Pirelli Cavi E Sistemi S.p.a.

Pirelli Cavi S.p.a.

Prysmian Cavi E Sistemi Energia S.r.l.

Pirelli & C. S. P. A.

Pirelli Tyre S.p.a.

Copperweld Bimetallics LLC

Prysmian S.p.a.

Dynext S.r.l.

Franco Peruzzotti

Vincenzo Boffa

Luca Castellani

Diego Tirelli

Enrico Albizzati

Valeria Garcia

Cristiano Puppi

Andrea Pelizzoni

Michele Galbusera

Giacomo Stefano Roba

Luca Martinotto

Antonio Zaopo

Lidia Terruzzi

Claudio Bosisio

Mauro Maritano

Stefano Testi

Gianmario Lanfranconi

Giovanni Brandi

Luigia Rossiello

Massimiliano Pavan

Sabrina Fogliani

Raffaella Donetti

Emiliano Resmini

Paolo Liboi

Giuseppe Grassano

Antonio Monterosso

Marcello Del Brenna

Eduardo Grizante Redondo

Gianni Miramonti

Massimo Marini

Elio Ganci

Luis Jos&egrave; Dacal

Antonio Pezzoni

Dustin Fox

Yance Syarif

Matteo Di Biase

Luis Jos&eacute; Dacal

Fabio Roncella

A hanger wire for contact wires of railway electrical lines may include: first wires including copper or a first alloy of copper; and second wires including a steel core coupled with a layer of copper or a second alloy of copper. An overhead contact line suitable to transmit electric power to a locomotive may include: at least one conductor element connected to a high voltage electric energy distribution network; at least one suspension wire fastened to a series of supporting poles arranged along the overhead contact line; and a plurality of hanger wires connecting the at least one conductor element to the at least one suspension wire. The hanger wires may include: first wires including copper or a first alloy of copper; and second wires including a steel core coupled with a layer of copper or a second alloy of copper.

Hanger wires for contact wires of railway electrical lines

Cable including at least one core comprising at least one transmissive element and at least one coating layer made of a coating material, wherein said coating material comprises: &#x2014;at least one polyethylene; &#x2014;at least one non-ionic surfactant having the following general formula (I): wherein: &#x2014;Q is a p-functional group; &#x2014;R is a linear or branched C-Calkyl group, preferably a methyl group; &#x2014;Ris a hydrogen atom or a linear or branched C-Calkyl group, preferably a hydrogen atom; &#x2014;n is an integer from 2 to 5 inclusive, preferably 2; &#x2014;x is an integer from 5 to 500 inclusive, preferably from 10 to 300 inclusive; &#x2014;y is an integer from 0 to 500 inclusive, preferably from 10 to 300 inclusive; &#x2014;z is an integer from 0 to 500 inclusive, preferably from 10 to 300 inclusive; &#x2014;y+z is not lower than 2; &#x2014;p is an integer from 1 to 4 inclusive, preferably 1 or 4; provided that, when the transmissive element is an electrical energy transmissive element, said at least one coating layer is an external sheathing layer. Preferably, said coating layer is an external sheathing layer having a protective function.

Cable with environmental stress cracking resistance

A tire for vehicle wheels, includes at least one structural element obtained by crosslinking a crosslinkable elastomeric composition including at least one vulcanized rubber in a subdivided form surface treated with at least one oxidizing agent; at least one diene elastomeric polymer, and at least one sulfur-based vulcanizing agent. A surface treatment process of vulcanized rubber and crosslinkable elastomeric composition is obtained with the vulcanized rubber in a subdivided form surface treated with at least one oxidizing agent.

