Abstract: A flexible flat belt made up of a plurality of covered wires abutting each other in side-by-side relationship. Imaginary lines on the peripheries of the covered wires which are parallel to and remote from the axes of the wires determine at least one plane. The adjacent wires form troughs parallel to and spaced apart from the axes and adhesive is applied to the troughs between adjacent wires. It is preferred that a first adhesive, which sets instantaneously, be applied at spaced apart intervals between adjacent wires. Since this adhesive is spaced apart, flexibility is not impaired. This is used in conjunction with the second adhesive which is non-setting and is supplied substantially throughout the length of adjacent wires. Due to its character, it does not interfere with the flexibility of the flat cable.

Abstract: An improved jacket material for insulated electric cable wherein the jacket contains one or more additives of an ion exchange resin and/or an ionic scavenging compound for neutralizing or capturing ionic impurities.

Abstract: Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated dienes other than vinyl norbornene. The elastomeric polymers containing vinyl norbornene generally have a branching index below 0.5.

Abstract: A high energy coaxial cable is disclosed which is flexible to the extent of allowing a bend radius as short as 11 1/2 inches. The cable will conduct up to 500 kiloamperes and is reinforced to resist the high magnetic forces within the cable caused by the high current conducted. The cable is therefore useful in coupling high current between parts which experience relative movement such as a stationary power supply and a recoiling gun breech.

Abstract: An electrical cable for a submersible well pump is provided which is resistant to attack by hydrogen sulfide and which is less susceptible to damage from expanding gases during decompression. The electrical cable has a central copper conductor core. The conductor core is surrounded by a layer of electrical insulation material of either thermosetting or thermoplastic material. Surrounding the insulation material is a polymeric, low permeable layer having a hydrogen sulfide permeability rate which is substantially lower than the insulation material. A metal tape layer, such as lead tape, surrounds the low permeable layer. One or more conductor cores together with the insulation, low permeable layer and metal tape layer can be embedded in an elastomeric jacket and provided with an outer metal armor to provide a single electrical cable.

Abstract: A thermoplastic resin composition having in admixture a polyphenylene ether resin and an elastomeric block copolymer wherein the block copolymer has in admixture a triblock copolymer A-B-A' and a diblock copolymer A-B with A and A' being polymerized vinyl aromatic hydrocarbon blocks such as styrene and B being an ethylene-alkylene block such as ethylene-butylene. The composition of this invention can also include other additives such as siloxane fluids, flame retardants, polyolefins, and phosphates, as well as fillers, etc. Also included in this invention is the process of preparing such compositions and articles of manufacture prepared therefrom, such as electrical conductor articles or formed articles. The compositions of this invention provide improved flexibility and elongation.

Abstract: The present invention relates to an insulated wire comprising a conductor and at least two insulating layers provided on the outer periphery of the conductor. The inner insulating layer is provided directly or via another insulation on the outer periphery of the conductor and comprises a polyolefin compound containing 20 to 80 parts by weight of at least one substance selected from ethylene .alpha.-olefin copolymer, ethylene .alpha.-olefin polyene copolymer (.alpha.-olefin having the carbon numbers of C.sub.3 -C.sub.10, polyene being non-conjugated diene).

Abstract: A method and apparatus for filling a jacketed signal conduit with a blocking material are provided. The blocking material is injected into the jacketed signal conduit such that the blocking material occupies space within the jacketed signal conduit not occupied by the signal conduit. The injected blocking material inhibits fluid intrusion and migration between the signal conduit jacket and the signal conduit.

Abstract: There is provided an elastomeric composition including a kaolinitic clay mineral filler, characterised in that said kaolinitic clay mineral (a) is a hydrous kaolinitic clay mineral which has a content of non-exchangeable alkali metal cations not exceeding 10,000 ppm (parts by weight per million parts by weight of dry clay) and a content of exchangeable alkali metal cations not exceeding 750 ppm or (b) is a calcined kaolinitic clay mineral prepared by calcining a hydrous kaolinitic clay mineral having a content of non-exchangeable alkali metal cations not exceeding 10,000 ppm and a content of exchangeable alkali metal cations not exceeding 750 ppm.

