Cable, in particular for transport or distribution of electrical energy and insulating composition

Polyolefin-based insulating composition comprising at least one voltage stabilizer, characterized in that 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, and with the proviso that said substituted benzophenone is different from 3- or 4-metoxy-benzophenone.

Composition according to claims from 6 to 9, characterized in that the said C1-C30 alkoxy is

• a group of formula —O—CpH2p+1 where p is an integer ranging from 1 to 30, or
• a chain of general formula
• —O—(CH2O)q(CH2CH2O)r(CH(CH3)CH2O)s(CH2CH(CH3)O)t—R6
• in which R6 is a C1-C4 alkyl and q, r, s and t are 0 or an integer ranging from 1 to 30, provided that the total number of carbon atoms ranges from 2 to 30.