MXPA99004785A

MXPA99004785A - Composition of dyeing for keratinic fibers with a direct cationic coloring and a polyol or ether of pol

Info

Publication number: MXPA99004785A
Application number: MXPA/A/1999/004785A
Authority: MX
Inventors: Cotteret Jean; Lang Gerard
Original assignee: L'oreal
Priority date: 1998-05-28
Filing date: 1999-05-24
Publication date: 2000-08-01

Abstract

The present invention relates to a dyeing composition for keratin fibers to a dyeing composition for keratin fibers, in particular for human keratin fibers such as hair, comprising, in a medium suitable for dyeing, at least one direct cationic dye of the formula given and characterized in that they also contain at least glycerin and / or a particular polyol and / or particular polyol ether. The invention also relates to the dyeing processes and devices used by the

Description

COMPOSITION OF TIENIDO FOR KERATINIC FIBERS WITH A DIRECT CATIONIC COLORING AND A POLYOL OR A POLYOL ETHER.

Field of Invention The invention relates to a dyeing composition for keratin fibers, in particular for human keratin fibers such as hair, comprising, in a medium suitable for dyeing, at least one direct cationic dye of the given formula, and at least glycerol and / or a particular polyol and / or particular polyol ether.

The subject of the invention is also the dyeing methods and devices which use said composition.

Background of the Invention In the capillary field, two types of coloration can be distinguished.

The first is semi-permanent or temporary coloration, or direct coloring, which resorts to Ref. 030314 dyes that are able to contribute to the natural coloration of the hair, a more or less pronounced color modification resistant eventually to several shampoos. These dyes are called direct dyes; they can be made with or without oxidizing agent. In the presence of oxidant, the purpose is to obtain a lightening coloration. The lightening coloration is carried out by applying to the hair the extemporaneous mixture of a direct dye and an oxidant and makes it possible, in particular, to obtain by clearing the melanin of the hair, an advantageous effect such as a uniform color in the case of gray hair or highlighting the color in the case of naturally pigmented hair.

The second is the permanent coloration or oxidation coloration. This is carried out with dyes called "oxidation" which comprise oxidation dye precursors and copulators. Oxidation staining precursors, commonly called "oxidation bases", are initially colorless or weakly colored compounds that develop their dyeing power in the hair in the presence of added oxidizing agents at the time of use, leading to the formation of colored compounds and colorants. The formation of these colored compounds and dyes, either by an oxidative condensation of the "oxidation bases" on themselves, or by an oxidative condensation of the "oxidation bases" on modified coloring compounds commonly called "couplers" and generally present in the red compositions used in the oxidation dyeing.

To vary the shades obtained with the indicated oxidation, or enrich them with reflections, it happens that direct dyes are added.

Among the cationic direct dyes available in the field of dyeing of particularly human keratin fibers, the compounds whose structure will be developed in the text that follows are already known; However, these dyes lead to colorations that have still insufficient characteristics, while at the same time in the plane of homogeneity of the color distributed along the fiber ("unisson") (uniformity), it is said then that the coloration is too selective, as in the plane of tenacity, in terms of resistance to the various aggressions that the hair can experience (light, bad weather, shampooing), and in the plane of intensity.

However, after important research carried out on the subject, the applicant firm has now discovered that it is possible to obtain new compositions for the dyeing of keratin fibers capable of carrying colorations that better resist the various aggressions that may be experienced by hairs, more intense and less selective, associating at least glycerin and / or a particular polyol and / or a particular polyol ether with at least one known cationic direct dye of the prior art and of formula (I) defined below.

This discovery forms the basis of the present invention.

