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 a power and/or telecommunications cable including at least one component element made of a material extruded from an extrudable composition, wherein said extrudable composition comprises a biopolymer selected from polymers of cellulose ester, polymers of starch complexed with a biodegradable polyester, polymers of polyhydroxyalkanoate, and/or polymers of polylactic acid comprising a mixture of polylactic and of polyester.

Abstract: The present invention concerns an electrical control cable (1?) with a section diameter at most equal to 2 mm, of the type including a plurality of strands extending in the longitudinal direction of the cable, said strands being twisted to form a stranded conductor. According to the invention, only certain strands (20) of the stranded conductor are of electrically conductive material, for example copper, the remaining strands (40) being of non-conductive material, such as a polyamide, high-strength polyester or a polyetherimide.

Abstract: The present invention relates to a cable comprising at least one conductor element extending inside at least one insulating covering. The invention is remarkable in that at least one insulating covering is made from a fire-resistant composition comprising a polymer and a fibrous phyllosilicate.

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: An improved personal body grounding system includes a grounding pad having two or more ground leads conductively coupled to one or more grounded anchors having multiple ground contact points. A monitor tests the continuity to ground using the circuit created by the multiple ground contact points. The monitor includes multiple safety features in the event of a power surge. The system also includes an electrical meter to measure the personal body voltage of a user and a voltage gauge for measuring continuity to ground.

Abstract: The present invention concerns a fire resistant composition particularly for a power and/or telecommunications cable, said composition comprising a polymer and a fire retardant filler. The invention is remarkable in that the polymer is thermoplastic in type and in that the fire retardant filler comprises cork.

Abstract: The present invention provides a photo-crosslinkable composition for fabricating a material for a step-index plastics optical fiber. The invention is remarkable in that the photo-crosslinkable composition comprises an acrylate derivative of a compound based on bisphenol, and a photoinitiator.

Abstract: A thermo-adherent composition for coil wires includes a polyester type thermoplastic polyurethane.

Abstract: A subject-matter of the invention is a copolymer comprising at least 3 units, P1, P2 and P3, with the following general formulae: with X1, X2 and X3, which are identical or different, taken from the group of atoms consisting of H, F, Cl and Br; with R1 taken from the group of atoms consisting of H, F, Cl and Br; with R2 a carbonaceous group comprising from 1 to 10 partially or completely fluorinated carbon atoms; with Y1 and Y2, which are identical or different, taken either from the group of atoms consisting of H, F, Cl and Br or from the family of the carbonaceous groups comprising from 1 to 10 carbon atoms; with Y3 a carbonyl group or a divalent carbonaceous group; the content of P2 unit in the copolymer being between 30 and 70 mol % for respectively a content of P1 and P3 units in the copolymer of between 70 and 30 mol % and the weight-average molar mass (Mw) of the said copolymer being between 103 and 106 g/mol. Preferably, the copolymer is of CTFE/VCA/HFP or TFE/VCA/HFP type.

Abstract: The present invention relates to a method of manufacturing an optical fiber ribbon comprising the following steps: arranging N groups of optical fibers so that the fibers in any one group are disposed in the same plane, applying a first layer of a first liquid resin settable under the action of UV type radiation onto each group of optical fibers to form first casings, applying a second layer of a second liquid resin settable under the action of UV type radiation disposed to link together the adjacent first casings, and applying a single irradiation step to the second layer and the first layers using UV type radiation in order to form the first matrices and to form the “link” second matrix.

Abstract: A method of fabricating a photocrystalline plastic optical fiber comprises, for fabricating the cladding, a step of forming a flow by simultaneously injecting a liquid first composition that is a precursor of the cladding polymer and curable by ultraviolet radiation into a first series of holes in an injection plate, and a second composition that is unreactive to the ultraviolet radiation and is selected from a liquid composition and a gas composition into a second series of holes in the plate. The second series of holes have a substantially periodic distribution and each of the holes of the second series has as its closest neighbors holes of the first series. The method further includes a step of irradiating the flow with ultraviolet radiation to form the photocrystalline plastic optical fiber.

Abstract: A method of fabricating a graded index plastics material optical fiber whose refractive index varies between its center and its periphery comprises the following process steps: preparing at least two liquid compositions with different refractive indices, each composition comprising at least one polymer, a substance to vary the refractive index being present in at least one composition and a cross-linking starter being present in at least one composition, filling a preform formation system with the compositions, producing a liquid preform in the system, the refractive index of said preform having a given gradient, and drawing the preform to obtain a graded index plastics material optical fiber. The production of the preform comprises a step with substantially no flow of the compositions along the system.

Abstract: The present invention relates to a method of manufacturing an optical fiber ribbon comprising the following steps: arranging N groups of optical fibers so that the fibers in any one group are disposed in the same plane, applying a first layer of a first liquid resin settable under the action of UV type radiation onto each group of optical fibers to form first casings, applying a second layer of a second liquid resin settable under the action of UV type radiation disposed to link together the adjacent first casings, and applying a single irradiation step to the second layer and the first layers using UV type radiation in order to form the first matrices and to form the “link” second matrix.

Abstract: An insulated wire capable of withstanding immersion in water and oil. The wire includes an electrical conductor and a coating on the conductor. The coating includes an inner layer formed of at least one layer of enamel which is disposed on the conductor and an outer layer of polyphenylene oxide or of polyphenylene oxide modified by polystyrene on top of the inner layer.

Abstract: The invention relates to a varnish for winding wires, the varnish comprising a copolymer obtained from a thermoplastic or thermosetting resin and containing units derived from silane, and a mineral filler selected from compounds of B, Al, Ti, Zn, Zr, Cr, Fe, silicates, and mixtures thereof. The resin is selected from polyamide imide (PAI), polyester imide (PEI), polyimide (PI), polyester (PE), polyurethane (PU), and polyvinylacetal (PVA). The varnish makes it possible to obtain winding wires of lifetime that is increased by having improved ability to withstand partial discharges and voltage peaks, even at high temperatures. The invention is applicable to manufacturing coils, in particular for variable frequency controllers and converters.