Multiphase polymeric composition useful for preparing cable...

Details Multiphase polymeric composition useful for preparing cable... Multiphase polymeric composition useful for preparing cable...

C - Chemistry, Metallurgy

08

L

C08L 23/10 (2006.01) H01B 3/44 (2006.01)

Patent

CA 2743482

Cable insulation layers having excellent mechanical and electrical properties are prepared from a composite free of plasticizer and comprising a heterogeneous, polymeric composition comprising (A) a polypropylene matrix, and (B) a propylene copolymer dispersed within the matrix and (i) comprising more than 80 weight percent (wt%) of units derived from propylene, and (ii) having a weight average particle size of less of than 1 micron (µm). The insulation layer is not only environmental friendly due to the lack of placticizer, but it also maintains its physical and operational integrity at temperatures of at least 90°C.

Selon linvention, des couches d'isolation de câble ayant d'excellentes propriétés mécaniques et électriques sont préparées à partir d'un composite exempt de plastifiant et comprenant une composition polymère, hétérogène contenant (A) une matrice de polypropylène, et (B) un copolymère du propylène dispersé à l'intérieur de la matrice et (i) comprenant plus de 80 pour cent en poids (% en poids) d'unités provenant du propylène, et (ii) ayant une dimension de particule moyenne en poids inférieure à 1 micron (µm). La couche d'isolation est non seulement respectueuse de l'environnement en raison du manque de plastifiant, mais encore conserve son intégrité physique et opérationnelle à des températures d'au moins 90 °C.

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