Abstract: The invention concerns a self-mixing using cable, in particular for the distribution of electric power, wherein at least conductor-coating layer comprising a fire retardant composition is present. Such a composition comprises a base polymer material in admixture with predetermined amounts of melamine or a derivative thereof, red phosphorous, magnesium and/or aluminium hydroxide and a zeolite and allows to obtain cables endowed with improved self-extinguishing properties.

Abstract: Cable, in particular for medium-voltage or high-voltage electrical power transmission or distribution, for telecommunications or for data transmission, comprising a conductor and at least one coating layer based on a non-crosslinked polymer material comprising a thermoplastic reactor elastomer with an ethylene-based elastomeric phase co-polymerized with an &agr;-olefin and a propylene-based thermoplastic phase, in which the said elastomeric phase in the said thermoplastic reactor elastomer is at least 45% by weight relative to the total weight of the thermoplastic reactor elastomer, and the said thermoplastic reactor elastomer has value of enthalpy of fusion of peaks present below 130° C. and attributable to polyethylene sequences, such as HIFAX® KS080.

Abstract: The invention describes a cable with recyclable covering, particularly for transporting or distributing medium or high voltage energy, in which at least one covering layer is based on thermoplastic polymer material comprising a propylene homopolymer or a copolymer of propylene with ethylene or an &agr;-olefin other than propylene in mixture with a dielectric liquid. The cable of the invention possesses superior mechanical and electrical properties, including high dielectric strength, in particular enabling it to be used at high operating temperature.

Abstract: A cable includes at least one conductor and at least one covering layer. The at least one covering layer includes a thermoplastic polymer material. The polymer material includes a propylene homopolymer or a copolymer of propylene with an olefin comonomer. The olefin comonomer is ethylene, one or more &agr;-olefins other than propylene, or ethylene and one or more &agr;-olefins other than propylene. The homopolymer or copolymer has a melting point between 140° C. and 165° C., a melting enthalpy between 30 J/g and 80 J/g, a boiling diethyl ether soluble fraction less than or equal to 12 wt % and melting enthalpy less than or equal to 4 J/g, a boiling n-heptane soluble fraction between 15 wt % and 60 wt % and melting enthalpy between 10 J/g and 40 J/g, and a boiling n-heptane insoluble fraction between 40 wt % and 85 wt % and melting enthalpy greater than or equal to 45 J/g.

Abstract: Cable, in particular for medium-voltage or high-voltage electrical power transmission or distribution, for telecommunications or for data transmission, comprising a conductor and at least one coating layer based on a non-crosslinked polymer material comprising a heterogeneous copolymer with an ethylene-based elastomeric phase copolymerized with an &agr;-olefin and a propylene-based thermoplastic phase, in which the said elastomeric phase in the said heterogeneous copolymer is at least 45% by weight relative to the total weight of the heterogeneous copolymer, and the said heterogeneous copolymer is essentially free of crystallinity deriving from polyethylene sequences.