Abstract: A high temperature resistant colored enamel wire comprises a metal conductive wire and at least one colored coating layer outside the wire, the at least one colored coating layer is provided by a coating composition comprising (a) a synthetic resin, (b) an organic solvent and (c) an inorganic pigment. In addition to having good appearance and uniform color, the high temperature resistant colored enamel wire can provide the temperature resistance and insulation properties meeting the requirements of the art.

Abstract: A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor. An essentially continuous and concentric and uniform pulsed voltage surge shield overlaying the coat of base insulation material. The shield has therein an effective amount of a particulate material. The shield is superimposed on the coat of base insulation material, and has a continuous and concentric and flexible and uniform top coat of insulation material superimposed thereon.

Abstract: A fire-resistant polyvinyl chloride (PVC) formulation suitable for use as sheathing on electric wires and cables, contains 15-60 parts by weight per 100 parts by weight of PVC (phr) of a phosphate plasticize, 10-40 phr of a halogenated plasticize, 15-60 phr of aluminium trihydroxide, together with 5-20 phr of an additive combination of 10-90 wt% ofr antimony trioxide and 90-10 wt% of zinc stannate.

Abstract: A heat-resistant combination including a substrate, a first layer, and a second layer. The first layer includes a benzisidazole-based polymer with a first face in contact with the substrate; and the second layer contains a ceramic material and is securely fixed to a second face of said first layer.

Abstract: A cable comprising one or more electrical conductors or communications media, or a core of two or more electrical conductors or communications media, each electrical conductor, communications medium, or core being surrounded by a composition, which is essentially halogen and antimony free, comprising:(a) a copolymer of ethylene and an unsaturated ester comonomer selected from the group consisting of:(i) an alkyl acrylate;(ii) an alkyl methacrylate; and(iii) a vinyl carboxylatewherein (A) the alkyl group has 1 to 8 carbon atoms and the carboxylate group has 2 to 8 carbon atoms;(B) the copolymer is, optionally, modified with an anhydride of an unsaturated aliphatic diacid having 4 to 20 carbon atoms;(C) the copolymer has an ester content in the range of about 5 to about 50 percent based on the weight of the copolymer and a melt index in the range of about 0.

Abstract: A heat-resistant coated electrically conductive wire, comprising an electrically conductive wire coated with an insulating coating. The insulating coating is obtained by forming a coating of a thermoplastic resin containing aromatic rings or complex rings on the electrically conductive wire, and then by subjecting the insulating coating to irradiation with an accelerated ion beam having an energy at least 0.1 MeV, thereby cross-linking the resin.As the thermoplastic resins, polyetherimide, polysulfone, polyamide, polyallylate, polycarbonate, polyphenylene oxide, and the like can be used.

Abstract: A ceramic insulated wire has a conductor core of copper or copper alloy, a stainless steel layer around the conductor core and a chromium oxide film (2A) around the stainless steel layer. The chromium oxide film (2A) is surrounded by an outer ceramic insulator formed by a vapor deposition method. Cladding the conductor core with stainless steel is done by inserting the core lengthwise into a stainless steel pipe, plastically working the resulting composite body to provide a desired size, and oxidizing the stainless steel which contains sufficient chromium for the formation of the chromium oxide film to have a thickness within the range of 10 nm to 1000 nm. The outer ceramic insulator formed by vapor deposition is made of Al.sub.2 O.sub.3, SiO.sub.2, AlN and Si.sub.3 N.sub.4 which provide an excellent heat resistance while the chromium oxide film substantially increases the bonding strength.

Abstract: A heat and oxidation resistant electrically conductive composite conductor has a core (1) made of copper or a copper alloy, an electrically conductive ceramics layer (2) around the core (1), and a nickel layer (3) on the exterior of the electrically conductive ceramics layer (2). Such a conductor is produced by coating the outer surface of the core copper alloy binder and covering the coated core with a nickel tape under an atmosphere of an inert gas or a reducing gas, welding the seam of the tape, clading the so formed conductor by a cladding die, and drawing the clad conductor. The composite conductor has a high conductivity which is not reduced even when the conductor is exposed to a high temperature operating condition.

Abstract: An insulated electrical conductor wire has a conductor core containing Ni or Ni alloy at least in its outer surface, an oxide layer of Ni or Ni alloy formed by oxidation treatment of the outer surface of the conductor, and an insulating inorganic compound outer layer formed on the oxide layer of Ni or Ni alloy. The insulating inorganic outer layer is intimately bonded to the oxide layer and provides an improved heat resistance and insulability.

