WO2016131631A1

WO2016131631A1 - Dyes for keratin fibers, containing a combination of three colorants

Info

Publication number: WO2016131631A1
Application number: PCT/EP2016/051869
Authority: WO
Inventors: Konstantin Goutsis; Gabriele Weser
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2015-02-19
Filing date: 2016-01-29
Publication date: 2016-08-25
Also published as: DE102015203002A1

Abstract

The invention relates to a product for dyeing keratin fibers, especially human hair, containing in a cosmetic carrier, relative to the total weight of the product, (a) 0.13 to 0.90% by weight HC Blue no. 15, (b) 0.01 to 0.50 by weight Basic Red 51, and (c) 0.01 to 0.50 by weight Basic Orange 31.

Description

"Colorant for keratinic fibers containing a combination of three dyes"

The present invention is in the field of cosmetics and relates to means for dyeing keratinic fibers, in particular human hair, which contain a combination of three selected dyes in each of certain ranges. The use of the agent as well as a method using the agent will also be described.

For the dyeing of keratinic fibers, either direct dyes or oxidation dyes are generally used. Although intensive dyeings with good fastness properties can be obtained with oxidation dyes, the development of the color is generally under the influence of oxidizing agents such as H2O2, which in some cases can cause damage to the fiber. Furthermore, some oxidation dye precursors or certain mixtures of oxidation dye precursors may be sensitizing in persons with sensitive skin. Direct dyes are applied under gentler conditions. Their disadvantage, however, is that the dyeings often have only insufficient fastness properties, especially in hair washing, but also against external influences, such as sunlight or reactive environmental chemicals, such as swimming pool water.

In addition to the insufficient fastness properties, the poor gray coverage of substantive dyes is another general disadvantage. An optimal gray coverage is understood as the complete lamination or covering of gray hair. If a colorant with optimal gray coverage is used in a person whose hair is, for example, 50% gray (50% of the hair is grayed and 50% of the hair is still pigmented), a uniform color result is obtained after application of the colorant means a color difference between the graying and the non-graying hair is no longer noticeable after staining.

While a good to very good gray coverage can usually be achieved with oxidative colorants, the gray coverage that can be achieved with substantive dyes is hitherto unsatisfactory.

The user, who would like to do without the use of oxidative hair dyes due to the associated hair damage, therefore, to lamination or coverage of his (wholly or partially) graying hair only insufficient options available. The object of the present invention was therefore to provide new, based on substantive dyes dyes that stain the hair intense and this allow a good gray coverage.

This object is achieved by a means for dyeing keratinic fibers, in particular human hair, contained in a cosmetic carrier - based on the total weight of the agent -

(a) 0.13 to 0.90 wt% of HC Blue No. 15

(b) 0.01 to 0.50 wt% Basic Red 51 and

(c) 0.01 to 0.50 wt% Basic Orange 31.

It has surprisingly been found that dyeing with very good gray coverings could be achieved by using the very specific dye combination in specific quantity ranges, without the use of oxidation dyes and oxidizing agents would have become necessary.

Under keratinic fibers or keratin fibers are furs, wool, feathers and especially human hair to understand. Although the agents are primarily suitable for dyeing keratin fibers, in principle, there is nothing to prevent their use in other areas as well.

By the term "dyeing agent" of keratin fibers used is meant dyeing agents which dye the keratin fibers on the basis of substantive dyes.

In addition, these agents may also contain oxidation dye precursors, so-called developers and coupler components. Developers and couplers diffuse separately into the keratin fiber and form under the influence of an alkalizing agent (for example, ammonia) and an oxidizing agent (usually hydrogen peroxide) in a chemical reaction with each other, the actual dyes. The colorants may additionally contain one or more oxidizing agents. If hair dyeing agents contain only direct dyes, they will be dyed without lightening at the same time. If, however, the agents additionally contain developers, couplers and / or oxidants, the keratin fibers are additionally lightened due to the further presence of the oxidant. A whitening stain is explicitly included in the definition of staining.

The agents contain the three selected dyes (a), (b) and (c) in a cosmetic carrier, preferably in a suitable aqueous, alcoholic or aqueous-alcoholic carrier. For the purpose of hair coloring, such carriers are, for example, creams, emulsions, gels or surfactant-containing foaming solutions, such as, for example, shampoos, foam aerosols, Foam formulations or other preparations suitable for use on the hair. But it is also conceivable to integrate the funds in a powdered or tablet-like formulation.

