Abstract: A polypropylene (F) for film condensers having the following requirements: (1) an MFR (JIS K 7210, 230° C., 2.16 kg load) in the range of 1-10 (g/10 min), (2) an mmmm fraction that is at least 93%, (3) a <2,1>erythro position defect amount as measured using 13C-NMR that is less than 0.1 mol %, (4) ash content obtained by complete combustion in atmosphere that is at most 50 ppm, (5) chlorine content as measured by ion chromatography that is at most 5 ppm; and (6) is obtained by including a propylene homopolymer for which Mw/Mn as measured via GPC is 6.5-12 and an ?-crystal nucleating agent with a melting point of at most 290° C.

Abstract: A composition including: (a) from 30 to 70% by weight of a mixture of benzyltoluene and dibenzyltoluene, and (b) from 70 to 30% by weight of at least one compound chosen from the C4-C8 aromatic compounds enclosing two benzene rings condensed or bonded to each other by a bond or by a spacer group other than —CH2-, the oligomers of same and the mixtures of same, excluding phenylxylylethane. Also, the use of this composition, with or without phenylxylylethane, depending on the case, as a dielectric and/or heat-transfer fluid, in particular in use conditions at very low temperatures, such as temperatures lower than ?40° C., or indeed lower than ?60° C. Also, mixtures of these compositions with mineral oils and/or natural or synthetic esters. Finally, devices, in particular electrical devices, incorporating this composition.

Abstract: The present invention provides a capacitor oil that can maintain breakdown voltage at a high level in a wide temperature range of ?50° C. to 30° C., extremely unlikely precipitates as crystals in particular at ?50° C. and thus has excellent properties both at normal temperature and a lower temperature. The capacitor oil of the present invention comprises 1,1-diphenylethane and benzyltoluene, wherein the mass ratio of 1,1-diphenylethane to benzyltoluene is 0.8 to 2.0, the total amount of the ortho-isomer and para-isomer in the benzyltoluene is 90 percent by mass or less, and the composition has a 40° C. kinematic viscosity of 3.00 mm2/s or lower.

Abstract: Provided is a use of a vegetable oil high in monounsaturates as dielectric and heat-transfer fluid in a device for the generation, storage, conversion and/or distribution of electrical energy.

Abstract: The present invention provides new ferroelectric ceramic materials which can be sintered at a temperature lower than that of the conventional ferroelectric ceramic materials and upon sintering, devices formed of the new ferroelectric ceramic materials possesses excellent piezoelectric properties which are suitable for many industrial applications. The ferroelectric ceramic material includes a composition with a general formula of wPb(Ni1/3Nb2/3)O3-xPb(Zn1/3Nb2/3)O3-yPb(Mg1/3Nb2/3)O3-zPbZrO3-(1?w?x?y?z)PbTiO3, in which 0<w<1, 0<x<1, 0?y<1, 0<z<1, w+x+y+z<1, and 0.5?w+x+y. A method of preparing a ferroelectric ceramic material includes preparing MgNb2O6, ZnNb2O6 and NiNb2O6 powder precursors, mixing the precursors with PbO, TiO2 and ZrO2 to form a mixture and calcining the mixture.

Abstract: A method for heating materials by application of radio frequency (“RF”) energy is disclosed. For example, the disclosure concerns a method and apparatus for RF heating of petroleum ore, such as bitumen, oil sands, oil shale, tar sands, or heavy oil. Petroleum ore is mixed with a substance comprising mini-dipole susceptors such as carbon strands. A source is provided which applies RF energy to the mixture of a power and frequency sufficient to heat the mini-dipole susceptors. The RF energy is applied for a sufficient time to allow the mini-dipole susceptors to heat the mixture to an average temperature greater than about 212° F. (100° C.). Optionally, the mini-dipole susceptors can be removed after the desired average temperature has been achieved. The susceptors may provide advantages for the RF heating of hydrocarbons, such as higher temperatures (sufficient for distillation or pyrolysis), anhydrous processing, and greater speed or efficiency.

Abstract: A highly heat-resistant fluororesin, such as tetrafluoroethylene resin or tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, is filled with 0.5 to 1 weight % of a non-black insulating pigment that has a heat resistance such that discoloration does not occur when the fluororesin is baked. Green insulating pigment whose main component is a TiO2—CoO—NiO—ZnO system or a ZnO—CoO system, or blue insulating pigment whose main component is a CoO—Al2O3 system or a CoO—Al2O3—Cr2O3 system is used singly or in a combination, as the non-black insulating pigment. A highly arc-resistant insulator is provided that secures an insulating capacity and at the same time that secures an excellent ability to prevent both interior and exterior deterioration of the insulator and that avoids color heterogeneity and localized discoloration.

