Hair dyeing composition
The invention relates to hair dyeing composition comprising (a) a dye of formula (1); (b) ant least one dye selected from the compounds of formulae (2); (3) and (4); wherein D is the radical of a diazo component of the formula (2 a ); (2 b ); (2 c ); (2 d ); (2 f ); (2 g ) or (2 h ). The invention also relates to the dyeing methods for dyeing keratinous fibers comprising such dyeing composition.
1. Hair dyeing composition comprising
(a) a dye of formula
(b) at least one dye selected from the compounds of formulae
wherein
D is the radical of a diazo component of the formula
K is the radical of a coupling component selected from aniline derivatives; phenol derivatives; naphthalene derivative;
X is —CH═ —O—; —S—; or —N(R 7 )—;
R 1 , R 2 , R 3 and R 4 independently from each other are hydrogen; or C 1 -C 4 alkyl;
R 5 and R 6 independently from each other are hydrogen; C 1 -C 4 alkyl; or C 1 -C 4 alkoxy;
R 7 and R 9 independently from each other are unsubstituted or OH—, C 1 -C 4 alkoxy-, halogen-, amino-, C 1 -C 4 -mono or -dialkylamino-substituted C 1 -C 4 alkyl; or phenyl;
R 8 is hydrogen; C 1 -C 4 alkyl; Cl; or nitro;
R 10 is hydrogen; C 1 -C 4 alkyl; Cl; nitro; amino; or C 1 -C 4 mono- or C 1 -C 4 dialkylamino;
R 11 is hydrogen; C 1 -C 4 alkyl; or CN;
R 12 is unsubstituted or OH—or CN-substituted C 1 -C 4 alkyl;
R 13 is hydrogen; or C 1 -C 4 alkyl;
R 14 and R 15 independently from each other are hydrogen; C 1 -C 4 alkyl; or C 1 -C 4 alkoxy; or
R 14 and R 15 together with the nitrogen and carbon atoms joining them together form a 5-or 6-membered ring;
R 16 and R 20 independently from each other are hydrogen; C 1 -C 4 alkyl; hydroxy; Cl; nitro; amino, C 1 -C 4 mono- or dialkylamino;
R 17 , R 18 , R 19 , R 21 , R 22 and R 23 independently from each other are hydrogen; or C 1 -C 4 alkyl;
R 24 is hydrogen; or C 1 -C 4 alkyl; and
An − is a colorless anion.
2. Composition according to claim 1 , wherein in formula (1) of component (a) R 1 , R 2 , R 3 and R 4 independently from each other are hydrogen; or C 1 -C 2 alkyl.
3. Composition according to claim 1 , wherein component (a) corresponds to formula
4. Composition according to claim 1 , wherein R 8 is hydrogen; or C 1 -C 4 alkyl.
5. Composition according to claim 1 , wherein in formulas (2a) and (2b)
R 7 and R 9 independently from each other are C 1 -C 4 alkyl; or phenyl.
6. Composition according to claim 1 , wherein in formula (2a)
X is —NR 7 ; and
R 8 is hydrogen; or C 1 -C 4 alkyl.
7. Composition according to claim 1 , wherein in formula (2)
K is the radical of formula
wherein
R 25 is hydrogen; hydroxy; C 1 -C 4 alkyl; C 1 -C 4 alkoxy; nitro; amino; mono-C 1 -C 4 alkylamino; di-C 1 -C 4 alkylamino; or a radical of formula
wherein
R 26 , R 27 and R 28 independently from each other are hydrogen; or C 1 -C 4 alkyl.
8. Composition according to claim 1 , wherein in formula (3)
K is the radical of formula
9. Composition according to claim 1 comprising
(a) a dye of formula (1), and
(b) at least one dye selected from the compounds of formulae
10. Composition according to claim 1 comprising
(a) a dye of formula (1), and
(b) at least one dye selected from the compounds of formulae
11. Composition according to claim 1 comprising
(a) a dye of formula (1), and
(b 1 ) the dyes of formulae
and
(b 2 ) the dye of formula
12. Composition according to claim 1 comprising as additional component a colorant selected from
(d) a direct dye;
(e) an oxidative dye;
(f) a disulfide dye;
(g) a pigment;
or mixtures thereof.
13. A method for dyeing keratinous fibers, comprising applying the dyeing composition according to claim 1 to said keratinous fibers.
14. A method for dyeing keratinous fibers, comprising the steps of
(a) treating the hair with a lightening composition,
(b) optionally treating the hair with a reductive wave agent; and
(c) treating the hair with a hair dyeing composition according to claim 1 .