METHOD FOR COLORING KERATINIC MATERIAL, COMPLETING THE USE OF A SILICON ORGANIC COMPOUND, A COLOR-GIVEN COMPOUND, A SEALING REAGENT AND A POLYMER-CONTAINING AFTERTREATMENT AGENT

Description

[0001] The present application relates to a method for treating keratinous material, in particular human hair, which comprises the application of three agents (a), (b) and (c). Agent (a) is characterized by its content of at least one organic silicon compound (a1). Agent (b) contains at least one sealing reagent. At least one of agents (a) or (b) further contains at least one coloring compound. Agent (c) is characterized by the presence of a selected polymer.

[0002] Another subject matter of this application is a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, in particular human hair, which comprises at least four separately packaged agents (a'), (a"), (b) and (c). Agent (a) used in the process described above can be prepared from agents (a') and (a").

[0003] Another subject matter of this application is a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, in particular human hair, which comprises at least four agents (a'), (a"), (a‴), (b) and (c), packaged separately from one another. Agent (a) used in the process described above can be prepared from agents (a'), (a") and (a‴).

[0004] Altering the shape and color of keratin fibers, especially hair, is an important area of ​​modern cosmetics. Depending on the desired color, professionals are familiar with various dyeing systems for changing hair color. For permanent, intense colorations with good colorfastness and gray coverage, oxidation dyes are typically used. These dyes usually contain oxidation dye precursors, so-called developer components and coupler components, which react with oxidizing agents such as hydrogen peroxide to form the actual dyes. Oxidation dyes are characterized by very long-lasting color results.

[0005] When using direct dyes, pre-formed pigments diffuse from the dye into the hair fiber. Compared to oxidative hair coloring, dyes produced with direct dyes are less durable and wash out more quickly. Dyes made with direct dyes typically remain on the hair for between 5 and 20 washes.

[0006] The use of color pigments is well-known for temporary color changes to hair and / or skin. Color pigments are generally understood to be insoluble, coloring substances. These are present in the coloring formulation in the form of small particles and are simply deposited on the hair fibers and / or skin surface. Therefore, they can usually be completely removed by a few washes with surfactant-containing cleansers. Various products of this type are available on the market under the name "hair mascara."

[0007] If a user desires particularly long-lasting color, the use of oxidative dyes has so far been their only option. However, despite numerous optimization attempts, an unpleasant ammonia or amine odor cannot be completely avoided with oxidative hair coloring. The hair damage still associated with the use of oxidative dyes also has a detrimental effect on the user's hair.

[0008] EP 2168633 B1 addresses the challenge of creating long-lasting hair colors using pigments. The document teaches that by using a combination of a pigment, an organic silicon compound, a film-forming polymer, and a solvent, it is possible to create hair colors that are particularly resistant to shampooing.

[0009] However, there is still a need to improve the wash fastness of dyeings based on pigments and / or direct dyes and without oxidation dye precursors.

[0010] Accordingly, the object of the present invention was to provide a dyeing system that possesses colorfastness properties comparable to oxidative dyeing. In particular, the wash fastness should be outstanding, but without the use of the oxidative dye precursors typically employed for this purpose. A technology was sought that would enable the permanent fixation of coloring compounds known from the prior art (such as pigments or direct dyes) to the hair.

[0011] Surprisingly, it has now been found that the aforementioned problem can be solved excellently when keratinous materials, especially human hair, are colored using a process in which at least three agents (a), (b), and (c) are applied to the keratinous materials (hair). The first agent (a) contains at least one organic silicon compound from the silane group with one, two, or three silicon atoms. The second agent (b) contains at least one sealing reagent. Furthermore, at least one of the agents (a) or (b) contains at least one coloring compound. Agent (c) contains a mixture of an amino-functional polyorganosiloxane and a polyvalent metal salt.

[0012] When the three agents (a), (b) and (c) were used in a dyeing process, keratinous material could be dyed with particularly high color intensity.

[0013] A first object of the present invention is a method for dyeing keratinous material, in particular human hair, comprising the following steps: Application of an agent (a) to the keratinous material, wherein the agent (a) comprises: (a1) at least one organic silicon compound from the group of silanes having one, two or three silicon atoms; application of an agent (b) to the keratinous material, wherein the agent (b) comprises: (b1) at least one sealing reagent; and application of an agent (c) to the keratinous material, wherein the agent (c) comprises: (c1) at least one hydroxyamine-functionalized silicone polymer. wherein at least one of the agents (a) and (b) further contains at least one colouring compound from the group of pigments and / or direct dyes.

[0014] The work leading to this invention has shown that the preferably successive application of agents (a) to (c) enables the production of very stable and wash-fast colorations on keratinous materials. Without being limited to this theory, it is suggested in this context that the application of an organic silicon compound (a1) leads to the formation of a particularly resistant first film on the keratinous material. With the application of the second agent (b), the film applied to the keratinous material is sealed and thus made more resistant to washing and / or abrasion. Colored films can be obtained by using at least one coloring compound from the group of pigments and / or direct dyes in at least one of agents (a) and (b).It has been found that the layers or films formed on the keratinous material are further stabilized by the hydroxyamine-functionalized silicone polymer (c1) contained in the medium (c), resulting in particularly intense and long-lasting colorations.

[0015] This specific type of coating process—i.e., the application of silane (a1), the separate application of the sealing reagent (b1), and subsequent post-treatment with a hydroxyamine-functionalized silicone polymer (c1)—resulted in improved resistance to external influences in the film system produced in this way, which could be multilayered. The coloring compounds (a2) were thus permanently fixed to the keratinous material, enabling the creation of highly wash-fast colors with good resistance to shampooing. Keratinous material

[0016] Keratinous material includes hair, skin, and nails (such as fingernails and / or toenails). Wool, fur, and feathers also fall under the definition of keratinous material.

[0017] The term "keratinous material" preferably refers to human hair, human skin, and human nails, especially fingernails and toenails. Human hair is particularly preferred as a keratinous material. Means (a), (b) and (c)

[0018] In the process according to the invention, the agents (a), (b) and (c) are applied to the keratinous material, in particular human hair. The three agents (a), (b) and (c) are different from each other.

[0019] In other words, a first object of the present invention is a method for treating keratinous material, in particular human hair, comprising the following steps: Application of an agent (a) to the keratinous material, wherein the agent (a) contains: (a1) at least one organic silicon compound from the group of silanes having one, two or three silicon atoms, application of an agent (b) to the keratinous material, wherein the agent (b) contains: (b1) at least one sealing reagent, and application of an agent (c) to the keratinous material, wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer, wherein at least one of the agents (a) and (b) further contains at least one coloring compound from the group of pigments and / or direct dyes, and wherein the two agents (a), (b) and (c) are different from each other. Means (a)

[0020] Preferably, the composition (a) contains the essential ingredient (a1) of the invention in a cosmetic carrier, particularly preferably in an aqueous or aqueous-alcoholic cosmetic carrier. This cosmetic carrier can be liquid, gel-like, or cream-like. Paste-like, solid, or powder-like cosmetic carriers can also be used for the preparation of the composition (a). For the purpose of hair treatment, in particular hair coloring, such carriers are, for example, creams, emulsions, gels, or surfactant-containing foaming solutions, such as shampoos, foam aerosols, foam formulations, or other preparations suitable for application to the hair.

[0021] Preferably, the cosmetic carrier contains at least 2% water by weight. More preferably, the water content is above 10% by weight, even more preferably above 20% by weight, and particularly preferably above 40% by weight. The cosmetic carrier can also be aqueous-alcoholic. For the purposes of this invention, aqueous-alcoholic solutions are understood to be aqueous solutions containing 2 to 70% by weight of a C1-C4 alcohol, in particular ethanol or isopropanol. The compositions according to the invention can additionally contain further organic solvents, such as methoxybutanol, benzyl alcohol, ethyl diglycol, or 1,2-propylene glycol. All water-soluble organic solvents are preferred. Organic silicon compounds from the group of silanes (a1)

[0022] The ingredient (a1) essential to the invention contains at least one organic silicon compound from the group of silanes with one, two or three silicon atoms.

[0023] Particularly preferably, the agent (a) contains at least one organic silicon compound (a1) selected from silanes having one, two or three silicon atoms, wherein the organic silicon compound comprises one or more hydroxyl groups and / or hydrolyzable groups per molecule.

[0024] These organic silicon compounds (a1) or organic silanes contained in the mean (a) are reactive compounds.

[0025] Organic silicon compounds, also alternatively referred to as organosilicon compounds, are compounds that either have a direct silicon-carbon bond (Si-C) or in which the carbon is linked to the silicon atom via an oxygen, nitrogen, or sulfur atom. The organic silicon compounds according to the invention are compounds containing one to three silicon atoms. Particularly preferably, the organic silicon compounds contain one or two silicon atoms.

[0026] According to IUPAC rules, the term silane refers to a group of chemical compounds based on a silicon backbone and hydrogen. In organic silanes, the hydrogen atoms are wholly or partially replaced by organic groups such as (substituted) alkyl groups and / or alkoxy groups. In organic silanes, some of the hydrogen atoms may also be replaced by hydroxyl groups.

[0027] In a particularly preferred embodiment, a method according to the invention is characterized by the application of an agent (a) to the keratinous material, wherein the agent (a) contains at least one organic silicon compound (a1) selected from silanes having one, two or three silicon atoms, wherein the organic silicon compound also comprises one or more hydroxyl groups or hydrolyzable groups per molecule.

[0028] In a particularly preferred embodiment, a method according to the invention is characterized by the application of an agent (a) to the keratinous material, wherein the agent (a) contains at least one organic silicon compound (a1) selected from silanes having one, two or three silicon atoms, wherein the organic silicon compound also comprises one or more basic chemical functions and one or more hydroxyl groups or hydrolyzable groups per molecule.

[0029] This basic group or basic chemical function can be, for example, an amino group, an alkylamino group, or a dialkylamino group, preferably linked to a silicon atom via a linker. Preferably, the basic group is an amino group, a C1-C6 alkylamino group, or a di(C1-C6)alkylamino group.

[0030] The hydrolyzable group(s) is preferably a C1-C6 alkoxy group, in particular an ethoxy group or a methoxy group. It is preferred that the hydrolyzable group is directly bonded to the silicon atom. If, for example, the hydrolyzable group is an ethoxy group, the organic silicon compound preferably contains a structural unit R'R"R‴Si-O-CH2-CH3. The substituents R', R", and R‴ represent the three remaining free valences of the silicon atom.

[0031] A particularly preferred method according to the invention is characterized in that the agent (a) contains at least one organic silicon compound selected from silanes having one, two or three silicon atoms, wherein the organic silicon compound preferably comprises one or more basic chemical functions and one or more hydroxyl groups or hydrolyzable groups per molecule.

[0032] Particularly good results were obtained when the agent (a) contains at least one organic silicon compound (a1) of formula (I) and / or (II).

[0033] The compounds of formulas (I) and (II) are organic silicon compounds selected from silanes having one, two or three silicon atoms, wherein the organic silicon compound comprises one or more hydroxyl groups and / or hydrolyzable groups per molecule.

[0034] In a further particularly preferred embodiment, the method is characterized in that an agent is applied to the keratinous material (or the human hair), wherein the agent (a) contains at least one organic silicon compound (a) of formula (I) and / or (II), R 1 R 2 NL-Si(OR 3 ) a (R 4 ) b (I), wherein R1, R2 independently represent a hydrogen atom or a C1-C6 alkyl group, L represents a linear or branched divalent C1-C20 alkylene group, R3 represents a hydrogen atom or a C1-C6 alkyl group, R4 represents a C1-C6 alkyl group, a represents an integer from 1 to 3, and b represents the integer 3 - a, (R5O)c(R6)dSi-(A)e-[NR7-(A')]f-[O-(A")]g-[NR8-(A‴)]h-Si(R6')d'(OR5')c'(II), where R5, R5', R5" independently represent a hydrogen atom or a C1-C6 alkyl group, R6, R6' and R6" independently represent a C 1-C6 alkyl group, A, A', A", A‴ and A"" independently represent a linear or branched, divalent C1-C20 alkylene group, R7 and R8 independently represent a hydrogen atom, a C1-C6 alkyl group, a hydroxy-C1-C6 alkyl group, a C2-C6 alkenyl group,an amino-C1-C6 alkyl group or a grouping of formula (III) stands - (Aʺʺ)-Si(R6'') d''(OR5'') c'' (III), where c represents an integer from 1 to 3, d represents the integer 3 - c, c' represents an integer from 1 to 3, d' represents the integer 3 - c', c" represents an integer from 1 to 3, d" represents the integer 3 - c", e represents 0 or 1, f represents 0 or 1, g represents 0 or 1, h represents 0 or 1, provided that at least one of the residues from e, f, g and h is non-0.

[0035] The substituents R1, R2, R3, R4, R5, R5', R5'', R6, R6', R6'', R7, R8, L, A, A', A", A‴, and A''" in the compounds of formulas (I) and (II) are explained below by way of example: Examples of a C1-C6 alkyl group are the groups methyl, ethyl, propyl, isopropyl, n-butyl, s-butyl, and t-butyl, n-pentyl, and n-hexyl. Propyl, ethyl, and methyl are preferred alkyl groups. Examples of a C2-C6 alkenyl group are vinyl, allyl, but-2-enyl, but-3-enyl, and isobutenyl; preferred C2-C6 alkenyl groups are vinyl and allyl. Preferred examples of a hydroxy-C 1-C6 alkyl groups are hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, 4-hydroxybutyl, 5-hydroxypentyl, and 6-hydroxyhexyl groups; a 2-hydroxyethyl group is particularly preferred. Examples of an amino-C1-C6 alkyl group are the aminomethyl group, the 2-aminoethyl group, and the 3-aminopropyl group.The 2-aminoethyl group is particularly preferred. Examples of a linear divalent C1-C20 alkylene group are, for example, the methylene group (-CH2-), the ethylene group (-CH2-CH2-), the propylene group (-CH2-CH2-CH2-), and the butylene group (-CH2-CH2-CH2-CH2-). The propylene group (-CH2-CH2-CH2-) is particularly preferred. From a chain length of 3 carbon atoms, divalent alkylene groups can also be branched. Examples of branched, divalent C3-C20 alkylene groups are (-CH2-CH(CH3)-) and (-CH2-CH(CH3)-CH2-).

[0036] In the organic silicon compounds of formula (I) R1R2NL-Si(OR3)a(R4)b(I), the substituents R1 and R2 independently represent a hydrogen atom or a C1-C6 alkyl group. Most preferably, both substituents R1 and R2 represent a hydrogen atom.

[0037] In the middle part of the organic silicon compound is the structural unit or linker -L- which stands for a linear or branched, divalent C 1 -C 20 -alkylene group.

[0038] A divalent C1-C20 alkylene group can alternatively be described as a divalent or dicoordinate C1-C20 alkylene group, meaning that each group L can form two bonds. One bond is from the amino group R1R2N to the linker L, and the second bond is between the linker L and the silicon atom.

[0039] Preferably, -L- represents a linear, divalent C1-C20 alkylene group. More preferably, -L- represents a linear divalent C1-C6 alkylene group. Particularly preferably, -L- represents a methylene group (-CH2-), an ethylene group (-CH2-CH2-), a propylene group (-CH2-CH2-CH2-), or a butylene group (-CH2-CH2-CH2-CH2-). Most preferably, L represents a propylene group (-CH2-CH2-CH2-).

[0040] The linear propylene group (-CH 2 -CH 2 -CH 2 -) can alternatively be called the propane-1,3-diyl group.

[0041] The organic silicon compounds of formula (I) R 1 R 2 NL-Si(OR 3 ) a (R 4 ) b (I) according to the invention each have at one end the silicon-containing group -Si(OR 3 ) a (R 4 ) b .

[0042] In the terminal structural unit -Si(OR 3 ) a (R 4 ) b, the residue R 3 represents a hydrogen atom or a C 1 -C 6 alkyl group, and the residue R 4 represents a C 1 -C 6 alkyl group. Particularly preferably, R 3 and R 4 independently represent a methyl group or an ethyl group.

[0043] Here, 'a' represents an integer from 1 to 3, and 'b' represents the integer 3 - 'a'. If 'a' represents the number 3, then 'b' equals 0. If 'a' represents the number 2, then 'b' equals 1. If 'a' represents the number 1, then 'b' equals 2.

[0044] Particularly resistant films could be produced if the agent (a) contains at least one organic silicon compound (a1) of formula (I) in which the residues R 3 , R 4 independently stand for a methyl group or for an ethyl group.

[0045] When using the inventive method for dyeing keratinous material, dyeings with the best wash fastness could be obtained analogously if the agent (a) contains at least one organic silicon compound of formula (I) in which the residues R 3 , R 4 independently represent a methyl group or an ethyl group.

[0046] Furthermore, dyes with the best wash fastness could be obtained when the agent (a) contains at least one organic silicon compound of formula (I), in which the residue a represents the number 3. In this case, the residue b represents the number 0.

[0047] In a further preferred embodiment, the agent (a) used in the method is characterized in that it contains at least one organic silicon compound (a1) of formula (I), wherein R 3 , R 4 independently represent a methyl group or an ethyl group, and a represents the number 3 and b represents the number 0.