For the purposes of the present invention, aqueous-alcoholic solutions are to be understood as meaning aqueous solutions containing from 3 to 70% by weight of a C 1 -C 4 -alcohol, in particular ethanol or isopropanol. The agents may additionally contain other organic solvents, such as, for example, methoxybutanol, benzyl alcohol, ethyl diglycol or 1,2-propylene glycol. Preference is given to all water-soluble organic solvents. The aqueous carrier according to the invention contains at least 30 wt .-%, in particular at least 50 wt .-% water, based on the total weight of the agent. Preference is given to aqueous carriers.

The first dye (a) essential to the invention is the dye HC Blue No. 15. This dyestuff is a 1: 1 mixture of phosphoric acid and 4 - [(2,6-dichlorophenyl) (4-imino-3,5-dimethylcyclohexa-2,5-dien-1-ylidene) methyl] - 2,6-xylidine. The dye has the CAS number 74578-10-2 and has the structure (A).

The second dye (b) is the dye Basic Red 51. Basic Red 51 is named 2 - [((4-dimethylamino) phenyl) azo] -1,3-dimethyl-1H-imidazolium chloride, has CAS number 77061-58-6 and has the formula (B) ,

(B) For example, Basic Red 51 is commercially available under the trade names MIP RED 2985, RED (MIP 2985), MIP 2985 or VIBRACOLOR® Ruby Red.

The third dye (c) essential to the invention is the dye Basic Orange 31. Basic Orange 31 is named 2 - [(4-aminophenyl) azo] -1,3-dimethyl-1H-imidazolium chloride, the formula (C).

Basic Orange 31 is commercially available, for example, under the trade names MIP Orange 3100, MIP 3100, Orange (MIP 3100), VIBRACOLOR® Flame Orange or COLIPA B1 18.

It has been found that the gray coverage in the staining of keratinic fibers can be significantly improved if the three essential dyes (a) HC Blue No. 15, (b) Basic Red 51 and (c) Basic Orange 31 can be used in quite specific ranges in the agent.

So contains a dye

(a) 0.13 to 0.90 wt% of HC Blue No. 15

(b) 0.01 to 0.50 wt% Basic Red 51 and

(c) 0.01 to 0.50 wt% Basic Orange 31.

Calculation basis for all figures in weight percent is here

the amount of HC Blue No. 15, which is related to the total weight of the agent,

the amount of Basic Red 51 which is related to the total weight of the agent and

the amount of Basic Orange 31, which is related to the total weight of the agent.

An agent for dyeing keratin fibers contains the dye HC Blue No. 15 in an amount of 0.13 to 0.90 wt .-%. An even better gray coverage is possible, however, if the agent - based on the total weight of the agent - HC Blue No. 15 in an amount range of 0, 13 to 0.80 wt .-%, preferably from 0, 13 to 0.65 wt .-%, more preferably from 0.13 to 0.50 wt .-%, even more preferably from 0.15 to 0.40 wt .-% and most preferably from 0.15 to 0.30 wt .-%. Further, an agent for dyeing keratin fibers contains the dye (b) Basic Red 51 in an amount of 0.01 to 0.50 wt%. The gray coverage can be further optimized if the agent - based on the total weight of the agent - Basic Red 51 in an amount ranging from 0.01 to 0.30 wt .-%, preferably from 0.01 to 0.10 wt. %, more preferably from 0.01 to 0.08 wt .-% and most preferably from 0.03 to 0.06 wt .-%. In this case, greatly improved gray coverage values could be measured, in particular, if the particularly preferred quantitative range of HC Blue No. 15 were combined with the particularly preferred volume ranges of Basic Red 51.

Finally, an agent for dyeing keratin fibers contains the dye (c) Basic Orange 31 in an amount of 0.01 to 0.50 wt .-%. A further improvement in the gray coverage was observed when the average composition of the agent, based on the total weight of the agent, was (c) Basic Orange 31 in the range from 0.01 to 0.40% by weight, preferably from 0.03 to 0, 30 wt .-%, more preferably from 0.06 to 0.20 wt .-% and most preferably 0.08 to 0.15 wt .-%. Here too, greatly improved gray coverage values could be measured, in particular, if the particularly preferred quantitative range of HC Blue No. 15 were combined with the particularly preferred volume ranges of Basic Red 51 and the particularly preferred volume ranges of Basic Orange 31.

Accordingly, an agent for dyeing keratinic fibers, in particular human hair, contained in a cosmetic carrier-based on the total weight of the agent-is particularly preferred.

(a) 0.13 to 0.80 wt% of HC Blue No. 15

(b) 0.01 to 0.30 wt% Basic Red 51 and

(c) 0.01-0.40 wt% Basic Orange 31.

