Free metal containing

Electrically conducting adhesive composition comprising crosslinked alkyl acrylate and/or alkyl methacrylate polymer, specially prepared electrically clean silver particles, and a suspending or thickening agent such as silica of large surface area dispersed in a low-boiling solvent system.

A product comprising a soft elastic base material and an electroconductive film formed on the base material by applying a coating composition to the base material and fixing the composition by an insolubilizing treatment such as irradiation with light, heating or the like, the composition comprising...     

For the introduction of an alkali metal vapour into an electric discharge tube, in particular for the vapour deposition of surfaces for photo-emission or secondary electron emission in such a tube, generators are used which comprise a filling which consists of at least one alkali metal alloyed with gold...     

Hard, refractory bodies having electrical conductivity are made by mixing powdered boron and glass-forming material, and heating the mixture at high temperature to effect coalescence. Desirably, chromium, molybdenum or tungsten may be used in addition to boron to impart electrical conductivity to the...     

An electrical contact material consisting essentially of a highly conductive metal such as gold or silver, a refractory constituent such as tungsten, molybdenum, tantalum, titanium, their carbides, or mixtures thereof and a bonding constituent of at least two metals that form an alloy selected from the...     

A radiation curable ink is provided which is convertible to a conductive coating when cured on the surface of a substrate. When used as a printing ink, improved results are achieved if a minor amount of a blend of paraffin waxes is employed to control solvent evaporation.

Thermoplastic synthetic polymer fibers having powder of metal attached to the surface of the fibers are subjected to a treatment for increasing the oxidation number of said metal from zero to a plus value, that is, oxidation in a broad sense. The resulting conductive synthetic fibers support a layer...     

A radiation curable ink is provided which is convertible to a conductive coating when cured on the surface of a substrate. A particulated electrically conductive metal containing material is used in combination with an organic resin binder. Low temperature cure of the ink can be achieved with either...     

A multiple flashlamp array having a plurality of lamps fired individually and in sequence which includes a plurality of static solid switching devices capable of being easily activated by radiant energy generated during flashing of the lamps. Initially, the switches have a high resistance ("off position")...     

An overtemperature and overcurrent resistor fuse has a resistor body with finely divided conducting powder and silica powder dispersed in an organic flux and resin. The conducting powder has a melting temperature in the range from 60.degree.C to 350.degree. C. This overtemperature and overcurrent resistor...     

Conductive polymer having a steeply-sloped positive temperature coefficient (PTC) of resistance with a sharply defined anomaly temperature is provided by selecting a polymer having crystalline structure at room temperature, a glass transition of approximately 13.degree.F. or lower and a narrow molecular...     

An electrically conductive resinous composition of a copper flake, the surface of which has been cleaned by removing therefrom impurities and/or oxides, a resinous binder, an amount of copper flake in said resinous composition being from 25 to 70 percent, the impurities in said copper flake being less...     

A radiation curable ink is provided which is convertible to a conductive coating when cured on the surface of a substrate. A non-ionic surfactant is used in the curable ink in combination with a particulated metal containing conductive filler and an organic resin binder. As a result of using the non-ionic...     

Electrical resistor inks comprising a mixture of at least one semi-conducting pyropolymeric inorganic refractory oxide material and a vehicle consisting of a binder such as a synthetic resin or a varnish, and a suitable solvent or oil, etc., are useful in forming resistors in electrical circuits, especially...     

An antistatic surfacing material comprises a curable synthetic resin, such as a polyepoxide, polyester or polyurethane, and 1-20g, per liter of total composition, of metal fibers having a length of 1.5-10 mm and an average diameter of at most 25.mu.m. The use of such very fine fibers in short lengths...     

Electrodes for a discharge lamp having a semispherical fused body to produce a very stable arc. The electrodes can be manufactured inter alia by compressing a mixture of tungsten powder, metal carbide powder and a binder to a moulding, sintering the moulding, and fusing it then at least partly in a discharge...     

