Abstract: These sealing glass frits are a class of frits that seal in the intermediate temperature range of 600°-800° C. The frits are based on high strain point/high CTE alkali-zinc-silicate glass compositions. The sealing frits are useful in planar solid oxide fuel cells (SOFC).

Abstract: A sealing glass composition for bonding the upper plate and the lower plate of a flat panel display device is described. The sealing glass composition includes a low melting point glass containing PbO of less than 20% and having a sintering temperature of less than 500° C. The sealing glass composition contains a low component of PbO to thereby decrease environmental contamination and increase work efficiency. Also, the sealing glass prevents the deformation and cracking of a substrate caused by thermal and mechanical stress and reduces the sintering temperature to thereby enhance the airtightness of the sealing glass.

Abstract: A ceramic color composition which comprises from 5 to 40 wt % of a heat-resistant color pigment powder, from 50 to 94.5 wt % of a glass powder, from 0 to 25 wt % of a refractory filler, and from 0.1 to 40 wt % of at least one whisker-like refractory filler selected from the group consisting of aluminum borate whiskers, &agr;-alumina whiskers, potassium titanate whiskers, zinc oxide whiskers, Na2Ca2P2O18 whiskers, magnesium oxide whiskers, magnesium borate whiskers, basic magnesium sulfate (MgSO4.5MgO.8H2O) whiskers and titanium diboride whiskers.

Abstract: A sealant for a solid oxide fuel cell comprises a glass material that acts as a matrix, with the glass material being present between about 40 to 90 wt. %. A gap-filler material is also in the sealant and selected from the group consisting of a metal material and a ceramic material, with the gap-filler material being present between about 10 to 60 wt. %. The sealant can seal a gap as large as about 3 mm.

Abstract: Lead-free alkali metal-free bismuth-borosilicate glass compositions are disclosed. These compositions are useful in preparing glass frits which are employed in glass enamel compositions which, in turn, are used to prepare glass enamel pastes. The glass enamel pastes can be coated on non-porous substrates and fused to form decorative and functional coatings on the substrates.

Abstract: A sealing glass composition in powdered form comprising a crystallizable base glass in the vitreous state and vanadium zirconium silicate in an amount from about 0.1 to 1 weight percent of the base glass. The sealing glass also may contain aluminum oxide having a particle size of about 90 to 99 percent minus 325 mesh in an amount from about 0.1 to 1.0 weight percent of the base glass and bismuth nitrate in an amount from about 0.02 to 0.08 weight percent of the base glass. The glass composition can be used to seal cathode ray tube face plates and funnels with excellent results when heated to a hold range of about 4300 C to 4500 C. The crystallized sealing glass exhibits improved adhesion to seal edges of the face plates and funnels, increased strength, and improved resistance to organic contamination.

Abstract: Porcelain compositions of the present invention comprises particulate of one or more glass or glass-ceramic powder components. Additionally, one or more opacifing agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, the particulate has a d10 of from about 1.1 and about 1.8 microns; a d50 of from about 3 to about 6 microns; a d90 of from about 8 to about 16 microns; and about 1.0 to about 4.0% by volume of the particulate has a particle size greater than or equal to about 20 microns. The mean particle size is preferably in the range of about 3.0 microns to about 7.5 microns.

Abstract: This invention relates to lead-free silicate glasses that find use in producing fine crystal glassware and in laminated ware applications. The glasses consist essentially, in weight percent, of: SiO2 52-66 ZnO 15-30 Al2O3 0-4 BaO 0-7 Li2O 0-4 MgO + CaO + SrO 0-4 Na2O  3-16 ZrO2 0-4 K2O  0-12 B2O3  0-4.

Abstract: The present invention provides a ceramic tile and a glaze composition for use in forming the tile. The glaze composition comprises a glass component, an expansion modifier and a spodumene crystallization promoter. The spodumene crystallization promoter comprises a material that promotes the formation of beta spodumene during the firing of the glaze composition.