Further preferred is an agent for dyeing keratinic fibers, in particular human hair, contained in a cosmetic carrier - based on the total weight of the agent -

(a) 0.13 to 0.65 wt.% of HC Blue No. 15

(b) 0.01 to 0, 10 wt% Basic Red 51 and

(c) 0.03 to 0.30 wt% Basic Orange 31.

Even more preferred is an agent for dyeing keratinic fibers, in particular human hair, contained in a cosmetic carrier - based on the total weight of the agent -

(a) 0.13 to 0.50 wt.% of HC Blue No. 15

(b) 0.01 to 0.08 wt% Basic Red 51 and

(c) 0.06 to 0.20 wt% Basic Orange 31. Particular preference is given to an agent for dyeing keratinic fibers, in particular human hair, contained in a cosmetic carrier-based on the total weight of the agent-

(a) 0.15-0.40 wt% HC Blue No. 15

(b) 0.03 to 0.06 wt% Basic Red 51 and

(c) 0.08 to 0.15% by weight Basic Orange 31.

Very particular preference is given to an agent for dyeing keratinic fibers, in particular human hair, contained in a cosmetic carrier-based on the total weight of the agent-

(a) 0.15 to 0.30 wt% of HC Blue No. 15

(b) 0.03 to 0.06 wt% Basic Red 51 and

(c) 0.08 to 0.15% by weight Basic Orange 31.

In principle, the agents may additionally contain one or more further substantive dyes from the group of cationic, nonionic and anionic substantive dyes.

Cationic dyes are understood as meaning dyes which carry one or more positive charges. Cationic dyes do not carry negative charges. The dyes from the group Basic Yellow 87, Basic Yellow 57, Basic Red 76, Basic Violet 2, Basic Violet 14, Basic Blue 7, Basic Blue 26, Basic Blue 99, Basic Brown 16, are examples of additional cationic dyes containing in the middle. Basic Brown 17, Cationic Blue 347, Cationic Blue 347 and HC Blue 16.

In this context, however, it has been found that the gray coverage of agents, in addition to the dyes (a) HC Blue No. 15, (b) Basic Red 51 and (c) Basic Orange 31 additionally contain significant amounts of other cationic dyes, can also get worse again. For this reason, it is preferred if the agents in addition to the dyes (a) HC Blue No. 15, (b) Basic Red 51 and (c) Basic Orange 31 other cationic dyes contained only in minor amounts. It is particularly preferred if the agents are almost free of other cationic dyes which are structurally different from the dyes (b) and (c). By "nearly free" is meant a total amount of other cationic dyes structurally different from compounds (b) and (c) below 0.60 wt%, preferably below 0.30 wt%, more preferably below from 0.10% by weight and very particularly preferably below 0.05% by weight. These data in% by weight are based on the total amount of the agent. The agent may additionally contain at least one nonionic substantive dye. Nonionic dyes are characterized by having neither positive nor negative charges.

A nonionic substantive dye may be selected from the group consisting of HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, HC Orange 1, Disperse Orange 3, HC Red 1, HC Red 3, HC Red HC Red 10, HC Red 1, HC Red 1, HC Red BN, HC Blue 2, HC Blue 1 1, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, 1, 4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1, 4-bis (2-hydroxyethyl) amino-2-nitrobenzene, 3-nitro-4- (2-hydroxyethyl) aminophenol , 2- (2-hydroxyethyl) amino-4,6-dinitrophenol, 4- [(2-hydroxyethyl) amino] -3-nitro-1-methylbenzene, 1-amino-4- (2-hydroxyethyl) amino-5- chloro-2-nitrobenzene, 4-amino-3-nitrophenol, 1- (2'-ureidoethyl) amino-4-nitrobenzene, 2 - [(4-amino-2-nitrophenyl) amino] benzoic acid, 4 - [(3 Hydroxypropyl) amino] -3-nitrophenol, 4-nitro-o-phenylenediamine, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino 6-chloro-4-nitrophenol, 4-Et hylamino-3-nitrobenzoic acid, 2-chloro-6-ethylamino-4-nitrophenol and mixtures thereof.

Even with the addition of other nonionic dyes, it has been found that the gray coverage of agents, in addition to the dyes (a) HC Blue No. 15, (b) Basic Red 51 and (c) Basic Orange 31 additionally contain significant amounts of other nonionic dyes, may also get worse again. For this reason, it is preferred if the agents in addition to the dyes (a) HC Blue No. 15, (b) Basic Red 51 and (c) Basic Orange 31 other nonionic dyes contained only in minor amounts. It is particularly preferred if the agents are virtually free of further nonionic dyes. By "nearly free" is meant a total amount of additionally containing nonionic dyes structurally different from compound (a) below 0.60 wt%, preferably below 0.30 wt%, more preferably below 0, 10% by weight and very particularly preferably below 0.05% by weight. These data in% by weight are based on the total amount of the agent.