Abstract: A hermetic lead wire having an extruded chlorosulfonated polyethylene insulation wherein the insulation also contains an acid acceptor, filler and peroxide cross-linking agent. The insulation composition and a method of preparing the insulation composition by first blending the chlorosulfonated polyethylene with the acid acceptor and then adding a filler and peroxide cross-linking agent.

Abstract: The claimed invention relates to a water-insoluble fire retardant coating composition and a method of rendering PVC cable fire resistant.

Abstract: Flame-retarded polymer compositions comprising a hydrated inorganic filler, at least one ethylene/alkyl (meth)acrylate copolymer and at least one copolymer of ethylene and of at least one .alpha.-olefin, which compositions consist essentially of 120 to 240 parts by weight of hydrated inorganic filler per 100 parts by weight of a polymer phase consisting of:(a) 30 to 75 parts by weight of at least one ethylene/alkyl (meth)acrylate copolymer (A) having a content of alkyl (meth)acrylate of between 1 and 50 mol %,(b) 10 to 30 parts by weight of at least one ethylene/alkyl (meth)acrylate/unsaturated dicarboxylic acid anhydride terpolymer (B),(c) 5 to 55 parts by weight of at least one copolymer of ethylene and of at least one .alpha.-olefin (C) having a density of between 0.865 and 0.915 and a degree of crystallinity equal to at least 5%, and(d) 0 to 5 parts by weight of at least one low-density polyethylene (D).Industrial articles comprising such a flame-retarded polymer composition.

Abstract: A radiation-resistant high molecular composition is disclosed, charqacterized in that, to the high molecular polymer, a halogenated acenaphtylene and/or condensates thereof represented by a following general formula [I] ##STR1## (wherein, X indicates a chlorine or bromine atom, a indicates 0 to 2, b indicates 1 to 6 and n indicates an integer not less than 1) and a diphenyl ether derivative represented by a following general formula [II] ##STR2## (wherein, R.sub.1 and R.sub.2 indicate any ones of hydrogen atom, alkyl, alkoxy, phenyl phenoxy, diphenyloxy and terphenyloxy group) and/or basic lead compound are formulated.

Abstract: A flame-retardant composition is prepared by mixing 100 parts by weight of a rubber or plastics free from any halogen with about 50 to about 200 parts by weight of magnesium hydroxide having an average particle diameter of about 0.3 to about 2 .mu.m and about 5 to about 50 parts by weight of carbon black powder having an oil absorption of about 0.5 to about 2.0 ml/g, and then cross-linking the mixture with an organic peroxide, sulfur, or a sulfur compound as a vulcanizing agent. By forming an electrical insulation and/or a sheath of the flame-retardant composition, there is provided a flame-retardant cable of the type including a cable core composed of an electric conductor coated with the electrical insulation or a plurality of such cores twisted together and covered, together with a filler, with the sheath.

Abstract: This application discloses cables insulated with a flexible homogenous and smooth composition which consists essentially of an interdispersion of low density polyethylene and polychloroprene ingredients and at least an effective amount of fibrous polytetrafluoroethylene interdispersing agent effective to homogenously blend said ingredients.

Abstract: Co-vulcanizates which have good mechanical properties, a good resistance to oil, an effective flame resistance and a low smoke gas density are obtained from mixtures of (a) from 95 to 5% by weight of EVA rubber and (b) from 5 to 95% by weight of elastomers which contain nitrile groups and have from 25 to 140 nitrile groups and less than 35 double bonds per 1000 carbon atoms, by radical cross-linking.

