Patent ID: 6436536
Filing Date: 2002-08-20
Classification: C08K,C08L,H01B,Y10T

Abstract:
An electric cable comprising at least one conducting core and at least one electrically insulating coating obtained by extruding onto said conducting core a polymeric composition comprising an effective amount of a peroxide cross-linking agent and subsequently cross-linking the composition vie peroxide, said composition further comprising a polyolefin polymeric base consisting essentially of an ethylene polymer and, in parts by weight relative to the total weight thereof amounts:from 0.5 to 15 parts of ester groups; and from 0.01 to 5 parts of epoxy groups, said amounts of ester and epoxy groups, in combination, being such as to reduce the formation of water trees within the insulation coating after electric ageing in water, wherein said ester and epoxy groups are provided by an ethylene/acrylic ester/glycidyl methacrylate terpolymer having a Melt Index of from 0.1 g/10â€² to 40 g/10â€².