Dye composition comprising a cationic meta-phenylenediamine

1. A cationic meta-phenylenediamine compound of formula (I), acid addition salts thereof, and solvates thereof:

wherein:

R is chosen from a hydrogen or halogen atom; a C 1 -C 4 alkyl group; a carboxyl group, or a (C 1 -C 4 )alkoxycarbonyl group;

R1 is chosen from a C 1 -C 10 (hydroxy)alkyl group, optionally interrupted with one or more non-adjacent oxygen atoms or non-adjacent NR′ substituents, substituted by a cationic CAT group;

R2 is chosen from a hydrogen atom or a C 1 -C 4 (hydroxy)alkyl group;

R1 and R2 may optionally form, together with the atom that bears them, a cationic heterocycle with 5 to 8 members;

R′ is chosen from a hydrogen atom or a C 1 -C 4 (hydroxy)alkyl group; and

An- is chosen from an anion or a mixture of anions which are organic or inorganic and cosmetically acceptable.

2. The compound according to claim 1 , wherein the cationic CAT group is chosen from straight or branched or heterocyclic groups comprising a quaternary ammonium of the type —N + RaRbRc,

wherein Ra, Rb and Rc are independently chosen from a C 1 -C 6 alkyl group which may optionally be substituted by a hydroxyl; and

Ra and Rb may optionally form a 5- to 10-membered heterocycle, in which case Rc is a C 1 -C 6 alkyl group, optionally substituted by a hydroxyl group or a C 1 -C 4 (hydroxy)alkyl group.

3. The compound according to claim 2 , wherein Ra, Rb, Rc independently represent a C 1 -C 2 alkyl group, optionally substituted by a hydroxyl group.

4. The compound according to claim 2 , wherein the cationic CAT group is chosen from trimethylammonium, triethylammonium, dimethylethylammonium, diethylmethylammonium, diisopropylmethylammonium, hydroxyethyldiethylammonium, imidazolium, pyridinium, piperazinium, pyrrolidinium, morpholinium, pyrimidinium, thiazolium, benzimidazolium and piperidinium groups, or mixtures thereof.

5. The compound according to claim 1 , wherein R represents a hydrogen atom.

6. The compound according to claim 1 , wherein R2 represents a hydrogen atom or a C 1 -C 4 alkyl group.

7. The compound according to claim 1 , wherein R1 represents a C 1 -C 10 alkyl group substituted by a cationic CAT group.

8. The compound according to claim 1 , wherein R1 represents a C 1 -C 10 alkyl group interrupted with an oxygen atom or an NR′ substituent, substituted by a cationic CAT group.

9. The compound according to claim 7 , wherein CAT designates a cationic group chosen from trimethylammonium, triethylammonium, dimethylethyl ammonium, diethylmethylammonium, diisopropylmethylammonium, diethylpropyl ammonium, hydroxyethyl diethyl ammonium, di-beta-hydroxyethylmethylammonium, tri-beta-hydroxyethylammonium groups, or mixtures thereof.

10. The compound according to claim 1 , wherein CAT designates a 5- to 8-membered heterocyclic group of which one of the members is a quaternary ammonium,

said heterocycle optionally substituted by one or more groups independently chosen from a hydroxyl group or a C 1 -C 4 (hydroxy)alkyl group.

11. The compound according to claim 10 , wherein CAT designates a pyrrolidine, piperidine, or piperazine group, optionally substituted by a cationic —N + RaRbRc group,

wherein Ra, Rb, Rc are independently chosen from a C 1 -C 6 alkyl group, optionally substituted by a hydroxyl group.

12. The compound according to claim 11 , wherein CAT designates a pyrrolidine or piperidine group, optionally substituted by a tri(C 1 -C 4 )alkyl ammonium group.

13. The compound according to claim 1 , wherein R1 and R2 form, together with the atom that bears them, a cationic 5- to 8-membered heterocycle.

14. The compound according to claim 13 , wherein R1 and R2 form, together with the nitrogen atom that bears them, a 5- to 8-membered heterocyclic group of which one member is a quaternary ammonium, said heterocycle optionally substituted by one or more groups independently chosen from a hydroxyl group or a C 1 -C 4 (hydroxy)alkyl group.