Abstract: An insulated wire is suitable for use as a distribution wire, a wire for winding a coil or the like, which is used in a high-vacuum environment or in a high-temperature environment such as a high vacuum apparatus or a high temperature service apparatus. The insulated wire has a base material (1) forming a substrate, a chromium oxide CrO.sub.3-x containing intermediate layer (2) on the substrate, and an oxide insulating layer (3) on the intermediate layer. The base material (1) is an electrical conductor. The chromium oxide containing layer (2) is so formed that the ratio of oxygen to chromium O/Cr is not less than 0.5 but less than 1.5 to avoid the formation of chromic oxide Cr.sub.2 O.sub.3 which reduces the adhesive bonding strength. The oxide insulating layer (3) is formed by applying a precursor solution of a metallic oxide onto the chromium oxide containing layer (2) by a sol-gel method or an organic acid salt pyrolytic method.

Abstract: An insulated wire has a conductor, a first insulating metal oxide layer which is formed around the conductor, and a second insulating metal oxide layer, containing ceramic particles mixed by addition and formed around the first insulating metal oxide layer. The so formed insulating metal oxide layers are produced by changing a precursor of a metal oxide into the ceramic state. This change is caused by a method such as a sol-gel method or a thermal decomposition method. The mixed ceramic particles are more preferably in the form of fine platelets. This insulated wire has an excellent flexibility, emits no gas, can maintain its insulation even at a high temperature, and has a high breakdown voltage.

Abstract: In a coaxial electrical high-frequency cable, a spacer is provided between the internal conductor and the external conductor in order to maintain the operation of the cable even in the case of elevated ambient temperatures. The spacer can be a helical profile or of individual shaped pieces made of glass or ceramic materials.

Abstract: A device for detecting data relating to the passage of vehicles on the road including a piezoelectric effect cable and a cylindrical metal tube having an inside diameter which is larger than the outside diameter of the piezoelectric cable with the space between the cable and inner walls of the tube being filled with a compacted metal oxide power.

Abstract: A method of manufacturing a ceramic insulated wire involves preparing an extrudable gel compound formed by dissolving a metal-organic compound in a solvent and adding at least one thermoplastic polymer or its monomer to the mixture to make the gel compound extrudable. The so prepared extrudable gel compound is then extruded around the outer periphery of a conductor for coating the conductor with a gel coating. Thereafter a heat treatment is performed for sintering the gel compound to form a ceramic coating.

Abstract: An insulated electrical wire is suitable for use as a distribution wire, a wire for winding coils, and for other electrical purposes. The wire can be used in a high-vacuum environment or in a high-temperature environment. This insulated electrical wire has a conductor core made of a base material (1), an anodic oxide layer (2), and an oxide insulating layer (3). The base material (1) forms a conductor core and has a surface cover of either an aluminum layer or an aluminum alloy layer at least on its outer surface. The anodic oxide layer (2) is formed on the surface layer. The oxide insulating layer (3) is formed on the anodic oxide layer by a sol-gel method or an organic acid salt pyrolytic method. This insulated electrical wire has a good heat resistance and a good insulating strength as well as excellent flexibility, and does not provide any gas adsorption source.

Abstract: An electrical conductor formed substantially of a titanium sub-oxide having a formula TiO.sub.x where x is less than two. The conductor may take the form of a resistance heater which is compatible with ceramic insulators, and is useful because of its ability to withstand corrosive media and its very low coefficient of thermal expansion.

Abstract: This invention relates to a resin composition comprising functionalized polypropylene, a hydrogenated mono alkylarene-conjugated diene block copolymer, oil, and a filler which can be blended to form a self-extinguishing, low smoke and halogen free insulation composition which exhibits high ultimate elongation and is relatively easy to process.

Abstract: This invention relates to a resin composition comprising polypropylene, a hydrogenated mono alkylarene-conjugated diene block copolymer, oil, and a filler which has been treated with a coupling agent, which can be blended to form a self-extinguishing, low smoke and halogen free insulation composition which exhibits high ultimate elongation and is relatively easy to process.