Description of the invention The present invention therefore has as its first object a composition for dyeing keratin fibers and in particular human keratin fibers such as hair, which include in a medium suitable for dyeing, (i) at least one direct cationic dye whose structure corresponds to the following formula (I), characterized in that it also contains (ii) at least glycerin and / or a particular polyol and / or a particular polyol ether. (i) the cationic direct dye usable according to the present invention is a compound of formula (I) below: A - N = N - B (I) in which: symbol A represents a group selected from the following Al a A3 structures: *? structures A1 to A3 in which Ri denotes an alkyl radical of C? ~ C, a phenyl radical which can be substituted by an alkyl radical of C? -C or a halogen atom selected from chlorine, bromine, iodine and fluorine; R 2 denotes a C 1 -C 4 alkyl radical or a phenyl radical; R3 and R, identical or different, represent an alkyl radical of C? -C4, a phenyl radical, or, in the case of structure Al, can together form a substituted benzene ring, and in the case of structure A2, they can together form a benzene ring optionally substituted by one or more C?-C4 alkyl radicals, alkoxy C1-C4, or N02; R3 may also designate a hydrogen atom; Z denotes an oxygen atom, sulfur or a group -NR2; M represents a group -CH, -CR (designating R C 1 -C 4 alkyl), or -NR 5 (X ~) r; K represents a group -CH, -CR (designating R C 1 -C 4 alkyl), or -NR 5 (X ~) r; P represents a group -CH, -CR (r denoting C?-C4 alkyl), or -NRs (X ") r; r designates zero or 1; R 5 represents a 0"atom, a C 4 -C 4 alkoxy radical, or a C 1 -C 4 alkyl radical, and R 7, identical or different, represent a hydrogen or halogen atom, selected from chlorine, bromine, iodine and fluorine, a C1-C4 alkyl radical, C? -C2 alkoxy, a radical -N02; X? represents an anion preferably selected from chloride, iodide, methyl sulfate, ethyl sulfate, acetate and perchlorate, with the proviso that if R 4 designates a C 1 -C 4 alkyl radical and Z designates a sulfur atom, R 3 does not designate a hydrogen atom; if R5 designates O ", then r designates zero, if K or P or M designates -N-C1-C4 alkyl X", then R6 or R7 is different from a hydrogen atom; if K designates -NR5 (X ") r, then M = P = -CH; -CR; if M designates -NR5 (X") r, then K = P = -CH; -CR; if P designates -NR (X ~) r, then K = M and designates - CH or -CR; if Z designates -NR2 and R2 designates a C1-C4 alkyl radical, then at least one of the radicals Ri, R3 or R4 of A2 is different from a C?-C alkyl radical; the symbol B represents: - (a) a group of structure Bl following structure Bl in which, Re represents a hydrogen atom, a halogen atom selected from chlorine, bromine, iodine, and fluorine, an alkyl radical of C? -C, alkoxy of C? -C, a radical OH, -N02, -NHRn, NRi2R? 3, -NHCOalkyl of C? -C4, or form with Rg a ring of 5 or 6 members containing or not one or more heteroatoms selected from nitrogen, oxygen or sulfur; R9 represents a hydrogen atom, a halogen atom selected from chlorine, bromine, iodine and fluorine, an alkyl radical of C?-C4, alkoxy of C? ~C, or forms with Rio or Rn a ring of 5 or 6 members containing or not one or more heteroatoms selected from nitrogen, oxygen or sulfur; Rio represents a hydrogen atom, a radical -OH, a radical -NHRn, a radical -NR? 2R? 3; Rii represents a hydrogen atom, a C 1 -C 4 alkyl radical, a monohydroxyalkyl radical of C? -C4, C2-C4 polyhydroxyalkyl, a phenyl radical; R12 and 13; identical or different, represent an alkyl radical of C? -C, a monohydroxyalkyl radical of C? ~ C4, polyhydroxyalkyl C2-C4; - (b) a 5- or 6-membered nitrogenous heterocyclic group capable of including other heteroatoms and / or carbonylated group and which can be substituted by one or more C 1 -C 4 alkyl, amino or phenyl radicals, and particularly a group of structure B2 following : structure B2 in which, R 4 and R 15, identical or different, represent a hydrogen atom, a C 1 -C 4 alkyl radical, a phenyl radical, H3 Y designates the radical -CO or the radical -C =; n = 0 or 1, with, when n designates 1, U designates the radical -CO.

In the structures defined above, the alkyl or C?-C alkoxy group preferably designates methyl, ethyl, butyl, methoxy, ethoxy.