[0048] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (I), R 1 R 2 NL-Si(OR 3 ) a (R 4 ) b (I), wherein R1, R2 both represent a hydrogen atom, and L represents a linear, divalent C1-C6 alkylene group, preferably a propylene group (-CH2-CH2-CH2-) or an ethylene group (-CH2-CH2-), R3 represents a hydrogen atom, an ethyl group or a methyl group, R4 represents a methyl group or an ethyl group, a represents the number 3 and b represents the number 0.

[0049] Organic silicon compounds of formula (I) that are particularly suitable for solving the problem set out in the invention are - (3-Aminopropyl)triethoxysilan

[0050] - (3-Aminopropyl)trimethoxysilan

[0051] - 1-(3-Aminopropyl)silantriol

[0052] - (2-Aminoethyl)triethoxysilan

[0053] - (2-Aminoethyl)trimethoxysilan

[0054] -1-(2-Aminoethyl)silantriol

[0055] - (3-Dimethylaminopropyl)triethoxysilan

[0056] - (3-Dimethylaminopropyl)trimethoxysilan

[0057] -1-(3-Dimethylaminopropyl)silantriol

[0058] - (2-Dimethylaminoethyl)triethoxysilan.

[0059] - (2-Dimethylaminoethyl)trimethoxysilan und

[0060] -1-(2-Dimethylaminoethyl)silanetriol

[0061]

[0062] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one organic silicon compound (a1) selected from the group consisting of (3-Aminopropyl)triethoxysilane (3-Aminopropyl)trimethoxysilane 1-(3-Aminopropyl)silanetriol (2-Aminoethyl)triethoxysilane (2-Aminoethyl)trimethoxysilane 1-(2-Aminoethyl)silanetriol (3-Dimethylaminopropyl)triethoxysilane (3-Dimethylaminopropyl)trimethoxysilane 1-(3-Dimethylaminopropyl)silanetriol (2-Dimethylaminoethyl)triethoxysilane. (2-Dimethylaminoethyl)trimethoxysilane and / or 1-(2-Dimethylaminoethyl)silanetriol.

[0063] The aforementioned organic silicon compounds of formula (I) are commercially available. (3-Aminopropyl)trimethoxysilane, for example, can be purchased from Sigma-Aldrich. (3-Aminopropyl)triethoxysilane is also commercially available from Sigma-Aldrich.

[0064] In a further embodiment, the agent according to the invention contains at least one organic silicon compound (a1) of formula (II) (R 5 O) c (R 6 ) d Si-(A) e -[NR 7 -(A')] f -[O-(A")] g -[NR 8 -(A‴)] h -Si(R 6 ') d' (OR 5 ') c' (II).

[0065] The silicon organometallic compounds of formula (II) according to the invention each bear at their two ends the silicon-containing groups (R 5 O) c (R 6 ) d Si- and -Si(R 6 ') d' (OR 5 ') c' .

[0066] The central part of the molecule of formula (II) contains the groups -(A) e - and -[NR 7 -(A')] f - and -[O-(A")] g - and -[NR 8 -(A‴)] h -. Each of the substituents e, f, g, and h can independently represent the number 0 or 1, provided that at least one of the substituents e, f, g, and h is different from 0. In other words, an organic silicon compound of formula (II) according to the invention contains at least one group from the group consisting of -(A)- and -[NR 7 -(A')]- and -[O-(A")]- and -[NR 8 -(A‴)]-.

[0067] In the two terminal structural units (R 5 O) c (R 6 ) d Si- and -Si(R 6 ') d' (OR 5 ') c', the residues R5, R5', R5" independently represent either a hydrogen atom or a C 1 -C 6 alkyl group. The residues R6, R6' and R6" independently represent a C 1 -C 6 alkyl group.

[0068] Here, c represents an integer from 1 to 3, and d represents the integer 3 - c. If c represents the number 3, then d equals 0. If c represents the number 2, then d equals 1. If c represents the number 1, then d equals 2.

[0069] Similarly, c' represents an integer from 1 to 3, and d' represents the integer 3 - c'. If c' represents the number 3, then d' equals 0. If c' represents the number 2, then d' equals 1. If c' represents the number 1, then d' equals 2.

[0070] Films with the highest stability or dyes with the best wash fastness were obtained when the residues c and c' both represent the number 3. In this case, d and d' both represent the number 0.

[0071] In a further preferred embodiment, a method is characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (II), (R 5 O) c (R 6 ) d Si-(A) e -[NR 7 -(A')] f -[O-(A")] g -[NR 8 -(A‴)] h -Si(R 6 ') d' (OR 5 ') c' (II), wherein R5 and R5' independently represent a methyl group or an ethyl group, c and c' both represent the number 3, and d and d' both represent the number 0.

[0072] If c and c' both represent the number 3 and d and d' both represent the number 0, the organic silicon compounds according to the invention correspond to formula (IIa) (R 5 O) 3 Si-(A) e -[NR 7 -(A')] f -[O-(A")] g -[NR 8 -(A‴)] h -Si(OR 5 ') 3 (IIa).

[0073] The residues e, f, g, and h can independently represent the number 0 or 1, with at least one residue from e, f, g, and h being non-zero. The abbreviations e, f, g, and h thus define which of the groupings -(A) e - and -[NR 7 -(A')] f - and -[O-(A")] g - and -[NR 8 -(A‴)] h - are located in the middle section of the organic silicon compound of formula (II).

[0074] In this context, the presence of certain groupings has proven particularly advantageous with regard to increasing wash fastness. Especially good results were obtained when at least two of the residues e, f, g, and h represent the number 1. It is particularly advantageous when both e and f represent the number 1. Furthermore, it is particularly advantageous when both g and h represent the number 0.

[0075] If e and f both represent the number 1 and g and h both represent the number 0, the organic silicon compounds according to the invention correspond to the formula (IIb) (R 5 O) c (R 6 ) d Si-(A)-[NR 7 -(A')]-Si(R 6 ') d' (OR 5 ') c' (IIb).

[0076] The residues A, A', A", A‴, and A''" independently represent a linear or branched, divalent C1-C20 alkylene group. Preferably, the residues A, A', A", A‴, and A''" independently represent a linear, divalent C1-C20 alkylene group. More preferably, the residues A, A', A", A‴, and A''" independently represent a linear, divalent C1-C6 alkylene group. Particularly preferably, the residues A, A', A", A‴, and A'''' independently represent a methylene group (-CH2-), an ethylene group (-CH2-CH2-), a propylene group (-CH2-CH2-CH2-), or a butylene group (-CH2-CH2-CH2-CH2-). The residues A, A', A", A‴ and A"" are particularly favored to represent a propylene group (-CH 2 -CH 2 -CH 2 -).

[0077] The divalent C 1 -C 20 alkylene group can alternatively be referred to as a divalent or divalent C 1 -C 20 alkylene group, meaning that each group A, A', A", A‴ and Aʺʺ can form two bonds.

[0078] The linear propylene group (-CH 2 -CH 2 -CH 2 -) can alternatively be called the propane-1,3-diyl group.

[0079] If the remainder f represents the number 1, then the organic silicon compound of formula (II) according to the invention contains a structural grouping -[NR 7 -(A')]-.

[0080] If the remainder h represents the number 1, then the organic silicon compound of formula (II) according to the invention contains a structural grouping -[NR 8 -(A‴)]-.

[0081] Here, the residues R 7 and R 8 independently represent a hydrogen atom, a C 1 -C 6 alkyl group, a hydroxy-C 1 -C 6 alkyl group, a C 2 -C 6 alkyl group, an amino-C 1 -C 6 alkyl group or a group of the formula (III) - (Aʺʺ)-Si(R 6 ") d "(OR 5 '') c '' (III).

[0082] The residues R7 and R8 are particularly preferred to represent, independently of each other, a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a grouping of formula (III).

[0083] If the remainder f represents the number 1 and the remainder h represents the number 0, the organic silicon compound according to the invention contains the group [NR 7 -(A')], but not the group -[NR 8 -(A‴)]. If the remainder R7 now represents a group of formula (III), then the compound (a) contains an organic silicon compound with 3 reactive silane groups.

[0084] In a further preferred embodiment, a method is characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (II), (R 5 O) c (R 6 ) d Si-(A) e -[NR 7 -(A')] f -[O-(A")] g -[NR 8 -(A‴)] h -Si(R 6 ') d' (OR 5 ') c' (II), wherein e and f both represent the number 1, g and h both represent the number 0, A and A' independently represent a linear, divalent C 1 -C 6 -alkylene group and R7 represents a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a grouping of formula (III).

[0085] In a further preferred embodiment, a method is characterized in that the agent (a) contains at least one organic silicon compound of formula (II), wherein e and f both represent the number 1, g and h both represent the number 0, A and A' independently represent a methylene group (-CH 2 -), an ethylene group (-CH 2 -CH 2 -) or a propylene group (-CH 2 -CH 2 -CH 2 ), and R7 represents a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a grouping of formula (III).

[0086] Organic silicon compounds of formula (II) that are well suited to solving the problem described in the invention are - 3-(Trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine

[0087] - 3-(Triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine

[0088] - N-Methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine

[0089] - N-Methyl-3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine

[0090] - 2-[Bis[3-(trimethoxysilyl)propyl]amino]-ethanol

[0091] - 2-[Bis[3-(triethoxysilyl)propyl]amino]-ethanol

[0092] - 3-(Trimethoxysilyl)-N,N-bis[3-(trimethoxysilyl)propyl]-1-propanamin

[0093] - 3-(Triethoxysilyl)-N,N-bis[3-(triethoxysilyl)propyl]-1-propanamin

[0094] - N1,N1-Bis[3-(trimethoxysilyl)propyl]-1,2-ethanediamin,

[0095] - N1,N1-Bis[3-(triethoxysilyl)propyl]-1,2-ethanediamin,

[0096] - N,N-Bis[3-(trimethoxysilyl)propyl]-2-propen-1-amin

[0097] - N,N-Bis[3-(triethoxysilyl)propyl]-2-propen-1-amin

[0098]

[0099] The aforementioned organic silicon compounds of formula (II) are commercially available. Bis(trimethoxysilylpropyl)amine with CAS number 82985-35-1, for example, can be purchased from Sigma-Aldrich.

[0100] Bis[3-(triethoxysilyl)propyl]amine with CAS number 13497-18-2 can be purchased from Sigma-Aldrich, for example.

[0101] N-Methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]- 1-propanamine is also alternatively known as Bis(3-trimethoxysilylpropyl)-N-methylamine and can be purchased commercially from Sigma-Aldrich or Fluorochem.

[0102] 3-(Triethoxysilyl)-N,N-bis[3-(triethoxysilyl)propyl]-1-propanamine with CAS number 18784-74-2 can be purchased, for example, from Fluorochem or Sigma-Aldrich.

[0103] In a further preferred embodiment, a method is characterized in that the agent (a) contains at least one organic silicon compound (a1) selected from the group consisting of 3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine 3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine N-methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine N-Methyl-3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine 2-[Bis[3-(trimethoxysilyl)propyl]amino]-ethanol 2-[Bis[3-(triethoxysilyl)propyl]amino]-ethanol 3-(trimethoxysilyl)-N,N-bis[3-(trimethoxysilyl)propyl]-1-propanamine 3-(Triethoxysilyl)-N,N-bis[3-(triethoxysilyl)propyl]-1-propanamine N1,N1-Bis[3-(trimethoxysilyl)propyl]-1,2-Ethanediamine, N1,N1-Bis[3-(triethoxysilyl)propyl]-1,2-Ethanediamine, N,N-Bis[3-(trimethoxysilyl)propyl]-2-Propen-1-amine and / or N,N-Bis[3-(triethoxysilyl)propyl]-2-Propen-1-amine.

[0104] In further experiments, especially dyeing experiments, it has also proven to be particularly advantageous if the agent applied in the process to the keratinous material (a) contains at least one organic silicon compound of formula (IV) R 9 Si(OR 10 ) k (R 11 ) m (IV).

[0105] The compounds of formula (IV) are organic silicon compounds selected from silanes having one, two or three silicon atoms, wherein the organic silicon compound comprises one or more hydroxyl groups and / or hydrolyzable groups per molecule.

[0106] The organic silicon compounds of formula (IV) can also be referred to as silanes of the alkyl-alkoxy-silane or alkyl-hydroxy-silane type, R 9 Si(OR 10 ) k (R 11 ) m (IV), wherein R 9 represents a C 1 -C 18 alkyl group, R 10 represents a hydrogen atom or a C 1 -C 6 alkyl group, R 11 represents a C 1 -C 6 alkyl group, k represents an integer from 1 to 3, and m represents the integer 3 - k.

[0107] In a further preferred embodiment, the method is characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (IV) R 9 Si(OR 10 ) k (R 11 ) m (IV), wherein R 9 represents a C 1 -C 18 alkyl group, R 10 represents a hydrogen atom or a C 1 -C 6 alkyl group, R 11 represents a C 1 -C 6 alkyl group, k represents an integer from 1 to 3, and m represents the integer 3 - k.

[0108] In a further preferred embodiment, a method is characterized in that the agent (a) contains, in addition to the organic silicon compounds of formula (I), at least one further organic silicon compound of formula (IV) R 9 Si(OR 10 ) k (R 11 ) m (IV), wherein R 9 represents a C 1 -C 18 alkyl group, R 10 represents a hydrogen atom or a C 1 -C 6 alkyl group, R 11 represents a C 1 -C 6 alkyl group, k represents an integer from 1 to 3, and m represents the integer 3 - k.

[0109] In a further preferred embodiment, a method is characterized in that the agent (a) contains, in addition to the organic silicon compounds of formula (II), at least one further organic silicon compound of formula (IV) R 9 Si(OR 10 ) k (R 11 ) m (IV), wherein R 9 represents a C 1 -C 18 alkyl group, R 10 represents a hydrogen atom or a C 1 -C 6 alkyl group, R 11 represents a C 1 -C 6 alkyl group, k represents an integer from 1 to 3, and m represents the integer 3 - k.

[0110] In a further preferred embodiment, a method is characterized in that the agent (a) contains, in addition to the organic silicon compounds of formula (I) and / or (II), at least one further organic silicon compound of formula (IV) R 9 Si(OR 10 ) k (R 11 ) m (IV), wherein R 9 represents a C 1 -C 18 alkyl group, R 10 represents a hydrogen atom or a C 1 -C 6 alkyl group, R 11 represents a C 1 -C 6 alkyl group, k represents an integer from 1 to 3, and m represents the integer 3 - k.

[0111] In the organic silicon compounds of formula (IV), the group R 9 represents a C 1-C 18 alkyl group. This C 1-C 18 alkyl group is saturated and can be linear or branched. Preferably, R 9 represents a linear C 1-C 18 alkyl group. More preferably, R 9 represents a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-pentyl group, an n-hexyl group, an n-octyl group, an n-dodecyl group, or an n-octyldecyl group. Particularly preferably, R 9 represents a methyl group, an ethyl group, an n-hexyl group, or an n-octyl group.

[0112] In the organic silicon compounds of form (IV), the R10 group represents a hydrogen atom or a C1-C6 alkyl group. R10 particularly preferably represents a methyl group or an ethyl group.

[0113] In the organic silicon compounds of form (IV), the R 11 group represents a C 1 -C 6 alkyl group. R 11 particularly preferably represents a methyl group or an ethyl group.

[0114] Furthermore, k represents an integer from 1 to 3, and m represents the integer 3 - k. If k represents the number 3, then m equals 0. If k represents the number 2, then m equals 1. If k represents the number 1, then m equals 2.

[0115] Particularly stable films, i.e., dyes with particularly good wash fastness, could be obtained when an agent (a) containing at least one organic silicon compound (a1) of formula (IV), in which the residue k represents the number 3, was used in the process. In this case, the residue m represents the number 0.

[0116] Organic silicon compounds of formula (IV) that are particularly suitable for solving the problem described in the invention are - Methyltrimethoxysilane

[0117] - Methyltriethoxysilane

[0118] - Ethyltrimethoxysilane

[0119] - Ethyltriethoxysilane

[0120] - n-Hexyltrimethoxysilane

[0121] - n-Hexyltriethoxysilane

[0122] - n-Octyltrimethoxysilane

[0123] - n-Octyltriethoxysilane

[0124] - n-Dodecyltrimethoxysilane and / or

[0125] - n-Dodecyltriethoxysilane.

[0126]

[0127] Octadecyltrimethoxysilane and / or octadecyltrimethoxysilane.

[0128] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (IV) selected from the group consisting of Methyltrimethoxysilane Methyltriethoxysilane Ethyltrimethoxysilane Ethyltriethoxysilane Hexyltrimethoxysilane Hexyltriethoxysilane Octyltrimethoxysilane Octyltriethoxysilane Dodecyltrimethoxysilane Dodecyltriethoxysilane Octadecyltrimethoxysilane and / or Octadecyltriethoxysilane.

[0129] The previously described organic silicon compounds are reactive compounds. In this context, it has proven preferable if the agent (a) contains one or more organic silicon compounds (a1) in a total amount of 0.1 to 20 wt.%, preferably 1 to 15 wt.%, and particularly preferably 2 to 8 wt.%, based on the total weight of the agent (a).

[0130] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) - based on the total weight of the agent (a) - contains one or more organic silicon compounds (a1) in a total amount of 0.1 to 20 wt.%, preferably 1 to 15 wt.% and particularly preferably 2 to 8 wt.%.