Abstract: The invention relates to a high-performance dielectric oil comprising approximately 75 to 95% by volume of a naphthenic oil and approximately 5 to 25% by volume of an ester oil, in particular a synthetic ester oil and more preferably an oil of the family of polyolesters. The high-performance dielectric oil may be used in high-voltage electrical equipment such as power, measurement, distribution or traction transformers, tap changers, bushings, distributors, oil-immersed circuit breakers, power capacitors, cables, etc.

Abstract: A method for heating materials by application of radio frequency (“RF”) energy is disclosed. For example, the disclosure concerns a method and apparatus for RF heating of petroleum ore, such as bitumen, oil sands, oil shale, tar sands, or heavy oil. Petroleum ore is mixed with a substance comprising mini-dipole susceptors such as carbon strands. A source is provided which applies RF energy to the mixture of a power and frequency sufficient to heat the mini-dipole susceptors. The RF energy is applied for a sufficient time to allow the mini-dipole susceptors to heat the mixture to an average temperature greater than about 212° F. (100° C.). Optionally, the mini-dipole susceptors can be removed after the desired average temperature has been achieved. The susceptors may provide advantages for the RF heating of hydrocarbons, such as higher temperatures (sufficient for distillation or pyrolysis), anhydrous processing, and greater speed or efficiency.

Abstract: A highly heat-resistant fluororesin, such as tetrafluoroethylene resin or tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, is filled with 0.5 to 1 weight % of a non-black insulating pigment that has a heat resistance such that discoloration does not occur when the fluororesin is baked. Green insulating pigment whose main component is a TiO2—CoO—NiO—ZnO system or a ZnO—CoO system, or blue insulating pigment whose main component is a CoO—Al2O3 system or a CoO—Al2O3—Cr2O3 system is used singly or in a combination, as the non-black insulating pigment. A highly arc-resistant insulator is provided that secures an insulating capacity and at the same time that secures an excellent ability to prevent both interior and exterior deterioration of the insulator and that avoids color heterogeneity and localized discoloration.

Abstract: A heat-conductive dielectric polymer material having an inter-penetrating-network (IPN) structure includes a polymer component, a curing agent, and a heat-conductive filler uniformly dispersed in the polymer component. The polymer component includes a thermoplastic plastic and a thermosetting epoxy resin. The curing agent is used to cure the thermosetting epoxy resin at a curing temperature. The heat conductivity of the heat-conductive dielectric polymer material is larger than 0.5 W/mK. A heat dissipation substrate including the heat-conductive dielectric polymer material in the present invention has a thickness of less than 0.5 mm and bears a voltage of over 1000 volts.

Abstract: It is intended to provide sanitary paper which is excellent in texture such as moistness and softness and scarcely causes skin irritation or blushing even if it is brought into contact with the skin frequently. Namely, sanitary paper having an oil absorbance specified in JIS P8141 of 7 mm or less and a moisture content of from 9.50 to 15.00% (measured in accordance with JIS P8127 after conditioning in accordance with JIS P8111); carrying a solution, which contains a moistening agent, a softener, an antioxidant and so on, coated in a dose of 46.0 to 160.0 mg/cm3 of the paper base; and having a bending hardness B measured with the use of a pure bending machine of from 0.0040 to 0.0060 g·cm2/cm.

Abstract: A sheet electrode with a predetermined thickness for an electric double layer capacitor is made by carrying out a roller rolling step in which a long sheet intermediate is made from a material containing a carbonaceous powder, a conductive assistant and a binder and thereafter. The sheet intermediate is passed between a pair of rolling rollers to be wound up by a winding section while being drawn out of a drawing section. The roller rolling step includes drawing the sheet intermediate out of the drawing section under a predetermined tension applied to the sheet intermediate, and controlling a widthwise position of the sheet intermediate immediately before the rolling rollers by an edge position controller, and winding the sheet intermediate rolled by the rollers onto a winding section while the winding section is applying a predetermined pressure to a rolling side drive roller located adjacent to the winding section and rotated at a predetermined speed.

Abstract: The present invention relates to slurry compositions for the chemical mechanical planarization (“CMP”) of tungsten. A non-metallic oxidizer in the form of periodic acid is used in combination with a mineral acid typically nitric acid, to maintain the pH of periodic acid at levels not leading to the precipitation of iodic acid salts. Ammonium nitrate (NH4NO3) is included in the CMP slurry which yields soft pad polishing rates of tungsten film removal of approximately 4,000 Å/min.