Abstract: Mineral insulated conduits are produced by insulating one or several electrical conductors, preferably metallic conductors, with silica staple fibers and sheathing the entire conductor with a metallic jacket. The silica staple fibers are produced by treating dry-spun soda water glass fibers which are free of non-alkaline metal compounds and which have a molar ratio of Na.sub.2 O:SiO.sub.2 of approximately 1:3 to 1:1.9, with aqueous, hydrogen ion containing acid or salt solutions, and then washing, drying, and optionally heat treating. Preferably, a binder is also used. The preferred binders are low in or free of alkalies, such as silica sol, boron trioxide, organosilanes, or the like. The mineral insulated conductors produced are characterized by a low electrical capacitance, low dielectric losses and a high electrical resistivity and are usable in a very wide range of temperatures. Instrument leads, thermocouples and heating conductors may also be produced in this advantageous manner.

Abstract: A cast cable connection comprising cables having their conductors interconnected and surrounding the conductors a housing containing a cured filler resin therein, said housing comprising bound, flexible, ceramic particles.

Abstract: To reduce the tendency of ground faults and short circuits on electrical heating elements operating at elevated voltages and temperatures, resistance heating wire is coated with a sublayer of magnesium zirconate followed by an outer layer of aluminum oxide; each layer being in the range of 0.001 to 0.010 inches thick.

Abstract: In a method for manufacturing a stranded conductor for an electrical power cable comprising a process for forming cupric oxide films of from 0.3 .mu.m to 3 .mu.m in thickness by passing an uninsulated stranded conductor constituted by a plurality of stranded copper strands through oxidizing liquid, the stranded conductor passing through the liquid is curved in a wave to form gaps between the strands, and the oxidizing liquid is caused to penetrate between the strands through the gaps to form cupric oxide films of from 0.3 .mu.m to 3 .mu.m in thickness on the surfaces of the strands. Also disclosed is a stranded conductor for an electrical power cable constituted by a plurality of stranded copper strands, at least one of the copper strands being covered with a cupric oxide film free from exfoliation.

Abstract: The invention relates to a polymer composition based on a polyphenylene ether which is suitable for wire insulation extrusion. The polymer composition comprises a polyphenylene ether, optionally a polystyrene, a hydrogenated block copolymer, an aromatic phosphate compound, a mineral oil and optionally typical additives. The invention also relates to an electrically conductive wire comprising an insulation built up from the above-mentioned polymer composition and provided around the electrically conductive wire by wire insulation extrusion.

Abstract: A cable for connecting a cardiac pacemaker to an electrode inserted in the heart through the blood stream utilizes a die-clad conductor or a number ofthem, especially several die-clad strands forming a twisted conductor of the stranded type, enclosed in a covering tube of a synthetic elastomer. The core of each die-clad strand is of a highly conducting metal, such as copper or a high-copper alloy. The outer cladding is a metal selected from the group consisting of tantalum, titanium, zirconium, niobium, titanium-base alloys, platinum, platinum-iridium alloys, platinum-palladium alloys and platinum-rhodium alloys. The cladding thickness is in the range from 0.0025 to 0.035 mm, while the cord diameter is between 0.04 to 0.3 mm. When tantalum, titanium, zirconium, niobium or titanium-alloy cladding is used, the outer surface can be made electrically insulating, preferably by anodizing.

Abstract: Flame retardant additive comprising alumina trihydrate and a methyl hydrogen polysiloxane which when added to ethylene polymers provide compositions which have improved flame retardant properties, have reduced gas evolution, do not drip or give off noxious gases on burning and are particularly useful as jacketing material about wire and cables.

Abstract: This heating element is constituted by a filament and a mixture, fritted at between 1700.degree. and 1800.degree. C., of alumina and less than 10% by weight of yttrium oxide. This mixture fills the space left free by the filament within the cylinder closed by an emissive disk forming the cathode.

Abstract: A low porosity coating comprised of at least two layers of material or composites capable of protecting a metal substrate from the corrosive effects of a chlorine-metal chloride environment at temperature values ranging up to 650.degree. C. The first of the two layers has a coefficient of thermal expansion that lies between the metal of the substrate and that of a metal oxide(s) layer disposed upon the first layer. A layer of metal oxide is disposed on the first layer, the metal oxide having a coefficient of expansion somewhat less than the first layer and a minimum solubility in the chlorine-chloride environment. The material or composite of the first layer and the metal oxide of the oxide layer are applied by a technique which sprays particles of the material or composite and metal oxide(s) against a surface at relatively high velocities and temperatures.

Abstract: An extrusion process for the manufacture of insulated winding wires. Part crystalline thermoplastic polycondensates with crystallite melting points above 170.degree. C., preferably above 250.degree. C., are extruded. Polyethylene terephthalate is the polycondensate of choice. These are filled with 5-15% by weight titanium dioxide. The result is the avoidance of fissure formation.

