| 摘要 |
Symmetrical cationic tetraazo compounds are new. Symmetrical cationic tetraazo compounds of formula Dye1-L-Dye1 (I) are new. Dye1 : group of formula (V); W1heteroaromatic radical selected from formulae (IIa) - (IIc); W2carbon-based aromatic group having of formula (III); W3carbon-based aromatic group of formula (IV); L : 1-60C, preferably 2-40C, especially 2-20C optionally saturated, linear or branched, cyclic or non-cyclic, (hetero)aromatic or non-(hetero) aromatic, optionally substituted hydrocarbon-based chain, optionally bearing at least one cationic charge, optionally interrupted with at least one hetero atom or group comprising at least one hetero atom selected from O, N or S; R1linear or branched, optionally saturated, aromatic or non-aromatic, optionally substituted 1-16C hydrocarbon-based chain, which can form at least one 3- - 7-membered carbon-based rings, optionally interrupted with at least one hetero atoms selected from O, N and S; R2, R3 and R4linear or branched, optionally saturated, aromatic or non-aromatic (optionally substituted 1-16C hydrocarbon-based chain, which can form at least one 3- - 6- membered carbon-based rings, optionally interrupted with at leat one hetero atoms or with at least one group is bearing at least one hetero atom selected from O and N); OH; 1-4C alkoxy; 2-4C (poly)hydroxyalkoxy; alkoxycarbonyl group (RO-CO-); alkylcarbonyloxy radical (RCO-O-); amino; amino substituted with at least one 1-4C alkyl, optionally bearing at least one OH (where the two alkyl radicals possibly forming, with the N atom to which they are attached, a 5- or 6-membered heterocycle optionally bearing another hetero atom from N, O or S); alkylcarbonylamino group (RCO-NR-); carbamoyl group ((Ra)2N-CO); ureido group ((Ra)2N-CO-NR'-); sulfonamide ((Ra)2N-SO2-); alkylsulfonylamino (RaSO2-NR'-); guanidinium ((R')2N-C(=NH2+>)-NRa-); nitro; cyano or halo (preferably Cl or F); R : 1-4C alkyl; Ra and R' : H or 1-4C alkyl; m : 0 - 4;and e : 0 - 2. L not comprises any diazo, nitro, nitroso or peroxide groups. L may be terminated at one and the other of its ends with at least one hetero atom or group comprising at least one hetero atom, preferably O, N or S. R1 not comprising any nitro, nitroso, peroxide or diazo bonds. R1 Is directly attached to the nitrogen atom (quaternized or non-quaternized) of the heteroaromatic ring via a carbon atom. Two radicals R2, two radicals R3 or two radicals R4, borne by adjacent carbon atoms, can form, with the carbon atom to which each is attached, a fused ring. The bond a derived from formulae (IIa) - (IIc), (III) or IV links the groups W1, W2 and W3 to the azo group; in the case of formulae (IIa) and (IIc), and when two radicals R2 borne by two adjacent carbon atoms form an aromatic ring, the bond a is link the group W1 to the azo group via the aromatic ring. The bond a' derived from (IV) links the group W3 to the linker L. The electrical neutrality of (I) is ensured by at least one anion. Independent claims are included for the following: (1) dye composition (C1) comprising, in a medium for dyeing keratin fibers, as direct dye, at least one (I); (2) dyeing keratin fibers involving placing (C1) in contact with the wet or dry fibers; and (3) multi-compartment device in which a first compartment contains (C1) and a second compartment contains an oxidizing composition. [Image] [Image]
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