Tire for vehicle wheels comprising crosslinked elastomeric composition

A method for making a sound-insulating load-bearing floor, includes the following steps: applying a sound-insulating material over a load-bearing floor as to form a continuous coating layer; allowing the continuous coating layer to harden; applying a covering floor over said hardened continuous coating layer; wherein the sound-insulating material includes: 40% by weight to 95% by weight, preferably 60% by weight to 90% by weight, with respect to the total weight of the sound-insulating material, of at least one rubber in a subdivided form; 5% by weight to 60% by weight, preferably 10% by weight to 40% by weight, with respect to the total weight of the sound-insulating material, of at least one binding agent including: a first, component including at least one organic compound having at least one acid functional group or a derivative thereof, the first component having a Brookfield viscosity, measured at 23&#xb0; C., of 0.1 Pa&#xb7;s to 100 Pa&#xb7;s, preferably 0.2 Pa&#xb7;s to 50 Pa&#xb7;s, more preferably 0.5 Pa&#xb7;s to 20 Pa&#xb7;s; and a second component including at least one metal oxide or hydroxide.

Method for making a sound-insulating load-bearing floor

A cable including at least one core having at least one transmissive element and at least one coating layer made from a coating material, wherein the coating material has at least a first polyethylene having a density not higher than 0.940 g/cm, preferably not lower than 0.910 g/cm, more preferably 0.915 g/cmto 0.938 g/cm, and a Melt Flow Index (MFI), measured at 190&#xb0; C. with a load of 2.16 Kg according to ASTM D1238-00 standard, of 0.05 g/10' to 2 g/10&#x2032;, preferably 0.1 g/10&#x2032; to 1 g/10&#x2032;; the first polyethylene being obtained from a waste material; at least a second polyethylene having a density higher than 0.940 g/cm, preferably not higher than 0.970 g/cm, more preferably 0.942 g/cmto 0.965 g/cm. Preferably, the coating layer is a cable external layer having a protective function.

Cable with a coating layer made from a waste material

A process for producing a rubber powder from a vulcanized rubber material by the steps of: a) feeding a grinding device with the vulcanized rubber material; b) contacting the vulcanized rubber material with at least one liquid coolant; c) introducing at least one grinding aid additive into the grinding device; d) operating the grinding device so as to grind the vulcanized rubber material to form a rubber powder, and e) discharging the rubber powder from the extruder.

Pulverization process of a vulcanized rubber material

A thermoplastic material has a) from 5% weight to 95% by weight, preferably from 10% by weight to 60% by weight, of vulcanized rubber in a subdivided form; b) from 5% by weight to 95% by weight, preferably from 40% by weight to 90% by weight, of at least one heterophase copolymer having a thermoplastic phase made from a propylene homopolymer or copolymer and an elastomeric phase made from a copolymer of ethylene with an &#x3b1;-olefin, preferably with propylene; c) from 0% by weight to 90% by weight, preferably from 0% by weight to 50% by weight, of at least one &#x3b1;-olefin homopolymer or copolymer different from b); the amounts of a), b) and c) being expressed with respect to the total weight of a)+b)+c). The thermoplastic material shows improved mechanical properties, in particular, improved elongation at break.

Thermoplastic material comprising a vulcanized rubber in a subdivided form

Optical fiber having a glass portion; at least one protective coating of thermoplastic material having at least one thermoplastic elastomer; the thermoplastic material having the following characteristics: a modulus of elasticity value at +25&#xb0; C. lower than 150 MPa, preferably at least 10 Mpa, more preferably higher than 20 Mpa, and a Vicat point higher than 85&#xb0; C., preferably higher than 120&#xb0; C., more preferably lower than 350&#xb0; C. Preferably, the coating is a single protective coating directly positioned onto the glass portion.

Optical fiber with thermoplastic material based coating

Self-extinguishing cable coated with a flame-retardant composition having: (a) an ethylene homopolymer or copolymer having a density of from 0.905 to 0.970 g/cm, and being selected from: ethylene homopolymers: copolymers of ethylene with an alpha-olefin; copolymers of ethylene with an ethylenically unsaturated ester; or mixtures thereof; (b) a copolymer of ethylene with at least one alpha-olefin, and optionally with a diene, said copolymer (b) having a density of from 0.860 to 0.904 g/cm, and having a composition distribution index greater than 45%; (c) natural magnesium hydroxide in an amount such as to impart flame-retardant properties; wherein at least one of the polymeric components (a) and (b) contains hydrolyzable organic silane groups grafted onto the polymer chain. The silane groups are preferably introduced during compounding of the flame-retardant composition by adding to the polymer mixture a suitable silane compound and a radical initiator.

