Abstract: A compound constructed by N (N is an integer of 2 or more) kinds of phases containing at least one kind of elements selected from a group consisting of Co, Ti, V, Cr, Mn, Fe, Ni, Si, Pb, Bi and Al. At least one kind to (N?1) kinds among the N kinds of phases are continuous phases, and the other phases are discontinuous phases.

Abstract: A window glass for vehicles equipped with a conductor, which comprises a glass plate, a patterned conductor layer formed on the glass plate, and a covering layer formed to cover the conductor layer, wherein the covering layer comprises a fired product obtained by firing a composition containing a crystalline glass powder and a reducing agent capable of reducing silver ions.

Abstract: Low dielectric constant dielectric ceramics for a borosilicate-based low temperature fired multi-layer substrate is disclosed which can be fired at a wide temperature range of above and below 900° C. and exhibits a low loss electrical property. By controlling the types and addition amount of the alkaline earth metal oxide, the linear shrinkage behavior can be considerably controlled while maintaining the electrical property unchanged. The composition facilitates matching a linear shrinkage with a heterogeneous material having certain shrinkage characteristics.

Abstract: Disclosed is a lead-free low softening point glass whose composition lies within the system SnO—P2O5 and containing over 5 to 30 mol % of MnO. The addition of MnO allows the water resistance and coefficient of thermal expansion of the glass to be improved without spoiling its feature of a low softening point. The lead-free low softening point glass can be prepared through a simplified production process.

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: Disclosed is a lead-free low softening point glass whose composition lies within the system SnO—P2O5 and containing over 5 to 30 mol % of MnO. The addition of MnO allows the water resistance and coefficient of thermal expansion of the glass to be improved without spoiling its feature of a low softening point. The lead-free low softening point glass can be prepared through a simplified production process.

Abstract: A method of providing covert security features for documents such as vouchers, packaged goods and banknotes in which the document is provided with a dopant. The dopant consisting of a material which can be identified by examination of its response to visible wavelength photon radiation and which can be applied directly on or into the document or can be fused into glass matrices before application.

Abstract: The present invention provides partially crystallizing lead-free and cadmium-free glass enamel composition that fuse at low temperatures. Glass enamel compositions according to the present invention form predominantly bismuth titanate and optionally zinc titanate crystals upon firing. Preferably, glass enamel compositions according to the invention include a glass component that includes by weight from about 11% to about 52% SiO2, from 10.2% to about 40% TiO2, from about 5% to about 75% Bi2O3, up to about 8% B2O3, up to about 14% BaO+SrO, and up to about 45% by weight ZnO, where the sum of Bi2O3 and ZnO comprises from about 30% to about 85% of the glass component by weight.

Abstract: A new lead-free glass flux suitable for the decoration of ceramic materials comprises SiO2, Al2O3, B2O3 and Li2O as essential components. The lead-free glass flux is a glass mixture in which a glass composition having a relatively low coefficient of thermal expansion and a glass composition having a relatively high coefficient of thermal expansion and a relatively high chemical resistance are mixed at an appropriate ratio.

Abstract: The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2—SiO2—MeIIO, or (II) SiO2—MeIIIO2—MeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Abstract: The present invention provides a composition for use in forming an abrasion-resistant easy-to-clean coating on a substrate. The composition according to the invention includes a mixture of a fluorocarbon polymer component and an enamel-forming component. The enamel-forming component includes at least a first lead-free and cadmium-free glass frit. The first lead-free and cadmium-free glass frit includes from about 30% to about 50% P2O5, from about 15% to about 30% Al2O3, and from about 2% to about 40% X2O where X=Na and/or K. The present invention also provides a method of forming an abrasion-resistant easy-to-clean coating on a substrate. The method includes applying the composition according to the invention to a substrate and sintering the applied composition to fuse an abrasion-resistant easy-to-clean coating to the substrate.

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: A glass composition consisting essentially by mol percent of about 55<SiO2<75; 5<BaO<30; and 2 <MgO<22 for use as a matrix of composite materials. A method of making a glass matrix-ceramic particulate composition useful for sealing electrochemical structures, such as solid oxide fuel cells is also disclosed. Method steps include the admixture of finely divided Mg2SiO4 particulates with the matrix glass, to reach an overall composition by mol percent of about 55<SiO2<65; 5<BaO<15; and 25<MgO<35.

Abstract: The present application relates to a process for the manufacture of pigmented vitreous materials, as well as to pigmented vitreous materials, characterized by the use of soluble pigment precursors and preferably the absence of significant amounts of dispersants. These pigmented vitreous materials can be used as colored materials for any known purposes. Soluble pigment precursors comprising a partial structure are also claimed, wherein X1 is an aromatic or heteroaromatic ring, B is hydrogen or a group of the formula but at least one group B is not hydrogen, and L is a solubilizing group.