Abstract: A glass composition comprising, in mole percent of the total composition: glass-forming compounds in a total amount of 75 to 85%, wherein said glass forming compounds comprise 40 to 65% SiO2, 10 to 20% Bi2O3 and 0.1 to 3% Al2O3, and glass modifiers in a total amount of 15 to 25%, wherein said glass modifiers comprise 1 to 23 % ZnO, 0.1 to 5% CuO, 0.1 to 5 CaO and 0.1 to 2% MgO, thick film formulations containing said composition and uses thereof.

Abstract: Alkali silicate glasses are described which, in view of their good chemical stability and their optical properties and processing properties, are particularly suitable as a coating or veneering material for ceramic dental frameworks and hence for the production of all-ceramic dental restorations such as crowns or bridges.

Abstract: The present invention relates to a sealing glass composition, which is able to seal a panel and funnel of a color TV at low temperature for a short time by adding Garnet(Fe.sub.3 Al.sub.2 Si.sub.3 O.sub.12) as a nucleating agent and filler component to control the thermal expansion coefficient.

Abstract: The lead- and cadmium-free glass composition for glazing, enameling and decorating glass or glass-ceramic articles contains high quartz and/or keatite solid solution crystals as principal crystalline phases after crystallization and a low thermal expansion coefficient of less than 2.times.10.sup.-6 /K at temperatures between 20 and 700.degree. C. This glass composition contains Li.sub.2 O, 0 to 5% by weight; Na.sub.2 O, 0 to 5% by weight; K.sub.2 O, less than 2% by weight; MgO, 0 to 3% by weight; CaO, 0 to 4% by weight; SrO, 0 to 4% by weight; BaO, 0 to 4% by weight; ZnO, 0 to 4% by weight; B.sub.2 O.sub.3, 15 to 27% by weight; Al.sub.2 O.sub.3, 10 to 20% by weight; SiO.sub.2, 43 to 58% by weight; TiO.sub.2, 0 to 3% by weight and ZrO.sub.2, 0 to 4% by weight, Sb.sub.2 O.sub.3, 0 to 2% by weight; F, 0 to 3% by weight in exchange for oxygen and up to 30% by weight of at least one inorganic pigment resistant to a burning-in temperature on the glass or the glass-ceramics. The sum total amount of Li.sub.2 O, Na.

Abstract: Porcelain compositions of the present invention comprise one or more glass or glass-ceramic powder components. Additionally, one or more opacifying agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, 10% of the particulate in the porcelain has a particle size of less than between about 1.1 microns and about 1.5 microns, 50% of the particulate in the porcelain has a particle size of less than between about 3 and about 6 microns, 90% of the particulate in the porcelain has a particle size of less than between about 8 and about 13.5 microns, and the maximum particle size of the particulate is greater than about 20 microns and less than about 60 microns. The mean particle size is preferably in the range of about 3.0 microns to about 6.5 microns.

Abstract: A dielectric forming material for a plasma display panel enables to form a dielectric layer having a high dielectric strength and good transparency. The dielectric forming material is provided with a green sheet in form that comprises, as a component, glass powder having a 50% particle diameter D.sub.50 which is not more than 2.8 .mu.m. Preferably, the glass powder preferably may have the maximum particle diameter D.sub.MAX which is not more than 18 .mu.m. Desirably, the green sheet essentially may consist by weight of 60-80% the glass powder, 0-10% ceramic powder, 5-30% thermoplastic resin, and 0-10% plasticizer.

Abstract: The present invention provides a porcelain enamel coating composition for use in forming a coating composition upon a metal substrate having an infrared reflectivity of at least 50% at 2.5 .mu.-microns measured with a Perkin Elmer Lambda 19 UV/VIS/NIR spectrometer with a labsphere RSA-PE 19 reflectance spectroscopy accessory. The coating composition comprises a glass component and a separate and distinct addition of cerium oxide. Preferably, the coating composition comprises from about 0.20% to about 3.0% by weight of the cerium oxide.