A high temperature anticorrosive molded product produced by hot pressing a mixture comprising 1-10 weight parts of powdery aluminum and 100 weight parts of a powdery composition comprising an electric conductive refractory, boron nitride and aluminum nitride wherein said powdery composition is encompassed...     

Composite materials having properties of superconductivity which remain at much higher temperatures than conventional superconductors and intended for such applications as the construction of magnetometers or thermometers are provided in a divided form and in a monocrystalline matrix consisting of semiconducting...     

Pressure-sensitive compositions adaptable for use as elastic resistors over a wide pressure range, useful as keyboard switches or vehicle-crash sensors, comprising hard, metallic-conductive particles insulatively distributed in elastomer.

A thick-layer conductor path paste consisting of a suspension of a powder mixture containing metals and fritted glass in an organic carrier medium. Also, methods for making conductor paths and the paths so made.

A protective cover layer is provided for the basis metal of an electrolytic anode, particularly for anodes used in the production of chlorine and caustic soda. The cover layer comprises a non-stoichiometric compound having the empirical formula: M.sub.n Pt.sub.3 O.sub.4 where M is lithium, sodium, potassium,...     

Anisotropic polymer material which conducts electricity consists of a filler which conducts electricity and a polymer binder. Perchlorovinyl resin or a mixture of perchlorovinyl resin with phenylaminomethyl-methyldiethoxysilane can be used as the binder.

A material is described which is useful in electrical current switching devices and is especially adapted to form the contact surface of the electrodes of electrical current switching devices which are employed in a vacuum environment. The contact material comprises a major component which is characterized...     

An electrically conductive product generally comprised of a substrate or web coated with or impregnated with an electrically conductive thermally stable material which includes a special polymeric binder and conductive particles to produce the final conductive sheet.

Semiconductor material consists of polyvinyldimethylsiloxane rubber, filler material conducting electricity, and a curing agent. Said curing agent is dialkylaminomethyltrialkoxysilane. The components of the proposed material are taken in the following proportion, in part by weight: Polyvinyldimethylsiloxane...     

Ceramics having nonlinear voltage characteristics in which (1) zinc oxide is used as a main component and (2) praseodymium, (3) one or more of magnesium or calcium, and (4) cobalt are added thereto as subcomponents, in elemental form or as a compound thereof, in an amount of from about 0.08 to about...     

Disclosed herein are powder compositions useful for making conductors, e.g., microcircuit conductors, end terminations for capacitors, electrodes for gas discharge display devices, etc. The compositions comprise inorganic powders dispersed in an inert vehicle and are printed and fired in the conventional...     

Copper-based metallizations, useful in the electronics art, comprising copper powder and certain alkali metal/lead borosilicate glass powders. The copper and glass may be dispersed in an inert liquid vehicle, printed on a substrate, and fired in a nitrogen atmosphere to produce conductor patterns. Also...     

A method of making a copper thick film conductor paste which includes the step of preoxidizing a controlled amount of the copper powder particles. A copper thick film conductor paste, and an electrical conductor element and a method of making it from the paste.

Conductive metal pigments which may be used in electrical devices are prepared by forming an alloy of a non-noble conductive metal and at least one oxidizable material, mixing the resulting alloy with a vitreous frit and an organic vehicle to form an ink, screening said ink onto a substrate, firing the...     

A directly heated oxide cathode comprises a base metal of alloy containing Ni as a host material, an electron emissionable oxide of alkaline earth metal deposited on the base metal, and powders of metal selected from Ni sample substance, Co simple substance, Ni-Co alloy, alloy containing Ni, Ni-Co, or...     

An electrolyte for a bio-electric event measuring electrode combines a salt with adhesive. The adhesive serves as the vehicle for dispersing solvent to form the electrolyte in a solid or semisolid mixture. The adhesive serves further as a structural element in holding the parts of a practical electrode...     

Non-linear resistors for use as protective devices in electronic circuits. Compositions and methods are disclosed which enable the fabrication of non-linear resistors compatible with other electronic devices in monolithic form. The non-linear resistors disclosed also offer improvements over prior art...     