Abstract: Novel coupling compositions for improving adhesion between an organic elastomer and an inorganic substrate comprise (A) an ethylenically unsaturated silane, having bonded to silicon, at least one hydroxy group and/or alkoxy group reactive with the inorganic substrate and at least one ethylenically unsaturated group polymerizable with the organic elastomeric matrix; (B) an organosiloxane oligomer, having bonded to silicon, at least one hydroxy and/or alkoxy group reactive with said inorganic substrate; and (C) optionally, an ethylenically unsaturated organosiloxane oligomer, having bonded to silicon, at least one ethylenically unsaturated group polymerizable with said organic elastomeric matrix.The novel curable compositions contain the novel coupling compositions, an organic elastomer, an inorganic filler, and a peroxide crosslinking agent.

Abstract: Organophosphorus compounds having the general formula ##STR1## useful as water tree resistant additives for polymeric compositions.

Abstract: An improved sheathed cable and method for producing same is described. The cable includes an inner insulated conductor/conductor group, an outer corrugated metal sheath, and a barrier layer of a pliable, inert sealing material disposed therebetween to prevent the passage of gas or vapors via the cable. The method includes the steps of applying the pliable material around the inner insulated conductor/conductor group, wrapping the pliable material with a flexible tape, forming an outer metallic sheath around the material, and making annular corrugations in the outer sheath so as to compress the sealing compound.

Abstract: An insulator comprising a plurality of fins (1) or one-piece groups of fins made of elastomer and having sleeves (2) disposed end-to-end. The fins surround a central member (3) and are vulcanized. The fins form a water-tight tube whose cohesion is ensured at least by vulcanizing intermediate elastomer portions (5) which are inserted raw between vulcanized fins or one-piece groups of fins and adhere to the facing surfaces of the said sleeves by virtue of their subsequent vulcanization.

Abstract: This invention is an improved insulation for electric cables and an improved method of making the insulation. Cross linked polyethylene insulation is too stiff, particularly in high voltage cables which require a thick layer of insulation. Copolymers of polypropylene have electrical properties substantially equal to those of polyethylene, but do not have the necessary physical strength and have to be filled with clay or other filler that provides the required strength but degrades the electrical characteristics. A novel feature of this method is the utilization of the screw of the extruder to effect a mixing of the ingredients in an improved polymer system for cable insulation.

Abstract: A self-extinguishing fire-protective composition is disclosed. The composition includes a water-based resinous emulsion, organically bound halogen, clay and a low temperature fiber such as glass or organic fibers.

Abstract: This telephone drop wire is insulated with an improved insulation made from a semi-crystalline, low molecular weight, ethylene-propylene diene terpolymer (EPDM) which is used for a unipass insulation. The insulation has improved electrical properties which permit thinner sections of insulation to be used, so that the overall cross-section of the drop wire is of lower cost, higher temperature rating, and with moisture resistance suitable for use buried underground. The insulation is also much tougher for use where abrasion is a factor.

Abstract: A method of producing electrical conductor cable having a polyethylene-based coating, wherein additive material such as a filler is first mixed with a vehicle including an ethylene propylene rubber to provide a homogeneous concentrate, and the concentrate is then blended with polyethylene to constitute a coating composition for application to a cable as by extrusion. The concentrate-polyethylene blending step may be performed by the pumping screw of a cable-coating extruder.

Abstract: A crosslink curable ethylene-propylene rubber composition with improved resistance to flame and heat, the cured rubber composition and electrical conductors insulated with the cured rubber composition. The improved rubber composition comprises a combination of ethylene-propylene rubber, chlorosulfonated polyethylene, zinc oxide, hydrated alumina and amorphous silica in particular proportions.

Abstract: A crosslink curable ethylene-propylene rubber composition with improved resistance to heat, the cured rubber composition and electrical conductors insulated with said cured rubber composition. The improved rubber composition comprises a combination of ethylene-propylene rubber, chlorosulfonated polyethylene, zinc oxide, talc and carbon black in particular proportions.

Abstract: A crosslink curable ethylene-propylene rubber composition with improved resistance to flame and heat, the cured rubber composition and electrical conductors insulated with the cured rubber composition. The improved rubber composition comprises a combination of ethylene-propylene rubber, chlorosulfonated polyethylene, zinc oxide, hydrated alumina and amorphous silica in particular proportions.