Abstract: A glaze composition suitable for a thin chip substrate, for example. The glaze composition makes a low-temperature glazing possible and is superior in the electrical and chemical stability. The glaze composition can prevent even a thin substrate from warping and can easily form an extensive smooth glaze layer without deteriorating a thin glaze face. The components of the composition are 20% to 50% by weight of boron oxide, 5% to 35% by weight of aluminum oxide, and 15% to 55% by weight of at least one alkaline-earth oxide selected from the group consisting of calcium oxide, strontium oxide, magnesium oxide and barium oxide.

Abstract: Glass frits containing lithium are used in thick film palladium-silver compositions which after firing result in conductors or resistors that exhibit very low resistivity and TCR.

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

Abstract: A glass flux composition consisting essentially in mol percent of 3.0-13.0 lithium oxide, 0.5-3.5 potassium oxide, 2.5-7.0 sodium oxide, 0.5-2.5 zinc oxide, 2.0-8.0 aluminium oxide, 15-30 boron oxide, 44-68 silica, 1.0-7.0 zirconium oxide, 0-4.0 calcium oxide, 0-3.0 lanthanum oxide, 0-1.0 other rare earth metal oxide, 0-1.0 yttrium oxide, 0-4.0 magnesium oxide, 0-4.0 strontium oxide, 0-4.0 titanium oxide, 0-10 phosphorus pentoxide, 0-1.5 lead oxide and 0-13.0 fluoride is useful for preparing an enamel or cover flux composition, especially for application to ceramic ware.

Abstract: The invention pertains to a new lead-free glass composition with improved properties, a glass frit of this composition and its use for the production of glass-enamel, particularly for architectural glass. The glass composition contains in mole %:______________________________________ Na.sub.2 O 10-15 K.sub.2 O 0.1-2 SiO.sub.2 40-50 B.sub.2 O.sub.3 8-12 TiO.sub.2 4-7 Al.sub.2 O.sub.3 0.1-3 ZnO 13-17 F 1-5 ______________________________________and less than 0.5 weight % each of the oxides of the series PbO, CdO, P.sub.2 O.sub.5, and alkaline earth metal oxides. Use of a dye preparation containing the glass frit at 600.degree. to 650.degree. C. results in bakeable glazed, crack-free, acid and base resistant enamel layers.

Abstract: A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistant pigment powder, from 60 to 95 wt % of a powder of zinc-containing glass and from 0 to 10 wt % of a refractory filler powder, wherein said glass consists essentially of the following components:______________________________________ SiO.sub.2 30 to 60 wt % ZnO 8 to 60 wt % B.sub.2 O.sub.3 0 to 5 wt % Li.sub.2 O 0 to 20 wt % Na.sub.2 O 0 to 20 wt % K.sub.2 O 0 to 20 wt % Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0.1 to 20 wt % MgO + CaO + SrO + BaO 0 to 20 wt % Bi.sub.2 O.sub.3 0 to 40 wt % TiO.sub.2 0 to 10 wt % F 0 to 5 wt %.

Abstract: The present invention provides a new and improved thick film paste for use as an acid resistant overglaze. In one preferred embodiment such paste includes a glass composition comprising in weight percent from about 30% to about 60% PbO, from about 5% to about 20% ZnO, from about 2% to about 20% B.sub.2 O.sub.3, from about 4% to about 12% Al.sub.2 O.sub.3, from about 5% to about 18% SiO.sub.2, up to about 8% ZrO.sub.2, up to about 8% TiO.sub.2 and from about 9% to about 21% Nb.sub.2 O.sub.5.

Abstract: A lead-free insulating glass composition comprises (A) 50 to 85 wt. % of a glass comprising, on a weight basis, 28 to 38% of SiO.sub.2, 4 to 10% of B.sub.2 O.sub.3, 8 to 16% of Al.sub.2 O.sub.3, 15 to 23% of MgO, 1 to 12% of CaO, 3 to 9% of BaO, 8 to 16% of ZnO, and 3 to 8% of ZrO.sub.2 ; and (B) 50 to 15 wt. % of at least one filler selected from the group consisting of alumina and zircon. When using this glass composition as an insulating layer of a thick-film multilayer circuit board, there can be obtained a highly reliable thick-film multilayer circuit board in which the warpage of the substrate and leakage current are greatly reduced and the withstand voltage is highly improved.

