Flame retardant, low smoke, cold resistant electric cable

Abstract

The present invention concerns an electric cable () comprising: —an electric conductor () surrounded with an electrically insulating layer () made from a first polymer composition comprising: (a) polyvinyl chloride as a first polymer matrix, (b) an amount up to 45 phr of a plasticizing system consisting of a phthalate plasticizer and a second plasticizer selected from: dialkyl-adipate, dialkyl-sebacate or dialkyl-azelate, wherein the alkyl group contains from 4 to 10 carbon atoms; the first polymer composition having a limiting oxygen index (LOI) up to 30%; and—an outer sheath (), surrounding the insulating layer (), made from a second polymer composition comprising: (i) a halogen-free second polymer matrix; and (ii) a halogen-free inorganic flame-retardant filler in amount suitable to impart flame retardant properties to the outer sheath (). The cable of the present invention exhibits flame retardancy, low smoke and cold resistance properties and is particularly suitable for low voltage power transmission or for telecommunications.