The cationic direct dyes of formula (I) which can be used in the dyeing compositions according to the invention are known compounds and are described, for example, in patent applications FR-2189006, FR-2285851 and FR-2140205 and their certificates of addition.

Among the cationic direct dyes of formula (I) which can be used in the dyeing compositions according to the invention, those of the formula (I) in which the symbol A designates the structure A3 while the symbol B designates the structure Bl or B2 are particularly preferred .

Among these compounds, compounds of structures (I) can be more particularly mentioned? a (I) 77 following: OR I. O CH3SO4" CH3SO4- CH3SO4" CH3SO4- CH3SO4 CH3SO4"CH3SO4- CH3SO4" CH3SO4" C4H9 0) « CH3SO4" CH3SO4 CH, (!) 76 The cationic direct dye (s) used according to the invention preferably represent from 0.001 to 10% by weight approximately of the total weight of the dyeing composition and even more preferably from 0.005 to 5% by weight approximately of this weight. (ii) By polyol, for the purposes of the invention, a linear, branched or cyclic, saturated or unsaturated alkyl-type compound which carries at least two OH functions on the alkyl chain and polymers (polyethers) is designated of these polyhydroxy alkyl compounds.

The particular polyols used according to the invention contain at least 4 carbon atoms and can be selected, in particular, from the polyalkanes of C4-Cg as well as polyalkylene glycols such as, more particularly, polyethylene glycols and polypropylene glycols.

Among the C4-Cg polyols, mention may be made in particular of 2-butene-1, -diol, pentane-1, 5-diol, 2,2-dimethyl-propane-1, 3-diol, 3-methyl -pentane-1, 5-diol, pentane-1,2-diol, 2, 2, 4-trimethyl-pentane-1,3-diol, 2-methyl-propane-1,3-diol, hexylene glycol, 1,3-butylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol.

The particular polyol ethers according to the invention are chosen from the C?-C8 aliphatic ethers of C3-Cg polyols and the aromatic Cß-Cß ethers of C2-Cg polyols.

Among the C 1 -C 8 aliphatic ethers of C 3 -Cg polyols, mention may be made in particular of propylene glycol monomethyl ether, propylene glycol monomethyl ether, isopropylene glycol dimethylether, diethylene glycol monomethylether and monomethyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethylether and diethylene glycol dimethylether; among the C6-C8 aromatic ethers of C2-Cg polyols, mention may be made in particular of the monophenylether of ethylene glycol or the monobenzylether of ethylene glycol, the monophenylether of propylene glycol, the monobenzylether of propylene glycol, the monophenylether of diethylene glycol and the monobenzylether of diethylene glycol.

The glycerine and / or the polyol (s) and / or polyol ether (s) described for the purposes of the invention are present in the dyeing composition according to the invention in proportions generally ranging from 0.1 to 40% by weight, and even more particularly from 0.5 to 20% by weight relative to the total weight of the composition.

The appropriate medium for dyeing (or support) is generally constituted by a mixture of water and by at least glycerin and / or a polyol and / or a polyol ether such as defined above. It may also contain one or more organic solvents other than the glycerin and / or the polyols and / or the polyol ether (s) used according to the invention, to solubilize the compounds which are not sufficiently soluble in the medium. As the organic solvent, mention may be made, for example, of C?-C4 alkanols, such as ethanol and isopropanol, as well as aromatic alcohols such as benzyl alcohol, analogous products and mixtures thereof.

The said additional organic solvents can be present in proportions preferably comprised between 0.5 and 40% by weight approximately relative to the total weight of the dyeing composition, and even more preferably between 1 and 20% by weight approximately .

According to the invention, the pH is generally between approximately 2 and 11, and preferably between approximately 5 and approximately 10. It can be adjusted to the desired value by means of acidifying or alkalizing agents usually used in the dyeing of keratin fibers.

Among the acidulating agents, mention may be made, by way of example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid, sulfonic acids.