Abstract: A dense lead-free glass ceramic that has low dielectric constant and low dielectric loss for producing high-frequency ceramic devices, such as inductors and low temperature co-fired ceramics (LTCC), is disclosed. The glass ceramic consists of 15-35% by weight of lead-free borosilicate glasses with low softening point, 15-35% by weight of lead-free borosilicate glasses with high softening point, 20-80% by weight of combination of amorphous and crystalline SiO2-filler (preferably 5-30% by weight of amorphous SiO2, 10-50% by weight of crystalline SiO2) and 0.1-10% by weight of at least one oxide of Al2O3, BaO, Sb2O3, V2O5, CoO, MgO, B2O3, Nb2O5, SrO and ZnO. The glass ceramic can be densified up to 99% of its theoretical density after firing and is co-firable with conductive metals between 800-900° C. The dense glass ceramic has dielectric constant of 4.2-4.6 and loss tangent (tan ?)<0.0025 at 20 MHz and good thermal/mechanical strength for application in high frequency electronic devices.

Abstract: The present invention provides a composition for use in forming a porcelain enamel coating having a metallic appearance. The composition according to the invention preferably includes a low shear blend of a glass component and metal particles such as aluminum, nickel, copper and stainless steel. The glass component includes at least one glass frit that fuses at a temperature of less than about 600° C. Upon firing at a temperature of from about 535° C. to about 600° C., the composition forms a vitreous porcelain enamel coating that has a metallic appearance, which through the incorporation of various optional pigments and/or mill additions, can range from a bright brushed nickel or stainless steel appearance to a matte dark metallic finish.

Abstract: Glass composition for use as sealing material in fuel cells, comprising a glass matrix with main components consisting of SiO2, Al2O3, and one or more compounds from group I metal oxides and/or group II metal oxides, and a filler material evenly dispersed in the matrix, wherein the filler material consists of particles of one or more refractive compounds from the group: MgO—MgAl2O4, stabilized zirconia, rare earth oxides, (Mg,Ca)SiO3, Mg2SiO4, MgSiO3, CaSiO3, CaZrO3, ThO2, TiO2, MIIAlSi2O8, where MII=Ca, Sr or Ba.

Abstract: A glass paste comprising an inorganic powder, wherein the powder has a refractive index of 2.0 or more, a reflective index at wavelengths of light of 400 nm, 550 nm and 700 nm in a light reflection spectrum of 80% or more, a primary particle size measured by scanning electron microscopy of from 0.1 &mgr;m to 10 &mgr;m, and a BET specific surface area of from 0.1 m2/g to 15 m2/g.

Abstract: A chemical, thermal, and electrical corrosion resistant dry mix for use in fusing glass to metal motor vehicle and building industry articles. A chemical, thermal, and electrical corrosion resistant composition for fusing glass to metal motor vehicle and building industry articles. A method of glass fusing metal motor vehicle and building industry articles using a chemical, thermal, and electrical corrosion resistant dry mix. A method of glass fusing metal motor vehicle and building industry articles with a chemical, thermal, and electrical corrosion resistant composition. A method of fusing single or multiple layers of glass to metal motor vehicle and building industry articles.

Abstract: The present invention provides glass compositions that can be used instead of known glass compositions containing a large amount of PbO in applications such as coating ceramic substrates, e.g., alumina, or sealing fluorescent tubes or the like. The invention also provides glass forming materials containing the glass compositions as a primary component for glass formation. Glass compositions provided by the present invention are comprises essentially of primary oxide components. The primary oxide components include ZnO, B2O3 and P2O5 as essential components and Al2O3, MgO, CaO and BaO as optional components. The amount of the primary oxide components is 85 wt % or more (preferably 90 wt % or more) of the total weight of the glass composition. Typically, the primary oxide components include 45 to 80% of ZnO, 5 to 45% of B2O3, 1 to 35% of P2O5, 0 to 10% of Al2O3, 0 to 15% of MgO, 0 to 10% of CaO, and 0 to 5% of BaO.

Abstract: A chemical, thermal, and electrical corrosion resistant dry mix for use in fusing glass to metal motor vehicle and building industry articles. A chemical, thermal, and electrical corrosion resistant composition for fusing glass to metal motor vehicle and building industry articles. A method of glass fusing metal motor vehicle and building industry articles using a chemical, thermal, and electrical corrosion resistant dry mix. A method of glass fusing metal motor vehicle and building industry articles with a chemical, thermal, and electrical corrosion resistant composition. A method of fusing single or multiple layers of glass to metal motor vehicle and building industry articles.