Abstract: A glass composition which is essentially free of lead and cadmium includes 30 to 70 wt % SiO.sub.2, 1 to 25 wt % B.sub.2 O.sub.3, 0 to 10 wt % Al.sub.2 O.sub.3, 0 to 5 wt % Bi.sub.2 O.sub.3, 0.1 to 30 wt % CoO, 0.1 to 20 wt % ZnO, 1 to 30 wt % total of at least one of Li.sub.2 O, Na.sub.2 O or K.sub.2 O, up to 10 wt % ZrO.sub.2 and other optional ingredients. The glass composition can be used as a blue colored on-glaze enamel which relies upon the presence of Co.sup.2+ in a network-forming position in the glass to produce the blue color, with oxygen donors such as ZnO.sub.2, alkaline earth oxides and alkali oxides increasing the amount of cobalt occupying network-forming positions, and ZrO.sub.2 to provide chemical durability.

Abstract: This invention relates to a lead-free glass enamel for glass beverage containers and a method of decorating glass beverage containers using such glass enamel. The method includes the steps of:i) providing a glass beverage container;ii) providing a decorative lead-free glass enamel comprising a glass frit, the glass frit comprising in weight percent from 17% to 28% SiO.sub.2, from 12% to 30% B.sub.2 O.sub.3, up to 3% Al.sub.2 O.sub.3, up to 13% Na.sub.2 O, up to 13% K.sub.2 O, up to 14% TiO.sub.2, from 5% to 30% ZnO, up to 14% ZrO.sub.2, up to 6% CeO, up to 6% Y.sub.2 O.sub.3, from 1% to 8% La.sub.2 O.sub.3, up to 1% MgO, up to 5% CaO, up to 10% SrO, up to 16% BaO, from 0.5% to 5% fluoride, a maximum of 5% each of WO.sub.3, P.sub.2 O.sub.5, Bi.sub.2 O.sub.3, Sb.sub.2 O.sub.3 and MoO.sub.3, with the provisions that the sum of the levels of plus Na.sub.2 O plus K.sub.

Abstract: A lead-free ceramic glaze comprising, by weight:(i) between about 27 and 35% SiO.sub.2 ;(ii) between about 9 and 15% Al.sub.2 O.sub.3 ;(iii) between about 26 and 34% B.sub.2 O.sub.3 ;(iv) between about 4 and 9% BaO;(v) up to about 2.5% CaO;(vi) between about 3 and 8% SrO;(vii) between about 6 and 12% ZnO;(viii) up to about 1% K.sub.2 O;(ix) between about 1 and 4% Li.sub.2 O;(x) between about 1.5 and 3% Na.sub.2 O; and(xi) balance of minor impurities.Also disclosed are ceramic substrates spray coated with such composition and a method for making a lead-free glaze to a ceramic substrate using lower firing temperatures, on the order of 1550.degree. to 1650.degree. F. (843.degree. to 899.degree. C.).

Abstract: A ceramic enamel composition is described which contains a zinc-containing oxide frit, a zinc borate seed material, a pigment, and a vehicle. The zinc borate seed material is preferably crystalline in nature, and promotes crystal growth upon firing. A preferred crystalline zinc borate seed material is selected from the phases Zn.sub.3 B.sub.2 O.sub.6 and Zn(BO.sub.2).sub.2, and mixtures thereof. Upon firing and press-forming a glass substrate coated with the enamel, components of the enamel adhere to the substrate while reducing sticking of the coated region to the forming die. The ceramic enamel is particularly useful in providing a colored border around the periphery of automotive glass and is effective in improving appearance and reducing degradation of underlying adhesives by ultraviolet radiation.

