Stabilized telecommunication cable insulation composition

Details Stabilized telecommunication cable insulation composition Stabilized telecommunication cable insulation composition

H - Electricity

01

B

H01B 3/44 (2006.01) H01B 11/00 (2006.01)

Patent

CA 2363375

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-hydroxydrocinnamoyloxy)ethyl)isocyanurate together with one or more alkyhydroxyphenylalkanoil hydrazine metal deactivators is very effective towards providing oxidative stability for polyolefin wire insulation under these conditions.

L'isolement de fils à la polyoléfine pour des câbles de télécommunications garnis de graisses d'hydrocarbures consécutivement exposés dans une boîte d'interconnexion est particulièrement vulnérable aux conditions défavorables de chaleur, d'oxygène et d'humidité. La combinaison d'un ou de plusieurs antioxydants phénoliques primaires choisis dans le groupe constitué par N,N'-hexane-1,6-diylbis-(3-(3,5-di-tert-butyl-4-hydroxyphénylpropionamide)), tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate et tris(2-(3,5-di-tert-butyl-4-hydroxydrocinnamoyloxy)éthyl)isocyanurate ainsi que d'un ou plusieurs désactivateurs métalliques à base d'alkyhydroxyphénylalkanoyl hydrazine est très efficace pour conférer une stabilité d'oxydation pour l'isolement de fils à la polyoléfine dans lesdites conditions.

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