A method of melt blending a flame-retardant composition includes the steps: (a) heating a polymeric brominated flame retardant to a temperature of 5° C. or greater above the polymeric brominated flame retardants glass transition temperature as measured by Differential Scanning calorimetry, wherein the polymeric brominated flame retardant has a Temperature of 5% Mass Loss from 300° C. to 700° C. as measured according to Thermogravimetric Analysis; (b) mixing a polyolefin into the polymeric brominated flame retardant after step (a); and (c) mixing an inorganic filler into the polyolefin and polymeric brominated flame retardant after step (b) to form the flame-retardant composition.

A method of melt blending a flame-retardant composition includes the steps: (a) heating a polymeric brominated flame retardant to a temperature of 5° C. or greater above the polymeric brominated flame retardants glass transition temperature as measured by Differential Scanning calorimetry, wherein the polymeric brominated flame retardant has a Temperature of 5% Mass Loss from 300° C. to 700° C. as measured according to Thermogravimetric Analysis; (b) mixing a polyolefin into the polymeric brominated flame retardant after step (a); and (c) mixing an inorganic filler into the polyolefin and polymeric brominated flame retardant after step (b) to form the flame-retardant composition.

The invention relates to mixtures containing, as component (A) ammonium polyphosphate and, as component (B) a soluble ionic compound which contains sulfate and/or is capable of releasing sulfate ions. The invention also relates to a method for producing such mixtures and to the use thereof.

The invention relates to mixtures containing, as component (A) ammonium polyphosphate and, as component (B) a soluble ionic compound which contains sulfate and/or is capable of releasing sulfate ions. The invention also relates to a method for producing such mixtures and to the use thereof.

The present invention relates to a fire resistant and/or retardant composition comprising a starch, at least one starch plasticiser, at least one first alkali silicate and at least one phyllosilicate; a method for preparing the fire resistant and/or retardant composition; a device chosen from among a power and/or telecommunications cable, and an accessory for a power and/or telecommunications cable, the cable comprising at least one fire resistant and/or retardant layer of the fire resistant and/or retardant composition, and the cable accessory comprising at least one fire resistant and/or retardant layer of the fire resistant and/or retardant composition; as well as a method for manufacturing such a device.

The present invention relates to a fire resistant and/or retardant composition comprising a starch, at least one starch plasticiser, at least one first alkali silicate and at least one phyllosilicate; a method for preparing the fire resistant and/or retardant composition; a device chosen from among a power and/or telecommunications cable, and an accessory for a power and/or telecommunications cable, the cable comprising at least one fire resistant and/or retardant layer of the fire resistant and/or retardant composition, and the cable accessory comprising at least one fire resistant and/or retardant layer of the fire resistant and/or retardant composition; as well as a method for manufacturing such a device.

The present invention relates to a method for manufacturing a cable comprising at least one elongate electrically conductive element, at least one composite layer surrounding the elongate electrically conductive element, the composite layer comprising a non-woven fibrous material impregnated by a geopolymer material, and at least one polymer sleeve surrounding the composite layer, the method using a tube of plastic material to facilitate the extrusion of the polymer sleeve around the composite layer.

The present invention relates to a method for manufacturing a cable comprising at least one elongate electrically conductive element, at least one composite layer surrounding the elongate electrically conductive element, the composite layer comprising a non-woven fibrous material impregnated by a geopolymer material, and at least one polymer sleeve surrounding the composite layer, the method using a tube of plastic material to facilitate the extrusion of the polymer sleeve around the composite layer.

A covered electric wire contains a conductor and an insulation covering which covers an outer surface of the conductor. The covered electric wire has a flat portion where a cross section of the conductor intersecting an axial direction of the covered electric wire has a flat shape which has a larger length in a width direction. The insulation covering contains, in the cross section of the flat portion, plane regions which contains, at the surface thereof: a width-directional region along the width direction; and a height-directional region intersecting the width direction. The insulation covering contains a region having a rounded shape having a radius at the junction between the width-directional region and the height-directional region, and the covered electric wire satisfies a relationship of R>t between the radius R and a thickness t of the insulation covering at the plane region. The wire harness contains the covered electric wire.

A covered electric wire contains a conductor and an insulation covering which covers an outer surface of the conductor. The covered electric wire has a flat portion where a cross section of the conductor intersecting an axial direction of the covered electric wire has a flat shape which has a larger length in a width direction. The insulation covering contains, in the cross section of the flat portion, plane regions which contains, at the surface thereof: a width-directional region along the width direction; and a height-directional region intersecting the width direction. The insulation covering contains a region having a rounded shape having a radius at the junction between the width-directional region and the height-directional region, and the covered electric wire satisfies a relationship of R>t between the radius R and a thickness t of the insulation covering at the plane region. The wire harness contains the covered electric wire.