Abstract: An insulating material of high electrically insulating properties and high thermal conductivity is provided wherein the high thermal conductivity is attained by having a liquid crystal resin comprising a polymerization product of a resin composition containing a monomer which has a mesogen group.

Abstract: The present invention relates to a biaxially oriented polypropylene film and a capacitor made thereof. The biaxially oriented polypropylene film of the invention is a biaxially oriented polypropylene film that is 98-99.5% in isotacticity, above 99% in isotactic pentad fraction, and 1-4% in the sum of the machine- and transverse-direction heat shrinkage at 120.degree. C., or a biaxially oriented polypropylene film that is less than 10 ppm.multidot.% in the product of the film's ash content and internal haze and is above 99% in isotactic pentad fraction. With this constitution, the biaxially oriented polypropylene film of the present invention has good dielectric properties at high temperatures. Furthermore, the capacitor of the invention can be used safely for a long life at operating temperatures higher by up to 20.degree. C. than the maximum operating temperature of 85.degree. C. of the conventional biaxially oriented polypropylene films.

Abstract: A metallized plastic film capacitor is here disclosed which is impregnated with an electrically insulating oil composition comprising 10 to 95% by weight of an aromatic hydrocarbon having at least 3 benzene rings and 90 to 5% by weight of an olefin oligomer containing 7% by weight or less of a fraction having a molecular weight of 500 or less and 2% by weight or less of a fraction having a molecular weight of 400 or less.

Abstract: An MF capacitor of an oil impregnation type, whose durability in constant voltage application is so high that it is suitable for practical use. The metallized plastic film is impregnated with an electrically insulating oil composition obtained by adding 5-80% by weight of natural fatty acid triglyceride which contains a less amount of fatty acid ester having free hydroxyl radical to an aromatic hydrocarbon having a specific chemical structure and being liquid at -30.degree. C.

Abstract: An improved oil-filled capacitor which is excellent in low temperature characteristics. The oil-filled capacitor is composed of at least partially a plastics material and is impregnated with an electrical insulating oil which oil is characterized in that it comprises 0 to 100% by weight of a fraction A containing components boiling within the range of 268.degree. to 275.degree. C. (atmospheric pressure basis) and 100 to 0% by weight of a fraction B containing components boiling within the range of 280.degree. to 310.degree. C. (atmospheric pressure basis) which fractions are recovered by distillation from the heavy by-product oil that is produced in the preparation of ethylbenzene by alkylating benzene with ethylene in the presence of an alkylation catalyst and the ratio of the integrated intensity as chemical shift at 120 to 155 ppm of the spectrum measured by C.sup.

Abstract: A novel devitrifying frit is disclosed which has a coefficient of expansion essentially the same as that of silicon. The subject frits have a high softening temperature and excellent reheat stability which make them useful in ink formulations for forming dielectric layers in multilayer circuitry. The frits are also suitable for use as a substrate material for direct mounting of silicon chips or for use in thick film via-fill inks.

Abstract: An electric device particularly adapted for a fire retardant oil-filled transformer, comprising a cellulose-based insulating material impregnated with an insulating oil composed of 100 parts by weight of an ester of a polyol with a fatty acid having a fire point of 300.degree. C. or above and, incorporated therein, 0.005 to 1.0 part by weight of a phenolic compound having no alkyl groups as the substituent at the ortho positions and 0.01 to 2.0 parts by weight of an epoxy compound.

Abstract: The present invention relates to a method for refining an electrical insulating oil by refining a heavy by-product oil obtained in the preparation of ethylbenzene or ethyltoluene. The method comprises distilling off the lighter components from the by-product oil, then dehydrogenating, distilling and hydrogenating.

Abstract: An electrical capacitor (10) having an improved dielectric system. The capacitor includes layers of metal foil (15,16) and dielectric sheet material (17) which is impregnated with a liquid dielectric composed of a mixture of phenyl xylyl ethane and phenyl tolyl methanes.

Abstract: A metallized film capacitor having a dielectric fluid comprising glyceryl triacetate and about 30 to 90 vol. percent of epoxidized soybean oil.

Abstract: Provided is an impregnated capacitor wherein at least part of the capacitor element comprises a metallized polypropylene base film impregnated with an insulating impregnating agent comprising a compound having three condensed or non-condensed aromatic rings, the ratio of the amount of the impregnating agent which penetrates between the base film layers to that of said agent which penetrates into the base film per unit thickness (.mu.) being at least 60.