Among alkalizing agents, mention may be made, by way of example, of ammonia, alkali carbons, alkaline amines such as mono-, di- and triethanolamines as well as their derivatives, sodium or potassium hydroxides and compounds of formula ( II) following: wherein it is a moiety optionally substituted by a hydroxyl group or a C? -C6 alkyl radical; Rißf 1, Rie and Ri 9 identical or different, represent a hydrogen atom, an alkyl radical of Ci-Ce or hydroxyalkyl of Ci-Cß- The dye composition according to the invention can contain, in addition to the cationic direct dye (s) defined above, one or more additional direct dyes, which can be chosen, for example, from nitrobenzene dyes, anthraquinone dyes, naphthoquinone dyes, triallylmetanic dyes , zantenic dyes, non-cationic azo dyes.

When it is intended for oxidation dyeing, the dye composition according to the invention contains, in addition to the cationic direct dye (s) and the glycerin and / or the particular polyol and / or the polyol ether defined above, one or more bases of oxidation selected from the oxidation bases conventionally used for oxidation dyeing and among which may be particularly mentioned para-phenylenediamines, bis (phenyl) alkylenediamines, para-aminophenols, ortho-aminophenols and heterocyclic bases.

When used, the oxidation base or bases preferably represent from 0.0005 to 12% by weight approximately of the total weight of the dyeing composition, and even more preferably from 0.005 to 6% by weight approximately of this weight . When it is intended for oxidation dyeing, the dyeing composition according to the invention can also include, in addition to the direct cationic dye and the glycerin and / or the particular polyol and / or the polyol ether defined above as well as the bases of oxidation, one or more copulators in order to modify or enrich with reflections the shades obtained using the direct cationic dye (s) and the oxidation base (s).

The copulators which can be used in the dyeing composition according to the invention can be selected from the couplers conventionally used in oxidation dyeing, among which metaphenyldiamines, eta-aminophenols, meta-diphenols and heterocyclic couplers can be particularly mentioned.

When present, the coupler (s) preferably represent from 0.0001 to 10% by weight approximately of the total weight of the dyeing composition and even more preferably from 0.005 to 5% by weight approximately of this weight. The dyeing composition according to the invention can also include various adjuvants conventionally used in hair dyeing compositions, such as antioxidants, penetrating agents, sequestering agents, perfumes, buffers, dispersing agents, surfactants, smoke-killing agents, ceramides. , preservatives, filtering agents, opacifying agents.

Of course, the person skilled in the art will try to choose this or these possible complementary compounds in such a way that the advantageous properties intrinsically related to the dyeing composition according to the invention are not substantially altered by the addition (s) considered.

The dye composition according to the invention can be presented in various forms, such as in the form of liquids, shampoos, creams, gels, or in any other form suitable for dyeing keratin fibers, and particularly human hair. It can be obtained by extemporaneous mixing of a composition, and also pulverulent, containing the cationic direct dye (s) with a composition containing the glycerin and / or the particular polyol and / or the particular polyol ether.

When the combination of the cationic direct dye and the glycerin and / or the particular polyol and / or the particular polyol ether defined according to the invention is used in a composition intended for oxidation dyeing (one or more oxidation bases are then used in the presence of one or more couplers) or when it is used in a composition intended for the direct lightening dye, then the dyeing composition according to the invention further includes at least one oxidizing agent selected, for example, from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts such as perborates and persulfates, and enzymes such as peroxidases, laccases, and two-electron oxidase reductases. The use of hydrogen peroxide "or enzymes is particularly preferred.

Another object of the invention is a process for dyeing keratin fibers and in particular human keratin fibers such as hair using the dyeing composition as defined above.

According to a first variant of this dyeing process according to the invention, at least one dyeing composition as defined above is applied to the fibers for a sufficient time to develop the desired dyeing, after which it is rinsed, it is eventually washed with shampoo, it is rinsed again and dried.

The time necessary for the development of the coloration on the keratin fibers is generally between 3 and 60 minutes even more precisely between 5 40 minutes According to a second variant of this direct dyeing process according to the invention, at least one dyeing composition as defined above is applied to the fibers for a sufficient time to develop the desired dyeing, without final rinsing.