A soft, conformable, conductive composition comprises a polymeric binder system; a purality of insoluble, soft, spherical, deformable, generally nonreactive domains dispersed in the system interjacent the domains, held in the matrix thereof, such that at least one electrically conductive pathway is formed...     

An ignition aid for internal combustion engines includes a sintered refractory ceramic composite heating element having a high resistance central portion interposed between a low resistance terminal end portions. The heating element is positioned in a hollow electrically conductive body adapted to be...     

The electroconductive composite ceramics composed of an independent phase conglomerates having a particle diameter of at least 20.mu. and a continuous phase connecting mutually the independent phase of conglomerates. Particularly, electroconductive composite ceramics composed of (A) 50-98% by weight...     

Process for producing conductive cured products are disclosed. In one embodiment a copper compound is reacted with a reducing substance capable of reducing said copper compound to metallic copper, in the presence of a metallic copper powder on a substrate, thereby reducing the copper compound to metallic...     

A paste for forming a thick film conductor of a base metal on a non-conductive substrate comprises a base metal powder (particularly nickel) which ordinarily would oxidize when fired in air, boron powder and a vehicle. In one embodiment, the paste may also contain glass frit. By proper selection of the...     

In a photovoltaic cell which comprises: a substrate, a bottom electrode, a first layer of cadmium sulfide, a second layer of cuprous sulfide forming a barrier junction with said first layer and a top electrode, the improvement wherein said substrate is an insulative ceramic material and the bottom electrode...     

A ceramic-metal composite suitable for use in a high-temperature environment consists of a refractory ceramic matrix containing 10 to 50 volume percent of a continuous high-temperature metal reinforcement. In a specific application of the composite, as an electrode in a magnetohydrodynamic generator,...     

The invention relates to adhesive compositions comprising vinyl containing organopolysiloxanes, organopolysiloxanes having Si-bonded hydrogen atoms and catalysts which promote the addition of the Si-bonded hydrogen atoms to the vinyl groups. These adhesives may be combined with other electrically conductive...     

Novel powders, and resinous compositions bearing said powders, characterized by excellent chemical stability, electrical conductivity, and energy-absorbing characteristics. These three characteristics can be utilized, alone or combination, in forming many novel articles including microwave shielding...     

An improved pressure-sensitive resistance element is provided which is composed of an electrically non-conductive matrix of a rubbery elastomer and electrically conductive particles dispersed therethrough to have a gradient of distribution from one side to the other of the matrix. Such resistance elements...     

This invention relates to electrically conductive foam moulding manufactures from electrically conductive polystyrene beads containing blowing agent.

Weldable coatings containing, an electro-conductive pigment such as zinc, an epoxy resin binder and solvent are improved by employing as the epoxy resin binder, the reaction product of a relatively low molecular weight epoxy resin such as the diglycidyl ether of bisphenol A and an amine compound having...     

A thermal printing head having a substrate and a resistive element formed on the substrate wherein said resistive element is a thin layer which is composed of an electrically conducting material and an electrically insulating material. This thermal printing head has a high heat-resistivity, so that it...     

A capacitor having electrodes consisting essentially of 65-95 parts tin and 35-5 parts zinc.

A method of making electrical connections between large-scale integrated cuit boards or the like using a plastic adhesive charged with conductive particles. The method includes the steps of: coating one board with the adhesive, placing another board on the adhesive coating, applying a field to make the...     

An innate catalytically-active electrode, especially well suited for the electroreduction of oxygen in alkaline media, is comprised at least partially of a substantial proportion of a metal phthalocyanine in dry powder form compounded in intimate mixture with a finely comminutated, particulate metal...     

An improvement in a weldable coating for metallic substrates containing a high molecular weight epoxy or phenoxy resin, an electroconductive pigment such as zinc and a diluent such as a glycol ether wherein the improvement resides in replacing at least about 70 weight percent of said resin with a composition...     

A method of improving the physical characteristics of a conductor paste includes the step of adding ZnO in an amount sufficient to achieve about 1% to 3%, by weight, of the total. Where the conductor paste is adapted to be fired at 850.degree. C., ZnO is added in an amount sufficient to achieve about...     