Abstract: A lead- and cadmium-free glass-frit composition based on a borate glass and containing 4 to 22 mole % La.sub.2 O.sub.3 and 0 to 10 mole % SiO.sub.2 as network-forming oxides and B.sub.2 O.sub.3, wherein the molar ratio of B.sub.2 O.sub.3 to La.sub.2 O.sub.3 is at least 3 to 1. The compositions have an alpha in a range between approximately 50.cndot.10.sup.-7 K.sup.-1 and approximately 100.cndot.10.sup.-7 K.sup.-1 and the start of melting Td in a range between 470.degree. and 670.degree. C.

Abstract: The present invention relates to self-opacifying enamel frit compositions that can be used for the enamelling of aluminium or aluminium alloys.

Abstract: A flux composition containing as a first component:50 to 75% by weight Bi.sub.2 O.sub.3 ;15 to 25% by weight SiO.sub.2 ;4 to 10% by weight B.sub.2 O.sub.3 ;2 to 9% by weight ZnO;1 to 4% by weight alkali oxide; andoptionally as a second component a compound selected from CaO, ZrO.sub.2, MgO, SrO, Al.sub.2 O.sub.3, SnO.sub.2, TiO.sub.2, BaO, MoO.sub.3, F.sub.2 and Fe.sub.2 O.sub.3. The flux composition is typically used as a major component of a paint composition having minor portions of a pigment and liquid medium. The paint compositions are particularly suited for coating glass.

Abstract: A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistance pigment powder, from 60 to 95 wt % of a zinc-containing glass powder and from 0 to 10 wt % of a refractory filler powder, wherein said glass powder consists essentially of the following components:______________________________________ SiO.sub.2 27 to 40 wt % B.sub.2 O.sub.3 10 to 20 wt % ZnO 35 to 45 wt % Li.sub.2 O 0 to 5 wt % Na.sub.2 O 0 to 10 wt % K.sub.2 O 0 to 5 wt % Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0 to 15 wt %.

Abstract: Lead-free glass frits having the following composition in weight percent:______________________________________ ZnO 25-35 SiO.sub.2 10-17 ZrO.sub.2 0-2 Al.sub.2 O.sub.3 0-4 Na.sub.2 O 8-12 B.sub.2 O.sub.3 20-30 Bi.sub.2 O.sub.3 6-25 F.sup.-1 1-5 ______________________________________are useful in the formulation of ceramic enamel compositions.

Abstract: Lead-free glass frits having the following composition in weight percent:______________________________________ ZnO 25-35 SiO.sub.2 10-17 ZrO.sub.2 0-2 Al.sub.2 O.sub.3 0-4 Na.sub.2 O 8-12 B.sub.2 O.sub.3 20-30 Bi.sub.2 O.sub.3 6-25 F.sup.-1 1-5 ______________________________________are useful in the formulation of ceramic enamel compositions.

Abstract: The present invention relates to a zinc oxide varistor as a characteristic element of an arrestor for protecting a transmission and distribution line and peripheral devices thereof from surge voltage created by lightning, and more particularly a highly reliable zinc oxide varistor excellent in the non-linearity with respect to voltage, the discharge withstand current rating properties, and the life characteristics under voltage, a method of preparing the same, and PbO type crystallized glass for coating oxide ceramics employed for a zinc oxide varistor, etc. A zinc oxide varistor of the present invention comprises a sintered body (1) and a high resistive side layer (3) consisting of crystallized glass with high crystallinity containing the prescribed amount of SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, NiO, etc.

Abstract: As a sealing composition which can seal a panel and a funnel of a color CRT at a relatively low temperature for a relatively short time, a non-crystallizing sealing glass essentially consists of PbO--ZnO--B.sub.2 O.sub.3 --Bi.sub.2 O.sub.3 --CS.sub.2 O system and has a thermal expansion coefficient of 80 to 95.times.10.sup.-7 /.degree.C. The sealing glass can be used as a mixture with 40 to 5 volume percent of refractory filler powder. The PbO--ZnO--B.sub.2 O.sub.3 --Cs.sub.2 O system glass consists essentially of, by weight, 65-80% of PbO, 5.5-8% of B.sub.2 O.sub.3, 3-9% of ZnO, 7-22% of Bi.sub.2 O.sub.3, 16% or more of ZnO +Bi.sub.2 O.sub.3, 0.2-1% of SiO.sub.2, 0.3-2% of Fe.sub.2 O.sub.3, and 1.5-4.5% of Cs.sub.2 O. The refractory filler is at least one element selected from tin oxide, lead titanate, and zinc silicate.