In addition, anionic substantive dyes may also be included in the composition. Anionic direct dyes are characterized by the presence of one or more negative charges. Anionic dyes do not carry cationic charges.

Examples of anionic dyes are those available under the international names or trade names Acid Yellow 1, Yellow 10, Acid Yellow 23, Acid Yellow 36, Acid Orange 7, Acid Red 33, Acid Red 52, Pigment Red 57: 1, Acid Blue 7, Acid Green 50, Acid Violet 43, Acid Black 1, Acid Black 52, bromophenol blue and tetrabromophenol blue known compounds. Since it has been found that the additional presence of significant amounts of one or more anionic dyes can worsen the gray coverage of the agents, it is preferred if the agents in addition to the dyes (a) HC Blue No. 15, (b) Basic Red 51 and (c) Basic Orange 31 other anionic dyes contained only in minor amounts. It is particularly preferred if the agents are virtually free of further anionic dyes. By "nearly free" is meant a total amount of additionally containing anionic dyes below 0.60 wt%, preferably below 0.30 wt%, more preferably below 0.10 wt%, and most preferably below of 0.05% by weight. These figures in% by weight are based on the total amount of the composition.

The agents can also be used together with oxidation dyes. Such oxidation colorants additionally contain at least one oxidation dye precursor, preferably at least one developer-type oxidation dye precursor and at least one coupler-type oxidation dye precursor. Suitable oxidation dye precursors of the developer type are selected from at least one compound from the group formed from p-phenylenediamine, p-toluenediamine, 2- (2-hydroxyethyl) -p-phenylenediamine, 2- (1,2-dihydroxyethyl) -p-phenylenediamine, N, N-bis- (2-hydroxyethyl) -p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, N- (4-amino-3-methylphenyl) -N- [3- (1H- imidazol-1-yl) propyl] amine, N, N'-bis (2-hydroxyethyl) -N, N'-bis (4-aminophenyl) -1, 3-diamino-propan-2-ol, bis- (2-hydroxy-5-aminophenyl) methane, 1, 3-bis (2,5-diaminophenoxy) propan-2-ol, N, N'-bis (4-aminophenyl) -1, 4-diazacycloheptane, 1 , 10-bis (2,5-diaminophenyl) -1, 4,7,10-tetraoxadecane, p-aminophenol, 4-amino

3-methylphenol, 4-amino-2-aminomethylphenol, 4-amino-2- (1, 2-dihydroxyethyl) phenol, 4-amino-2- (diethylaminomethyl) phenol, 4,5-diamino-1- (2-hydroxyethyl ) pyrazole, 2,4,5,6-tetraaminopyrimidine,

4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,3-diamino-6,7-dihydro-1H, 5H-pyrazolo [1,2-a] pyrazole -1-one and their physiologically acceptable salts.

Suitable coupler type oxidation dye precursors are selected from the group consisting of 3-aminophenol, 5-amino-2-methylphenol, 3-amino-2-chloro-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol, 5-amino 4-chloro-2-methylphenol, 5- (2-hydroxyethyl) amino-2-methylphenol, 2,4-dichloro-3-aminophenol, 2-aminophenol, 3-phenylenediamine, 2- (2,4-diaminophenoxy) ethanol, 1, 3-bis (2,4-diaminophenoxy) propane, 1-methoxy-2-amino-4- (2-hydroxyethylamino) benzene, 1, 3-bis (2,4-diaminophenyl) propane, 2.6 Bis (2'-hydroxyethylamino) -1-methylbenzene, 2 - ({3 - [(2-hydroxyethyl) amino] -4-methoxy-5-methylphenyl} amino) ethanol, 2 - ({3 - [(2- Hydroxyethyl) amino] -2-methoxy-5-methylphenyl} amino) ethanol, 2- ({3 - [(2-hydroxyethyl) amino] -4,5-dimethylphenyl} amino) ethanol, 2- [3-morpholine-4 -ylphenyl) amino] ethanol, 3-amino-4- (2-methoxyethoxy) -5-methylphenylamine, 1-amino-3-bis (2-hydroxyethyl) aminobenzene, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 1, 2,4-trihydroxybenzene, 2-amino-3-hydroxypyridine, 3-amino-2-meth ylamino-6-methoxypyridine, 2,6-dihydroxy-3,4-dimethylpyridine, 3,5-diamino-2,6-dimethoxypyridine, 1-phenyl-3-methylpyrazol-5-one, 1-naphthol, 1, 5 Dihydroxynaphthalene, 2,7- Dihydroxynaphthalene, 1, 7-dihydroxynaphthalene, 1, 8-dihydroxynaphthalene, 4-hydroxyindole, 6-hydroxyindole, 7-hydroxyindole, 4-hydroxyindoline, 6-hydroxyindoline, 7-hydroxyindoline or mixtures of these compounds or their physiologically acceptable salts.