[0131] To achieve particularly good staining results, it is especially advantageous to include the organic silicon compounds of formula (I) and / or (II) in specific quantity ranges in the composition (a). Particularly preferably, the composition (a) contains – based on the total weight of the composition (a) – one or more organic silicon compounds of formula (I) and / or (II) in a total amount of 0.1 to 10 wt.%, preferably 0.5 to 5 wt.%, and most preferably 0.5 to 3 wt.%.

[0132] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) - based on the total weight of the agent (a) - contains one or more organic silicon compounds of formula (I) and / or (II) in a total amount of 0.1 to 10 wt.%, preferably 0.5 to 5 wt.% and particularly preferably 0.5 to 3 wt.%.

[0133] Furthermore, it has proven particularly advantageous if the organic silicon compound(s) of formula (IV) are also contained in the compound (a) in certain quantity ranges. Particularly preferably, the compound (a) contains – based on the total weight of the compound (a) – one or more organic silicon compounds of formula (IV) in a total amount of 0.1 to 20 wt.%, preferably 2 to 15 wt.%, and most preferably 4 to 9 wt.%.

[0134] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) - based on the total weight of the agent (a) - contains one or more organic silicon compounds of formula (IV) in a total amount of 0.1 to 20 wt.%, preferably 2 to 15 wt.% and particularly preferably 3.2 to 10 wt.%.

[0135] In the course of the work leading to this invention, it has been found that particularly stable and uniform films could be obtained on the keratinous material even when the agent (a) contains two structurally different organic silicon compounds.

[0136] In a further preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least two structurally different organic silicon compounds.

[0137] In a particularly preferred embodiment, a method according to the invention is characterized in that an agent (a) is applied to the keratinous material, which contains at least one organic silicon compound of formula (I) selected from the group consisting of (3-aminopropyl)triethoxysilane and (3-aminopropyl)trimethoxysilane, and additionally contains at least one organic silicon compound of formula (IV) selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, hexyltrimethoxysilane and hexyltriethoxysilane.

[0138] In a further preferred embodiment, a method is characterized in that the means (a) contains - in relation to the total weight of the means (a): 0.5 to 5 wt% of at least one first organic silicon compound (a1) selected from the group consisting of (3-aminopropyl)trimethoxysilane, (3-aminopropyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, (2-aminoethyl)triethoxysilane, (3-dimethylaminopropyl)trimethoxysilane, (3-dimethylaminopropyl)triethoxysilane, (2-dimethylaminoethyl)trimethoxysilane and (2-dimethylaminoethyl)triethoxysilane, and 3.2 to 10 wt% of at least one second organic silicon compound (a1) selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane and dodecyltriethoxysilane.

[0139] In this embodiment, the composition (a) contains one or more organic silicon compounds of a first group in a total amount of 0.5 to 3% by weight. The organic silicon compounds of this first group are selected from the group consisting of (3-aminopropyl)trimethoxysilane, (3-aminopropyl)triethoxysilane, (2-aminoethyl)trimethoxysilane, (2-aminoethyl)triethoxysilane, (3-dimethylaminopropyl)trimethoxysilane, (3-dimethylaminopropyl)triethoxysilane, (2-dimethylaminoethyl)trimethoxysilane and / or (2-dimethylaminoethyl)triethoxysilane.

[0140] In this embodiment, the composition (a) contains one or more organosilicon compounds of a second group in a total amount of 3.2 to 10% by weight. The organosilicon compounds of this second group are selected from the group consisting of methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, octadecyltrimethoxysilane and / or octadecyltrimethoxysilane.

[0141] The organosilicon compound may also be present in the agent (a) in the form of condensation products and / or (partial) hydrolysates of the organosilicon compounds. The condensation products may, for example, comprise the condensation products of two, three, or four organosilicon compounds. pH value of the medium (a)

[0142] It has proven preferable if the agent (a) is formulated as an aqueous agent adjusted to an alkaline pH.

[0143] To adjust the pH value, the agent (a) may contain at least one pH adjusting agent, for example an acidifying agent or alkalizing agent. Means (b)

[0144] The method for treating keratinous material comprises, in addition to the application of agent (a), the application of agent (b). Agent (b) is characterized in that it contains at least one sealing reagent (b1).

[0145] Agent (b) is a post-treatment agent, and its application to the keratinous material treated with agent (a) results in the colorations obtained in the process being more durable. In particular, the wash fastness and rub fastness of the colorations obtained in the process can be improved by applying agent (b).

[0146] It is preferred that the sealing reagent comprises a compound selected from the group consisting of film-forming polymers, alkalizing agents, acidifying agents and mixtures thereof.

[0147] It may be preferable for the sealing reagent to comprise a film-forming polymer.

[0148] Polymers are defined as macromolecules with a molecular weight of at least 1000 g / mol, preferably at least 2500 g / mol, and particularly preferably at least 5000 g / mol, which consist of identical, repeating organic units. The polymers of the present invention can be synthetically produced polymers obtained by polymerization of one type of monomer or by polymerization of different, structurally distinct types of monomers. If the polymer is produced by polymerization of one type of monomer, it is called a homopolymer. If structurally distinct types of monomers are used in the polymerization, the resulting polymer is called a copolymer.

[0149] The maximum molecular weight of the polymer depends on the degree of polymerization (number of polymerized monomers) and the batch size and is also determined by the polymerization method. For the purposes of the present invention, it is preferred that the maximum molecular weight of the film-forming, hydrophobic polymer (c) is not more than 10⁷ < g / mol, preferably not more than 10⁶ < g / mol, and particularly preferably not more than 10⁵ < g / mol.

[0150] For the purposes of the invention, a film-forming polymer is understood to be a polymer capable of forming a film on a substrate, for example, on a keratinous material or a keratinous fiber. The formation of a film can be demonstrated, for example, by examining the keratinous material treated with the polymer under a microscope.

[0151] The film-forming polymers (b1) in the medium (b) can be hydrophilic or hydrophobic.

[0152] In a first embodiment, it may be preferred to use at least one hydrophobic, film-forming polymer in the means (b).

[0153] A hydrophobic polymer is defined as a polymer that has a solubility in water at 25 °C (760 mmHg) of less than 1 wt.%.

[0154] The water solubility of the film-forming, hydrophobic polymer can be determined, for example, as follows: 1 g of the polymer is placed in a beaker. The volume is then increased to 100 g with water. A magnetic stir bar is added, and the mixture is heated to 25 °C on a magnetic stirrer while stirring. Stirring continues for 60 minutes. The aqueous mixture is then visually inspected. If the polymer-water mixture cannot be visually inspected due to high turbidity, it is filtered. If a proportion of undissolved polymer remains on the filter paper, the polymer's solubility is less than 1 wt%.

[0155] Examples include acrylic acid-type polymers, polyurethanes, polyesters, polyamides, polyureas, cellulose polymers, nitrocellulose polymers, silicone polymers, acrylamide-type polymers, and polyisoprenes.

[0156] Particularly suitable film-forming, hydrophobic polymers include, for example, polymers from the group of acrylic acid copolymers, methacrylic acid copolymers, acrylic acid ester homopolymers or copolymers, methacrylic acid ester homopolymers or copolymers, acrylamide homopolymers or copolymers, methacrylic acid amide homopolymers or copolymers, vinylpyrrolidone copolymers, vinyl alcohol copolymers, vinyl acetate copolymers, ethylene homopolymers or copolymers, propylene homopolymers or copolymers, styrene homopolymers or copolymers, polyurethanes, polyesters and / or polyamides.

[0157] In a further preferred embodiment, a composition (b) is characterized in that it contains at least one film-forming, hydrophobic polymer (b1) selected from the group consisting of the copolymers of acrylic acid, the copolymers of methacrylic acid, the homopolymers or copolymers of acrylic acid esters, the homopolymers or copolymers of methacrylic acid esters, the homopolymers or copolymers of acrylic acid amides, the homopolymers or copolymers of methacrylic acid amides, the copolymers of vinylpyrrolidone, the copolymers of vinyl alcohol, the copolymers of vinyl acetate, the homopolymers or copolymers of ethylene, the homopolymers or copolymers of propylene, the homopolymers or copolymers of styrene, the polyurethanes, the polyesters and / or the polyamides.

[0158] To solve the problem according to the invention, film-forming hydrophobic polymers have proven particularly suitable, which are selected from the group of synthetic polymers, polymers obtainable by radical polymerization or natural polymers.

[0159] Other particularly suitable film-forming hydrophobic polymers can be selected from the homopolymers or copolymers of olefins, such as cycloolefins, butadiene, isoprene or styrene, vinyl ethers, vinylamides, the esters or amides of (meth)acrylic acid with at least one C 1 -C 20 alkyl group, one aryl group or one C 2 -C 10 hydroxyalkyl group.

[0160] Other film-forming hydrophobic polymers may be selected from the homo- or copolymers of isooctyl(meth)acrylate, isononyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, lauryl(meth)acrylate, isopentyl(meth)acrylate, n-butyl(meth)acrylate, isobutyl(meth)acrylate, ethyl(meth)acrylate, methyl(meth)acrylate, tert-butyl(meth)acrylate, stearyl(meth)acrylate, hydroxyethyl(meth)acrylate, 2-hydroxypropyl(meth)acrylate, 3-hydroxypropyl(meth)acrylate and / or mixtures thereof.

[0161] Other film-forming hydrophobic polymers may be selected from the homo- or copolymers of (meth)acrylamide, N-alkyl(meth)acrylamides, especially those with C2-C18 alkyl groups, such as N-ethylacrylamide, N-tert-butylacrylamide, N-octylacrylamide, N-di(C1-C4)alkyl(meth)acrylamide.

[0162] Other preferred anionic copolymers are, for example, copolymers of acrylic acid, methacrylic acid, or their C1-C6 alkyl esters, as marketed under the INCI declaration Acrylates Copolymers. A suitable commercial product is, for example, Aculyn®< 33 from Rohm & Haas. Copolymers of acrylic acid, methacrylic acid, or their C1-C6 alkyl esters and the esters of an ethylene-unsaturated acid and an alkoxylated fatty alcohol are also preferred. Suitable ethylene-unsaturated acids are, in particular, acrylic acid, methacrylic acid, and itaconic acid; suitable alkoxylated fatty alcohols are, in particular, steareth-20 or ceteth-20.

[0163] Particularly favored polymers currently on the market include, for example, Aculyn®< 22 (Acrylates / Steareth-20 Methacrylate Copolymer), Aculyn®< 28 (Acrylates / Beheneth-25 Methacrylate Copolymer), Structure 2001®< (Acrylates / Steareth-20 Itaconate Copolymer), Structure 3001®< (Acrylates / Ceteth-20 Itaconate Copolymer), Structure Plus®< (Acrylates / Aminoacrylates C10-30 Alkyl PEG-20 Itaconate Copolymer), Carbopol®< 1342, 1382, Ultrez 20, Ultrez 21 (Acrylates / C10-30 Alkyl Acrylate Crosspolymer), Synthalen W 2000®< (Acrylates / Palmeth-25 Acrylate Copolymer), and Soltex OPT, distributed by Rohme and Haas. (Acrylates / C12-22 alkyl methacrylate copolymer).

[0164] Suitable polymers based on vinyl monomers include, for example, the homo- and copolymers of N-vinylpyrrolidone, vinylcaprolactam, vinyl-(C1-C6-)alkyl-pyrrole, vinyloxazole, vinylthiazole, vinylpyrimidine or vinylimidazole.

[0165] Furthermore, the copolymers octylacrylamide / acrylates / butylaminoethyl-methacrylate copolymer, such as those commercially marketed under the trade names AMPHOMER ®< or LOVOCRYL ®< 47 by NATIONAL STARCH, or the copolymers of acrylates / octylacrylamide marketed under the trade names DERMACRYL ®< LT and DERMACRYL ®< 79 by NATIONAL STARCH, are particularly well suited.

[0166] Suitable polymers based on olefins include, for example, the homo- and copolymers of ethylene, propylene, butene, isoprene and butadiene.

[0167] In another embodiment, block copolymers comprising at least one block of styrene or styrene derivatives can be used as film-forming hydrophobic polymers. These block copolymers can be copolymers containing one or more additional blocks besides a styrene block, such as styrene / ethylene, styrene / ethylene / butylene, styrene / butylene, styrene / isoprene, or styrene / butadiene. BASF markets such polymers commercially under the trade name "Luvitol HSB".

[0168] Surprisingly, it turned out that particularly intense and wash-fast colorations could be obtained when the agent (b) contained at least one film-forming polymer as a sealing reagent (b1) selected from the group of homopolymers and copolymers of acrylic acid, homopolymers and copolymers of methacrylic acid, homopolymers and copolymers of acrylic acid esters, homopolymers and copolymers of methacrylic acid esters, homopolymers and copolymers of acrylic acid amides, homopolymers and copolymers of methacrylic acid amides, homopolymers and copolymers of vinylpyrrolidone, homopolymers and copolymers of vinyl alcohol, homopolymers and copolymers of vinyl acetate, homopolymers and copolymers of ethylene, homopolymers and copolymers of propylene, homopolymers and copolymers of styrene, polyurethanes, polyesters and polyamides.

[0169] In a further preferred embodiment, a method is characterized in that the agent (b) contains at least one film-forming polymer as a sealing reagent (b1) selected from the group consisting of homopolymers and copolymers of acrylic acid, homopolymers and copolymers of methacrylic acid, homopolymers and copolymers of acrylic acid esters, homopolymers and copolymers of methacrylic acid esters, homopolymers and copolymers of acrylic acid amides, homopolymers and copolymers of methacrylic acid amides, homopolymers and copolymers of vinylpyrrolidone, homopolymers and copolymers of vinyl alcohol, homopolymers and copolymers of vinyl acetate, homopolymers and copolymers of ethylene, homopolymers and copolymers of propylene, homopolymers and copolymers of styrene, polyurethanes, polyesters and polyamides.

[0170] In a further embodiment, it may be preferred to use at least one hydrophilic, film-forming polymer as a sealing reagent (b1) in the means (b).

[0171] A hydrophilic polymer is understood to be a polymer that has a solubility in water at 25 °C (760 mmHg) of more than 1 wt.%, preferably of more than 2 wt.%.

[0172] The water solubility of the film-forming, hydrophilic polymer can be determined, for example, as follows: 1 g of the polymer is placed in a beaker. The volume is then increased to 100 g with water. A magnetic stir bar is added, and the mixture is heated to 25 °C on a magnetic stirrer while stirring. Stirring continues for 60 minutes. The aqueous mixture is then visually inspected. A completely dissolved polymer appears macroscopically homogeneous. If the polymer-water mixture cannot be visually inspected due to high turbidity, the mixture is filtered. If no undissolved polymer remains on the filter paper, then the polymer's solubility is greater than 1 wt%.

[0173] Nonionic, anionic and cationic polymers can be used as film-forming, hydrophilic polymers.

[0174] Suitable film-forming, hydrophilic polymers can be selected, for example, from the group of polyvinylpyrrolidone (co)polymers, polyvinyl alcohol (co)polymers, vinyl acetate (co)polymers, carboxyvinyl (co)polymers, acrylic acid (co)polymers, methacrylic acid (co)polymers, natural gums, polysaccharides and / or acrylamide (co)polymers.

[0175] Furthermore, it is particularly preferred to use polyvinylpyrrolidone (PVP) and / or a vinylpyrrolidone-containing copolymer as the film-forming hydrophilic polymer.

[0176] In a further particularly preferred embodiment, a means (b) is characterized in that it contains at least one film-forming, hydrophilic polymer selected from the group consisting of polyvinylpyrrolidone (PVP) and the copolymers of polyvinylpyrrolidone.

[0177] It is still preferred if the agent contains polyvinylpyrrolidone (PVP) as a film-forming, hydrophilic polymer. Surprisingly, the wash fastness of the dyes obtained with PVP-containing agents (b9) was also very good.

[0178] Particularly suitable polyvinylpyrrolidones are available, for example, under the name Luviskol ®< K from BASF SE, in particular Luviskol ®< K 90 or Luviskol ®< K 85 from BASF SE.

[0179] Another particularly suitable polyvinylpyrrolidone (PVP) is the polymer PVP K30, which is distributed by Ashland (ISP, POI Chemical). PVP K30 is a polyvinylpyrrolidone that is highly soluble in cold water and has the CAS number 9003-39-8. The molecular weight of PVP K30 is approximately 40,000 g / mol.

[0180] Other particularly suitable polyvinylpyrrolidones are the substances known under the trade names LUVITEC K 17, LUVITEC K 30, LUVITEC K 60, LUVITEC K 80, LUVITEC K 85, LUVITEC K 90 and LUVITEC K 115, which are available from BASF.

[0181] The use of film-forming hydrophilic polymers (b1) from the group of polyvinylpyrrolidone copolymers has also led to particularly good and wash-fast color results.

[0182] Particularly suitable film-forming, hydrophilic polymers in this context are vinylpyrrolidone-vinyl ester copolymers, such as those marketed under the trademark Luviskol® (BASF). Luviskol® VA 64 and Luviskol® VA 73, both vinylpyrrolidone / vinyl acetate copolymers, are especially preferred nonionic polymers.

[0183] Of the vinylpyrrolidone-containing copolymers, a styrene / VP copolymer and / or a vinylpyrrolidone-vinyl acetate copolymer and / or a VP / DMAPA Acrylates copolymer and / or a VP / Vinyl Caprolactam / DMAPA Acrylates copolymer are particularly preferred in cosmetic compositions.

