| abstract |
The present invention relates to a polymer composition comprising a polyolefin, peroxide and a sulphur containing antioxidant, wherein said peroxide is present in an amount which corresponds to X mmol −O-O-/kg polymer composition and said sulphur containing antioxidant is present in an amount which corresponds to Y mmol −OH /kg polymer composition, wherein Y1 ≤ Y ≤ Y2, X ≤ 45 and 0.9 * Y + m ≤ X ≤ n − k * Y, wherein Y1 is 0.50 and Y2 is 10, and m is 0.8, n is 70 and k is 4.7; and wherein said polymer composition has a melt flow rate (MFR) of less than 1.7, and said polymer composition comprises less than 0.05 % by weight (wt%) 2,4-Diphenyl-4-methyl-1-pentene; a crosslinked polymer composition, and use thereof, a power cable insulation, a power cable, useful in high voltage (HV DC) and extra high voltage (EHV DC) direct current applications, and a method for reducing electrical conductivity of a crosslinked polymer composition. |