The other additional developer components and coupler components may be used in an amount ranging from 0.0001 to 5.0% by weight, preferably 0.001 to 3.5% by weight, based in each case on the total weight of the composition. In this case, developer components and coupler components are generally used in approximately molar amounts to each other. Although the molar use has proven to be expedient, a certain excess of individual oxidation dye precursors is not disadvantageous, so that developer components and coupler components in a molar ratio of 1: 0.5 to 1: 3, in particular 1: 1 to 1: 2 , can stand.

Dyeing processes on keratin fibers usually take place in the weakly acidic to alkaline range, preferably in the slightly acidic to weakly alkaline medium. However, in order to preserve the keratin fibers as well as the skin as much as possible, the setting of too high a pH value is not desirable. The pH of the agents can in principle be between 1 and 12. Preferably, however, the pH is in the range of 1.0 to 8.0, preferably 2.0 to 8.5, more preferably 3.5 to 7.0, and most preferably 4.0 to 6.8 , The pH values are values measured at a temperature of 22 ° C, for example with a glass electrode.

In a further very particularly preferred embodiment, an agent is therefore characterized in that it is an aqueous or hydrous agent which has a pH of from 1.0 to 8.0, preferably from 2.0 to 8.5, more preferably from 3.5 to 7.0, and most preferably from 4.0 to 6.8.

The alkalizing agents which can be used to adjust the preferred pH are preferably selected from ammonia, alkanolamines, basic amino acids and inorganic alkalizing agents. Preferred inorganic alkalizing agents are magnesium carbonate, sodium hydroxide, potassium hydroxide, sodium silicate and sodium metasilicate. usable, organic alkalizing agents are preferably selected from monoethanolamine, 2-amino-2-methylpropanol and triethanolamine. The basic amino acids which can be used as alkalizing agents are preferably selected from the group formed from arginine, lysine, ornithine and histidine, more preferably arginine. Acidifiers which can be used to adjust the pH are organic acids, such as citric acid, acetic acid, ascorbic acid, benzoic acid, lactic acid, malic acid and maleic acid, as well as mineral acids, such as hydrochloric acid, sulfuric acid or phosphoric acid. The agents are able to stain keratin fibers with intensive staining results. Surprisingly, the gray coverage of the fibers could be increased simultaneously with the coloring. In this case, it has proven to be of particular advantage if the agents additionally contain one or more C 12 -C 30 fatty alcohols (d) in a minimum amount of 15.0% by weight.

Therefore, the agent preferably contains one or more C 12 -C 30 fatty alcohols in a total amount of at least 15.0% by weight. The basis of calculation for the amounts of the fatty alcohols (d) here is the total amount of all Ci2-C3o fatty alcohols containing in the middle, which is related to the total amount of the agent.

A Ci2-C3o-fatty alcohol in the context of the present invention is understood as meaning a C 12 -30 -alkanol or a C 12 -30-alkenol. The hydroxy group can be located at one end of the alk (en) yl chain or also in the middle part of the alk (en) yl chain. Preferably, the hydroxy group is terminal.

Furthermore, the Ci2-C3o-alk (en) ylkette may be linear or branched.

Preferred C 12 -C 30 fatty alcohols (d) are selected from the group consisting of

Dodecyl alcohol, lauryl alcohol (dodecan-1-ol)

- tetradecyl alcohol, myristyl alcohol (tetradecan-1-ol),

Hexadecyl alcohol, cetyl alcohol, palmityl alcohol (hexadecan-1-ol),

Octadecyl alcohol, stearyl alcohol (octadecan-1-ol),

Oleyl alcohol ((9Z) octadec-9-en-1-ol),

- eicosan-1-ol (arachyl alcohol),

- (9Z) -eicos-9-en-1-ol (gadoleyl alcohol),

- (5Z, 8Z, 11Z, 14Z) -eicosa-5,8, 11, 14-tetraene-1-ol (arachidonic alcohol),

- heneicosan-1-ol (heneicosyl alcohol),

- docosan-1-ol (behenyl alcohol),

- (13Z) -docos-13-en-1-ol (erucyl alcohol) and / or

- (13E) -docosen-1-ol (brassidyl alcohol).