[0184] Vinylpyrrolidone-vinyl acetate copolymers are marketed under the name Luviskol®< VA by BASF SE. A VP / vinyl caprolactam / DMAPA acrylates copolymer is marketed, for example, under the trade name Aquaflex®< SF-40 by Ashland Inc. A VP / DMAPA acrylates copolymer is marketed, for example, under the name Styleze CC-10 by Ashland and is a highly preferred vinylpyrrolidone-containing copolymer.

[0185] Other suitable copolymers of polyvinylpyrrolidone include those obtained by reacting N-vinylpyrrolidone with at least one other monomer from the group consisting of V-vinylformamide, vinyl acetate, ethylene, propylene, acrylamide, vinylcaprolactam, vinylcaprolactone and / or vinyl alcohol.

[0186] In a further particularly preferred embodiment, a means (b) is characterized in that it contains at least one film-forming, hydrophilic polymer (b1) selected from the group consisting of polyvinylpyrrolidone (PVP), vinylpyrrolidone / vinyl acetate copolymers, vinylpyrrolidone / styrene copolymers, vinylpyrrolidone / ethylene copolymers, vinylpyrrolidone / propylene copolymers, vinylpyrrolidone / vinylcaprolactam copolymers, vinylpyrrolidone / vinylformamide copolymers and / or vinylpyrrolidone / vinyl alcohol copolymers.

[0187] Another suitable copolymer of vinylpyrrolidone is the polymer known under the INCI name Maltodextrin / VP Copolymer.

[0188] Furthermore, intensely colored keratinous material, especially hair, could be obtained with very good wash fastness when a non-ionic, film-forming, hydrophilic polymer was used as the film-forming, hydrophilic polymer.

[0189] In a further embodiment, the agent (b) may contain at least one non-ionic, film-forming, hydrophilic polymer (b1).

[0190] According to the invention, a nonionic polymer is understood to be a polymer which, in a protic solvent – ​​such as water – under standard conditions, does not contain any structural units with permanently cationic or anionic groups that would require compensation by counterions to maintain electroneutrality. Examples of cationic groups include quaternized ammonium groups, but not protonated amines. Examples of anionic groups include carboxyl and sulfonic acid groups.

[0191] Products are particularly preferred which contain, as a nonionic, film-forming, hydrophilic polymer, at least one polymer selected from the group consisting of Polyvinylpyrrolidone, copolymers of N-vinylpyrrolidone and vinyl esters of carboxylic acids with 2 to 18 carbon atoms, in particular of N-vinylpyrrolidone and vinyl acetate, copolymers of N-vinylpyrrolidone and N-vinylimidazole and methacrylamide, copolymers of N-vinylpyrrolidone and N-vinylimidazole and acrylamide, copolymers of N-vinylpyrrolidone with N,N-Di(C1 to C4)-alkylamino-(C2 to C4)-alkylacrylamide.

[0192] When copolymers of N-vinylpyrrolidone and vinyl acetate are used, it is again preferred if the molar ratio of the structural units contained in the monomer N-vinylpyrrolidone to the structural units contained in the polymer from the monomer vinyl acetate is in the range of 20:80 to 80:20, and particularly from 30:70 to 60:40. Suitable copolymers of vinylpyrrolidone and vinyl acetate are available, for example, from BASF SE under the trademarks Luviskol®< VA 37, Luviskol®< VA 55, Luviskol®< VA 64 and Luviskol®< VA 73.

[0193] Another particularly preferred polymer is selected from the polymers with the INCI name VP / Methacrylamide / Vinyl Imidazole Copolymer, which are available, for example, under the trade name Luviset Clear from BASF SE.

[0194] Another particularly preferred non-ionic, film-forming, hydrophilic polymer is a copolymer of N-vinylpyrrolidone and N,N-dimethylaminiopropylmethacrylamide, which, for example, is sold under the trade name Styleze ®< CC 10 by the company ISP under the INCI name VP / DMAPA Acrylates Copolymer.

[0195] A cationic polymer is the copolymer of N-vinylpyrrolidone, N-vinylcaprolactam, N-(3-dimethylaminopropyl)methacrylamide and 3-(methacryloylamino)propyl-lauryl-dimethylammonium chloride (INCI name: Polyquaternium-69), which is marketed, for example, under the trade name AquaStyle ®< 300 (28-32 wt% active substance in ethanol-water mixture, molecular weight 350000) by the company ISP.

[0196] Other suitable film-forming, hydrophilic polymers include, for example, Vinylpyrrolidone-vinylimidazolium methochloride copolymers, as offered under the names Luviquat ®< FC 370, FC 550 and the INCI name Polyquaternium-16 as well as FC 905 and HM 552, vinylpyrrolidone-vinylcaprolactam-acrylate terpolymers, as offered commercially with acrylic acid esters and acrylic acid amides as the third monomer building block, for example under the name Aquaflex ®< SF 40.

[0197] Polyquaternium-11 is the reaction product of diethyl sulfate with a copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate. Suitable commercial products are available, for example, under the names Dehyquart® < CC 11 and Luviquat® < PQ 11 PN from BASF SE or Gafquat 440, Gafquat 734, Gafquat 755 or Gafquat 755N from Ashland Inc.

[0198] Polyquaternium-46 is the reaction product of vinylcaprolactam and vinylpyrrolidone with methylvinylimidazolium methosulfate and is available, for example, under the name Luviquat® from BASF SE. Polyquaternium-46 is preferably used in an amount of 1 to 5% by weight, based on the total weight of the cosmetic composition. It is particularly preferred that polyquaternium-46 is used in combination with a cationic guar compound. It is even highly preferred that polyquaternium-46 is used in combination with a cationic guar compound and polyquaternium-11.

[0199] Suitable anionic film-forming, hydrophilic polymers include, for example, acrylic acid polymers, which can be in uncrosslinked or crosslinked form. Corresponding products are commercially available, for example, under the trade names Carbopol 980, 981, 954, 2984 and 5984 from Lubrizol, or under the names Synthalen M and Synthalen K from 3V Sigma (The Sun Chemicals, Inter Harz).

[0200] Examples of suitable film-forming, hydrophilic polymers from the group of natural gums are xanthan gum, gellan gum, and carob gum.

[0201] Examples of suitable film-forming, hydrophilic polymers from the group of polysaccharides are hydroxyethylcellulose, hydroxypropylcellulose, ethylcellulose and carboxymethyl cellulose.

[0202] Suitable film-forming, hydrophilic polymers from the acrylamide group include, for example, polymers prepared from monomers of (meth)acrylamido-C1-C4-alkylsulfonic acid or its salts. Corresponding polymers can be selected from the polymers of polyacrylamidomethanesulfonic acid, polyacrylamidoethanesulfonic acid, polyacrylamidopropanesulfonic acid, poly2-acrylamido-2-methylpropanesulfonic acid, poly2-methylacrylamido-2-methylpropanesulfonic acid, and / or poly2-methylacrylamido-n-butanesulfonic acid.

[0203] Preferred polymers of poly(meth)arylamido-C1-C4-alkylsulfonic acids are cross-linked and at least 90% neutralized. These polymers can be cross-linked or uncross-linked.

[0204] Cross-linked and wholly or partially neutralized polymers of the poly-2-acrylamido-2-methylpropanesulfonic acid type are known under the INCI names "Ammonium Polyacrylamido-2-methyl-propanesulfonate" or "Ammonium Polyacryldimethyltauramide".

[0205] Another preferred polymer of this type is the cross-linked poly-2-acrylamido-2-methyl-propanesulfonic acid polymer marketed by Clariant under the trade name Hostacerin AMPS, which is partially neutralized with ammonia.

[0206] In a further explicitly preferred embodiment, a method is characterized in that the agent (b) contains at least one anionic, film-forming polymer (b1).

[0207] In this context, the best results were obtained when the agent (b) contains at least one film-forming polymer as a sealing reagent (b1) comprising at least one structural unit of formula (PI) and at least one structural unit of formula (P-II). where M stands for a hydrogen atom or for ammonium (NH 4 ), sodium, potassium, ½ magnesium or ½ calcium.

[0208] In a further preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one film-forming polymer as a sealing reagent (b1) comprising at least one structural unit of formula (PI) and at least one structural unit of formula (P-II). where M stands for a hydrogen atom or for ammonium (NH 4 ), sodium, potassium, ½ magnesium or ½ calcium.

[0209] If M stands for a hydrogen atom, the structural unit of the formula (PI) is based on an acrylic acid unit.

[0210] If M represents an ammonium counterion, the structural unit of the formula (PI) is based on the ammonium salt of acrylic acid.

[0211] If M represents a sodium counterion, the structural unit of the formula (PI) is based on the sodium salt of acrylic acid.

[0212] If M represents a potassium counterion, the structural unit of the formula (PI) is based on the potassium salt of acrylic acid.

[0213] If M represents half an equivalent of a magnesium counterion, the structural unit of the formula (PI) is based on the magnesium salt of acrylic acid.

[0214] If M represents half an equivalent of a calcium counterion, the structural unit of the formula (PI) is based on the calcium salt of acrylic acid.

[0215] The film-forming polymer(s) (b1) are preferably used in the composition (b) in specific quantity ranges. In this context, it has proven particularly advantageous for solving the problem set out in the invention if the composition (b) contains one or more film-forming polymers (b1) in a total quantity of 0.1 to 18 wt.%, preferably 1 to 16 wt.%, more preferably 5 to 14.5 wt.%, and most preferably 8 to 12 wt.%, based on the total weight of the composition (b).

[0216] In a further preferred embodiment, a method is characterized in that the agent (b) - based on the total weight of the agent (b) - contains one or more film-forming polymers (b1) in a total amount of 0.1 to 18 wt.%, preferably 1 to 16 wt.%, more preferably 5 to 14.5 wt.% and most preferably 8 to 12 wt.%.

[0217] The application of agent (b) is intended to seal and fix the film initially produced by the application of agent (a). The film produced by agent (b) is preferably itself uncolored. In this way, the uncolored film produced by agent (b) lies above the colored film produced by agent (a) and can protect the latter from external influences. This also ensures that any abrasion of the second film (b) that occurs to a certain extent does not lead to any color changes in the entire film system. Therefore, it is particularly preferred if agent (b) contains no or only very small amounts of coloring compounds.

[0218] In a further preferred embodiment, a method is characterized in that the total amount of the color-giving compounds contained in the medium (b) from the group of pigments and direct dyes is below 0.2 wt.%, preferably below 0.1 wt.%, more preferably below 0.05 wt.% and most preferably below 0.01 wt.%.

[0219] The total amount of color-giving compounds from the group of pigments and direct dyes is related to the total weight of the agent (b).

[0220] In an alternative embodiment, the sealing reagent (b1) contains an alkalizing agent.

[0221] The alkalizing agent is particularly preferably selected from the group consisting of ammonia, C 2 -C 6 -alkanolamines, basic amino acids, alkali metal hydroxides and alkaline earth metal hydroxides.

[0222] In a further particularly preferred embodiment, a method is characterized in that the agent (b) contains at least one alkalizing agent as a sealing reagent (b1) selected from the group consisting of ammonia, C 2 -C 6 -alkanolamines, basic amino acids, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal silicates, alkali metal metasilicates, alkaline earth metal silicates, alkaline earth metal metasilicates, alkali metal carbonates and alkaline earth metal carbonates.

[0223] It has been found that post-treatment with an agent (b) containing ammonia has a particularly good effect on improving the wash fastness and rub fastness of the dyes obtained in the process.

[0224] In a further, particularly preferred embodiment, a method is characterized in that the composition (b) contains ammonia as a sealing reagent (b1).

[0225] Good results were also obtained when the composition (b) contained at least one C 2 -C 6 -alkanolamine as a sealing reagent (b1).

[0226] The alkanolamines that can be used in composition (b) can, for example, be selected from the group of primary amines with a C2-C6 alkyl backbone bearing at least one hydroxyl group. Preferred alkanolamines are selected from the group consisting of 2-aminoethanol-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol, and 2-amino-2-methylpropan-1,3-diol.

[0227] In a further preferred embodiment, a method according to the invention is characterized in that the composition (b) contains as a sealing reagent (b1) at least one alkalizing agent from the group of alkanolamines, which is preferably selected from the group consisting of 2-aminoethanol-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol and 2-amino-2-methylpropan-1,3-diol.

[0228] Good results were also obtained when the composition (b) contained at least one basic amino acid as a sealing reagent (b1).

[0229] For the purposes of this invention, an amino acid is defined as an organic compound whose structure contains at least one protonable amino group and at least one -COOH or -SO3H group. Preferred amino acids are aminocarboxylic acids, in particular α-(alpha)-aminocarboxylic acids and ω-aminocarboxylic acids, with α-aminocarboxylic acids being particularly preferred.

[0230] According to the invention, basic amino acids are understood to be those amino acids which have an isoelectric point pl of greater than 7.0.

[0231] Basic α-aminocarboxylic acids contain at least one asymmetric carbon atom. Within the scope of the present invention, both possible enantiomers can be used as specific compounds or mixtures thereof, particularly as racemates. However, it is especially advantageous to use the naturally occurring isomeric form, usually in the L-configuration.

[0232] The basic amino acids are preferably selected from the group consisting of arginine, lysine, ornithine, and histidine, particularly preferably from arginine and lysine. In a further particularly preferred embodiment, the process is therefore characterized in that the sealing reagent (b1) is an alkalizing agent comprising a basic amino acid from the group consisting of arginine, lysine, ornithine, and / or histidine.

[0233] In a further preferred embodiment, the method is characterized in that the agent (b) contains as a sealing reagent (b1) at least one alkalizing agent from the group of basic amino acids, which is preferably selected from the group consisting of arginine, lysine, ornithine and histidine.

[0234] Good results were also obtained when the agent (b) contained at least one alkali metal hydroxide as a sealing reagent (b1). Sodium hydroxide and potassium hydroxide, for example, are suitable alkali metal hydroxides.

[0235] Good results were also obtained when composition (b) contained an alkalizing agent comprising at least one alkaline earth metal hydroxide as the sealing reagent (b1). Suitable alkaline earth metal hydroxides include, for example, magnesium hydroxide, calcium hydroxide, and barium hydroxide.

[0236] Good results were also obtained when the agent (b) contained at least one alkali metal silicate and / or alkali metal metasilicate as a sealing reagent (b1). Suitable alkali metal silicates include, for example, sodium silicate and potassium silicate.

[0237] Good results were also obtained when the agent (b) contained at least one alkali metal carbonate and / or alkaline earth metal carbonate as a sealing reagent (b1). Suitable alkali metal carbonates include, for example, sodium carbonate and potassium carbonate. Suitable alkaline earth metal carbonates include, for example, magnesium carbonate and calcium carbonate.

[0238] Within the group of the aforementioned sealing reagents (b1) in the form of an alkalizing agent, ammonia, C 2 -C 6 -alkanolamines, basic amino acids and alkali metal hydroxides have proven to be particularly suitable.

[0239] In a further particularly preferred embodiment, the method is characterized in that the agent (b) comprises, as a sealing reagent (b1), at least one alkalizing agent selected from the group consisting of ammonia, C2-C6 alkanolamines, basic amino acids and alkali metal hydroxides.

[0240] In a further particularly preferred embodiment, the method is characterized in that the agent (b) contains, as a sealing reagent (b1), at least one alkalizing agent selected from the group consisting of ammonia, 2-aminoethanol-1-ol, 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol, 2-amino-2-methylpropan-1,3-diol, arginine, lysine, ornithine, histidine, sodium hydroxide and potassium hydroxide.

[0241] The agent (b) contains the alkalizing agent as a sealing reagent (b1) in a cosmetic carrier, preferably in an aqueous cosmetic carrier.

[0242] In this context, it has proven preferable if the agent (b) contains 5.0 to 99.0 wt.%, preferably 15.0 to 97.0 wt.%, more preferably 25.0 to 97.0 wt.%, not further preferably 35.0 to 97.0 wt.% and most preferably 45.0 to 97.0 wt.% water, based on the total weight of the agent (b).

[0243] In a further embodiment, the method is characterized in that the agent (b) contains 5.0 to 99.0 wt.%, preferably 15.0 to 97.0 wt.%, more preferably 25.0 to 97.0 wt.%, not further preferably 35.0 to 97.0 wt.% and most preferably 45.0 to 97.0 wt.% water, based on the total weight of the agent (b).

[0244] The alkalizing agents contained in the agent (b) influence the pH value of the agent (b). It was found that certain alkaline pH values, in particular, have a beneficial effect on the dyeing performance achievable in the process and the fastness properties of the dyes.

[0245] For this reason, it is preferred that the agent (b), comprising an alkalizing agent as a sealing reagent (b1), has a pH value of 7.0 to 12.0, preferably 7.5 to 11.5, more preferably 8.0 to 11.0 and most preferably 8.5 to 9.5.

[0246] The pH value can be measured using the usual methods known from the state of the art, such as pH measurement using glass electrodes via single-rod measuring chains or via pH indicator paper.

[0247] In a further particularly preferred embodiment, the method is characterized in that the agent (b) contains an alkalizing agent as a sealing reagent (b1) and has a pH value of 7.0 to 12.0, preferably 7.5 to 11.5, more preferably 8.0 to 11.0 and most preferably 8.5 to 9.5.