15. The compound according to claim 1 , wherein R1 and R2 form, together with the nitrogen atom that bears them, a pyrrolidine or piperidine group, substituted by a cationic —N + RaRbRc group,

wherein Ra, Rb, Rc are independently chosen from C 1 -C 6 alkyl groups optionally substituted by a hydroxyl group,

said cationic group being chosen from trimethylammonium, triethylammonium, dimethylethyl ammonium, or diethylmethylammonium groups.

16. The compound according to claim 1 , chosen from:

2-[(2,4-diaminophenyl)amino]-N,N,N-trimethylethanaminium, An-,

3-[(2,4-diaminophenyl)amino]-N,N,N-trimethylpropan-1-aminium, An-,

4-{2-[(2-amino-5-hydroxyphenyl)amino]ethyl}-1,1-dimethylpiperazin-1-ium, An-,

4-{3-[(2,4-diaminophenyl)amino]propyl}-1,1-dimethylpiperazin-1-ium, An-,

4-{2-[(2,4-diaminophenyl)amino]ethyl}-1-(2-hydroxyethyl)-1-methylpiperazin-1-ium, An-,

1-{2-[(2,4-diaminophenyl)amino]ethyl}-1-methylpiperidinium, An-,

1-{3-[(2,4-diaminophenyl)amino]propyl}-1-methylpiperidinium, An-,

1-{2-[(2,4-diaminophenyl)amino]ethyl}-1-methylpyrrolidinium, An-,

1-{3-[(2,4-diaminophenyl)amino]propyl}-1-methylpyrrolidinium, An-,

4-{2-[(2,4-diaminophenyl)amino]ethyl}-4-methylmorpholin-4-ium, An-,

4-{3-[(2,4-diaminophenyl)amino]propyl}-4-methylmorpholin-4-ium, An-,

1-{2-[(2,4-diaminophenyl)amino]ethyl}-3-methyl-1H-imidazol-3-ium, An-,

1-{3-[(2,4-diaminophenyl)amino]propyl}-3-methyl-1H-imidazol-3-ium, An-,

2-[(2,4-diaminophenyl)(methyl)amino]-N,N,N-trimethylethanaminium, An-,

3-[(2,4-diaminophenyl)(methyl)amino]-N,N,N-trimethylpropan-1-aminium, An-,

1-{2-[(2,4-diaminophenyl)(methyl)amino]ethyl}-1-methylpyrrolidinium, An-,

1-{3-[(2,4-diaminophenyl)(methyl)amino]propyl}-1-methylpyrrolidinium, An-,

1-{2-[(2,4-diaminophenyl)(methyl)amino]ethyl}-1-methylpiperidinium, An-,

1-{3-[(2,4-diaminophenyl)(methyl)amino]propyl}-1-methylpiperidinium, An-,

4-{2-[(2,4-diaminophenyl)(methyl)amino]ethyl}-4-methylmorpholin-4-ium, An-,

4-{3-[(2,4-diaminophenyl)(methyl)amino]propyl}-4-methylmorpholin-4-ium, An-,

1-(2,4-diaminophenyl)-N,N,N-trimethylpyrrolidin-3-aminium, An-,

4-(2,4-diaminophenyl)-1,1-dimethylpiperazin-1-ium, An-,

4-(2,4-diaminophenyl)-1-(2-hydroxyethyl)-1-methylpiperazin-1-ium, An-,

4-(2,4-diaminophenyl)-1,1-bis(2-hydroxyethyl)piperazin-1-ium, An-,

1-(2,4-diaminophenyl)-N,N,N-trimethylpiperidin-4-aminium, An-,

1-[2-({2-[(2,4-diaminophenyl)amino]ethyl}amino)ethyl]-1-methylpiperidinium, An-,

1-[2-({2-[(2,4-diaminophenyl)amino]ethyl}amino)ethyl]-1-methylpyrrolidinium, An-,

