Tree resistant insulation compositions

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/00 (2006.01) C08K 3/22 (2006.01) H01B 3/44 (2006.01) H01B 9/00 (2006.01)

Patent

CA 2695603

Insulation compositions for electric power cables having a polyolefin base polymer and an additive comprising either low molecular weight wax or polyethylene glycol (PEG) and optionally further comprising one or more hindered amine light stabilizers, amine antioxidants and other antioxidant blends are disclosed. Also disclosed are insulation compositions comprising a C2 to C8 alpha olefin in combination with a polyethylene homopolymer together with, optionally, one or more hindered amine light stabilizer and a liquid cresol antioxidant.

La présente invention concerne des compositions isolantes destinées à des câbles électriques comprenant un polymère à base de polyoléfine et un additif comprenant soit une cire de faible poids moléculaire, soit du polyéthylène glycol (PEG) et comprenant en outre facultativement un ou plusieurs photostabilisants à base d'amine encombrée, des antioxydants aminés et d'autres mélanges d'antioxydants. L'invention concerne également des compositions isolantes comprenant une alphaoléfine en C2 à C8 en combinaison avec un homopolymère de polyéthylène conjointement avec, facultativement, un ou plusieurs photostabilisants à base d'amine encombrée et un antioxydant à base de crésol liquide.

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