Abstract: Paste compositions for forming ceramic composites can include at least one solvent; at least one optional binder; at least one low-temperature frit glass; and a plurality of one or more functional particles; wherein the paste is capable of forming a composite upon low-temperature processing or laser processing.

Abstract: A ceramic color composition comprising, as represented by mass percentage, from 60 to 85% of a low melting point glass powder, from 15 to 40% of a heat-resistant pigment powder, from 0 to 15% of heat-resistant whiskers, and from 0 to 15% of a refractory powder, wherein Fe3O4: 1 to 35%, MnO2: 1 to 24%, Cr2O3+CuO≧1%, and Cr2O3/8.5+CuO/23+NiO/3.3+CoO/0.71+V2O/56+Se/0.45≦1%.

Abstract: Inorganic powder as a plasma display panel material comprises a powdery material containing glass powder. The powdery material has a moisture content adjusted to fall within a range between 0.1 and 2 mass %. The powdery material may include the glass powder alone or may further comprise ceramics powder in addition to the glass powder. The inorganic powder may be used as a paste or a green sheet.

Abstract: The invention refers to an enamel composition for producing reflecting dielectric layers in plasma display panels, comprising as layer forming constituents 70 to 97% by wt. of a glass frit composition and 3 to 30% by wt. of a particulate whitening material. The whitening material comprises one or more thermally deactivated white pigments, which have been made by a process comprising heating of at least one white pigment in the absence or presence of a glass frit having a softening temperature of less than 600° C. at a temperature of 600 to 1000° C. for 0,1 to 10 hours. The invention further refers to a method for improving the wettability of white pigments by the above said thermal treatment. The enamel is used for producing a reflecting white dielectric layer in plasma display panels.

Abstract: Opaque porcelains for use with metal cores in the manufacture of PFM restorations. The porcelains exhibit a coefficient of thermal expansion (CTE) substantially equal to or slightly above the CTE of the metal to which it is applied. The porcelains exhibit a CTE equal to or up to about 1.5×10−6/° C. higher than the dental alloys to which they are applied as the opaque. The porcelains are fabricated from a mixture of two frit compositions. A high expansion, leucite containing frit is combined with a low melting glass frit to provide a porcelain having an expansion in the range of 16.9 to about 18.5×10−6/° C. in the temperature range of 250°-600° C.

Abstract: A black pigment substantially free of objectionable transition metal materials is disclosed. This pigment is particularly useful for coloring glass since the absence of the transition metal gives it excellent recycling properties. The pigment is an alkaline earth (preferably strontium) iron maganese oxide material as specifically defined the in the present invention.

Abstract: A spark plug retains a resistor and has formed on alumina-based insulator a glaze layer, in which the glaze layer contains Pb component in a content of 1 mol % or less in terms of PbO, contains Si component, B component, Zn component, Al component, Ba component and/or Sr component, and contains F component in a content of 1 mol % or less. In addition, the glaze layer contains one kind or more of alkaline metal components, with Li component being necessary, and further contains one kind or more of phosphate ion, sulfate ion, fluoride ion and chloride ion in a content of 0.5 to 10 mol %. The glaze layer has a Vickers hardness Hv of 100 or more, shows excellent strength, especially impact resistance in spite of a reduced content of Pb component.

Abstract: In a PDP barrier ribs material comprising glass powder and silica-based filler powder, the silica-based filler powder comprises fused silica powder and &agr;-quartz powder. At least a part of the silica-based filler powder is spherical filler powder. The remaining part of the silica-based filler powder may be aspherical filler powder. In this case, the ratio of the spherical filler powder and the aspherical filler powder may be 30:70 to 100:0 in mass ratio.

Abstract: The present invention relates to a color cathode ray tube and a glass frit to be used for it, and provides a color cathode ray tube which uses a glass frit containing as a crystallizing filler, an &agr;-4PbO.B2O3 crystal powder and/or a Pb3O4 crystal powder, and corpuscular &agr;-alumina, and at least one member selected from the group consisting of MgO, Fe2O3 and monoclinic ZrO2, for improvement of the strength at a sealed portion and for weight saving of the color cathode ray tube, wherein the maximum tensile stress generated at the above sealed portion is from 7 to 10 MPa when the inside is vacuumized, and the area ratio of crystal is at least 50% at the interface at the above sealed portion at at least the region at which the above maximum tensile stress is generated.

