Electrical cable, particularly for high voltage direct...

H - Electricity – 01 – B

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H01B 7/02 (2006.01) C08F 8/00 (2006.01) C08F 8/46 (2006.01) C08K 5/00 (2006.01) H01B 3/44 (2006.01) H01B 9/00 (2006.01)

Patent

CA 2433140

Electrical cable, particularly for high voltage direct current transmission, comprising at least one conductor and at least one extruded insulating coating layer consisting of a polymeric composition comprising a polyethylene modified with at least one compound of formula (I): in which R represents H or CH~3; R~1 represents a linear or branched, preferably linear, C~1-C~8 alkylene group; R~2 represents OH; a group OR3 in which R~3 represents a linear or branched C~1-C~4 alkyl group; a group NR~4R~5 in which R~4 and R~5, which may be identical or different, represent H, or a linear or branched C~1-C~4 alkyl group; and related insulating composition.

L'invention concerne un câble électrique, en particulier pour la transmission de courant continu haute tension. Ce câble comprend au moins un conducteur et au moins une couche de revêtement isolant extrudé se composant d'une composition polymère comprenant un polyéthylène modifié avec au moins un composé selon la formule générale (I). Dans cette dernière, R représente H ou CH3; R1 représente un groupe alkylène C1-C8 linéaire ou ramifié de préférence linéaire ; R2 représente OH; un group OR3 dans lequel R3 représente un groupe alkyle C1-C4 linéaire ou ramifié; un groupe NR4R5 dans lequel R4 et R5, qui peuvent être identiques ou différents, représentent H, ou un groupe alkyle C1-C4 linéaire ou ramifié ; et une composition isolante apparentée.

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