Abstract: This invention is an improved filling compound for preventing moisture penetration along the interior of high voltage electric power cables. Amorphous polypropylene, mixed with carbon where it must be semiconductive, is an extremely good filling compound because of its electrical characteristics and also because of its good flow characteristics when extruding. When the cable is to be used under conditions where it must withstand temperatures so low that the polypropylene becomes brittle, it can be blended with polyisobutylene rubber to withstand lower temperatures, but the blend must be kept within limits to prevent loss of the good flow characteristics of the amorphous polypropylene.

Abstract: An electrical conductor insulated with a cured heat resistant, radiation resistant, substantially dimensionally stable electrical insulation comprising a chlorinated polyethylene elastomer composition which has been electron cured with a dosage of at least 1 megarad. The product of the invention may be a single insulated wire or a group of twisted or cabled insulated wires enclosed in an electron cured chlorinated polyethylene elastomer composition jacket.

Abstract: Electrical conductors having an insulation layer comprising a thermosetting elastomeric composition capable of imbibing low molecular weight hydrocarbon well fluids when under pressure and rapidly desorbing the fluids when pressure is removed, and surrounded by a confining braid layer are able to withstand use in gassy oil wells without consequent depressurization-caused rupture failures. Armored electrical cables formed from these insulated conductors without an elastomeric jacketing are suitable for use in powering electric motors in oil wells that have particularly high proportions of gassy hydrocarbons under pressure without undergoing rupture failure.

Abstract: Filling compounds for high voltage, electric power transmission cables have been deficient in one characteristic or another, such as incompletely filling voids during manufacture, forming voids when cables are in service, lack of permanent adhesion to cable components to prevent passage of water lengthwise of the cable, and low drip point when cables are at elevated temperatures. This invention is a cable filled with a compound of isobutylene rubber that obtains all of the desirable filler characteristics for a high voltage power transmission cable.

Abstract: Electrical cables having conductors, each provided with an insulation layer comprising a thermosetting elastomeric composition capable of imbibing low molecular weight well fluids when under pressure and rapidly desorbing the fluids when pressure is relieved which is surrounded by a confining braid layer, the insulated and braid-covered conductors being surrounded by a perforated outer armor formed of high temperature polyolefin, are able to withstand the environment within corrosive, gassy oil wells without corrosion of the armor and without undergoing depressurization-caused rupture failures.

Abstract: A crosslink curable ethylene-propylene rubber composition with improved resistance to heat, the cured rubber composition and electrical conductors insulated with said cured rubber composition. The improved rubber composition comprises a combination of ethylene-propylene rubber, chlorosulfonated polyethylene, zinc oxide, talc and carbon black in particular proportions.

Abstract: A power cable having a plastic electrical insulation which is partially or wholly composed of a plastic compound. The plastic compound containing an inorganic or organic electrolyte which ionizes when dissolved in water, the power cable prevents the deterioration of insulation called "water tree" which has been a fatal drawback of the plastic insulation layers of the conventional plastic insulated cables such as cross-linked polyethylene cables, etc.

Abstract: In combination in an electric cable, at least one conductor, an essentially smokeless insulating jacket enclosing said conductor, the jacket consisting essentially of a chlorosulfonated polyethylene having uniformly dispersed therethrough an amount of magnesium oxide at least sufficient to suppress substantial cable jacket smoking when the cable is subjected to pyrolysis.

Abstract: A method of manufacturing high voltage carrying electric power cable having a conductor insulated with a multilayered covering, and the cable product thereof. The cable construction includes a primary or dielectric insulating body of thermoset ethylene-propylene rubber and a thermoset jacket about the conductor, which is substantially free of corona-prone or ionization-prone voids and separations intermediate the layers. The method comprises forming and curing the ethylene-propylene rubber compound constituting the body of the primary or dielectric insulation around the conductor and then heat treating the thermoset-cured ethylene-propylene rubber insulation prior to applying subsequent components of the multilayered covering about the condutor, including an overlying semiconductive shielding layer and a protective enclosing jacket of heat-cured thermoset polymer.