[0248] The pH values ​​referred to in the present invention are pH values ​​measured at a temperature of 22°C.

[0249] In a further alternative embodiment, the sealing reagent (b1) contains an acidifying agent.

[0250] The acidifying agent is particularly preferred if it is selected from the group consisting of inorganic acids, organic acids and mixtures thereof.

[0251] Good results were obtained when the agent (b) contained at least one inorganic acid as a sealing reagent (b1). Suitable inorganic acids include, for example, phosphoric acid, sulfuric acid, and / or hydrochloric acid, with sulfuric acid being particularly preferred.

[0252] In a further preferred embodiment, the method is characterized in that the agent (b) contains as a sealing reagent (b1) at least one acidifying agent from the group of inorganic acids, which is preferably selected from the group consisting of phosphoric acid, sulfuric acid, hydrochloric acid and mixtures thereof.

[0253] In a further, even more preferred embodiment, the method is characterized in that the agent (b) contains sulfuric acid as a sealing reagent (b1).

[0254] Good results were also obtained when the agent (b) contains at least one organic acid as a sealing reagent (b1).The organic acid is preferably selected from the group consisting of formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, pivalic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, glyceric acid, glyoxylic acid, adipic acid, pimelic acid, cortic acid, azelaic acid, sebacic acid, propiolic acid, crotonic acid, isocrotonic acid, elaidic acid, maleic acid, fumaric acid, muconic acid, citraconic acid, mesaconic acid, camphoric acid, benzoic acid, o,m,p-phthalic acid, naphthoic acid, toluene acid, hydratropic acid, atropic acid, cinnamic acid, isonicotinic acid, nicotinic acid, bicarbamic acid, 4,4'-dicyano-6,6'-binicotinic acid, 8-carbamoyloctanoic acid, 1,2,4-pentanetricarboxylic acid, 2-pyrrolecarboxylic acid. 1,2,4,6,7-Naphthalenpentaacetic acid, malonaldehydic acid, 4-hydroxyphthalamic acid, 1-pyrazolecarboxylic acid, gallic acid or propanetricarboxylic acid, glycolic acid, gluconic acid, lactic acid, maleic acid, ascorbic acid, malic acid, tartaric acid, citric acid and mixtures thereof.

[0255] In a further preferred embodiment, the method is characterized in that the agent (b) contains, as a sealing reagent (b1), at least one acidifying agent from the group of organic acids, wherein the organic acid is preferably selected from the group consisting of formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, pivalic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, glyceric acid, glyoxylic acid, adipic acid, pimelic acid, corticic acid, azelaic acid, sebacic acid, propiolic acid, crotonic acid, isocrotonic acid, elaidic acid, maleic acid, fumaric acid, muconic acid, citraconic acid, mesaconic acid, camphoric acid, benzoic acid, o,m,p-phthalic acid, naphthoic acid, toluene acid, hydratropic acid, atropic acid, cinnamic acid, isonicotinic acid, nicotinic acid, and bicarbamic acid. 4,4'-Dicyano-6,6'-binicotinic acid, 8-Carbamoyloctanoic acid, 1,2,4-Pentanetricarboxylic acid, 2-Pyrrolecarboxylic acid, 1,2,4,6,7-Naphthalenpentaacetic acid,Malonaldehydic acid, 4-hydroxyphthalamic acid, 1-pyrazolecarboxylic acid, gallic acid or propanetricarboxylic acid, glycolic acid, gluconic acid, lactic acid, maleic acid, ascorbic acid, malic acid, tartaric acid, citric acid and mixtures thereof.

[0256] In a further, even more preferred embodiment, the method is characterized in that the agent (b) contains acetic acid as a sealing reagent (b1).

[0257] Suitable acidifying agents also include methanesulfonic acid and / or 1-hydroxyethane-1,1-diphosphonic acid.

[0258] Within the group of the aforementioned sealing reagents (b1) in the form of an acidifying agent, sulfuric acid and / or acetic acid have proven to be particularly suitable.

[0259] In a further particularly preferred embodiment, the method is characterized in that the agent (b) as a sealing reagent (b1) comprises at least one acidifying agent selected from the group consisting of sulfuric acid, acetic acid and mixtures thereof.

[0260] The agent (b) contains the acidifying agent as a sealing reagent (b1) in a cosmetic carrier, preferably in an aqueous cosmetic carrier.

[0261] The acidifying agents contained in the agent (b) influence the pH value of the agent (b). It was found that acidic pH values ​​also have a beneficial effect on the dyeing performance achievable in the process and the fastness properties of the dyes.

[0262] For this reason, it is preferred that the agent (b), comprising an acidifying agent as a sealing reagent (b1), has a pH value of 2.0 to 6.5, preferably of 3.0 to 6.0, more preferably of 4.0 to 6.0 and most preferably of 4.5 to 5.5.

[0263] The pH value can be measured using the usual methods known from the state of the art, such as pH measurement using glass electrodes via single-rod measuring chains or via pH indicator paper.

[0264] In a further particularly preferred embodiment, the method is characterized in that the agent (b) contains an acidifying agent as a sealing reagent (b1) and has a pH value of 2.0 to 6.5, preferably 3.0 to 6.0, more preferably 4.0 to 6.0 and most preferably 4.5 to 5.5.

[0265] The pH values ​​referred to in the present invention are pH values ​​measured at a temperature of 22°C. Means (c)

[0266] The agent (c) can be described as a post-treatment agent. Agent (c) is characterized by the presence of a hydroxyamine-functionalized silicone polymer (c1).

[0267] Hydroxyamine-functionalized silicone polymers exhibit good conditioning properties with respect to keratinous materials and make them hydrophobic. In the case of human hair, the use of a hydroxyamine-functionalized silicone polymer leads to less hair breakage and easier styling.

[0268] Surprisingly, it has been shown that the hydroxyamine-functionalized silicone polymer also exhibits stabilizing properties with respect to the film(s) formed on the keratinous material, thus enabling particularly stable and intense colorations to be obtained.

[0269] A hydroxyamine-functionalized silicone polymer is a silicone polymer that includes hydroxy groups and amine groups.

[0270] A hydroxyamine-functionalized silicone polymer is specifically a silicone polymer in which some of the attached groups along the backbone include amine groups and hydroxy groups.

[0271] According to a preferred embodiment of the method, the agent (c) comprises, as a hydroxyamine-functionalized silicone polymer (c1), a copolymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer".

[0272] One such hydroxyamine-functionalized silicone polymer (c1) is available, for example, under the name HydroxySHIELD Polymer from Dow Inc.

[0273] The composition (c) contains the at least one hydroxyamine-functionalized silicone polymer in a preferred amount of 0.5 to 5 wt.%, more preferably of 0.75 to 4 wt.% and particularly preferably of 1 to 2.5 wt.%, wherein the amounts refer to the total weight of the composition (c).

[0274] According to a particularly preferred embodiment of the process, the agent (c) comprises a copolymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer" as a hydroxyamine-functionalized silicone polymer, wherein the hydroxyamine-functionalized silicone polymer is contained in an amount of 0.5 to 5 wt.%, more preferably 0.75 to 4 wt.% and particularly preferably 1 to 2.5 wt.%, in each case based on the total weight of the agent (c).

[0275] According to a particularly preferred embodiment of the process, the agent (c) comprises, as a hydroxyamine-functionalized silicone polymer, a copolymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer", wherein the copolymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer" is contained in an amount of 0.5 to 5 wt.%, more preferably 0.75 to 4 wt.% and particularly preferably 1 to 2.5 wt.%, in each case based on the total weight of the agent (c). Other ingredients in products (a), (b) and (c)

[0276] The previously described agents (a), (b) and (c) may further contain one or more optional ingredients. However, it is essential to the invention that at least one of the agents (a) and (b) further contains at least one coloring compound from the group of pigments and / or direct dyes.

[0277] It may be preferred that the agent (a) contains, in addition to the at least one organic silicon compound from the group of silanes with one, two or three silicon atoms (a1), at least one colouring compound selected from the group consisting of pigments and / or direct dyes.

[0278] Alternatively, it may be preferred that the agent (b) contains, in addition to the sealing reagent (b1), at least one colouring compound selected from the group of pigments.

[0279] In a further preferred embodiment of the method, the agent (a) and the agent (b) each contain at least one coloring compound selected from the group of pigments.

[0280] Regardless of the means (a) and / or (b), the use of pigments has proven to be particularly advantageous in this context.

[0281] In a further particularly preferred embodiment, a method is characterized in that the agent (a) and / or the agent (b) further contains at least one coloring compound from the group of pigments.

[0282] For the purposes of the present invention, pigments are understood to be coloring compounds which have a solubility in water at 25 °C of less than 0.5 g / L, preferably less than 0.1 g / L, and even more preferably less than 0.05 g / L. The water solubility can be determined, for example, by the method described below: 0.5 g of the pigment is weighed into a beaker. A magnetic stir bar is added. Then one liter of distilled water is added. This mixture is heated to 25 °C for one hour while stirring on a magnetic stirrer. If undissolved components of the pigment are still visible in the mixture after this period, the solubility of the pigment is below 0.5 g / L. If the pigment-water mixture cannot be visually assessed due to the high intensity of the pigment, which may be finely dispersed, the mixture is filtered.If a proportion of undissolved pigments remains on the filter paper, the solubility of the pigment is below 0.5 g / L.

[0283] Suitable pigments can be of inorganic and / or organic origin.

[0284] In a preferred embodiment, a method is characterized in that the agent (a) and / or the agent (b) further contains at least one coloring compound from the group of inorganic and / or organic pigments.

[0285] Preferred pigments are selected from synthetic or natural inorganic pigments. Inorganic pigments of natural origin can be produced, for example, from chalk, ochre, umber, green earth, burnt sienna, or graphite. Furthermore, black pigments such as iron oxide black, colored pigments such as ultramarine or iron oxide red, as well as fluorescent or phosphorescent pigments can be used as inorganic pigments.

[0286] Particularly suitable are colored metal oxides, hydroxides and oxide hydrates, mixed-phase pigments, sulfur-containing silicates, silicates, metal sulfides, complex metal cyanides, metal sulfates, chromates and / or molybdates. Especially preferred pigments are black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and brown iron oxide (CI 77491), manganese violet (CI 77742), ultramarine (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), iron blue (ferric ferrocyanide, CI 77S10) and / or carmine (cochineal).

[0287] Colored pearlescent pigments are also particularly favored. These are typically mica- and / or micaceous and can be coated with one or more metal oxides. Mica belongs to the layered silicates. The most important representatives of these silicates are muscovite, phlogopite, paragonite, biotite, lepidolite, and margarite. To produce pearlescent pigments in combination with metal oxides, the mica, predominantly muscovite or phlogopite, is coated with a metal oxide.

[0288] Accordingly, a preferred method is characterized in that the agent (a) and / or the agent (b) further contains at least one coloring compound from the group of pigments selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and / or from colored pigments based on natural or synthetic mica, which are coated with at least one metal oxide and / or one metal oxychloride.

[0289] A particularly suitable pigment based on synthetic mica is, for example, Timiron® SynWhite Satin from Merck.

[0290] In a further preferred embodiment, the method is characterized in that the agent (a) and / or the agent (b) contains at least one coloring compound from the group of pigments selected from pigments based on natural or synthetic mica, coated with one or more metal oxides from the group consisting of titanium dioxide (CI 77891), black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and / or brown iron oxide (CI 77491, CI 77499), manganese violet (CI 77742), ultramarine (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), chromium oxide (CI 77288) and / or iron blue (ferric ferrocyanide, CI 77510).

[0291] In a preferred embodiment, the agent (a) is characterized in that it contains at least one coloring compound from the group of inorganic pigments selected from the group consisting of black iron oxide (CI 77499), yellow iron oxide (CI 77492), red iron oxide (CI 77491) and mixtures thereof.

[0292] Yellow iron oxide (or iron oxide yellow) is the name for FeO(OH), listed in the Colour Index under CI Pigment Yellow 42.

[0293] Red iron oxide (or iron oxide red) is the name for Fe₂O₃, listed in the Colour Index under CI Pigment Red 101. Depending on the particle size, red iron oxide pigments can range from very yellow-toned (small particle size) to very bluish-toned (coarse particles).

[0294] Black iron oxide (or iron oxide black) is listed in the Colour Index under CI Pigment Black 11. Iron oxide black is ferromagnetic. Its chemical formula is often given as Fe₃O₄, but it is actually a mixed crystal of Fe₂O₃ and FeO with an inverse spinel structure. Other black pigments are obtained by doping with chromium, copper, or manganese.

[0295] Brown black iron oxide (or iron oxide brown) usually does not refer to a defined pigment, but rather a mixture of yellow, red and / or black iron oxide.

[0296] Iron oxide pigments typically have particle diameters in the range of 2,000 to 4,000 nm. For some applications, particularly in cosmetics, it can be advantageous to use iron oxide pigments with significantly smaller particle diameters. For example, hair dyes using iron oxide pigments with a particle diameter in the range of 100 to 1,000 nm, preferably 150 to 700 nm, exhibit better durability and gray coverage.

[0297] Accordingly, a means (a) is preferred which further comprises a colouring compound from the group of pigments and / or direct dyes, wherein the colouring compound comprises a pigment from the group of iron oxide pigments.

[0298] Even more preferred is an agent (a) which further comprises a coloring compound from the group of pigments and / or direct dyes, wherein the coloring compound comprises a pigment from the group of iron oxide pigments and wherein the iron oxide pigment has a particle diameter in the range of 100 to 1,000 nm, more preferably 150 nm to 700 nm.

[0299] Examples of particularly suitable pigments are available commercially under the trade names Rona ®< , Colorona ®< , Xirona ®< , Dichrona ®< and Timiron ®< from Merck, Ariabel ®< and Unipure ®< from Sensient, Prestige ®< or SynCrystal from Eckart Cosmetic Colors, Flamenco ®< , Cellini ®< , Cloisonné ®< , Duocrome ®< , Gemtone ®< , Timica ®< , MultiReflections, Chione from BASF SE and Sunshine ®< from Sunstar.

[0300] Particularly favored pigments with the trade name Colorona ® include, for example: Colorona Copper, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Copper Fine, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Passion Orange, Merck, Mica, CI 77491 (Iron Oxides), Alumina Colorona Patina Silver, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona RY, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 75470 (CARMINE) Colorona Oriental Beige, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Dark Blue, Merck, MICA, TITANIUM DIOXIDE, FERRIC FERROCYANIDE Colorona Chameleon, Merck, CI 77491 (IRON OXIDES), MICA Colorona Aborigine Amber, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona Blackstar Blue, Merck, CI 77499 (IRON OXIDES), MICA Colorona Patagonian Purple, Merck, MICA, CI 77491 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE), CI 77510 (FERRIC FERROCYANIDE) Colorona Red Brown, Merck, MICA, CI 77491 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona Russet, Merck, CI 77491 (TITANIUM DIOXIDE), MICA,CI 77891 (IRON OXIDES) Colorona Imperial Red, Merck, MICA, TITANIUM DIOXIDE (CI 77891), D&C RED NO. 30 (CI 73360) Colorona Majestic Green, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 77288 (CHROMIUM OXIDE GREENS) Colorona Light Blue, Merck, MICA, TITANIUM DIOXIDE (CI 77891), FERRIC FERROCYANIDE (CI 77510) Colorona Red Gold, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Gold Plus MP 25, Merck, MICA, TITANIUM DIOXIDE (CI 77891), IRON OXIDES (CI 77491) Colorona Carmine Red, Merck, MICA, TITANIUM DIOXIDE, CARMINE Colorona Blackstar Green, Merck, MICA, CI 77499 (IRON OXIDES) Colorona Bordeaux, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Bronze, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Bronze Fine, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Fine Gold MP 20, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Sienna Fine, Merck, CI 77491 (IRON OXIDES), MICA Colorona Sienna, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Precious Gold,Merck, Mica, CI 77891 (Titanium dioxide), Silica, CI 77491(Iron oxides), Tin oxide Colorona Sun Gold Sparkle MP 29, Merck, MICA, TITANIUM DIOXIDE, IRON OXIDES, MICA, CI 77891, CI 77491 (EU) Colorona Mica Black, Merck, CI 77499 (Iron oxides), Mica, CI 77891 (Titanium dioxide) Colorona Bright Gold, Merck, Mica, CI 77891 (Titanium dioxide), CI 77491(Iron oxides) Colorona Blackstar Gold, Merck, MICA, CI 77499 (IRON OXIDES) Colorona ®< SynCopper, Merck, Synthetic Fluorphlogopite (and) Iron Oxides Colorona ®< SynBronze, Merck, Synthetic Fluorphlogopite (and) Iron Oxides ,

[0301] Weiterhin besonders bevorzugte Pigmente mit der Handelsbezeichnung Xirona ®< sind beispielsweise: Xirona ®< Golden Sky, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona ®< Caribbean Blue, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, Tin Oxide 77891 (Titanium Dioxide), Tin Oxide Xirona ®< Le Rouge, Merck, Iron Oxides (and) Silica

[0302] Furthermore, particularly preferred pigments with the trade name Unipure ®< are, for example: Unipure Red LC 381 EM, Sensient CI 77491 (Iron Oxides), Silica Unipure Black LC 989 EM, Sensient, CI 77499 (Iron Oxides), Silica Unipure Yellow LC 182 EM, Sensient, CI 77492 (Iron Oxides), Silica

[0303] Other particularly favored pigments with the trade name Flamenco ® include, for example: Flamenco ®< Summit Turquoise T30D, BASF, Titanium Dioxide (and) Mica Flamenco ®< Super Violet 530Z, BASF, Mica (and) Titanium Dioxide

[0304] In a further embodiment, the agent (a) and / or agent (b) used in the process may also contain one or more color-imparting compounds from the group of organic pigments.

