Abstract: An electric cable, has an electrical conductor surrounded by a cured electrically-insulating layer obtained from a curable composition with a polymer matrix, the polymer matrix having one or more polyolefins and a polyvinyl acetal as agent for reducing the formation of water treeing, the quantity of PVA being no more than 10% by weight in the composition.

Abstract: An electric cable is provided having a conductor element, and successively around the conductor element an electrically-insulating layer; a metal screen and an outer protective sheath. The cable has an extruded outer layer surrounding the outer protective sheath, the extruded outer layer being directly in contact with the outer protective sheath, and being obtained from a composition containing more than 50.0 parts by weight of apolar polymer per 100 parts by weight of polymer in the composition, together with an electrically-conductive filler.

Abstract: An electric cable, has an electrical conductor surrounded by a cured electrically-insulating layer obtained from a curable composition with a polymer matrix, the polymer matrix having one or more polyolefins and a polyvinyl acetal as agent for reducing the formation of water treeing, the quantity of PVA being no more than 10% by weight in the composition.

Abstract: The present invention provides an electric cable comprising a conductor element, and successively around said conductor element: an electrically-insulating layer; a metal screen; and an outer protective sheath; the cable further comprising an extruded outer layer surrounding the outer protective sheath, said extruded outer layer being directly in contact with said outer protective sheath, and being obtained from a composition containing more than 50.0 parts by weight of apolar polymer per 100 parts by weight of polymer in the composition, together with an electrically-conductive filler.

Abstract: A method of extruding a mixture made of a granulate, chips, or powder, etc. of a first thermoplastic and a second thermoplastic is described, the melting range of the first thermoplastic differing from the melting range of the second thermoplastic, using an extruder which has a heatable housing and a screw, which has an intake zone, a melting zone, a delivery zone, and a hole, extending from the intake zone up to the delivery zone, into which a temperature control media may be introduced, in which the temperature control medium causes heating of the screw in the intake zone to a temperature below the melting range of the thermoplastic having the lower melting range and temperature control of the screw in the delivery zone to a temperature which lies between the melting range of the first thermoplastic and the second thermoplastic.

Abstract: In a process for the production of conducting wires coated with cross-linked polyethylene in which a granulate made of polyethylene is coated with a fluid cross-linking agent, the coated granulate is melted in an extruder and extruded onto the electrical conducting wire, and the extruded film is cross-linked by being heated to a temperature over the decomposition temperature of the cross-linking agent, a mixture of granulate, meal, or powder made of a polyethylene homopolymer and a polyethylene copolymer is coated with the cross-linking agent and stabilizer, with the portion of copolymer in the coating on the cable lying between 1 and 8 weight percent.