Electroluminescent device for emitting green light comprising a conducting cadmium fluoride crystal of electron concentration greater than 10.sup.15 cm.sup.-3 having a manganese impurity of N.sub.Mn concentration in the range: 0.1 mole percent <N.sub.Mn <5% mole percent, and an insulating or semi-insulating...     

For the introduction of an alkali metal vapor into an electron discharge lamp or an electron discharge tube, in particular for the vapor deposition of surfaces for photo-emission or secondary electron emission in such a tube, generators are used with a filling which comprises at least one alkali metal...     

Electrically conductive articles which comprise a non-conductive matrix containing an electrically conductive dispersion of finely divided ferroalloy, silicon alloy, or mixtures thereof, are described. Compositions for making the articles utilizing various non-conductive materials, e.g., plastics, ceramics,...     

The present invention relates to an electrical joint compound for use in tubular compression connectors generally of aluminum or copper, and is particularly useful for joining large, stranded or solid, underground, electrical power cable and terminations of cable in high-voltage potheads. The electrical...     

An electrically conductive resinous composition is prepared by cleaning the surface of copper flakes, mixing from about 25 to 75 percent by weight copper flakes with a resinous composition containing a curative selected from the group consisting of a dicyandiamide, a boron trifluoride releasing complex,...     

Air-fireable thick film conductor compositions are provided. The conductor composition is a paste containing (1) an inorganic powder made from an intermetallic phase copper-aluminum powder, aluminum powder and a glass frit and (2) an inert organic liquid vehicle.

The invention provides a novel gasket for electric shielding composed of an electrically insulating rubbery elastic material as the continuum or matrix and a conductive phase dispersed therein. Different from conventional gaskets for electric shielding in which conductive filaments or particles form...     

The method of providing a mechanically strong, hermetic seal, for sealing glass-ceramic articles particularly MACOR.RTM. brand machinable glass-ceramics, which seal is capable of withstanding heating in a vacuum to a temperature of up to 900.degree. C. without foaming. The forming of the seal comprises...     

A pressure sensitive conductor consists essentially of (I) an electrically insulating rubber (excluding addition reaction type liquid silicone rubber), (II) 25 to 50% by volume of electrically conductive metal particles (preferably 40 to 200.mu. in particle size) and (III) 5 to 20% by volume of carbon...     

An oxide-coated cathode for electron tubes comprising a base metal plate made of an alloy containing nickel as a major component and at least one high-melting point metal in an amount of 2% by weight or more, and if required, a small amount of one or more reducing elements, and an electron emissive alkaline...     

A glaze resistor composition composed of a glass frit, molybdenum disilicide, tantalum disilicide, magnesium silicide and aluminum. This glaze resistor composition has a small temperature coefficient of resistivity, a high resistivity stability and small current noises, and can be used in a wide resistivity...     

Nickel powders having an improved chemical stability are formed by reaction with an electroconductive coating such as a carbide, a silicide, or the like and, also, a reaction with sulfur.

An electrically conducting cermet comprises a sintered compact of refractory oxide granules such as alumina granules having diameters of from 50 to 800 microns and a conductive network extending through the cermet and provided by a layer of one or more of titanium, zirconium, hafnium, vanadium, niobium,...     

An improved method of manufacturing electrical and electronic circuits is provided wherein an improved conductive ink is employed to define the pathways of current flow. This improved conductive ink is comprised of conductive particles, thermosetting binder and a multifunctional isocyanate. The isocyanate...     

The invention provides a novel composition capable of giving an electrically conductive, flexible shaped body having stability in the applied voltage vs. current performance. The composition comprises an electrically insulating polymeric material having flexibility such as a diorganopolysiloxane, a finely...     

Conductor compositions comprising an admixture of finely divided particles of (a) silicon dispersed in a matrix of aluminum and (b) glass.

A zinc-rich coating for use on metallic substrates contains particulate zinc, thermoplastic polyhydroxyether and zinc phosphosilicate.