Abstract: A lead-free ceramic glaze comprising, by weight:(i) between about 27 and 35% SiO.sub.2 ;(ii) between about 9 and 15% Al.sub.2 O.sub.3 ;(iii) between about 26 and 34% B.sub.2 O.sub.3 ;(iv) between about 4 and 9% BaO;(v) up to about 2.5% CaO;(vi) between about 3 and 8% SrO;(vii) between about 6 and 12% ZnO;(viii) up to about 1% K.sub.2 O;(ix) between about 1 and 4% Li.sub.2 O;(x) between about 1.5 and 3% Na.sub.2 O; and(xi) balance of minor impurities.Also disclosed are ceramic substrates spray coated with such composition and a method for making a lead-free glaze to a ceramic substrate using lower firing temperatures, on the order of 1550.degree. to 1650.degree. F. (843.degree. to 899.degree. C.).

Abstract: The present invention is directed to the preparation of frit pastes suitable for sealing together preformed glass parts, being especially suitable for sealing glass panels to funnels of cathode ray tubes. The pastes comprise a mixture of frit particles, a lacquer, and at least one additive in an amount of 0.0005-2% by weight total of the lacquer. The preferred additives are selected from the group of alkyl organic phosphate esters, a mixed titanium ortho ester complexes, and substituted sorbitols in the polyol acetal family.

Abstract: A paint composition containing as a major portion a flux composition including a first flux containing silica, alkali oxide, zinc oxide and boron oxide but containing no lead or lithium and optionally a second flux, and minor portions of pigment and a liquid medium, particularly suited for automobile windshields.

Abstract: The invention is directed to a lead-free and cadmium-free thick film paste composition suitable for forming resistor or thermistor patterns on a substrate.

Abstract: A screen-printable thick film paste composition suitable for forming conductive patterns on a rigid substrate comprising:(a) finely divided particles of a lead-free glass composition having a softening point log (eta)=7.6 poise from 400.degree. C.-650.degree. C., a log (eta.) specific viscosity in a range from 2 at 500.degree. C. to 5 at 700.degree. C. and consisting essentially of, by weight 65-95% Bi.sub.2 O.sub.3, 2-15% SiO.sub.2, 0.1-9% B.sub.2 O.sub.3, 0-5% Al.sub.2 O.sub.3, 0-5% CaO, and 0-20% ZnO; and(b) electrically conductive particles; andall of (a) and (b) being dispersed in (c) an organic medium.

Abstract: The invention concerns a lead-free glaze or enamel for use on ceramic bodies such as bone china. In one embodiment the glaze or enamel includes a hard glass frit which comprises by weight percent from about 45% to about 70% SiO.sub.2, from about 4% to about 15% B.sub.2 O.sub.3, from about 4% to about 17% Al.sub.2 O.sub.3, from about 1% to about 9% Na.sub.2 O, from about 1% to about 9% K.sub.2 O, from about 0.2% to about 5% Li.sub.2 O, from about 0.4% to about 12% CaO, from about 0.1% to about 7% ZrO.sub.2, up to about 3% ZnO, up to about 2% WO.sub.3, up to about 2% Bi.sub.2 O.sub.3, and up to about 2% MoO.sub.3.

Abstract: The present invention relates to a zinc oxide varistor as a characteristic element of an arrestor for protecting a transmission and distribution line and peripheral devices thereof from surge voltage created by lightning, and more particularly a highly reliable zinc oxide varistor excellent in the non-linearity with respect to voltage, the discharge withstand current rating properties, and the life characteristics under voltage, a method of preparing the same, and PbO type crystallized glass for coating oxide ceramics employed for a zinc oxide varistor, etc. A zinc oxide varistor of the present invention comprises a sintered body (1) and a high resistive side layer (3) consisting of crystallized glass with high crystallinity containing the prescribed amount of SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, NiO, etc.