[0305] The organic pigments are insoluble organic dyes or lakes, which may be selected, for example, from the group of nitroso, nitro-azo, xanthene, anthraquinone, isoindolinone, isoindolin, quinacridone, perinone, perylene, diketopyrrolopyorrole, indigo, thioindido, dioxazine, and / or triarylmethane compounds.

[0306] Particularly suitable organic pigments include, for example, carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the Color Index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the Color Index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the Color Index numbers CI 61565, CI 61570, CI 74260, orange pigments with the Color Index numbers CI 11725, CI 15510, CI 45370, CI 71105, and red pigments with the Color Index Numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470.

[0307] In a further particularly preferred embodiment, the method is characterized in that the agent (a) and / or the agent (b) contains at least one coloring compound from the group of organic pigments selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, and orange pigments with the color index Numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the Color Index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915, CI 75470 and mixtures thereof.。

[0308] The organic pigment can also be a paint lake. For the purposes of the invention, the term "paint lake" refers to particles comprising a layer of absorbed dyes, wherein the particle-dye unit is insoluble under the aforementioned conditions. The particles can be, for example, inorganic substrates such as aluminum, silica, calcium borosilicate, calcium aluminum borosilicate, or even aluminum.

[0309] For example, alizarin lacquer can be used as a colored lacquer.

[0310] In a further embodiment of the method, the agent (a) and / or the agent (b) may also contain one or more coloring compounds from the group of organic pigments.

[0311] In a further particularly preferred embodiment, a method is characterized in that the agent (a) and / or the agent (b) contains at least one coloring compound from the group of organic pigments selected from the group consisting of carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the color index numbers CI 61565, CI 61570, CI 74260, orange pigments with the color index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the color index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and / or CI 75470.

[0312] In particular, an agent (a) is preferred which further comprises a colouring compound from the group of pigments and / or direct dyes, wherein the colouring compound comprises a pigment from the group of organic pigments.

[0313] Even more preferred is an agent (a) which further comprises a coloring compound from the group of pigments and / or direct dyes, wherein the coloring compound comprises at least one pigment from the group of organic pigments and wherein the organic pigment has a particle diameter in the range of 100 to 1,000 nm, more preferably 150 nm to 700 nm.

[0314] Inorganic and / or organic pigments modified with a polymer are also suitable coloring compounds from the pigment group. Polymer modification can, for example, increase the affinity of the pigments for the respective material of at least one layer.

[0315] In the compound (a) and / or the compound (b), so-called metallic effect pigments can also be used as a coloring compound.

[0316] The metallic effect pigments can, in particular, include pigments based on a lamellar substrate platelet, pigments based on lenticular substrate platelets, and / or pigments based on substrate platelets comprising vacuum metallized pigments (VMP). In these metallic effect pigments, the substrate platelets comprise a metal, preferably aluminum, or an alloy. Metal substrate platelet-based metallic effect pigments preferably have a coating that acts, among other things, as a protective layer.

[0317] Suitable metallic effect pigments include, for example, the pigments Alegrace ®< Marvelous, Alegrace ©< Gorgeous or Alegrace ®< Aurous from Schlenk Metallic Pigments.

[0318] Also suitable for metallic effect pigments are the aluminum-based pigments of the SILVERDREAM series and the VISIONAIRE series pigments from Eckart, which are based on aluminum or copper / zinc-containing metal alloys.

[0319] In a further preferred embodiment, the method is characterized in that the agent (a) - based on the total weight of the agent (a) - further contains one or more coloring compound(s) in the form of pigments in a total amount of 0.01 to 10 wt.%, preferably 0.1 to 8 wt.%, more preferably 0.2 to 6 wt.% and most preferably 0.5 to 4.5 wt.%.

[0320] In a further, also preferred embodiment, the method is characterized in that the agent (b) - based on the total weight of the agent (b) - furthermore contains one or more coloring compound(s) in the form of pigments in a total amount of 0.01 to 10 wt.%, preferably 0.1 to 8 wt.%, more preferably 0.2 to 6 wt.% and most preferably 0.5 to 4.5 wt.%.

[0321] The coloring agent(s) used in the process (a) and / or (b) may also contain one or more direct dyes. Direct dyes are dyes that adhere directly to the hair and do not require an oxidative process to develop the color. Typical direct dyes are nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, triarylmethane dyes, or indophenols.

[0322] The direct-acting dyes according to the present invention have a solubility in water (760 mmHg) at 25 °C of more than 0.5 g / L and are therefore not to be considered pigments. Preferably, the direct-acting dyes according to the present invention have a solubility in water (760 mmHg) at 25 °C of more than 1 g / L.

[0323] Direct-drawing dyes can be divided into anionic, cationic, and nonionic direct-drawing dyes.

[0324] In a further preferred embodiment, the method is characterized in that the agent (a) and / or the agent (b) further contains at least one anionic, cationic and / or nonionic direct dye as a coloring compound.

[0325] In a further preferred embodiment, the method is characterized in that the agent (a) and / or the agent (b) further contains at least one coloring compound from the group of anionic, nonionic, and / or cationic direct dyes.

[0326] Suitable cationic direct dyes are, for example, Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14, Basic Yellow 57, Basic Red 76, Basic Blue 16, Basic Blue 347 (Cationic Blue 347 / Dystar), HC Blue No. 16, Basic Blue 99, Basic Brown 16, Basic Brown 17, Basic Yellow 57, Basic Yellow 87, Basic Orange 31, Basic Red 51 Basic Red 76

[0327] Nonionic direct-drawing dyes can include, for example, nonionic nitro and quinone dyes and neutral azo dyes. Suitable nonionic direct-drawing dyes are those known by their international names.Handelsnamen 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 10, HC Red 11, HC Red 13, HC Red BN, HC Blue 2, HC Blue 11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9 bekannten Verbindungen, sowie 1,4-Diamino-2-nitrobenzol, 2-Amino-4-nitrophenol, 1,4-Bis-(2-hydroxyethyl)-amino-2-nitrobenzol, 3-Nitro-4-(2-hydroxyethyl)-aminophenol, 2-(2-Hydroxyethyl)amino-4,6-dinitrophenol, 4-[(2-Hydroxyethyl)amino]-3-nitro-1-methylbenzol, 1-Amino-4-(2-hydroxyethyl)-amino-5-chlor-2-nitrobenzol, 4-Amino-3-nitrophenol, 1-(2'-Ureidoethyl)amino-4-nitrobenzol, 2-[(4-Amino-2-nitrophenyl)amino]-benzoesäure, 6-Nitro-1,2,3,4-tetrahydrochinoxalin, 2-Hydroxy-1,4-naphthochinon, Pikraminsäure und deren Salze, 2-Amino-6-chloro-4-nitrophenol, 4-Ethylamino-3-nitrobenzoesäure und 2-Chlor-6-ethylamino-4-nitrophenol.

[0328] In the course of the work leading to this invention, it has been found that, in particular, with agents (a) and / or (b) containing at least one anionic direct dye, colorations with particularly high color intensity can be produced.

[0329] In a particularly preferred embodiment, the method is therefore characterized in that the agent (a) and / or the agent (b) further contains at least one anionic direct dye as a coloring compound.

[0330] Anionic direct-drawing dyes are also known as acid dyes. Acid dyes are defined as direct-drawing dyes that possess at least one carboxylic acid group (-COOH) and / or one sulfonic acid group (-SO₃H). Depending on the pH, the protonated forms (-COOH, -SO₃H) of the carboxylic acid or sulfonic acid groups exist in equilibrium with their deprotonated forms (-COO⁻, -SO₃⁻). The proportion of protonated forms increases with decreasing pH. When direct-drawing dyes are used in the form of their salts, the carboxylic acid or sulfonic acid groups are in deprotonated form and are neutralized with corresponding stoichiometric equivalents of cations to maintain electroneutrality. Acid dyes can also be used in the form of their sodium salts and / or potassium salts.

[0331] The acid dyes according to the present invention have a solubility in water (760 mmHg) at 25 °C of more than 0.5 g / L and are therefore not to be considered pigments. Preferably, the acid dyes according to the present invention have a solubility in water (760 mmHg) at 25 °C of more than 1 g / L.

[0332] Alkaline earth salts (such as calcium and magnesium salts) and aluminum salts of acid dyes often have lower solubility than the corresponding alkali salts. If the solubility of these salts is below 0.5 g / L (25 °C, 760 mmHg), they do not fall under the definition of a direct-drawing dye.

[0333] A key characteristic of acid dyes is their ability to form anionic charges, with the carboxylic acid or sulfonic acid groups responsible for this typically being linked to various chromophoric systems. Suitable chromophoric systems can be found, for example, in the structures of nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinone dyes, triarylmethane dyes, xanthene dyes, rhodamine dyes, oxazine dyes, and / or indophenol dyes.

[0334] In one embodiment, a preferred method is thus a process for dyeing keratinous material, characterized in that the agent (a) and / or the agent (b) further contains at least one anionic direct dye as a coloring compound, which is selected from the group consisting of nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinone dyes, triarylmethane dyes, xanthene dyes, rhodamine dyes, oxazine dyes and / or indophenol dyes, wherein the dyes from the aforementioned group each have at least one carboxylic acid group (-COOH), one sodium carboxylate group (-COONa), one potassium carboxylate group (-COOK), one sulfonic acid group (-SO3H), one sodium sulfonate group (-SO3Na) and / or one potassium sulfonate group (-SO3K).

[0335] As particularly suitable acid dyes, one or more compounds can be selected from the following group, for example: Acid Yellow 1 (D&C Yellow 7, Citronin A, Ext. D&C Yellow No. 7, Japan Yellow 403, CI 10316, COLIPA n° B001), Acid Yellow 3 (COLIPA n°: C 54, D&C Yellow N° 10, Quinoline Yellow, E104, Food Yellow 13), Acid Yellow 9 (CI 13015), Acid Yellow 17 (CI 18965), Acid Yellow 23 (COLIPA n° C 29, Covacap Jaune W 1100 (LCW), Sicovit Tartrazine 85 E 102 (BASF), Tartrazine, Food Yellow 4, Japan Yellow 4, FD&C Yellow No. 5), Acid Yellow 36 (CI 13065), Acid Yellow 121 (CI 18690), Acid Orange 6 (CI 14270), Acid Orange 7 (2-Naphthol orange, Orange II, CI 15510, D&C Orange 4, COLIPA n° C015), Acid Orange 10 (CI 16230; Orange G sodium salt), Acid Orange 11 (CI 45370), Acid Orange 15 (CI 50120), Acid Orange 20 (CI 14600), Acid Orange 24 (BROWN 1;CI 20170;KATSU201;nosodiumsalt;Brown No.201;RESORCIN BROWN;ACID ORANGE 24;Japan Brown 201;D & C Brown No.1), Acid Red 14 (C.I.14720), Acid Red 18 (E124, Red 18; CI 16255), Acid Red 27 (E 123, CI 16185, C-Rot 46, Echtrot D, FD&C Red Nr.2, Food Red 9, Naphtholrot S), Acid Red 33 (Red 33, Fuchsia Red, D&C Red 33, CI 17200), Acid Red 35 (CI C.I.18065), Acid Red 51 (CI 45430, Pyrosin B, Tetraiodfluorescein, Eosin J, lodeosin), Acid Red 52 (CI 45100, Food Red 106, Solar Rhodamine B, Acid Rhodamine B, Red n° 106 Pontacyl Brilliant Pink), Acid Red 73 (CI CI 27290), Acid Red 87 (Eosin, CI 45380), Acid Red 92 (COLIPA n° C53, CI 45410), Acid Red 95 (CI 45425, Erythtosine,Simacid Erythrosine Y), Acid Red 184 (CI 15685), Acid Red 195, Acid Violet 43 (Jarocol Violet 43, Ext. D&C Violet n° 2, C.I. 60730, COLIPA n° C063), Acid Violet 49 (CI 42640), Acid Violet 50 (CI 50325), Acid Blue 1 (Patent Blue, CI 42045), Acid Blue 3 (Patent Blau V, CI 42051), Acid Blue 7 (CI 42080), Acid Blue 104 (CI 42735), Acid Blue 9 (E 133, Patentblau AE, Amidoblau AE, Erioglaucin A, CI 42090, C.I.Food Blue 2), Acid Blue 62 (CI 62045), Acid Blue 74 (E 132, CI 73015), Acid Blue 80 (CI 61585), Acid Green 3 (CI 42085, Foodgreen1), Acid Green 5 (CI 42095), Acid Green 9 (C.I.42100), Acid Green 22 (C.I.42170), Acid Green 25 (CI 61570, Japan Green 201, D&C Green No. 5), Acid Green 50 (Brillantsäuregrün BS, C.I. 44090, Acid Brilliant Green BS, E 142), Acid Black 1 (Black n° 401, Naphthalene Black 10B, Amido Black 10B, CI 20 470, COLIPA n° B15), Acid Black 52 (CI 15711), Food Yellow 8 (CI 14270), Food Blue 5, D&C Yellow 8, D&C Green 5, D&C Orange 10, D&C Orange 11, D&C Red 21, D&C Red 27, D&C Red 33, D&C Violet 2 und / oder D&C Brown 1.

[0336] The water solubility of anionic direct-acting dyes can be determined, for example, using the following method. Place 0.1 g of the anionic direct-acting dye into a beaker. Add a magnetic stir bar. Then add 100 ml of water. Heat this mixture to 25 °C on a magnetic stirrer while stirring. Stir for 60 minutes. Afterward, visually inspect the aqueous mixture. If undissolved dye remains, increase the amount of water—for example, in 10 ml increments. Continue adding water until the dye is completely dissolved. If the dye-water mixture cannot be visually assessed due to the high intensity of the dye, filter the mixture. If some undissolved dye remains on the filter paper, repeat the solubility test with a larger amount of water.If 0.1 g of the anionic direct-drawing dye dissolves in 100 ml of water at 25 °C, the solubility of the dye is 1 g / L.

[0337] Acid Yellow 1 is called 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic acid disodium salt and has a solubility in water of at least 40 g / L (25°C).

[0338] Acid Yellow 3 is a mixture of the sodium salts of mono- and disulfonic acids of 2-(2-quinolyl)-1H-indene-1,3(2H)-dione and has a water solubility of 20 g / L (25 °C).

[0339] Acid Yellow 9 is the disodium salt of 8-hydroxy-5,7-dinitro-2-naphthalenesulfonic acid; its water solubility is above 40 g / L (25 °C).

[0340] Acid Yellow 23 is the trisodium salt of 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-1H-pyrazole-3-carboxylic acid and is readily soluble in water at 25 °C.

[0341] Acid Orange 7 is the sodium salt of 4-[(2-Hydroxy-1-naphthyl)azo]benzenesulfonate. Its water solubility is greater than 7 g / L (25 °C).

[0342] Acid Red 18 is the trisodium salt of 7-hydroxy-8-[(E)-(4-sulfonato-1-naphthyl)-diazenyl)]-1,3-naphthalenedisulfonate and has a very high water solubility of more than 20 wt%. Acid Red 33 is the disodium salt of 5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulfonate; its water solubility is 2.5 g / L (25 °C).

[0343] Acid Red 92 is the disodium salt of 3,4,5,6-tetrachloro-2-(1,4,5,8-tetrabromo-6-hydroxy-3-oxoxanthen-9-yl)benzoic acid, whose water solubility is given as greater than 10 g / L (25 °C).

[0344] Acid Blue 9 is the disodium salt of 2-({4-[N-ethyl(3-sulfonatobenzyl]amino]phenyl}{4-[(N-ethyl(3-sulfonatobenzyl)imino]-2,5-cyclohexadien-1-ylidene}methyl)-benzenesulfonate and has a water solubility of more than 20 wt% (25 °C).

[0345] A particularly preferred method is therefore characterized in that the agent (a) and / or the agent (b) further comprises at least one coloring compound from the group of anionic direct dyes selected from the group consisting of Acid Yellow 1, Acid Yellow 3, Acid Yellow 9, Acid Yellow 17, Acid Yellow 23, Acid Yellow 36, Acid Yellow 121, Acid Orange 6, Acid Orange 7, Acid Orange 10, Acid Orange 11, Acid Orange 15, Acid Orange 20, Acid Orange 24, Acid Red 14, Acid Red, Acid Red 27, Acid Red 33, Acid Red 35, Acid Red 51, Acid Red 52, Acid Red 73, Acid Red 87, Acid Red 92, Acid Red 95, Acid Red 184, Acid Red 195, Acid Violet 43, Acid Violet 49, Acid Violet 50, Acid Blue 1, Acid Blue 3, Acid Blue 7, Acid Blue 104, Acid Blue 9, Acid Blue 62, Acid Blue 74, Acid Blue 80, Acid Green 3, Acid Green 5, Acid Green 9, Acid Green 22, Acid Green 25, Acid Green 50, Acid Black 1, Acid Black 52, Food Yellow 8, Food Blue 5, D&C Yellow 8, D&C Green 5, D&C Orange 10,D&C Orange 11, D&C Red 21, D&C Red 27, D&C Red 33, D&C Violet 2 and / or D&C Brown 1.,

[0346] The direct dye(s), in particular the anionic direct dyes, can be used in varying amounts in composition (a) and / or composition (b), depending on the desired color intensity. Particularly good results were obtained when composition (a) and / or composition (b) – based on its total weight – furthermore contains one or more direct dyes as the coloring compound in a total amount of 0.01 to 10 wt.%, preferably 0.1 to 8 wt.%, more preferably 0.2 to 6 wt.%, and most preferably 0.5 to 4.5 wt.%.