Screen-printable conductor composition comprising (a) a conductive phase containing silver and base metal powders dispersed in a solution of (b) a multipolymer prepared by copolymerization of vinyl acetate, vinyl chloride, and an ethylenically unsaturated dicarboxylic acid and a linear aromatic polyester...     

A relative humidity sensitive material comprises a mixture of at least one hygroscopic salt and an at least partially electrically conductive metal based powder. Each salt in the relative humidity sensitive material has a cationic constituent selected from the group consisting of the alkali and alkaline...     

An inert type electrode composition suitable for use in the electrolytic production of metals such as aluminum is disclosed. The aluminum is produced from an aluminum-containing material dissolved in a molten salt. The electrode composition is fabricated from at least two metals or metal compounds combined...     

Disclosed is an inert electrode composition suitable for use in the electrolytic production of metal from a metal compound dissolved in a molten salt. The electrode comprises a ceramic oxide composition and at least one metal powder dispersed through the ceramic oxide composition for purposes of increasing...     

An electrically conductive polymer, doped with at least one electron acceptor or electron donor, which polymer has a main chain of arylene units and interspersed regularly or irregularly between them one or more chalcogen atoms or groups of such atoms, especially sulfur and/or oxygen atoms; especially...     

Improved conductor inks useful in constructing multilayer circuits, particularly on porcelain-coated metal substrates, are provided. The subject inks comprise: copper powder, a barium calcium borosilicate glass frit, a suitable organic vehicle and bismuth oxide, which is present either in admixture with...     

An electrical resistor family based on oxides of tungsten and/or molybdenum is prepared by combining a polymeric binder with such oxides in an appropriate amount to realize the desired bulk properties. The resistance of the composite can be varied by varying the metal content of the oxides and/or by...     

Improved resistor inks useful in constructing multilayer integrated circuits, particularly on porcelain-coated metal substrates, are provided. The subject inks comprise: a conductive component consisting of stannous oxide and molybdenum trioxide or a mixture of molybdenum trioxide and metallic molybdenum;...     

A voltage non-linear resistance ceramics having a larger voltage non-linear coefficient and a superior protection ability against the overvoltage is prepared by firing an essential component of zinc oxide added with the accessary components of one or more elements in the form of elements or compounds....     

Conductive cured products which have superior initial conductivity which is substantially retained even under high temperature and humidity conditions are obtained by curing a resinous composition comprising (a) a metallic copper powder, (b) a copper compound, (c) a compound having a 1,4-dihydroxy benzene...     

Conductive pigment-coated surfaces may be prepared by alloying a nonnoble conductive metal with an oxidizable material, admixing the alloy with an organic vehicle and a binder to form an ink followed by firing the ink in an oxidizing atmosphere containing about 20% by volume of oxygen at a temperature...     

Improved thin film resistors and electrical devices and circuits with thin film resistors are fabricated utilizing a chromium, silicon, and nitrogen compound formed preferably by rf reactive sputtering of chromium and silicon in a nitrogen bearing atmosphere. An annealing step is used to produce time-stable...     

A method of forming a conductive polymer comprising a blend of at least one processable polymer, polyacetylene and a dopant by impregnating the processable polymer with a Ziegler-Natta catalyst; exposing the impregnated polymer to acetylene gas, whereby substantially linear molecules of polyacetylene...     

Disclosed herein is a conductive paste useful for making conductors, including microcircuit conductors, and terminations for capacitors, resistors and piezo-electric transducer elements. The paste comprises an inert liquid vehicle having a metal powder and a glass powder both dispersed therein and is...     

An electroconductive paste consists essentially of 100 parts by weight of zinc in finely divided form, from about 0.01 to 10.00 parts by weight of a glass frit such as, typically, that of PbO-B.sub.2 O.sub.3 -SiO.sub.2 composition, from about 0.01 to 14.99 parts by weight of an organotitanium compound...     

This invention relates to a heat curing process and to a solventless screen printable, heat curable conductive ink composition comprising (1) an ethylenically unsaturated member of the group consisting of (a) a liquid, ethylenically, unsaturated monomer, oligomer or prepolymer of the formula: ##STR1##...     

