Cable, in particular for transport or distribution of...

H - Electricity – 01 – B

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H01B 3/44 (2006.01) C08K 5/07 (2006.01) C08K 5/132 (2006.01) C08L 101/12 (2006.01) H01B 9/00 (2006.01)

Patent

CA 2380309

Electrical cable comprising at least one conducting element, at least one polyolefin-based insulating covering layer, in which the said insulating covering layer comprises at least one voltage stabilizer, in which the said voltage stabilizer is a benzophenone substituted with at least one group selected from alkyl, arylalkyl and alkylaryl and in that the said group: a) is linked to a phenyl ring of the benzophenone directly or via an oxygen bridge (-O-); b) contains, optionally, one or more oxygen bridges (-O-); and c) is optionally linked to a phenyl ring of at least one other benzophenone group, provided that when said at least one group is an alkyl, optionally substituted, the carbon atom of the said alkyl which is directly linked to a phenyl ring of the said benzophenone is tertiary. A polyolefin-based insulating composition comprising at least one voltage stabilizer as defined above.

L'invention concerne un câble électrique comprenant au moins un élément conducteur, au moins une couche de revêtement isolante à base de polyoléfine, laquelle couche comprend au moins un stabilisateur de tension. Ce stabilisateur de tension est un benzophénone substitué par au moins un groupe choisi entre alkyle, arylalkyle et alkylaryle. Ledit groupe: a) est lié à un noyau phényle du benzophénone directement ou via un pont d'oxygène (-O-); b) contient, éventuellement, un ou plusieurs ponts d'oxygène (-O-); et c) est éventuellement lié à un noyau phényle d'au moins un autre groupe benzophénone, à la condition que lorsque ce groupe est un alkyle, éventuellement substitué, l'atome de carbone de cet alkyle qui est directement lié à un noyau phényle dudit benzophénone soit tertiaire. L'invention concerne également une composition d'isolation à base de polyoléfine comprenant au moins un stabilisateur de tension tel que défini ci-dessus.

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