Abstract: A multi-panel glazing unit comprising a transparent, fluid sol and at least two transparent sheets of glazing material spaced apart to enclose the fluid sol, the sol wetting the inner surfaces of the glazing sheets and being thermally convertible to a cellular, non-flammable, inorganic material that adheres to the inner surfaces of the glazing sheets and that insulates against heat transfer. In an embodiment, the sol comprises a polar solvent, an aluminum compound, and a compound reactive with the aluminum compound under thermal influence to form an aluminous crystalline material.

Abstract: Cuprous halide- or a cuprous-cadmium halide-containing glass articles are produced which are essentially completely opaque to ultraviolet radiation and can De essentially completely opaque to radiation within the region of wavelengths of up to 550 nm, but are transparent to visible radiations having a wavelength longer than the radiation within the region of opacity. The method involves exposing the glass articles to a hydrogen gas-containing atmosphere at a temperature between about 375.degree.-500.degree. C. for a period of at least 18 hours to develop an integral reduced layer in at least one surface of the article having a depth effective to prevent the transmission of ultraviolet radiation and radiation having a wavelength up to 550 nm through the article.

Abstract: This invention is directed to the fabrication of substrates for rigid information disks for use in a magnetic storage device, the surface of the substrate comprising a smooth area and a low friction area. Conveniently, the substrate will comprise a photonucleable glass wherein the low friction area will have a controlled textured surface.

Abstract: Glass articles transparent to visible radiation, but opaque to ultraviolet radiation, rendering them particularly suitable for protecting the wearer of such lenses from exposure to laser radiation in the ultraviolet regions of the electromagnetic spectrum are produced. The method involves exposing silver halide-containing glass articles to flowing hydrogen in a heat chamber operating at 375.degree.-500.degree. C. for at least four hours to produce an integral reduced layer in at least one surface of the articles of sufficient depth to prevent the transmission of ultraviolet radiation through the articles.

Abstract: The subject invention is directed at wherein either a portion of the ZnO or alkali metals, or both, found in prior art glasses, is replaced by Cu.sub.2 O, i.e., cuprous or monovalent copper. In addition to the Cu.sub.2 O substitution, the inventive glass contains a required metal oxide constituent which is necessary to enhance durability. More specifically, the present invention discloses a glass consisting essentially of, expressed in terms of mole percent on the oxide basis, of about 42-54% P.sub.2 O.sub.5, 10-30% Cu.sub.2 O, 10-30% R.sub. O and 3-12% of a component selected from the group consisting of 0-7% MoO.sub.3, 0-10 Fe.sub.2 O.sub.3, 0-10% Al.sub.2 O.sub.3 and 0-7%WO.sub.3. In addition, the composition includes up to a total of 45% of optional ingredients in the indicated proportions selected from the group consisting of 0-15% MgO, 0-20% CaO, 0-20% SrO, 0-20% BaO, 0-25% MgO+CaO+SrO+BaO, 0-35% ZnO, 0-10% MnO, 0-2% CeO.sub.2, 0-10% B.sub.2 O.sub.3, 0-2% Ln.sub.2 O.sub.

Abstract: The subject invention is directed at glasses wherein either a portion of the ZnO or alkali metals, or both, is replaced by Cu.sub.2 O, i.e., monovalent copper. Specifically, the present invention is directed at a glass consisting essentially of, expressed in terms of mole percent on the oxide basis, 28-42% P.sub.2 O.sub.5, 15-30% Cu.sub.2 O, 10-30% R.sub.2 O, wherein R.sub.2 O is selected from the group consisting of 0-15% Li.sub.2 O, 0-20% Na.sub.2 O, and 0-10% K.sub.2 O, and up to a total of 45% of optional ingredients in the indicated proportions selected from the group consisting of 0-10% Al.sub.2 O.sub.3, 0-15% MgO, 0-20% CaO, 0-20% SrO, 0-20% BaO, 0-25% MgO+CaO+SrO+BaO, 0-35% ZnO, 0-10% MnO, 0-2% CeO.sub.2, 0-2% Ln.sub.2 O.sub.3, 0-10 Al.sub.2 O.sub.3 0-10% B.sub.2 O.sub.3, 0-10 Fe.sub.2 O.sub.3 0-10% Al.sub.2 O.sub.3 +B.sub.2 O.sub.3 +Fe.sub.2 O.sub.3, 0-7% MoO.sub.3 0-7% WO.sub.3 0-7% MoO.sub.3 +WO.sub.3, and 0-8% F, the latter as analyzed in weight percent.