Also particularly preferred is the use of mixtures of C 12 -C 30 fatty alcohols, for example a mixture of C 12 -C 16 -fatty alcohols, C 16 -C 18 -fatty alcohols, C 12 -C 18 -fatty alcohols C 18 -C 24 -fatty alcohol or C 20 -22 fatty alcohols.

The one or more C 12 -C 30 fatty alcohols are preferably present in a total amount of at least 15.0% by weight in the middle. A minimum amount of 15.0% by weight in this context means that 100 g of the composition contains a total amount of at least 15.0 g of one or more C12-C30 fatty alcohols. The maximum amount of Ci2-C3o-fatty alcohols on average can be scarce in principle below 100% by weight (that is, 100% by weight less the total amount of the dyes (a), (b) and (c)). However, it is preferred if the total amount of C 12 -C 30 fatty alcohols is not more than 60.0% by weight, more preferably not more than 30.0% by weight.

The best results could be obtained if one or more fatty alcohols (d) in a total amount of 15.0 to 60.0 wt .-%, preferably from 16.0 to 40.0 wt .-% were used. Particularly advantageous were amounts of from 17.0 to 30.0 wt .-%.

Within the group of Ci2-C3o-fatty alcohols long-chain and short-chain fatty alcohols can be distinguished. For the purposes of the present invention, short-chain fatty alcohols (d1) are understood as meaning fatty alcohols having 12 to 16 carbon atoms. Long-chain fatty alcohols (d2) are fatty alcohols with at least 18 carbon atoms. Within the group of long-chain fatty alcohols (d2), the fatty alcohols having a chain length of 18 to 24 carbon atoms are particularly preferred.

It has proven to be particularly advantageous with regard to the solution of the problem if the compositions contain both short-chain and long-chain fatty alcohols in specific quantitative ranges.

In a further very particularly preferred embodiment, an agent is therefore characterized in that it contains - in each case based on the total weight of the agent - (d 1) one or more C 12 -C 16 fatty alcohols in a total amount of 2.0 to 12.0% by weight. %, preferably from 3.0 to 10.0 wt .-%, more preferably from 4.0 to 8.0 wt .-% and particularly preferably from 4.5 to 7.5 wt .-%, and

(d2) one or more C18-C24 fatty alcohols in a total amount of 6.0 to 22.0 wt .-%, preferably from 8.0 to 16.0 wt .-%, more preferably from 4.0 to 14.0 Wt .-% and particularly preferably from 4.5 to 12.5 wt .-%.

Within this particularly preferred embodiment, the amounts of (d1) and (d2) are preferably to be chosen so that the total amount of Ci2-C3o-fatty alcohols used in the mean is at least 15.0 wt .-%.

If the dyeing with the substantive dyes (a), (b) and (c) and an oxidative lightening of the keratin fibers in one step, the means additionally contain an oxidizing agent, preferably hydrogen peroxide and / or one of its solid addition products of organic or inorganic Links.

In one embodiment, hydrogen peroxide itself is used as the aqueous solution. The concentration of a hydrogen peroxide solution on average is on the one hand by the legal Defines and on the other determined by the desired effect; preferably 6 to 12 wt .-% solutions are used in water. Suitable agents are characterized in that, based on the total weight of the ready-to-use agent, 0.5 to 20 wt .-%, preferably 1 to 12.5 wt .-%, particularly preferably 2.5 to 10 wt .-% and in particular from 3 to 6% by weight of hydrogen peroxide, in each case based on the total weight of the composition.

To achieve enhanced whitening and bleaching action, the composition may further contain at least one peroxo salt. Suitable peroxo salts are inorganic peroxo compounds, preferably selected from the group formed from ammonium peroxodisulfate, alkali metal peroxodisulfates, ammonium peroxomonosulfate, alkali metal peroxomonosulfates, alkali metal peroxodiphosphates and alkaline earth metal peroxides. To be mentioned in particular as Peroxosulfatsalze are ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate.

In a further embodiment, an agent is characterized in that it additionally contains at least one persulfate from the group consisting of ammonium peroxodisulfate, potassium peroxodisulfate and sodium peroxodisulfate.

The persulfates are each in an amount of 0.5 to 20 wt .-%, preferably 1 to 12.5 wt .-%, particularly preferably 2.5 to 10 wt .-% and in particular 3 to 6 wt .-%, based on the total weight of the ready-to-use agent containing the agent.

Ammonium peroxodisulfate (or ammonium persulfate) is a compound of formula (NH4) 2S20s. Potassium peroxodisulfate (or potassium persulfate) is a compound of the formula K2S2O8. Sodium peroxodisulfate (or sodium persulfate) is a compound of the formula Na2S20s.