Abstract: A spray glaze or opaque composition for coating dental restorations and other surfaces and objects such as hobby ceramics that comprises about 4 to about 50 weight % glaze material, about 5 to about 60 weight % restoration wetting agent, and about 10 to about 90% non CFC propellant. An opaque composition further comprises about 5 to about 30% opaque material.

Abstract: A pressable glass ceramic which contains lithium silicate glass and leucite is disclosed. Also, disclosed is the combination of leucite and a lithium silicate glass to stably increase the coefficients of thermal expansion of the resulting glass composition, and the preparation of leucite suitable for addition to the glass composition. Also disclosed are methods for fabricating glass ceramic and dental products from the pressable glass ceramic.

Abstract: A glass ceramic, for use as a resistor or a gas-tight glass ceramic solder for use in a spark plug, includes a fused seal of a starting glass fused from a starting mixture containing SiO2, Al2O3, TiO2 and CaO, the fused seal including crystalline phases in at least some areas. A method for producing such a glass ceramic provides for the starting glass to be processed in a first method step to form a starting material, which is heated for a first period of time in a second method step from a starting temperature, which is below the softening temperature of the starting glass, to a fusion temperature, which is above the softening temperature of the starting glass, and is kept at that temperature for a second period of time and finally is cooled again. A spark plug may include a terminal stud and a center electrode, which are electrically connected across a resistor that is formed in at least some areas by the glass ceramic.

Abstract: A glass or glass powder is fused from a starting mixture containing approximately 38 wt % to 48 wt % SO2, 15 wt % to 19 wt % Al2O3, 4.5 wt % to 11 wt % TiO2, 0 wt % to 1.5 wt % Na2O, 0 wt % to 1.5 wt % K2O and 23 wt % to 30 wt % CaO. In addition, a glass powder mixture includes two glass powders, a carbon black powder and an organic binder, the first glass powder having a mean particle size of approximately 150 &mgr;m to 250 &mgr;m, the second glass powder having a mean particle size of less than approximately 100 &mgr;m, which may be 10 &mgr;m to 70 &mgr;m. The glass or glass powder mixture is suitable for producing a glass ceramic, such as that used as a resistor seal and/or a gas-tight glass ceramic solder in a spark plug.

Abstract: The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2—SiO2—MeIIO, or (II) SiO2—MeIIIO2—MeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Abstract: Micaceous glass-ceramics are useful in the fabrication of single and multi-unit dental restorations including but not limited to orthodontic appliances, bridges, space maintainers, tooth replacement appliances, splints, crowns, partial crowns, dentures, posts, teeth, jackets, inlays, onlays, facing, veneers, facets, implants, abutments, cylinders, and connectors by machining the glass-ceramic using CAM/CAM devices. The micaceous glass-ceramics are provided in a plurality of shades and colors to adequately match the colors and shades of teeth found in 95% or more of the human population.

Abstract: Low temperature melting lead-free glass and enamel compositions are provided which have low boron content and possess high durability properties. Enamel pastes containing frits of the glass compositions are particularly useful in forming colored borders in automotive glass.

Abstract: The invention relates to glass ionomer for enhancing mineralization of hard tissue of mammals. The glass ionomer comprises, a inert biocompatible ceramic and a bioactive ceramic. The invention also relates to a method for enhancing mineralization of hard tissue of mammals with the aid of said glass ionomer. The invention further relates to the use of said glass ionomer for the preparation of products intended for treatment of defects of soft and hard tissue as well as the use of said glass ionomer for the preparation of a variety of products wherein the ability to enhance mineralization is advantageous.

Abstract: A sealing material for electric parts containing a lead-free tin silicate-phosphate glass of 50-100 volume percents and refractory fillers of the balance. The lead free tin silicate-phosphate glass consists essentially of, by molecular percent, 30-80% SnO, 5.5-20% SiO2, and 10-50% P2O5. The glass may contain at least one of glass stabilizing elements, said glass stabilizing elements including 3-25% ZnO, 0-4.9% B2O3, 0-5% Al2O3, 0-10% WO3, 0-10% MoO3, 0-10% Nb2O5, 0-10% TiO2, 0-10% ZrO2, 0-15% R2O (R is Li, Na, K, and/or Cs), 0-5% CuO, 0-5% MnO, 0-10% R′O (R′ is Mg, Ca, Sr and/or Ba), a total content of at least one of the glass stabilizing elements being up to 40%.

Abstract: The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2—SiO2—MeIIO, or (II) SiO2—MeIIIO2—MeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.