Abstract: A dielectric fluid for a metallized film capacitor consisting essentially of glyceryl triacetate and 0.01 to 10 weight % of a hindered phenolic antioxidant of N,N'-bis[3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionyl] hydrazine. The capacitor body includes metallized polypropylene film forming the electrodes and a separating dielectric.

Abstract: An electrical capacitor of a non-impregnated, self-curing type includes a roll or wound body provided with metallic layers. Interspaces between the windings of the roll are filled with a gaseous or vaporous additive substance of a polyatomic hydrocarbon compound which is free of halogens and whose ionization potential is less than the ionization potential of at least a part of decomposition products of dielectric substance of the capacitor. The additive substances makes it possible that in an electric arc of a disruptive breakdown in the dielectric material of the capacitor the charge is taken over by positive ions of the decomposition product and subsequent clusters of breakdowns are substantially prevented. In addition, the additive substances absorb during a breakdown UV photons so that the emission of secondary electrons on the metallic lining is avoided.

Abstract: A dielectric fluid for a metallized film capacitor consisting essentially of 75 volume % glyceryl triacetate and 25 volume % 3,4-epoxycyclohexylemethyl-3,4-epoxycyclohexane carboxylate. The capacitor body includes metallized polypropylene film forming the electrodes and a separating dielectric.

Abstract: An oil-filled capacitor which can be made small in size and has excellent electrical characteristics. The capacitor of the present invention is characterized in that it is made by impregnating a film-wound capacitor element with 1-phenyl-1-(benzylphenyl)ethane, at least a part of the dielectric material of said capacitor being made of a plastic film.

Abstract: A ceramic-like high temperature insulation for electrical coils is provided by mixing a silicone resin, synthetic fluoro-mica and a devitrified mica glass, impregnating an electrical coil with such material, curing the material and then treating the material to an elevated temperature about 300.degree. C. The elevated temperature treatment may be effected either prior to or during use of the coil.

Abstract: Disclosed herein is a capacitor comprising a metallized polypropylene film impregnated with a specified impregnating oil, i.e., a 1,2-bis(alkylphenyl)ethane, the thus prepared capacitor being suitable for use under a high voltage and a high potential gradient.

Abstract: A method is provided for gelling a dielectric in an alternating current capacitor of the type having a housing enclosing a pair of convolutely wound electrodes and dielectric spacers interleaved therebetween for separating the electrode with at least one of the electrodes being formed by a metallized film and using a dielectric of soybean oil, the method comprising adding an alkylhydroxyphenlalkanolyhydrazine compound to the soybean oil to gel the same within the housing so as to reduce its mobility and maintain the dielectric in proximity to the electrodes for reducing electrical corona discharge between the electrodes and for reducing electrical erosion of the electrodes.

Abstract: In a capacitor, a dielectric fluid including 0 to about 10 wt. % of an antioxidant, 0 to about 10 wt. % of an epoxide stabilizer, the remainder essentially a compound with more than two stearate groups. The presently preferred compound of the dielectric fluid is glyceryl tri(acetoxystearate). A primary function of the dielectric fluid is to help prevent air from contacting the capacitor body of the capacitor. The capacitor body includes as its dielectric a plastic film such as polypropylene and the above mentioned dielectric fluid. Air pockets in and around the capacitor body are impregnated with such fluid to minimize disruptive electrical or corona discharges without harmfully swelling the plastic film to thereby improve the operating efficiency of such capacitor.

Abstract: An aluminum electrolytic capacitor capable of operation at 150 VDC or higher and 105.degree. C. contains as its electrolyte a diisopropylamine or a triethylamine mono salt of azelaic acid dissolved in a solvent mixture of ethylene glycol, ethylene glycol and N-methylpyrrolidinone, ethylene glycol N-methylpyrrolidinone and dimethylformamide, butyrolactone, or butyrolactone and N-methylpyrrolidinone, all containing small amounts of water.

Abstract: Novel electrical capacitors comprise two electrodes separated by a dielectric member, said dielectric member comprising a polymer of at least one polyfunctional acrylate. The capacitor structure may constitute a single dielectric coating separating two electrode layers, or may comprise a plurality of alternating electrode layers and dielectric coatings.

Abstract: Certain fatty acids, esters and alcohol derivatives useful as electrical tree and water tree resistant compounds in polymer compositions are disclosed.

Abstract: A dielectric fluid for a capacitor includes a mixture of a phthalate ester and an alkylated napthalene.