According to a particular embodiment of this dyeing process, and when the dyeing composition according to the invention includes at least one oxidation base and at least one preliminary step consisting of storing separately, on the one hand, a composition (Al ) comprising, in a medium suitable for dyeing, at least one cationic direct dye and at least one glycerin and / or a particular polyol and / or a particular polyol ether such as defined above and at least one oxidation base and, on the other hand, a composition (Bl) that includes, in a medium suitable for dyeing, at least one oxidizing agent, then in proceeding to its mixing at the time of use before applying this mixture on the keratin fibers.

According to another particular embodiment of this dyeing process, and when the dyeing composition according to the invention includes at least one oxidizing agent, the dyeing process includes a preliminary step consisting of storing separately, on the one hand, a composition (A2) comprising, in a medium suitable for dyeing, at least one direct cationic dye and at least glycerin and / or a particular polyol and / or a particular polyol ether such as defined above and, on the other hand, a composition (Bl) which includes, in a medium suitable for the dye, at least one oxidizing agent, then in mixing it at the time of use before applying this mixture on the keratin fibers.

Another object of the invention is a multi-compartment device or dye "kit" or any other conditioning system in several compartments of which a first compartment includes the composition (Al) or (A2) as defined above and a second compartment includes the composition (Bl) as defined above. These devices can be equipped with a means for providing the desired mixture on the hair, such as the devices described in patent FR-2,586,913 in the name of the applicant firm.

The following examples are intended to illustrate the invention without thereby limiting the scope.

EXAMPLES EXAMPLE 1 The following dye composition was prepared: Direct cationic dye of formula (I) 2 0.1 g Glycerin 10.0 g 2-amino-2-methyl-propanol ... c.s pH 9 Demineralized water c.s.p 100 g M.A. *: Active Matter.

The composition indicated above was applied for 30 minutes on wicks of natural gray hair at 90% white. The hair strands were then rinsed, washed with a conventional shampoo and then dried.

They were stained in an intense purple hue.

EXAMPLE 2 The following dye composition was prepared: Direct cationic dye of formula (I)? Or 0.12 g Monome ile of propylene glycol 10.0 g 2-amino-2-methyl-propanol ... c.s pH 9 Demineralized water c.s.p 100 g M.A. *: Active Matter.

The composition indicated above was applied for 30 minutes on wicks of natural gray hair with 90% white. The hair strands were then rinsed, washed with a conventional shampoo, then dried.

They were stained in an intense red tone.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Having described the invention as above, the content of the following is claimed as property.