Abstract: The invention is directed to a thick film paste composition comprising electrically conductive particles and finely divided particles of a glass composition comprising by mole % 5-70% Bi.sub.2 O.sub.3, 18-35% SiO.sub.2, 0.1-40% CuO, 0.5-25% ZnO, 0.5-40% CoO, 0.5-40% Fe.sub.2 O.sub.3, and 0.5-40% MnO, which the glass composition is free of lead and cadmium, all dispersed in an organic medium.

Abstract: The present invention provides free-flowing chemically resistant color granulates that are heat resistant and color stable in aggressive media. The color granulates comprise 20-94.8% by weight coloring bodies, 5-75% by weight of one or more frits, 0.220% by weight binder and 0.03-15% by weight organosilanes and/or polyorganosiloxanes. The glass frit comprises by weight 20-90% SiO.sub.2 +B.sub.2 O.sub.3 +Al.sub.2 O.sub.3, 0-6% Na.sub.2 O+Li.sub.2 O, 0-6% K.sub.2 O, 10-25% CaO+MgO+ SrO, 0-35% TiO.sub.2 +ZrO.sub.2, 0-40% Bi.sub.2 O.sub.3 +P.sub.2 O.sub.5 +V.sub.2 O.sub.5 +MoO.sub.3 +WO.sub.3 and 0-10% ZnO.

Abstract: This invention is directed to a glass frit composition essentially free from lead and cadmium exhibiting a linear coefficient of thermal expansion (25.degree. C.-300.degree. C.) between about 75-85.times.10.sup.-7 /.degree.C., good flow at temperatures between about 950.degree.-1000.degree. C., a softening point between about 650.degree.-725.degree. C., and excellent resistance to attack by alkaline detergent and hydrochloric acid, said frit consisting essentially, expressed in terms of weight percent on the oxide basis (except for the fluorine content), of______________________________________ SiO.sub.2 49-55 MgO 0-2 B.sub.2 O.sub.3 13-20 CaO 1-7 Al.sub.2 O.sub.3 4.5-7 SrO 0-8 Na.sub.2 O 5-8.5 BaO 0-11 K.sub.2 O 5-8.5 ZnO 0-2 Na.sub.2 O + K.sub.2 O 11-16 F 0.25-3.

Abstract: A conductive paste contains at least a conductive powder and a glass frit. The glass frit includes 9.0 to 45.0 wt % of SiO.sub.2 and 1.0 to 18.5 wt % of CaO, the balance being ZnO, B.sub.2 O.sub.3 and Li.sub.2 O. The glass frit may contain not more than 6.0 wt % of Al.sub.2 O.sub.3 incorporated therein as additive.

Abstract: There is disclosed a passivating coating composition suitable for application as a collar to metal oxide varistor valve block cylindrical surfaces comprising a mixture of 64-74 parts by weight of a glass powder, 22-35 parts by weight of water, and 0.5-2 parts by weight of an additive comprising fumed silica, clay and urea.

Abstract: Glass frits are disclosed which are essentially free of lead and contain 0.05 to 15 mol-% sulfur and/or sulfides, preferably zinc sulfide. A process is disclosed for producing a glass frit by melting a mixture of oxides and/or non-oxide compounds (fluorides, carbonates) at temperatures of 1,000.degree. to 1,300.degree. C., followed by sudden cooling, characterized in that the glass frit contains between 0.05 and 15 mol-% sulfur, zinc sulfide or other sulfides. The glass frits can be used in enamel barrier layers for stopping the migration of silver.

Abstract: Low-expansion devitrifying glass compositions exhibiting a negative-slope temperature coefficient of expansion over a temperature range from about 125.degree. C. to about 500.degree. C. are useful for the fabrication of thick film copper via-fill inks of multilayer printed-circuit boards.