In principle, the agents may also contain one or more zwitterionic and / or amphoteric, anionic, cationic and / or nonionic surfactants. It is preferred if the agent contains amphoteric and / or zwitterionic surfactants, but the content of anionic and cationic surfactants on average is as low as possible.

Furthermore, the colorants, especially if they additionally contain hydrogen peroxide, at least one stabilizer or complexing agent. Particularly preferred stabilizers are phenacetin, alkali benzoates (sodium benzoate) and salicylic acid. Furthermore, all complexing agents of the prior art can be used. Preferred complexing agents are nitrogen-containing polycarboxylic acids, in particular ethylenediaminetetraacetic acid (EDTA) and ethylenediamine disuccinic acid (EDDS), and phosphonates, in particular 1-hydroxyethane-1, 1-diphosphonate (HEDP) and / or ethylenediamine tetramethylenephosphonate (EDTMP) and / or diethylenetriaminepentamethylenephosphonate (DTPMP) or their sodium salts , In addition, the compositions may contain further active ingredients, auxiliaries and additives, such as nonionic polymers, cationic polymers, zwitterionic and amphoteric polymers, silicones, structurants, hair conditioning compounds, fiber structure improving agents, dyes for staining the agent, anti-dandruff agents, amino acids, oligopeptides, protein hydrolysates on an animal and / or plant basis, light stabilizers, UV blockers, active ingredients, vitamins, provitamins, vitamin precursors, plant extracts, oils, fats, waxes, swelling and penetrating agents, opacifiers, pearlescers, pigments, thickeners and propellants.

The choice of these other substances will be made by those skilled in the art according to the desired properties of the agents. The additional active ingredients and auxiliaries are preferably used in the compositions in amounts of from 0.0001 to 25% by weight, in particular from 0.0005 to 15% by weight, based on the total weight of the application mixture.

The agents may be formulated as single-component agents or as multi-component agents such as two-component agents or three-component agents and used accordingly. Separation into multicomponent systems is particularly suitable where incompatibilities of the ingredients are to be expected or feared; the agent to be used in such systems is manufactured by the consumer just prior to use by mixing the component.

The agent for changing the color of keratinic fibers is always understood to mean the ready-to-use agent.

If the agent is made available to the user in the form of a one-component agent, then the ready-to-use agent does not have to be prepared first, but can be taken directly from the container in which it was made up and applied to the keratinic fibers.

Bleaching agents, however, are usually two-component products in which an oxidizing agent-containing component (A1) is mixed with an (alkalizing) agent (A2) shortly before use and this ready-to-use mixture is applied to the hair.

In this case, the agent is the ready-to-use agent which was prepared shortly before use by mixing (A1) and (A2). In this case, the substantive dyes (a), (b) and (c) in the component (A1) (that is, together with the oxidizing agent) or in the component (A2) (together with the alkalizing agent) can be formulated.

It is also possible that the ready-to-use agent is prepared shortly before application to human hair by mixing 3 components, wherein

component (A1) comprises at least one substantive dye (a), (b) and (c)

the component (A2) at least one first oxidizing agent (for example hydrogen peroxide) and

- Component (A3) contains at least one second oxidizing agent (for example one or more peroxodisulfate salts).

By using the dyes HC Blue No. 15, Basic Red 51 and Basic Orange 31 can be dyed keratin fibers with intense color result. In addition, the use of these dyes leads to exceptionally good gray covers.

The gray coverage can be determined according to the following procedure: A graying and a non-graying strand of hair are measured colorimetrically before staining and after staining (determination of the Lab values). From these values, the gray coverage index is determined according to the following formula:

'dE (dY - dH) ^

GAI = * 100

dE {uY - dH)

GAI: Gray Coverage Index (in percent)

dY: dyed graying hair

dH: colored pigmented hair

uY: undyed gray hair

The higher the gray coverage index, the better the gray coverage.

Particularly good gray coverage values were obtained when HC Blue No. 15, Basic Red 51 and Basic Orange 31 were used in the above-described quantitative ranges in the colorants.

Another object of the present invention is therefore the use of a composition according to the invention for dyeing human hair with improved gray coverage. With respect to further preferred embodiments of the use mutatis mutandis applies to the means said.

Another object of the present invention is finally a method for increasing the gray coverage in the dyeing of human hair, characterized in that an agent according to the invention is applied to the hair.

With respect to further preferred embodiments of the method mutatis mutandis applies to the means and uses said.

Examples

The following formulations were prepared. Unless otherwise indicated, the amounts given are in percent by weight and the active substance used.

