durability.

Abstract: The subject of the invention is a glass composition of the silica-soda-lime type, intended for the manufacture of substrates or sheets, the said glass composition having a ? coefficient of between 0.50 and 0.85 N/(mm2.° C.) and a working point of less than 1200° C.

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

Abstract: Mineral wool capable of dissolving in a physiological medium, and which comprises fibers whose constituents are mentioned below in the following percentages by weight: SiO2 35-60%,? preferably 39-55%? Al2O3 12-27%,? ? 16-25%? CaO 0-35%, ? 3-25% MgO 0-30%, ? 0-15% Na2O 0-17%, ? 6-12% K2O 0-17%, ? 3-12% R2O (Na2O + K2O) 10-17%,? ? 12-17%? P2O5 0-5%,? ? 0-2%? Fe2O3 0-20%, B2O3 0-8%,? ? 0-4%? TiO2 0-3%,? and also comprises a phosphorus compound, the phosphorus content of which, expressed in P2O5 form, varies from 0.2%, especially from more than 0.5%, to 5%, especially to less than 2%, of the total mass of fibers, which is capable of reacting above 100° C. with the fibers to form a coating on the surface of the fibers.

Abstract: An alkali-free glass consists essentially of, in mass percent, 58-70% SiO2, 10-19% Al2O3, 6.5-15% B2O3, 0-2% MgO, 3-12% CaO, 0.1-5% BaO, 0-4% SrO, 0.1-6% BaO+SrO, 0-5% ZnO, 5-15% MgO+CaO+BaO+SrO+ZnO, 0-5% ZrO2, 0-5% TiO2, and 0-5% P2O5. The alkali-free glass contains substantially no alkali metal oxide and has a density of 2.45g/cm3 or less, an average coefficient of thermal expansion of 25×10?7/° C.-36×10?7/° C. within a temperature range between 30 and 380° C., and a strain point not lower than 640° C.

Abstract: New decorating materials suitable for the decoration of ceramic materials comprise a lead-free glass flux and at least one pigment. The glass flux comprises two lead-free glass compositions. One of the two glass compositions comprises, in weight percent, SiO2: 45 to 60%, Al2O3: 5 to 20%, B2O3: 15 to 30%, and one or more alkali metal oxides: 5 to 10%, provided that Li2O is contained in an amount of 2% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition. The other of the two glass compositions comprises, in weight percent, SiO2: 60 to 75%, Al203: 5 to 20%, at least one of MgO, CaO, ZnO: 5 to 20% in total, and one or more alkali metal oxides: 0.5 to 5%, provided that Li2O is contained in an amount of 0.5% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition.

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

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

Abstract: An aluminosilicate glass having a composition consisting essentially of, as calculated in weight percent on an oxide basis, of 58-70% SiO2, 12-22% Al2O3, 3-15% B2O3, 2-12% CaO, 0-3% SrO, 0-3% BaO, 0-8% MgO, 10-25% MCSB (i.e., MgO+CaO+SrO+BaO), and SrO and BaO in combination being less than 3%.