Claims

1. A composition for dyeing keratin fibers and in particular human keratin fibers such as hair, including in a medium suitable for dyeing, (i) at least one direct cationic dye of formula (I) below: A - N = N - B (I) in which: symbol A represents a group selected from the following Al a A3 structures: structures A1 to A3 in which Ri denotes a C 1 -C 4 alkyl radical, a phenyl radical which can be substituted by a C 1 -C 4 alkyl radical or a halogen atom selected from chlorine, bromine, iodine and fluorine; R 2 denotes a C 1 -C 4 alkyl radical or a phenyl radical; R3 and R, which are identical or different, represent a C1-C4 alkyl radical, a phenyl radical, or, in the case of the Al structure, can together form a substituted benzene ring, and in the case of the A2 structure, can together form a benzene ring optionally substituted by one or more alkyl radicals d, and C? -C4, alkoxy C1-C4, or N02; R3 may also designate a hydrogen atom; Z denotes an oxygen atom, sulfur or a group - NR2; M represents a group -CH, -CR (denoting R C 1 -C 4 alkyl), or -NR 5 (X ") r; K represents a group -CH, -CR (denoting R C 1 -C 4 alkyl), or - NR5 (X ") r; P represents a group -CH, -CR (r denoting C?-C 4 alkyl), or -NR 5 (X ") r; r designates zero or 1; R5 represents a 0"atom, an alkoxy radical of C? C4, or a C 1 -C 4 alkyl radical; e and R7 / identical or different, represent a hydrogen or halogen atom, selected from chlorine, bromine, iodine and fluorine, an alkyl radical of C? -C4 alkoxy of C? ~ C2, a radical -N02; X "represents an anion preferably selected from chloride, iodide, methyl sulfate, ethyl sulfate, acetate and perchlorate, with the proviso that if R designates an alkyl radical of Cx-C4 and Z designates an sulfur, R3 does not denote a hydrogen atom, if R5 designates 0", then r designates zero; if K or P or M designates -N-alkyl C? ~ C4 X ", then R6 or R7 is different from a hydrogen atom; if K designates -NR5 (X ~) r, then M = P = -CH; -CR; if M designates -NR5 (X ") r, then K = P = -CH; -CR; if P designates -NR5 (X") r, then K = M and designate - CH or -CR; if Z denotes -NR2 and R2 denotes an alkyl radical of C? ~ C4, then at least one of the radicals Ri, R 3 or R 4 of A2 is different from a C 1 -C 4 alkyl radical; the symbol B represents: - (a) a group of structure Bl following structure Bl in which, Rs represents a hydrogen atom, a halogen atom selected from chlorine, bromine, iodine, and fluorine, an alkyl radical of C? -C, alkoxy of C? -C4, a radical OH, -N02, -NHRU, R? 2Ri3, -NHCOalkyl of C? -C4, or form with Rg a ring of 5 or 6 members containing or not one or more heteroatoms selected from nitrogen, oxygen or sulfur; Rg represents a hydrogen atom, a halogen atom selected from chlorine, bromine, iodine and fluorine, an alkyl radical of C?-C4, alkoxy of C?-C4, or forms with Rio or Rn a ring of 5 or 6 members containing or not one or more heteroatoms selected from nitrogen, oxygen or sulfur; Rio represents a hydrogen atom, a radical -OH, a radical -NHRn, a radical -NR? 2R? 3; R n represents a hydrogen atom, a C 1 -C 4 alkyl radical, a monohydroxyalkyl radical of C1-C4, C2-C4 polyhydroxyalkyl, a phenyl radical; R 12 and Ri 3 / identical or different, represent a C 1 -C 4 alkyl radical, a C 1 -C 4 monohydroxyalkyl radical, polyhydroxyalkyl radical C2-C4; - (b) a 5- or 6-membered heterocyclic nitrogenous group capable of including other heteroatoms and / or carbonylated group and which can be substituted by one or more C?-C4, amino or phenyl alkyl radicals, and particularly a structure group B2 following: structure B2 in which, 14 and i5 identical or different, represent a hydrogen atom, a C 1 -C 4 alkyl radical, a phenyl radical, CH, I 3 Y designates the radical -CO or the radical -C =; n = 0 or 1, with, when n designates 1, U designates the radical -CO, characterized in that said composition also contains: (ii) at least glycerin and / or a polyol containing at least 4 carbon atoms and / or an aliphatic ether of Ci-Cß of C3-Cg polyol and / or a C2-C2 aromatic ether of C2- polyol C9

2. The composition according to claim 1, characterized in that in the formula (I), the C 1 -C 4 alkyl radicals and the C 1 -C 4 alkoxy radicals are methyl, ethyl, butyl, methoxy and ethoxy radicals.

3. The composition according to claim 2, characterized in that the cationic direct dyes respond to the structures (I)? a (I) 7 following: 25 I. O 20 CH3SO4 CH3S04" 25 CH3SO4- CH3SO4- CH3SO4" CH, S04 25 CH3SO4- CH3SO4- I C4H9 twenty 25 (D 49 25 fifteen twenty 25 CH3SO4 ~ 10 fifteen 25 25

4. The composition according to any of the preceding claims, characterized in that the cationic direct dye (s) of formula (I) represent 0.001 to 10% by weight of the total composition.

5. The composition according to claim 4, characterized in that the cationic direct dye (s) of formula (I) represent from 0.005 to 5% by weight of the total weight of the composition.