Low-smoke self-extinguishing electrical cable and flame-retardant composition used therein

Process for producing cables, in particular electrical cables for low-voltage power transmission or for telecommunications, which have self-extinguishing properties and produce a low level of fumes, in which the flame-retardant coating layer is obtained by extruding a flame-retardant composition comprising a polymer base, an inorganic flame-retardant filler and a dehydrating agent. The presence of the dehydrating agent makes it possible to obtain a smooth and uniform flame-retardant layer which is virtually free of pores.

Process for producing self-extinguishing cables with low-level production of fumes, and flame-retardant compositions used therein

The present invention is an improved electric insulation composition of a polymer and an additive that reduces water treeing due to electrical aging in water. The polymer additive is a hydrophobic/hydrophilic material with good compatibility with the polymer. The present invention is also a method of preventing electrical breakdown due to the formation of water trees by forming electrical cables with the insulation containing the disclosed anti-treeing additives.

Method and electrical apparatus comprising a water tree resistant insulating composition

Electrical cable having at least one conducting element, at least one polyolefin-based insulating covering layer, in which said insulating covering layer has at least one voltage stabilizer, said voltage stabilizer being a benzophenone substituted with at least one group selected from alkyl, arylalkyl and alkylaryl wherein said group: a) is linked to a phenyl ring of the benzophenone directly or via an oxygen bridge (-O-); b) contains, optionally, one or more oxygen bridges (-O-); and c) is optionally linked to a phenyl ring of at least one or other benzophenone group, provided that when said at least one group is an alkyl, optionally substituted, the carbon atom of said alkyl which is directly linked to a phenyl ring of said benzophenone is tertiary. A polyolefin-based insulating composition having at least one voltage stabilizer as described above.

Cable, in particular for transport or distribution of electrical energy and insulating composition

A flame-retardant composition includes a crystalline propylene homopolymer or copolymer, a copolymer of ethylene with at least one alpha-olefin having from 3 to 12 carbon atoms, and optionally with a diene, the copolymer of ethylene being characterized by a composition distribution index greater than 45%, the index being defined as a weight percentage of copolymer molecules having an alpha-olefin content within 50% of an average total molar content of alpha-olefin, and natural magnesium hydroxide in amounts such as to impart flame-retardant properties. A related cable with self-extinguishing properties includes a conductor and a flame-retardant coating. The flame-retardant coating includes the flame-retardant composition. A related method for manufacturing a cable having improved mechanical properties and enhanced fire resistance includes the steps of preparing a polymer mixture with flame-retardant properties and extruding the mixture on a conductor optionally pre-coated with an insulating layer, in order to obtain a flame-retardant coating.

Cable with self-extinguishing properties and flame-retardant composition

The present invention is an improved electric insulation composition of a polymer and an additive that reduces water treeing due to electrical aging in water. The polymer additive is a hydrophobic/hydrophilic material with good compatibility with the polymer. The present invention is also a method of preventing electrical breakdown due to the formation of water trees by forming electrical cables with the insulation containing the disclosed anti-treeing additive.

Water tree resistant insulating composition

Cables, in particular electrical cables for low-voltage power transmission or for telecommunications, or alternatively for data transmission or mixed power/telecommunications cables, which have self-extinguishing properties and produce a low level of fumes, wherein a coating layer based on a polymer material and on a flame-retardant inorganic filler is present. The polymer material includes a heterophase copolymer having an elastomeric phase based on ethylene copolymerized with an &agr;-olefin and a thermoplastic phase based on propylene. The elastomeric phase is at least 45% by weight relative to the total weight of the heterophase copolymer and the heterophase copolymer is substantially devoid of crystallinity deriving from polyethylene sequences.

Self-extinguishing cable with low-level production of fumes, and flame-retardant composition used therein

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Legnano, Italy

Franco Peruzzotti