1-[2-({2-[(2,4-diaminophenyl)amino]ethyl}amino)ethyl]-3-methyl-1H-imidazol-3-ium, An-,

4-[2-({2-[(2-amino-5-4-[2-({2-[(2,4-diaminophenyl)amino]ethyl}amino)ethyl]-4-methylmorpholin-4-ium, An-,

3-({2-[(2,4-diaminophenyl)amino]ethyl}amino)-N,N,N-trimethylpropan-1-aminium, An-,

2-{2-[(2,4-diaminophenyl)amino]ethoxy}-N,N,N-trimethylethanaminium, An-,

3-{2-[(2,4-diaminophenyl)amino]ethoxy}-N,N,N-trimethylpropan-1-aminium, An-,

1-(2-{2-[(2,4-diaminophenyl)amino]ethoxy}ethyl)-1-methylpiperidinium, An-,

1-(2-{2-[(2,4-diaminophenyl)amino]ethoxy}ethyl)-1-methylpyrrolidinium, An-,

4-(2-{2-[(2,4-diaminophenyl)amino]ethoxy}ethyl)-1,1-dimethylpiperazin-1-ium, An-,

4-(3-{2-[(2,4-diaminophenyl)amino]ethoxy}propyl)-1,1-dimethylpiperazin-1-ium, An-,

4-(2-{2-[(2,4-diaminophenyl)amino]ethoxy}ethyl)-4-methylmorpholin-4-ium, An-,

4-(3-{2-[(2,4-diaminophenyl)amino]ethoxy}propyl)-4-methylmorpholin-4-ium, An-,

1-(2-{2-[(2,4-diaminophenyl)amino]ethoxy}ethyl)-3-methyl-1H-imidazol-3-ium, An-,

1-(3-{2-[(2,4-diaminophenyl)amino]ethoxy}propyl)-3-methyl-1H-imidazol-3-ium, An-,

and salts, solvates, isomers thereof, and mixtures thereof.

17. A composition for dyeing keratin fibers comprising, in a medium that is suitable for dyeing keratin fibers, at least one compound chosen from cationic meta-phenylenediamine compounds of formula (I), acid addition salts thereof, and solvates thereof:

wherein:

R is chosen from a hydrogen or halogen atom; a C 1 -C 4 alkyl group; a carboxyl group, or a (C 1 -C 4 )alkoxycarbonyl group;

R1 is chosen from a C 1 -C 10 (hydroxy)alkyl group, optionally interrupted with one or more non-adjacent oxygen atoms or non-adjacent NR′ substituents, substituted by a cationic CAT group;

R2 is chosen from a hydrogen atom or a C 1 -C 4 (hydroxy)alkyl group;

R1 and R2 may optionally form, together with the atom that bears them, a cationic heterocycle with 5 to 8 members;

R′ is chosen from a hydrogen atom or a C 1 -C 4 (hydroxy)alkyl group; and

An- is chosen from an anion or a mixture of anions which are organic or inorganic and cosmetically acceptable.

18. A process for dyeing keratin fibers, comprising applying a dyeing composition to said fibers, either alone or in the presence of an oxidizing agent, for a time that is sufficient to develop the desired color, wherein said dyeing composition comprises at least one cationic meta-phenylenediamine compound of formula (I), acid addition salts thereof, and solvates thereof:

wherein:

R is chosen from a hydrogen or halogen atom; a C 1 -C 4 alkyl group; a carboxyl group, or a (C 1 -C 4 )alkoxycarbonyl group;

R1 is chosen from a C 1 -C 10 (hydroxy)alkyl group, optionally interrupted with one or more non-adjacent oxygen atoms or non-adjacent NR′ substituents, substituted by a cationic CAT group;

R2 is chosen from a hydrogen atom or a C 1 -C 4 (hydroxy)alkyl group;

R1 and R2 may optionally form, together with the atom that bears them, a cationic heterocycle with 5 to 8 members;

R′ is chosen from a hydrogen atom or a C 1 -C 4 (hydroxy)alkyl group; and

An- is chosen from an anion or a mixture of anions which are organic or inorganic and cosmetically acceptable.