Abstract: This invention is directed to the production of glasses essentially free of Nb.sub.2 O.sub.5, and having refractive index close to 1.7, an Abbe number of about 35 and a density close to 3.2. The glasses consist essentially in weight percent on the oxide basis, of______________________________________ SiO.sub.2 38-45 TiO.sub.2 15-<20 ZrO.sub.2 6-10 La.sub.2 O.sub.3 0.5-4 BaO 12-19 CaO 3-8 BaO + CaO + SrO 17-25 Na.sub.2 O 2-6 K.sub.2 O 4-8 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 6-10.

Abstract: A glass article that is effective in polarizing radiation in the range of 400-700 nm and method of making, the glass having an R.sub.2 O--Al.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 base glass composition, a precipitated crystal phase consisting of a halide selected from the group composed of cuprous, cadmium and mixed cuprous-cadmium halides, the crystals in the crystal phase being elongated, and a portion of the crystals near the surface of the article being at least partially reduced to colloidal copper, whereby the article exhibits permanent dichroic behavior and has a polarization efficiency across the entire wavelength range of 400-700 nm of at least 0.80.

Abstract: A fusion seal between two surfaces, and a material to produce the seal, consist essentially of 60-90 percent by weight of a SnO--ZnO--P.sub.2 O.sub.5 glass frit and 10-40 percent by weight of a mill addition including alumina and, optionally, zircon, the alumina content being at least 10% when it constitutes the mill addition and not over 20% in conjunction with zircon, 0-15 % of a further additive that reduces the effective CTE of the seal, the mill addition being present in a sufficient amount to cause a substantial change in viscosity-temperature characteristics of the material after formation of a seal. The effect of the mill addition on viscosity in a fusion seal finds particular application in uniting the faceplate and funnel members to form a cathode ray tube envelope.

Abstract: A fusion seal between two surfaces, and a material to produce the seal, consisting essentially of 60-85 percent by weight of a SnO--ZnO--P.sub.2 O.sub.5 glass frit and 15-40 percent by weight of a mill addition including an additive selected from the group consisting of 15-40% zircon and 15-40% of an alumina-zircon mixture in which the alumina content is less than 10%, the additive amounts being based on the sealing material total, the mill addition being present in sufficient amount to provide a set point of at least 300.degree. C. The effect of the mill addition in a fusion seal finds particular application in uniting the faceplate and funnel members to form a cathode ray tube envelope.

Abstract: A battery assembly comprising a separator, spaced metal/metal oxide electrodes and a liquid electrolyte, the improvement comprising a rigid, porous, ceramic separator that is wettable by the liquid electrolyte, that has a porosity of 40-90 volume %, an average pore size in the range of 0.1-25 microns, a thickness of 1-12 mm, and a weight loss of not more than about 5% when exposed to H.sub.2 SO.sub.4 having a specific gravity of 1.28 for 72 hours at 70.degree.C.

Abstract: An ivory-colored, opaque glass-ceramic having a beta-spodumene solid solution as its primary crystal phase, and a method of controlling color in the glass-ceramic. The glass-ceramic is produced from a Li.sub.2 O--Al.sub.2 O.sub.3 --SiO.sub.2 precursor glass containing 3-6% TiO.sub.2 +ZrO.sub.2 as a nucleating agent and having colorants controlled at levels of up to 20 ppm Co.sub.3 O.sub.4, up to 1000 ppm Fe.sub.2 O.sub.3 and 1000-2000 ppm CeO.sub.2.

Abstract: A flat panel display comprising an aluminosilicate glass panel that exhibits a strain point higher than 640.degree. C., a weight loss less than 20 mg/cm.sup.2 after immersion for 24 hours in an aqueous 5% by weight HCl solution at 95.degree. C., a CTE in the range of 31-57.times.10.sup.-7 /.degree. C., is nominally free of alkali metal oxides and has a composition consisting essentially of, as calculated in percent by weight on an oxide basis, 49-67% SiO.sub.2, at least 6% Al.sub.2 O.sub.3, the Al.sub.2 O.sub.3 being 6-14% in conjunction with 55-67% SiO.sub.2 and 16-23% in conjunction with 49-58% SiO.sub.2, SiO.sub.2 +Al.sub.2 O.sub.3 >68%, 0-15% B.sub.2 O.sub.3, at least one alkaline earth metal oxide selected from the group consisting of, in the proportions indicated, 0-21% BaO, 0-15% SrO, 0-18% CaO, 0-8% MgO and 12-30% BaO+CaO+SrO+MgO.