A process for the preparation of electrically conductive polymers which have conductivities greater than 10.sup.-2 S/cm and possess improved stability to oxygen, comprising treating an organic unsaturated polymer of the series of the polyphenylenes, heterophenylenes and polyacetylenes, in the absence...     

An electroconductive paste comprising (a) an electroconductive filler, (b) a reactive solvent, and (c) a hardener comprising (c-1) an epoxy resin, (c-2) a latent hardener, and (c-3) an epoxy compound-dialkylamine adduct, the percent by weight of (a), (b) and (c) being 95 to 50, 1 to 20 and 4 to 30, respectively,...     

An electrostatic recording member comprising a recording layer, an electrically conductive layer and a support, wherein the electrically conductive layer is composed of from 2 to 40 parts by weight of electrically conductive micro-fine powder dispersed in from 60 to 98 parts by weight of an organic polymer...     

A process for the preparation of stable electrically conductive polymers, having conductivities greater than 10.sup.-2 S/cm, wherein a polyacetylene is reacted with from 1 to 100, preferably from 10 to 33, % by weight of tosylmethyl isocyanide and from 0.1 to 70, preferably from 5 to 35, % by weight...     

Improved air-fireable resistor and conductor inks useful in constructing multilayer integrated circuits on porcelain-coated metal substrates are provided. The subject inks comprise a barium calcium borosilicate glass frit, a suitable organic vehicle, and a functional component, i.e., ruthenium dioxide,...     

A screen-printable thick film conductor composition for membrane switches consisting of an active phase of conductive metal powder dispersed in an organic medium consisting essentially of a linear aromatic polyester resin dissolved in volatile solvent.

An adhesive is provided which comprises a thixotropic binder (24) containing metallic particles (23) of discrete size and specific density concentration. When used to bond faying surfaces (13 and 21/10 and 21) this adhesive is capable of conducting electrical currents on the order of 200,000 amps while...     

An electrical device having a nonlinear current-voltage characteristic is described which uses TiO.sub.2, a Group IIA element such as barium, calcium and strontium in an amount greater than 0.0 and generally less than approximately 1.0 mole percent, a Group VB element such as niobium in an amount generally...     

A screenable ink for forming conductors in a gas-filled display panel including aluminum and an aluminum alloy as important constituents and a panel including such conductors as reinforcing transparent conductive films.

The breakdown voltage of a zinc oxide varistor is lowered by increasing the grain size of the zinc oxide using Al.sup.+3 as a zinc oxide grain growth promoting agent and the varistor's resistance to high energy electrical surges is increased by an grain boundary barrier layer stabilizer such as Na.sup.+,...     

This invention relates to a heat curing process and to a solventless screen printable, heat curable conductive ink composition comprising (1) an ethylenically unsaturated member of the group consisting of (a) a liquid, ethylenically, unsaturated monomer, oligomer or prepolymer of the formula: ##STR1##...     

Conductor composition comprising an admixture of finely divided particles of (a) conductive metal, (b) inorganic binder and (c) a colorant which is a mixture of silver oxide and/or copper oxide or precursor thereof and B.sub.2 O.sub.3.

Silicon carbide material retains the hardness, wear and heat resistance properties and can be rendered conductive by the incorporation of an element of the same valence as silicon and carbon in quantities in the range of 0.01% to 0.03%. Germanium in this range in SiC is conductive. The material is very...     

Low value resistor inks comprising a conductive component consisting of stannous oxide and molybdenum trioxide or a mixture of molybdenum trioxide and metallic molybdenum; a glass powder selected from the group consisting of a barium aluminum borate glass and a barium calcium borosilicate glass; and...     

Disclosed is a resistor made of an alloy consisting essentially of Cr, Si and SiO.

Thermoplastic compositions comprising a polycarbonate resin, a graft copolymer and conductive particles are provided suitable for the preparation of molded articles characterized in that they provide an improved level of EMI shielding.