Abstract: The invention relates to an electrical conductor coated in an insulating layer itself coated in a bonding layer, the conductor being characterized in that said bonding layer is obtained from a composition comprising a thermoplastics polymer and a settable resin. The invention also applies to a method of manufacturing such an electrical conductor coated in a bonding layer, the method being characterized in that it comprises applying said composition on said electrical conductor coated in said insulating layer, and applying treatment to cause said settable resin to be cured at least in part.

Abstract: A method of preparation for a layer of material for use with a power and/or telecommunications cable includes mixing a composition including a thermoplastic polymer matrix and a phenolic resin. The phenolic resin is selected from the group consisting of novolac phenol-formaldehyde resins and novolac cyanate ester resins. The phenolic resin is hardened within the thermoplastic polymer matrix to obtain nodules of hardened phenolic resin dispersed throughout the material.

Abstract: The present invention relates to a power and/or telecommunication cable comprising at least one conductive element surrounded by at least one insulating layer extending along the cable, the isolating layer being obtained from a composition containing the following compounds: a) an organic polymer; b) an inorganic compound containing a potassium oxide and/or one of the precursors thereof; c) a boron oxide and/or one of the precursors thereof; and d) calcium oxide CaO and/or one of the precursors thereof, characterized in that the amount of the compound d is at least 10 wt % of the total weight of the compounds b, c, and d in the composition.

Abstract: The present invention relates to an electric cable comprising one or more insulated electrical conductors forming a set of insulating conductors extending longitudinally inside a protective sheath, the inside surface of said protective sheath having at least two longitudinal grooves for the purpose of enabling the protective sheath to be stripped, wherein the outside surface of the protective sheath does not include longitudinal grooves for constituting tear starters of the protective sheath, and wherein the longitudinal grooves in the inside surface of the protective sheath are disposed at substantially equal distances from each other or from one another.

Abstract: A method of fabricating a power and/or telecommunications cable includes obtaining at least one layer of a material by thermally activating an elastomer composition containing a copolymer of ethylene vinyl acetate, a cyclic polyester oligomer, and a transesterification catalyst, where the material including nodules of polyester.

Abstract: The present invention provides a power and/or telecommunications cable including at least one layer of a material obtained from a composition comprising: a thermoplastic polymer matrix; and a phenolic resin; wherein said phenolic resin is selected from novolac phenol-formaldehyde resins and novolac cyanate ester resins, and wherein said material includes nodules of hardened phenolic resin dispersed throughout the material.

Abstract: The present invention relates to an enameling varnish composition, in particular for magnet wire. The invention is remarkable in that the enameling varnish composition comprises a polymer resin and an alkyl lactate, and in that the polymer resin is selected from the group comprising polyesters, polyester imides, THEIC-modified polyester imides, polyurethanes, polyamides, polyamide imides, polyvinyl acetoformals, and any mixture of these compounds.

Abstract: The present invention relates to a fire-resistance composition in particular as a material for a power and/or telecommunications cable. The invention is remarkable in that the composition comprises a polymer together with aluminum oxide in the form of particles having a mean diameter of less than one micrometer.

Abstract: The present invention relates to a process for preparing a modified diisocyanate to which is attached a pendant aliphatic chain containing at least 15 carbon atoms, said modified diisocyanate being obtained by reacting an isocyanate functional group of a triisocyanate with a terminal functional group of an aliphatic chain; to a process for preparing a self-lubricating insulating varnish; and to a process for producing an enameled electrical conductor.

Abstract: The invention concerns recyclable solid oxidation catalysts comprising a metal compound of a pentavalent or hexavalent metal M and selected among the group consisting of tantalum, vanadium, niobium, chromium, molybdenum, tungsten, grafted at the surface of a solid oxide with at least one, preferably one, covalent bond between an oxygen atom of the solid oxide and the metal M atom, the grafted metal compound having at least two alkoxy groups bound to the metal by the oxygen atom. Preferably, at least 2 alkoxy groups bound to the metal M belong to a polyol unit, preferably diol. The invention also concerns oxidation methods, in particular epoxidation methods using same.