6. The composition according to any of the preceding claims, characterized in that the glycerin and / or the polyol containing at least 4 carbon atoms and / or the aliphatic ether of Ci-Cß of C3-Cg polyol and / or the aromatic ether of C6 -C8 of C2-C9 polyol represent from 0.1 to 40% by weight of the total weight of the composition.

7. The composition according to claim 6, characterized in that the glycerin and / or the polyol containing at least 4 carbon atoms and / or the aliphatic ether of Ci-Cβ of C3-Cg polyol and / or the aromatic ether of C6-Cs of C2-Cg polyol represent from 0.5 to 20% by weight of the total weight of the composition.

8. The composition according to any of the preceding claims, characterized in that it also contains additional direct dyes.

9. The composition according to any of the preceding claims, characterized in that the medium suitable for the keratin fibers (or support) is constituted by a mixture of water and at least one solvent selected from glycerin and / or polyols and / or ethers of polyols defined in claim 1.

10. The composition according to claim 9, characterized in that the medium further comprises at least one organic solvent.

11. The composition according to any of the preceding claims, characterized in that it has a pH comprised between 2 and 11, and preferably between 5 and 10.

12. The composition according to any of the preceding claims, characterized in that it is intended for oxidation dyeing and because it contains one or more oxidation bases selected from paraphenylenediamines, bis (phenyl) alkylene diamines, para-aminophenols, ortho -aminophenols and heterocyclic bases.

13. The composition according to the rei indication 12, characterized in that the oxidation base (s) represent 0.0005 to 12% by weight of the total weight of the dyeing composition.

14. The composition according to claim 13, characterized in that the oxidation base (s) represent from 0.005 to 6% by weight of the total weight of the dyeing composition.

15. The composition according to any of claims 12 to 14, characterized in that it includes one or more couplers selected from meta-phenyldiamines, meta-aminophenyl, meta-diphenols and heterocyclic couplers.

16. The composition according to claim 15, characterized in that the coupler (s) represent from 0.0001 to 10% by weight of the total weight of the dyeing composition.

17. The composition according to claim 16, characterized in that the coupler (s) represent from 0.005 to 5% by weight of the total weight of the dyeing composition.

18. The composition according to any of the preceding claims, characterized in that it is intended for oxidation dyeing or direct lightening dyeing and because it includes at least one oxidizing agent.

19. A process for dyeing keratin fibers and in particular human keratin fibers such as hair, characterized in that at least one dyeing composition as defined in any of the claims is applied to the fibers | to 11, for a sufficient time to develop the desired coloration, after which it is clarified, it is eventually washed with shampoo, rinsed again and dried.

20. The dyeing process of keratin fibers and in particular of human keratin fibers such as hair, characterized in that at least one dyeing composition as defined in any of claims 1 to 11 is applied to the fibers for a sufficient time to develop the desired coloration, without final rinse.

21. The dyeing process of keratin fibers and in particular of human keratin fibers such as hair, characterized in that it comprises a preliminary step consisting in storing separately, on the one hand, a composition (Al) comprising, in a medium suitable for the dye, at least one direct cationic dye and at least glycerin and / or a polyol and / or a polyol ether as defined in the preceding claims and at least one oxidation base and, on the other hand, a composition (Bl) which includes, in a medium suitable for the dye, at least one oxidizing agent, then in mixing it at the time of use before applying this mixture on the keratin fibers.

22. The dyeing process of keratin fibers and in particular of human keratin fibers such as hair, characterized in that it comprises a preliminary step consisting in storing separately, on the one hand, a composition (A2) comprising, in a suitable medium for the dye, at least one cationic direct dye and at least glycerin and / or a polyol and / or a polyol ether as defined in the preceding claims and at least one oxidation base and, on the other hand, a composition (Bl) which includes, in a suitable medium for the dye, at least one oxidizing agent, then in proceeding to its mixing at the time of use before applying this mixture on the keratin fibers.

23. A multi-compartment dyeing or compartment "kit" device, characterized in that a first compartment includes the composition (Al) or (A2) as defined in claim 21 or 22 and a second compartment includes the composition (Bl) as defined in rei indication 21 or 22.