[0347] In a further preferred embodiment, the method is characterized in that the agent (a) and / or the agent - based on the total weight of the agent (a) and / or the agent (b) - further contains one or more direct dyes as a coloring compound in a total amount of 0.01 to 10 wt.%, preferably 0.1 to 8 wt.%, more preferably 0.2 to 6 wt.% and most preferably 0.5 to 4.5 wt.%.

[0348] The agents (a), (b) and / or (c) may additionally contain one or more surfactants. Surfactants are defined as surface-active substances. A distinction is made between anionic surfactants, consisting of a hydrophobic residue and a negatively charged hydrophilic head group; amphoteric surfactants, which carry both a negative and a compensating positive charge; cationic surfactants, which have a positively charged hydrophilic group in addition to a hydrophobic residue; and nonionic surfactants, which have no charges but strong dipole moments and are highly hydrated in aqueous solution.

[0349] Zwitterionic surfactants are surface-active compounds that contain at least one quaternary ammonium group and at least one -COO (-)< - or -SO 3 (-)< - group in their molecule. Particularly suitable zwitterionic surfactants include the so-called betaines, such as the N-alkyl-N,N-dimethylammonium glycinates (e.g., cocoalkyldimethylammonium glycinate), N-acylaminopropyl-N,N-dimethylammonium glycinates (e.g., cocoacylaminopropyl dimethylammonium glycinate), and 2-alkyl-3-carboxymethyl-3-hydroxyethyl-imidazolines, each with 8 to 18 carbon atoms in the alkyl or acyl group, as well as cocoacylaminoethylhydroxyethylcarboxymethyl glycinate. A preferred zwitterionic surfactant is the fatty acid amide derivative known under the INCI name cocamidopropyl betaine.

[0350] Ampholytic surfactants are defined as surface-active compounds that, in addition to a C8-C24 alkyl or acyl group in the molecule, contain at least one free amino group and at least one -COOH or -SO3H group and are capable of forming internal salts. Examples of suitable ampholytic surfactants include N-alkylglycines, N-alkylpropionic acids, N-alkylaminobutyric acids, N-alkyliminodipropionic acids, N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines, N-alkylsarcosines, 2-alkylaminopropionic acids, and alkylaminoacetic acids, each with approximately 8 to 24 carbon atoms in the alkyl group. Typical examples of amphoteric or zwitterionic surfactants are alkyl betaines, alkylamidobetaines, aminopropionates, aminoglycinates, imidazolinium betaines, and sulfobetaines.

[0351] Particularly preferred ampholytic surfactants are N-cocosalkylaminopropionate, cocosacylaminoethylaminopropionate and C 12 - C 18 -acylsarcosine.

[0352] The products may also contain at least one additional nonionic surfactant. Suitable nonionic surfactants include alkyl polyglycosides and alkylene oxide adsorption products to fatty alcohols and fatty acids, each containing 2 to 30 moles of ethylene oxide per mole of fatty alcohol or fatty acid. Preparations with good properties are also obtained when they contain fatty acid esters of ethoxylated glycerol as nonionic surfactants, which have been reacted with at least 2 moles of ethylene oxide.

[0353] It may be particularly preferred that the composition (a) further contains alkoxylated castor oil and / or sulfated castor oil. The castor oil may be at least partially hydrogenated.

[0354] The alkoxylated castor oil is preferably a castor oil alkoxylated with 20 to 80, more preferably 30 to 50, ethylene oxide groups, in particular a hydrogenated castor oil alkoxylated with 40 ethylene oxide groups (INCI: PEG-40 Hydrogenated Castor Oil).

[0355] According to a further preferred embodiment, the composition (c) contains hydrogenated castor oil alkoxylated with 40 ethylene oxide groups. According to yet another preferred embodiment, the composition (c) contains hydrogenated castor oil alkoxylated with 40 ethylene oxide groups in an amount of 0.05 to 2 wt.%, preferably 0.1 to 1 wt.%, more preferably 0.25 to 0.75 wt.%, based on the total weight of the composition (c).

[0356] It may also be particularly preferred that the product (a) further contains sulfated castor oil (INCI: Sulfated Castor Oil). The castor oil may be at least partially hydrogenated.

[0357] In a particularly preferred embodiment, the agent (c) further contains sulfated castor oil (INCI: Sulfated Castor Oil) in the form of Turkey red oil.

[0358] Turkey red oil, also known as tournant oil, is a mixture of castor oil, ricinoleic acid and its sulfuric acid ester, dihydroxystearic acid and its sulfuric acid ester, polyricinoleic acids, and ricinoleic anhydrides and lactones. Turkey red oil is obtained by reacting concentrated sulfuric acid with castor oil at room temperature, followed by neutralization of the reaction mixture with sodium hydroxide or ammonia.

[0359] According to a further preferred embodiment, the agent (a) contains sulfated castor oil (INCI: Sulfated Castor Oil) in an amount of 0.05 to 2 wt.%, preferably 0.1 to 1 wt.%, more preferably 0.25 to 0.75 wt.%, based on the total weight of the agent (c).

[0360] According to yet another preferred embodiment, the agent (a) contains Turkey red oil in an amount of 0.05 to 2 wt.%, preferably 0.1 to 1 wt.%, more preferably 0.25 to 0.75 wt.%, based on the total weight of the agent (c).

[0361] Furthermore, agents (a), (b) and / or (c) may additionally contain at least one cationic surfactant. Cationic surfactants are defined as surfactants, i.e., surface-active compounds, with one or more positive charges. Cationic surfactants contain exclusively positive charges. These surfactants typically consist of a hydrophobic part and a hydrophilic head group, with the hydrophobic part usually comprising a hydrocarbon backbone (e.g., consisting of one or two linear or branched alkyl chains), and the positive charge(s) being located in the hydrophilic head group. Examples of cationic surfactants are: quaternary ammonium compounds, which may carry one or two alkyl chains with a chain length of 8 to 28 C atoms as hydrophobic residues, esterquats, quaternary phosphonium salts, substituted with one or more alkyl chains with a chain length of 8 to 28 C atoms or tertiary sulfonium salts.

[0362] Furthermore, the cationic charge can also be in the form of an onium structure within a heterocyclic ring (e.g., an imidazolium ring or a pyridinium ring). In addition to the functional unit carrying the cationic charge, the cationic surfactant can also contain other uncharged functional groups, as is the case, for example, with esterquats.

[0363] Suitable cationic surfactants in the form of quaternary ammonium compounds include, for example, lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, cetyltrimethylammonium methosulfate, dicetyldimethylammonium chloride, tricetylmethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylbenzylammonium chloride, behenyltrimethylammonium chloride, behenyltrimethylammonium bromide or behenyltrimethylammonium methosulfate.

[0364] Suitable cationic surfactants in the form of esterquats include, for example, methyl-N-(2-hydroxyethyl)-N,N-di(talgacyloxyethyl)ammonium compounds, bis-(palmitoyloxyethyl)hydroxyethyl-methyl-ammonium compounds, methyl-N,N-bis(stearoyloxyethyl)-N-(2-hydroxyethyl)ammonium compounds, methyl-N,N-bis(cocoyloxyethyl)-N-(2-hydroxyethyl)ammonium compounds or N,N-dimethyl-N,N-di(talgacyloxyethyl)ammonium compounds.

[0365] The cationic surfactants are used in a total amount of 0.1 to 20 wt.%, preferably 0.5 to 15 wt.% and most preferably 1 to 10 wt.% - based on the total weight of the respective agent.

[0366] It may be particularly preferred that the agent (c) further contains a cationic surfactant.

[0367] Furthermore, agents (a) and / or (b) may also contain at least one anionic surfactant. Anionic surfactants are surface-active agents with exclusively anionic charges (neutralized by a corresponding countercation). Examples of anionic surfactants are fatty acids, alkyl sulfates, alkyl ether sulfates, and ether carboxylic acids with 12 to 20 carbon atoms in the alkyl group and up to 16 glycol ether groups in the molecule.

[0368] The anionic surfactants are used in a total amount of 0.1 to 45 wt.%, preferably 1 to 30 wt.% and most preferably 1 to 15 wt.% - based on the total weight of the respective agent.

[0369] The products may also contain other active ingredients, excipients, and additives, such as solvents, fatty components like C8-C30 fatty acid triglycerides, C8-C30 fatty acid monoglycerides, C8-C30 fatty acid diglycerides, and / or hydrocarbons; structuring agents like glucose, maleic acid, and lactic acid; hair-conditioning compounds like phospholipids, for example, lecithin and cephalins; perfume oils, dimethyl isosorbide, and cyclodextrins; fiber-improving agents, in particular mono-, di-, and oligosaccharides such as glucose, galactose, fructose, and lactose; colorants for coloring the product; anti-dandruff agents such as piroctone olamines, zinc omadine, and climbazole; amino acids and oligopeptides; Protein hydrolysates of animal and / or plant origin, as well as in the form of their fatty acid condensation products or, where applicable, anionically or cationically modified derivatives; vegetable oils;Sunscreens and UV blockers; active ingredients such as panthenol, pantothenic acid, pantolactone, allantoin, pyrrolidone carboxylic acids and their salts, and bisabolol; polyphenols, in particular hydroxycinnamic acids, 6,7-dihydroxycoumarins, hydroxybenzoic acids, catechins, tannins, leucoanthocyanidins, anthocyanidins, flavanones, flavones, and flavonols; ceramides or pseudoceramides; vitamins, provitamins, and vitamin precursors; plant extracts; fats and waxes such as fatty alcohols, beeswax, montan wax, and paraffins; swelling and penetrating agents such as glycerin, propylene glycol monoethyl ether, carbonates, hydrogen carbonates, guanidines, ureas, and primary, secondary, and tertiary phosphates; opacifying agents such as latex, styrene / PVP, and styrene / acrylamide copolymers; Pearlescent agents such as ethylene glycol mono- and distearate as well as PEG-3 distearate; and propellants such as propane-butane mixtures, N2O, dimethyl ether, CO2 and air.;

[0370] The selection of these additional substances will be made by a person skilled in the art according to the desired properties of the composition. Regarding further optional components and the quantities of these components used, explicit reference is made to the relevant handbooks known to those skilled in the art. The additional active ingredients and excipients are preferably used in the preparations according to the invention in quantities of 0.0001 to 25 wt.%, and in particular 0.0005 to 15 wt.%, based on the total weight of the respective composition.

[0371] According to a particularly preferred embodiment of the method, the agent (c) may further contain 2-butyloctanol. The presence of 2-butyloctanol may advantageously affect the compatibility of the hydroxyamine-functionalized polysilicone (c1) with the other ingredients of the agent (c) and / or the physical stability of the agent (c). Methods for dyeing keratinous materials

[0372] In the process according to the invention, the agents (a), (b) and (c) are applied to the keratinous materials, in particular to human hair. Thus, agents (a), (b) and (c) are the ready-to-use agents. Agents (a), (b) and (c) are different from each other.

[0373] The agents (a), (b) and (c) can in principle be applied simultaneously or successively, with successive application being preferred.

[0374] The best results were obtained when, in a first step, agent (a) was applied to the keratinous materials, in a second step agent (b) was applied, and then in a subsequent step agent (c) was applied.

[0375] A method for treating keratinous material, in particular for dyeing keratinous material, especially human hair, is therefore particularly preferred, comprising the following steps in the specified order: • In a first step, application of an agent (a) to the keratinous material, wherein the agent (a) contains: (a1) at least one organic silicon compound from the group of silanes with one, two or three silicon atoms, and (a2) at least one coloring compound from the group of pigments and / or direct dyes, • In a second step, application of an agent (b) to the keratinous material, wherein the agent (b) contains: (b1) at least one sealing reagent, and • In a third step, application of an agent (c) to the keratinous material, wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer.

[0376] In order to give the dyed keratinous material a high wash-out resistance over a longer period of time, the agents (a), (b) and (c) are also particularly preferably applied within one and the same dyeing process, which means that there is a period of at most a few hours between the application of agents (a) and (c).

[0377] In a further preferred embodiment, the method is characterized in that first the agent (a) is applied, then the agent (b) is applied and subsequently the agent (c) is applied, wherein the period between the application of the agents (a) and (c) is a maximum of 24 hours, preferably a maximum of 12 hours and particularly preferably a maximum of 6 hours.

[0378] A characteristic feature of the agent (a) is its content of at least one reactive organic silicon compound (a1). The reactive organic silicon compound(s) (a1) undergo an oligomerization or polymerization reaction and thereby functionalize the hair surface upon contact. In this way, a first film is formed. If the agent (a) contains coloring compounds, these are incorporated into the film, thus coloring it. In the second step of the process, a second agent (b) is applied to the hair, the sealing reagent contained in agent (b) sealing the first, possibly colored, film. If agent (b) contains film-forming polymers, these polymers interact with the first film during application of agent (b) and are thereby bound to the keratinous materials.By applying the post-treatment agent (c), the properties of the dyeing can be significantly improved, especially with regard to the fastness properties and, in particular, the wash fastness (= color retention).

[0379] In a further embodiment, a method comprising the following steps in the specified order is particularly preferred. (1) Applying the agent (a) to the keratinous material, (2) allowing the agent (a) to act for a period of 10 seconds to 10 minutes, preferably 10 seconds to 5 minutes, (3) optionally rinsing the keratinous material with water, (4) applying the agent (b) to the keratinous material, (5) allowing the agent (b) to act for a period of 30 seconds to 30 minutes, preferably 30 seconds to 10 minutes, (6) rinsing the keratinous material with water, (7) applying the agent (c) to the keratinous material, (8) allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (9) rinsing the keratinous material with water.

[0380] According to the invention, the rinsing of the keratinous material with water in steps (3), (6) and (9) of the process means that only water is used for the rinsing process, without the use of any other means other than those (a), (b) and (c).

[0381] In step (1) the agent (a) is first applied to the keratinous materials, especially the human hair.

[0382] After application, the agent (a) is allowed to act on the keratinous materials. In this context, exposure times of 10 seconds to 10 minutes, preferably 20 seconds to 5 minutes, and most preferably 30 seconds to 2 minutes on the hair have proven to be particularly advantageous.

[0383] In a preferred embodiment of the method according to the invention, the agent (a) can now be rinsed off the keratinous materials before the agent (b) is applied to the hair in the subsequent step.

[0384] Dyes with equally good wash fastness were obtained when the agent (b) was applied to the keratinous materials which were still exposed to the agent (a).

[0385] In step (4), the agent (b) is applied to the keratinous materials. After application, the agent (b) is left to act on the hair.

[0386] The process allows for the production of colorations with particularly good intensity and wash fastness, even with a short exposure time of the agent (b). Exposure times of 10 seconds to 10 minutes, preferably 20 seconds to 5 minutes, and most preferably 30 seconds to 3 minutes on the hair have proven to be particularly advantageous.

[0387] In step (6) the agent (b) (and any remaining agent (a)) is rinsed out of the keratinous material with water.

[0388] In a subsequent treatment step, agent (c) is applied to the keratinous materials. Agent (c) is also allowed to act on the keratinous materials and then rinsed off with water.

[0389] The positive effects achieved by the product (c) are particularly long-lasting if the product (c) is used repeatedly - for example, as part of regular hair washing.

[0390] In a further embodiment, a method comprising the following steps in the specified order is particularly preferred. (1) Applying the agent (a) to the keratinous material, (2) allowing the agent (a) to act for a period of 10 seconds to 10 minutes, preferably 10 seconds to 5 minutes, (3) optionally rinsing the keratinous material with water, (4) applying the agent (b) to the keratinous material, (5) allowing the agent (b) to act for a period of 30 seconds to 30 minutes, preferably 30 seconds to 10 minutes, (6) rinsing the keratinous material with water, (7) applying the agent (c) to the keratinous material, (8) allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (9) rinsing the keratinous material with water. the sequence of steps (7), (8) and (9) is performed at least twice.

[0391] In this embodiment, the sequence of steps (1) to (6) preferably takes place within 24 hours.

[0392] In a further embodiment, a method comprising the following steps in the specified order is particularly preferred. (1) Applying the agent (a) to the keratinous material, (2) allowing the agent (a) to act for a period of 10 seconds to 10 minutes, preferably 10 seconds to 5 minutes, (3) optionally rinsing the keratinous material with water, (4) applying the agent (b) to the keratinous material, (5) allowing the agent (b) to act for a period of 30 seconds to 30 minutes, preferably 30 seconds to 10 minutes, (6) rinsing the keratinous material with water, (7) applying the agent (c) to the keratinous material, (8) allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (9) rinsing the keratinous material with water, (10) applying the agent (c) to the keratinous material, (11) allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably from 30 seconds to 5 minutes,and (12) rinsing the keratinous material with water.