Uncolored buffalo hair (yak hair, representing graying hair) and undyed, Kerling Euronaturhaar 6-0 (Kerling light brown) were measured colorimetrically.

Then, the previously prepared dyeing formulations were applied to each of the two hairs (liquor ratio 4: 1, 4 g of cream per g of hair) and allowed to act for 30 minutes. Thereafter, the strands of hair were rinsed and dried. The dyed and dried strands of hair were measured colorimetrically a second time.

The gray coverage index was determined according to the following formula:

GAI: Gray Coverage Index (in percent)

dY: dyed buffalo belly hair

dH: dyed pigmented hair (Kerling Euronaturhaar light brown 6-0)

uY: undyed buffalo belly hair (gray hair)

The ΔΕ values given in the GAI formula are determined by the following formula: AE = J (L - L ') ² + (a - a'f + (b - b'f where for the L, a and b values the values given in the GAI formula (Lab values of dyed buffalo belly hair, undyed buffalo belly hair, and dyed pigmented hair.) The higher the gray cover index, the better the gray coverage of an agent.

No. Dyes GAI

V1 0.3% by weight Basic Red 51 33.32

0, 1 wt .-% Basic Red 51

V2 28,21

0.2% by weight Basic Orange 31

V3 0.3 wt.% HC Blue No. 15 29.60

0.15% by weight of HC Blue No. 15

E1 0.05% by weight Basic Red 51 58, 10

0, 1 wt .-% Basic Orange 31

Claims

claims

1. Agent for dyeing keratinic fibers, in particular human hair, containing in a cosmetic carrier - based on the total weight of the agent -

(a) 0.13 to 0.90 wt% of HC Blue No. 15

(b) 0.01 to 0.50 wt% Basic Red 51 and

(c) 0.01 to 0.50 wt% Basic Orange 31.

2. Composition according to claim 1, characterized in that it - based on the total weight of the composition - 0, 13 to 0.80 wt .-%, preferably 0, 13 to 0.65 wt .-%, more preferably 0, 13 to 0.50 wt.%, even more preferably 0.15 to 0.40 wt.% and most preferably 0.15 to 0.30 wt. 15 contains.

3. Composition according to one of claims 1 to 2, characterized in that it - based on the total weight of the composition - 0.01 to 0.30 wt .-%, preferably 0.01 to 0.10 wt .-%, further preferably 0.01 to 0.08 wt .-% and most preferably 0.03 to 0.06 wt .-% Basic Red 51 contains.

4. Composition according to one of claims 1 to 3, characterized in that it - based on the total weight of the composition - 0.01 to 0.40 wt .-%, preferably 0.03 to 0.30 wt .-%, further preferably 0.06 to 0.20 wt .-% and most preferably 0.08 to 0, 15 wt .-% Basic Orange 31 contains.

5. Composition according to one of claims 1 to 4, characterized in that it additionally contains at least 15.0 wt .-% - based on the total agent - of one or more Ci2-C3o-fatty alcohols.

6. Composition according to claim 5, characterized in that it - in each case based on the total weight of the composition - one or more Ci2-Ci6-fatty alcohols in a total amount of 2.0 to 12.0 wt .-% and one or more Ci8- C24 fatty alcohols in a total amount of 6.0 to 22.0 wt .-%.

7. Composition according to one of claims 1 to 6, characterized in that - based on the total weight of the composition - 0.5 to 12.5 wt .-%, preferably 1, 5 to 10.5 wt .-%, further preferably 2.5 to 8.0 wt .-% and most preferably 3.0 to 6.0 wt .-% hydrogen peroxide.

8. Composition according to one of claims 1 to 7, characterized in that it is an aqueous or hydrous agent, which has a pH of 1, 0 to 8.0, preferably from 2.0 to 8.5, more preferably from 3.5 to 7.0, and most preferably from 4.0 to 6.8.

9. A method for increasing the gray coverage in the dyeing of human hair, in which an agent is applied to the hair, which in a cosmetic carrier - based on the total weight of the agent -

(a) 0.13 to 0.90 wt% of HC Blue No. 15

(b) 0.01 to 0.50 wt% Basic Red 51 and

(c) 0.01 to 0.50 wt% Basic Orange 31

contains.

10. Use of an agent which in a cosmetic carrier - based on the total weight of the agent -

(a) 0.13 to 0.90 wt% of HC Blue No. 15

(b) 0.01 to 0.50 wt% Basic Red 51 and

(c) 0.01 to 0.50 wt% Basic Orange 31

contains

to increase the gray coverage in the dyeing of human hair.