COMPOSICION ESTABILIZADA DE AISLAMIENTO DE CABLES DE TELECOMUNICACION

Una construcción de cable estabilizada, que comprende (i) una pluralidad de conductores eléctricos aislados que tienen intersticios entre sí, comprendiendo dicho aislante (a) una o mas poliolefinas, y (b) uno o mas antioxidantes primarios elegidos del grupo de N,N''-hexan-1,6-diilbis-(3-(3,5-di-ter-butil-4-hidroxifenilpropionamida)), tris(3,5-di-ter-butil-4-hidroxibencil)-isocianurato y tris(2-(3,5-di-ter-butil-4-hidroxihidrocina-moiloxi)etil)isocianurato, y (c) uno o mas desactivadores metálicos elegidos entre alquilhidroxifenilalcanoil hidracinas, y (ii) grasa de relleno de cable hidrocarbúrica dentro de los intersticios, y (iii) una vaina que circunda los componentes (i) y (ii). Polyolefin wire insulation in hydrocarbon grease filled telecommunications cable which is subsequently exposed in an outdoor interconnection box is especially vulnerable to the adverse conditions of heat, oxygen and moisture. The combination of one or more primary phenolic antioxidants selected from N,N'-hexane-1,6-diylbis-(3-(3,5-di-tert-butyl-4-hydroxyphenylpropionamide)), tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate and tris(2-(3,5-di-tert-butyl-4-hydroxyhydrocinnamoyloxy)ethyl)isocyanurate together with one or more alkylhydroxyphenylalkanoyl hydrazine metal deactivators is very effective towards providing oxidative stability for polyolefin wire insulation under these conditions.