Abstract: Objects of the present invention are:

Abstract: A composition of a dielectric for a plasma display panel in use for fabricating a barrier rib having a low sintering temperature, a low coefficient of thermal expansion, a low dielectric constant and a high withstand voltage. The composition of a dielectric for a plasma display panel comprising a parents glass powder containing 20˜40 wt % of ZnO, 15˜30 wt % of SiO2, 10˜20 wt % of B2O3, 0˜30 wt % of PbO, 0˜20 wt % of MgO, 1˜10 wt % of CaO, 1˜10 wt % of Al2O3, 0˜10 wt % of K2O, 0˜8 wt % of Na2O, 0˜5 wt % of Li2O, 0˜2 wt % of Sb2O3, and 0˜2 wt % of As2O3.

Abstract: In a composition for use in formation of barrier ribs in a plasma display panel, comprising glass powder, the glass powder is powder of PbO free and alkali metal oxide free glass which consists essentially of, by molecular percent, 5-40% BaO, 20-55% ZnO, 15-50% B2O3, 0-25% SiO2. The glass has a softening point of 630° C. or less. Ceramics powder is mixed with the glass powder. The composition can also be provided in a form of paste, alternatively in a form of a green sheet.

Abstract: The present invention provides a ceramic color composition which comprises, as a solid powder, 50 to 90 wt. % of a mixture containing 5 to 95 parts by weight of a first lead-free glass powder comprising at least SiO2, ZnO, and B2O3 as glass components, and 5 to 95 parts by weight of a second lead-free glass powder comprising at least SiO2, Bi2O3, and B2O3 as glass components, 10 to 40 wt. % of an inorganic pigment, and 0 to 10 wt. %0 of an inorganic filler.

Abstract: A CRT frit for use in sealing a panel and a funnel of a CRT bulb comprises non-crystallizing glass powder and refractory filler powder. The non-crystallizing glass powder consists essentially of, by weight percent, 75-90% PbO, 7-20% B2O3, 0-8% ZnO, 0-5% SiO2, and 0.1-8% Al2O3+Fe3O3. The mixing ratio of the non-crystallizing glass powder and the refractory filler powder is within a range between 95:5 and 55:45 in weight ratio. The coefficient of thermal expansion at a temperature between 30 and 250° C. is within a range between 80 and 90×10−7/° C.

Abstract: The present invention provides a composition for use in forming a white porcelain enamel coating on aluminized or galvanized steel. The composition according to the present invention includes a solids portion including a glass component and a white pigment. The glass component includes one or more glass frits including by weight from about 30% to 50% P2O5, from about 15% to about 30% Al2O3, from about 8% to about 40% X2O where X=Na and/or K, up to about 30% TiO2, up to about 12% B2O3, up to about 10% K2O, up to about 10% ZnO, up to about 8% SiO2, up to about 7% La2O3, up to about 5% Li2O, and up to about 15% F. The white pigment include TiO2.

Abstract: In a PDP barrier ribs material comprising glass powder and silica-based filler powder, the silica-based filler powder comprises fused silica powder and &agr;-quartz powder. At least a part of the silica-based filler powder is spherical filler powder. The remaining part of the silica-based filler powder may be aspherical filler powder. In this case, the ratio of the spherical filler powder and the aspherical filler powder may be 30:70 to 100:0 in mass ratio.

Abstract: A lead-free glow in the dark glaze is provided for ceramic bisques. It includes Frit, Lithium Carbonate, Borax, carboxmethylceullulose and a phosphorus pigment. In some applications, Bentonite and/or Magnesium Sulfate are used. Preservatives and deflocculants may be needed in some applications.

Abstract: Glass composition for use as sealing material in fuel cells, comprising a glass matrix with main components consisting of SiO2, Al2O3, and one or more compounds from group I metal oxides and/or group II metal oxides, and a filler material evenly dispersed in the matrix, wherein the filler material consists of particles of one or more refractive compounds from the group: MgO—MgAl2O4, stabilized zirconia, rare earth oxides, (Mg,Ca)SiO3, Mg2SiO4, MgSiO3, CaSiO3, CaZrO3, ThO2, TiO2, MIIAlSi2O8, where MII=Ca, Sr or Ba.

Abstract: A chemical, thermal, and electrical corrosion resistant dry mix for use in fusing glass to metal motor vehicle and building industry articles. A chemical, thermal, and electrical corrosion resistant composition for fusing glass to metal motor vehicle and building industry articles. A method of glass fusing metal motor vehicle and building industry articles using a chemical, thermal, and electrical corrosion resistant dry mix. A method of glass fusing metal motor vehicle and building industry articles with a chemical, thermal, and electrical corrosion resistant composition. A method of fusing single or multiple layers of glass to metal motor vehicle and building industry articles.