Abstract: Isopropyl biphenyl is used as a dielectric fluid for a-c electrical capacitors. An additive of an epoxide having the chemical name 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate in an amount of at least 30% by volume of the dielectric fluid increases its dielectric constant.

Abstract: In a capacitor, a dielectric provides zero to about 10 weight percent of an antioxidant and glyceryl triacetate. The capacitor body includes metallized polypropylene film forming the electrodes and a separating dielectric. Air is excluded from the capacitor body during construction and dielectric fluid is prevented from impregnating the body and from imbibing into the polypropylene film by the characteristics of the glyceryl triacetate. By means of this construction, disruptive electrical or corona discharges and their harmful effects are reduced.

Abstract: An insulating system is described that incorporates a cellulosic material which is impregnated with a nitrogen content no less than 0.2% by weight and a overall density not greater than 0.9 gm/cm.sup.3. This cellulosic material when impregnated by a dielectric liquid such as transformer oil, exhibits a more uniform electrical stress distribution than papers having a density greater than 0.9 gm/cm.sup.3. The insulating system thereformed is particularly useful for application in low stress areas such as the layer insulation in a distribution class transformer.

Abstract: A silicone rubber sheet which is both electrically insulating and thermally radiating is prepared by treating a network insulating material, such as glass fabric, with an alkoxysilane and then coating the resulting network insulating material with a fluid silicone rubber composition of an aliphatically unsaturated polyorganosiloxane, a polyorganohydrogensiloxane, alumina powder, and a platinum-group compound catalyst. The rubber sheets have improved bending resistance.

Abstract: A dielectric fluid for a capacitor includes a mixture of phthalate ester, polychlorinated benzene and a linear alkylbenzene.

Abstract: Compositions, devoid of fillers, comprising an ethylene polymer and an N-phenyl substituted amino silane, which can be extruded about electrical conductors to provide insulation thereon which is resistant to the formation of water trees.

Abstract: An electrical insulating oil and oil-filled electrical appliances, in which the insulating oil comprises a mixture of diarylalkanes and alkyl-3-arylindane derivatives and/or 1,3-diarylbutene derivatives, and has various advantageous properties such as a high dielectric constant, hydrogen gas absorbing capacity, and adaptability to plastic film materials. By impregnating with the above insulating oil, high performance and long life electrical appliances can be manufactured.

Abstract: The electric device according to the present invention has as its constituents the insulating materials and elements comprising films of synthetic resin, for instance, polypropylene, impregnated with 1-phenyl-2-ethylphenylethane and/or 1-phenyl-2-isopropylphenylethane.According to the present invention, insulating oils having favorable compatibility with the film of synthetic resin such as polypropylene and favorable affinity to metals and having low viscosity have been provided, and in addition, electric devices excellent in properties of withstanding a high voltage and dielectric properties in a broad range of temperature from a low temperature to a high temperature have also been offered.

Abstract: Provided is an oil-impregnated power cable comprising an insulation layer formed by winding a composite film of polyolefin film and insulating paper onto an electric conductor and impregnated with an impregnating oil, said impregnating oil comprising distillates within a boiling range in terms of values at normal pressure between 265.degree. C. and 360.degree. C. obtained by contacting a hydrocarbon mixture with a boiling range between 75.degree. C. and 198.degree. C. resulting from a thermal cracking of petroleum hydrocarbons at a temperature of 700.degree. C. or higher and containing monocyclic aromatics and aromatic olefins, in liquid phase with an acid catalyst.

Abstract: The present invention relates to a cellulose-based electric insulation material and to a process for producing thereof.The cellulose-based electric insulation material contains from 0.02 to 1.1 weight % of boron with respect to absolutely dry material. The process for preparing said cellulose-based electric insulation material resides in that a cellulose-based paper pulp is prepared and cast for sheet making, the obtained paper sheets being pressed and dried. One of said intermediate products, namely paper pulp or paper sheets is treated with a chemical reagent which is boric acid or a boron compound forming boric acid when reacting with water or mixtures thereof, said chemical reagents being taken in amounts ensuring the boron content in the end product from 0.2 to 1.1 weight % with respect to absolutely dry material.

Abstract: An oil capable of use in environments where the accumulation of water is detrimental to the intended use, the oil consisting of branched and straight chain aliphatic hydrocarbons and minor amounts of tri-cresyl phosphate.

Abstract: An electrical capacitor having an improved dielectric system. The capacitor includes layers of metal foil and a dielectric sheet material which is impregnated with a liquid dielectric composition composed of a mixture of methyl diphenyl ethane and a lower alkyl diphenyl.

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.