Abstract: A method of reducing electromagnetic re-radiation of harmonic and intermodulation products by metal structures, having at least two adjoining elements, in response to an incident electromagnetic signal (rusty bolt effect). The method comprises the application between the adjoining elements of the structure, at their junction, of a layer of a non-water soluble substance having a dielectric constant greater than 10.

Abstract: Electrical conducting cable which is insensitive to nuclear radiation comprising at least one conductive core, at least one layer of an insulating substance surrounding said conductive core and at least one conductive sheath surrounding said insulating layer, wherein the diameter .phi..sub.D of the sheath, the diameter .phi..sub.B of the conductive core, the diameter of .phi..sub.C of the insulating layer are linked by the equation: ##EQU1## F.sub.1 representing the .beta..sup.- radiation fraction from the core reaching the sheath, F.sub.2 representing the .beta..sup.- radiation fraction from the sheath which reaches the core, the insulating substance being constituted by a mixture of at least two metal oxides.

Abstract: In a method for manufacturing a stranded conductor for an electric power cable comprising a process for forming insulating films by passing an uninsulated stranded conductor constituted by a plurality of stranded conductive strands through oxidizing liquid, the stranded conductor passing through the liquid is curved at an angle of 3.degree. to 10.degree. in a predetermined path to form gaps between the strands, and the oxidizing liquid is caused to penetrate between the strands through the gaps to form oxide films on the surfaces of the strands.

Abstract: A polyolefin composition for electrical insulation which comprises polyolefin or crosslinked polyolefin and a small quantity of high-molecular weight polyethylene glycol. This composition is far less vulnerable to the deterioration that occurs as dendroid voids when employed as an electrical insulation of high-tension power cables which are operated under water. The polyethylene glycol has more than 44 carbon atoms and is used in an amount from 0.3 to 10 wt % based on polyolefin.

Abstract: Insulated electric power cables comprising a cured insulating material applied over a conductor and a layer of plastic compound comprising 100 parts by weight of a thermoplastic resin and 5-70 parts by weight of calcium oxide as a moisture-absorbing agent, overlying the insulating material and, optionally, lying between the conductor and the insulating material. The presence of calcium oxide serves to absorb steam before it penetrates into the insulating material through the layer of plastic compound being cured by steam, whereby the cured insulating material is free of microvoids and possess good insulation characteristics.

Abstract: An improved and economical fire retarding system for polymeric compositions comprising the combination of a halogen-containing hydrocarbon and an oxide of iron; a method of rendering polymeric compositions resistant to flame; and the flame resistant polymeric compositions and products comprising the same.

Abstract: An insulated, corrosion-resistant heart pacer is described which incorporates a novel tantalum output means, said output means having disposed on at least the exterior surfaces thereof an anodically-formed substantially continuous Ta.sub.2 O.sub.5 insulating layer. The output means of the pacer or other medical electronic device comprises a tantalum centerpin disposed through a hermetically sealed titanium case, which centerpin is welded to a tantalum feed wire, the combination providing a device in which the Ta.sub.2 O.sub.5 insulating layer reduces the electrical leakage from the tantalum conductor to the titanium case, and whereby the insulating layer disposed thereon further protects the pacer from electrolysis and electrochemical corrosion. An alternate embodiment of the present invention provides tantalum conduit means for electrically connecting an energy source to logic circuitry which is disposed within a hermetically sealed titanium case.

Abstract: A high voltage electric power transmission line having an electrical power carrying capacity of 50 megawatts or more. An electrical power conductor is contained within a substantially rigid dielectric casing formed of a plurality of elongated tubular glass casing sections hermetically bonded together linearly end to end forming a continuous elongated casing around the conductor. The casing is loosely contained in an outer duct which permits lateral movement of the casing in the duct but places a maximum limit on such movement.

Abstract: An electrically insulating powdery material with a volume resistivity of at least 1 .times. 10.sup.10 ohms-cm, which consists of a calcined product of a mixture of magnesium oxide with boron oxide and if desired, at least one of titanium, iron and chromium oxides and has a special novel structure wherein a core of magnesium oxide particles is surrounded by a sheath of a double oxide of the magnesium oxide and the boron oxide and if desired, the other metal oxide. This insulating powdery material is produced by calcining the above mixture under specified calcining conditions determined by a special temperature-time relation. A thermally conducting and electrically insulating resin composition especially having superior electrical properties under high temperature-high humidity conditions can be prepared using the above powdery material as a filler.