Abstract: An opaque glass-ceramic having a beta-spodumene solid solution as its primary crystal phase, and a method of controlling color in the glass-ceramic. The glass-ceramic is produced from a Li.sub.2 O-Al.sub.2 O.sub.3 -SiO.sub.2 precursor glass containing 3-6% TiO.sub.2 +ZrO.sub.2 as a nucleating agent and having colorants controlled at levels of 1500-4,000 ppm Fe.sub.2 O.sub.3, 1500-4000 ppm CeO.sub.2 and 50-500 ppm V.sub.2 O.sub.5.

Abstract: A colored glass-ceramic and method of making it. The glass-ceramic has a primary crystal phase selected from the group consisting of beta-quartz solid solution and beta-spodumene solid solution, containing an amount of TiO.sub.2 effective as a nucleating agent up to 6% by weight, 700-900 ppm Fe.sub.2 O.sub.3 and 550-3000 ppm Co.sub.3 O.sub.4, the glass-ceramic having a beta-quartz solid solution as a primary crystal phase being transparent and having a color defined by the color coordinates x=0.2200-0.3100, y=0.0200-0.2400 falling within color box ABCDA in FIG. 1 in the drawings, and the glass-ceramic having a beta-spodumene solid solution as a primary crystal phase being opaque and having a color defined by the color coordinates x=0.2480-0.2880, y=0.2000-0.3150 falling within color box JKLMJ in FIG. 2 in the drawings. Reddish-purple and violet colors are obtained in transparent, beta-quartz glass-ceramics, while light to dark blue colors are obtained in opaque, beta-spodumene glass-ceramics.

Abstract: This invention is directed to the production of a silver halide-containing glass article essentially free from silver halide crystals exhibiting a bright yellow coloration which strongly attenuates the transmission of ultraviolet radiation and radiation having a wavelength up to about 450 nm, said article having an integral reduced surface layer thereon, the depth of that layer being sufficient to effectively prevent the transmission therethrough of ultraviolet radiation and radiation having a wavelength up to about 450 nm.

Abstract: A glass-ceramic article, such as an information disk substrate, and a method of making the article. The glass-ceramic has Mg-rich pyroxene and spinel-type predominate crystal phases and a composition at least 92% of which consists essentially of 35-60% SiO.sub.2, 10-30% Al.sub.2 O.sub.3, 12-30% MgO, 0-10% ZnO, 5-20% TiO.sub.2, and 0-8% NiO.

Abstract: A barium aluminosilicate glass for production of a panel in an LCD device and a method of producing the panel. The glass consists essentially of, as calculated in percent by weight on an oxide basis, 50-65% SiO.sub.2, at least 8% Al.sub.2 O.sub.3, the Al.sub.2 O.sub.3 being 8-13% in conjunction with 55-65% SiO.sub.2 and 18-22% in conjunction with 50-55% SiO.sub.2, SiO.sub.2 +Al.sub.2 O.sub.3 >68%, 0-8% B.sub.2 O.sub.3, 2-21% BaO, 0-13% SrO, 0-18% CaO, 0-6% MgO and 13-30% BaO+CaO+SrO+MgO.

Abstract: There is disclosed an amorphous, polymeric material that contains phosphorous, aluminum and carbon atoms, and that is the reaction product of a buffered liquid mixture of a source of phosphorous, such as 85% phosphoric acid, a source of aluminum, such as boehmite, and an organic liquid buffer, such as a carboxylic acid. The polymeric material may be converted to a glassy or crystalline solid by heating to a temperature of at least 150.degree. C., and may be cellulated.

Abstract: A surface-reduced photochromic glass containing silver halide crystals, having an original transmittance of 60-75%, a darkened transmittance of less than 30% at 25.degree. C., a faded transmittance equal to the darkened transmittance plus at least 25% and a value of at least 50%, a position in a color mixture diagram between 575 and 585 nm, the glass composition having a Na.sub.2 O content of at least 1% in its surface, or containing as additives 1-6 ppm Pd, or a combination of 2-10 ppm Au and up to 0.9% Er.sub.2 O.sub.3. The glass may be chemically strengthened and generally has a longer dominant wavelength when so treated.