[0393] In this embodiment, steps (1) to (9) are carried out within a few hours. A period of a few days may elapse between the execution of steps (9) and (10) to (12).

[0394] The agent (a) contains the organic silicon compound(s), a class of highly reactive compounds which can undergo hydrolysis, oligomerization, and / or polymerization upon application. Due to their high reactivity, these organic silicon compounds form a film on the keratinous material.

[0395] To avoid premature oligomerization or polymerization, it is of significant advantage to the user to prepare the ready-to-use agent (a) only shortly before application.

[0396] In a further embodiment, a preferred method comprises the following steps in the specified order. (1) Preparation of an agent (a) by mixing a first agent (a') and a second agent (a"), wherein ∘ the first agent (a') contains at least one organic silicon compound (a1) from the group of silanes with one, two or three silicon atoms, and ∘ the second agent (a") contains at least one coloring compound (a2) from the group of pigments and / or direct dyes, (2) application of the agent (a) to the keratinous material, (3) allowing the agent (a) to act for a period of 10 seconds to 10 minutes, preferably from 10 seconds to 5 minutes, (4) optionally rinsing the keratinous material with water, (5) application of the agent (b) to the keratinous material, (6) allowing the agent (b) to act for a period of 30 seconds to 30 minutes, preferably from 30 seconds to 10 minutes, (7) optionally rinsing the keratinous material with water, (8) application of the agent (c) to the keratinous material,(9) Allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (10) rinsing the keratinous material with water, (11) applying the agent (c) to the keratinous material, (12) allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (13) rinsing the keratinous material with water.

[0397] In order to provide a formulation that is as stable in storage as possible, the agent (a') itself is preferably formulated with low water content or is anhydrous.

[0398] In a preferred embodiment, a multi-component packaging unit (kit-of-parts) is characterized in that the agent (a') - based on the total weight of the agent (a') - contains a water content of 0.001 to 10 wt.%, preferably of 0.5 to 9 wt.%, more preferably of 1 to 8 wt.% and most preferably of 1.5 to 7 wt.%.

[0399] The agent (a") contains water. In a preferred embodiment, a multi-component packaging unit (kit-of-parts) is characterized in that the agent (a") – based on the total weight of the agent (a") – has a water content of 15 to 99.9 wt.%, preferably 35 to 99.5 wt.%, more preferably 55 to 99 wt.%, even more preferably 65 to 99 wt.%, and most preferably 75 to 99 wt.%.

[0400] Within this embodiment, the ready-to-use agent (a) is now produced by mixing the agents (a') and (a").

[0401] For example, the user can first mix or shake the agent (a'), which contains the organic silicon compound(s) (a1), with the aqueous, dye-containing agent (a"). The user can then apply this mixture of (a') and (a") to the keratinous materials, either directly after preparation or after a short reaction time of 10 seconds to 20 minutes. Following this, the user can apply agent (b) as described previously.

[0402] In a further embodiment, a preferred method comprises the following steps in the specified order. (1) Preparation of an agent (a) by mixing a first agent (a') and a second agent (a"), wherein ∘ the first agent (a') contains at least one organic silicon compound (a1) from the group of silanes with one, two or three silicon atoms, and ∘ the second agent (a") contains at least one coloring compound (a2) from the group of pigments and / or direct dyes, (2) application of the agent (a) to the keratinous material, (3) allowing the agent (a) to act for a period of 10 seconds to 10 minutes, preferably from 10 seconds to 5 minutes, (4) optionally rinsing the keratinous material with water, (5) application of the agent (b) to the keratinous material, (6) allowing the agent (b) to act for a period of 30 seconds to 30 minutes, preferably from 30 seconds to 10 minutes, (7) optionally rinsing the keratinous material with water, (8) application of the agent (c) to the keratinous material,(9) Allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (10) rinsing the keratinous material with water, (11) applying the agent (c) to the keratinous material, (12) allowing the agent (c) to act for a period of 30 seconds to 10 minutes, preferably 30 seconds to 5 minutes, and (13) rinsing the keratinous material with water. Multi-component packaging unit (kit-of-parts)

[0403] To increase user convenience, all necessary resources are preferably provided to the user in the form of a multi-component packaging unit (kit-of-parts).

[0404] A second object of the present invention is therefore a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising separately assembled components. a first container with an agent (a') wherein the agent (a') contains: (a1) at least one organic silicon compound from the group of silanes having one, two or three silicon atoms, and a second container with an agent (a") wherein the agent (a") contains: (a2) at least one coloring compound from the group of pigments and / or direct dyes, a third container with an agent (b) wherein the agent (b) contains: (b1) at least one sealing reagent, and a fourth container with an agent (c) wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer, the components (a1), (a2), (b1), (c1) and (c2) have been disclosed in detail above.

[0405] The organic silicon compounds (a1) from the group of silanes with one, two or three silicon atoms contained in the mean (a') of the kit correspond to the organic silicon compounds that were also used in the mean (a) of the previously described process.

[0406] The coloring compound (a2) contained in the average (a") of the kit from the group of pigments and / or direct dyes corresponds to the coloring compounds that can also be used in the average (a) of the previously described process.

[0407] The sealing reagents (b1) contained in the mean (b) of the kit are the same as the sealing reagents used in the mean (b) of the previously described procedure.

[0408] The hydroxyamine-functionalized silicone polymer (c1) contained in the average (c) of the kit is identical to the hydroxyamine-functionalized silicone polymer (c1) used in the average (c) of the previously described process.

[0409] In a further embodiment, a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising separately assembled components, is preferred. a first container with an agent (a') wherein the agent (a') contains: at least one organic silicon compound (a1) from the group of silanes with one, two or three silicon atoms, and a second container with an agent (a") wherein the agent (a") contains: (a2) at least one coloring compound from the group of pigments and / or direct dyes, and a third container with an agent (a‴) wherein the agent (a‴) contains: water, a fourth container with an agent (b) wherein the agent (b) contains: (b1) at least one sealing reagent, a fifth container with an agent (c) wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer, the components (a1), (a2), (b1) and (c1) have been disclosed in detail above.

[0410] In this embodiment, the agents (a') and (a") have a low water content. To produce the ready-to-use agent (a), the agents (a'), (a") and (a‴) are mixed. The agent (a‴) contains water and preferably represents a water-containing cosmetic carrier.

[0411] In a further embodiment, a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising separately assembled components, is preferred. a first container with an agent (a') wherein the agent (a') contains: at least one organic silicon compound (a1) from the group of silanes with one, two or three silicon atoms, a second container with an agent (a") wherein the agent (a") contains: (a2) at least one coloring compound from the group of pigments and / or direct dyes, and a third container with an agent (b) wherein the agent (b) contains: (b1) at least one sealing reagent, a fourth container with an agent (c) wherein the agent (c) contains: (c1) a hydroxyamine-functionalized silicone polymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer", the components (a1), (a2), (b1) and (c1) have been disclosed in detail above.

[0412] In yet another embodiment, a multi-component packaging unit (kit-of-parts) for dyeing keratinous material, comprising separately assembled components, is preferred. a first container with an agent (a') wherein the agent (a') contains: (a1) at least one organic silicon compound from the group of silanes with one, two or three silicon atoms, a second container with an agent (a") wherein the agent (a") contains: (a2) at least one coloring compound from the group of pigments and / or direct dyes, a third container with an agent (a‴) wherein the agent (a‴) contains: water, a fourth container with an agent (b) wherein the agent (b) contains: (b1) at least one sealing reagent, and a fifth container with an agent (c) wherein the agent (c) contains: (c1) a hydroxyamine-functionalized silicone polymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer".

[0413] Regarding the other preferred embodiments of the multi-component packaging units, the following applies: mutatis mutantis That's what was said about the procedure. Examples Example 1

[0414] The following formulations were produced (unless otherwise stated, all values ​​are in wt.%) Medium (a')

[0415] Medium (a') % by weight (3-Aminopropyl)triethoxysilane (a1) 20 Methyltrimethoxysilane (a1) 70 Water ad 100 Means (a")

[0416] Means (a") % by weight Phthalocyanine blue pigment CI 74160 (a2) 5 PEG-12 Dimethicone 5 Hydroxyethylcellulose 1 Water ad 100

[0417] The ready-to-use product (a) was prepared by mixing 5 g of product (a') and 20 g of product (a"). The pH of product (a) was adjusted to 10.5 by adding ammonia or lactic acid. Means (b)

[0418] Means (b) % by weight Ethylene / Sodium Acrylate Copolymer (b1) (25% solution) 40 Water ad 100 Means (c)

[0419] Post-treatment agents, agents (c) % by weight Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer (INCI) (c1) 1,8 2-Butyloctanol 0,2 Distearoylethyl Hydroxyethylmonium Methosulfate (INCI) 1 Polyquaternium-37 0,4 Water ad 100

[0420] The product (a) was massaged into a strand of hair (Kerling, Euronaturhaar white) and left to act for 1 minute. Afterwards, the product (a) was rinsed out with water.

[0421] Following this, the product (b) was applied to the hair strands, left on for 1 minute and then rinsed out with water.

[0422] The hair strand was then moistened with a small amount of the product (c). The product (c) was left on for 1 minute. It was then rinsed with water and the hair strands were dried.

[0423] The hair strand was given an intense blue color with very good wash fastness and high color brilliance.

Claims

1. A method for coloring keratinous material, in particular human hair, comprising the following steps: - applying an agent (a) to the keratinous material, wherein the agent (a) contains: (a1) at least one organic silicon compound from the group of silanes with one, two, or three silicon atoms, - applying an agent (b) to the keratinous material, wherein the agent (b) contains: (b1) at least one sealing reagent, and - applying an agent (c) to the keratinous material, wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer, wherein at least one of the agents (a) and (b) further contains at least one coloring compound from the group of pigments and / or direct dyes.

2. Process according to claim 1, characterized in that agent (a) contains at least one organic silicon compound (a1) of formula (I) and / or (II)         R1R2N-L-Si(OR3)a(R4)b     (I), wherein - R1, R2 independently represent a hydrogen atom or a C1-C6 alkyl group, - L represents a linear or branched, divalent C1-C20 alkylene group, - R3, R4 independently represent a C1-C6 alkyl group, - a represents an integer from 1 to 3, and - b represents the integer 3 - a, and wherein, in the organic silicon compound of formula (II)         (R5O)c(R6)dSi-(A)e-[NR7-(A')]f-[O-(A")]g-[NR8-(A‴)]h-Si(R6')d'(OR5')c'     (II), - R5, R5', R5", R6, R6' and R6" independently represent a C1-C6 alkyl group, - A, A', A", A‴ and Aʺʺ independently represent a linear or branched, divalent C1-C20 alkylene group, - R7 and R8 independently represent a hydrogen atom, a C1-C6 alkyl group, a hydroxy-C1-C6 alkyl group, a C2-C6 alkenyl group, an amino-C1-C6 alkyl group or a group of formula (III)         - (Aʺʺ)-Si(R6")d"(OR5")c"     (III), - c represents an integer from 1 to 3, - d represents the integer 3 - c, - c' represents an integer from 1 to 3, - d' represents the integer 3 - c', - c" represents an integer from 1 to 3, - d" is the integer 3 - c", - e is 0 or 1, - f is 0 or 1, - g is 0 or 1, - h is 0 or 1, with the proviso that at least one of the radicals e, f, g, and h is different from 0.

3. Method according to one of claims 1 or 2, characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (I),         R1R2N-L-Si(OR3)a(R4)b     (I), where - R1, R2 both represent a hydrogen atom, and - L is a linear, divalent C1-C6 alkylene group, preferably a propylene group (-CH2-CH2-CH2-) or an ethylene group (-CH2-CH2-), - R3 and R4 independently represent a methyl group or an ethyl group, - a represents the number 3, and - b represents the number 0.

4. Method according to one of claims 1 to 3, characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (II),         (R5O)c(R6)dSi-(A)e-[NR7-(A')]f-[O-(A")]g-[NR8-(A‴)]h-Si(R6')d'(OR5')c'     (II), wherein - e and f both represent the number 1, - g and h both represent the number 0, - A and A' independently represent a linear, divalent C1-C6 alkylene group, and - R7 represents a hydrogen atom, a methyl group, a 2-hydroxyethyl group, a 2-alkenyl group, a 2-aminoethyl group or a group of formula (III).

5. A process according to any one of claims 1 to 4, characterized in that it contains at least one organic silicon compound (a1) of formula (I) selected from the group consisting of - (3-aminopropyl)triethoxysilane - (3-aminopropyl)trimethoxysilane - 1-(3-aminopropyl)silane triol - (2-aminoethyl)triethoxysilane - (2-aminoethyl)trimethoxysilane - 1-(2-aminoethyl)silane triol - (3-dimethylaminopropyl)triethoxysilane - (3-dimethylaminopropyl)trimethoxysilane - 1-(3-dimethylaminopropyl)silane triol - (2-dimethylaminoethyl)triethoxysilane - (2-dimethylaminoethyl)trimethoxysilane and / or - 1-(2-dimethylaminoethyl)silane triol and / or that the agent (a) contains at least one organic silicon compound (a1) of formula (II), which is selected from the group consisting of - 3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine - 3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine - N-methyl-3-(trimethoxysilyl)-N-[3-(trimethoxysilyl)propyl]-1-propanamine - N-methyl-3-(triethoxysilyl)-N-[3-(triethoxysilyl)propyl]-1-propanamine - 2-[Bis[3-(trimethoxysilyl)propyl]amino]-ethanol - 2-[Bis[3-(triethoxysilyl)propyl]amino]-ethanol - 3-(trimethoxysilyl)-N,N-bis[3-(trimethoxysilyl)propyl]-1-propanamine - 3-(triethoxysilyl)-N,N-bis[3-(triethoxysilyl)propyl]-1-propanamine - N1,N1-Bis[3-(trimethoxysilyl)propyl]-1,2-ethanediamine, - N1,N1-Bis[3-(triethoxysilyl)propyl]-1,2-ethanediamine, - N,N-Bis[3-(trimethoxysilyl)propyl]-2-propen-1-amine and / or - N,N-Bis[3-(triethoxysilyl)propyl]-2-propen-1-amine.

6. Process according to one of claims 1 to 5, characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (IV).         R9Si(OR10)k(R11)m     (IV), where - R9 represents a C1-C18 alkyl group, - R10 represents a hydrogen atom or a C1-C6 alkyl group, - R11 represents a C1-C6 alkyl group - k represents an integer from 1 to 3, and - m represents the integer 3 - k.

7. A method according to any one of claims 1 to 6, characterized in that the agent (a) contains at least one organic silicon compound (a1) of formula (IV) selected from the group consisting of - methyltrimethoxysilane - methyltriethoxysilane - ethyltrimethoxysilane - ethyltriethoxysilane - hexyltrimethoxysilane - hexyltriethoxysilane - octyltrimethoxysilane - octyltriethoxysilane - dodecyltrimethoxysilane, - dodecyltriethoxysilane, - octadecyltrimethoxysilane, - Octadecyltriethoxysilane and - Mixtures thereof.

8. Process according to one of claims 1 to 7, characterized in that the agent (a) contains at least two structurally different organic silicon compounds (a1).

9. Process according to one of claims 1 to 8, characterized in that the agent (c) comprises, as a hydroxyamine-functionalized silicone polymer (c1), a hydroxyamine-functionalized silicone polymer with the INCI designation "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer."10. Method according to one of claims 1 to 9, characterized in that agent (a) further comprises at least one coloring compound from the group of pigments and / or direct dyes.

11. Method according to one of claims 1 to 10, characterized in that the agent (b) further comprises at least one coloring compound from the group of pigments and / or direct dyes.

12. Method according to one of claims 1 to 11, characterized in that the agent (c) further contains 2-butyloctanol.

13. Multi-component packaging unit (kit of parts) for coloring keratinous material, comprising, packaged separately from each other - a first container with an agent (a'), wherein the agent (a') contains: (a1) at least one organic silicon compound from the group of silanes with one, two, or three silicon atoms, and - a second container with an agent (a"), wherein the agent (a") contains: (a2) at least one coloring compound from the group of pigments and / or direct dyes, - a third container with an agent (b), wherein the agent (b) contains: (b1) at least one sealing reagent, and - a fourth container with an agent (c), wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer.

14. Multi-component packaging unit (kit of parts) for coloring keratinous material, comprising, packaged separately from each other - a first container with an agent (a'), wherein the agent (a') contains: (a1) at least one organic silicon compound from the group of silanes with one, two, or three silicon atoms, - a second container with an agent (a"), wherein the agent (a") contains: (a2) at least one coloring compound from the group of pigments and / or direct dyes, - a third container with an agent (a"'), wherein the agent (a‴) contains: water, - a fourth container with an agent (b), wherein the agent (b) contains: (b1) at least one sealing reagent, and - a fifth container with an agent (c), wherein the agent (c) contains: (c1) at least one hydroxyamine-functionalized silicone polymer.

15. Multi-component packaging unit (kit-of-parts) for coloring keratinous material according to claim 13 or claim 14, characterized in that the at least one hydroxyamine-functionalized silicone polymer (c1) comprises a hydroxyamine-functionalized silicone polymer with the INCI name "Bis-Diisopropanolamino-PG-Propyl Disiloxane / Bis-Vinyl Dimethicone Copolymer".