METHOD FOR COLORING KERATINIC MATERIAL WITH AMINO SILICONE AND COLOR-GIVEN COMPOUND

Description

[0001] The present application relates to a method for coloring keratinous material, in particular human hair, which comprises the application of at least two different agents (a) and (b). Agent (a) is a concentrate containing at least one amino-functionalized silicone polymer (a1). Agent (b) is a carrier formulation comprising water (b1), at least one fatty component (b2), and at least one coloring compound (b3). Before application, an application mixture is prepared by mixing agents (a) and (b), which is applied to the keratinous material, allowed to act, and then rinsed off.

[0002] Altering the shape and color of keratinous material, especially human 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, oxidative dyes are typically used. These dyes contain oxidative dye precursors, so-called developer components and coupler components, which react with oxidizing agents such as hydrogen peroxide to form the actual dyes. Oxidative dyes are characterized by very long-lasting color results.

[0003] 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.

[0004] 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 removed completely after a few washes with surfactant-containing cleansers. Various products of this type are available on the market under the name "hair mascara."

[0005] The particular advantage of a hair mascara product lies in the fact that the coloring compounds, such as pigments, are deposited only as a film on the surface of the keratin fiber. The structure of the keratin fiber itself is therefore not altered during application, resulting in minimal hair damage. If the user wishes to return to their original hair color, the dye can be quickly, completely, and without leaving any residue on the keratin fiber, without damaging the fibers or altering the original hair color. The development of pigment-based keratin dyes is therefore very much in vogue. WO 2018 / 115059 seeks a method for dyeing keratin fibers that can achieve intense, chromatic, strong, and selective colorations (p. 2, lines 19-25).Example 2 describes a procedure in which a first composition (A1) is applied to the hair. Subsequently, the hair is treated with a second composition (B) (Example 1, p. 60, protocol (P4), lines 30-35).

[0006] However, there is still room for improvement in this dyeing system, particularly in terms of durability and equalizing ability.

[0007] The object of the present invention was to provide a dyeing system that, if possible, possesses colorfastness properties comparable to oxidative dyeing. In particular, the wash fastness was to be outstanding, but without the use of the oxidative dye precursors typically employed for this purpose. A technology was sought that would enable the coloring compounds (especially pigments) known from the prior art to be fixed to the hair in an extremely durable manner. When the agents were used in a dyeing process, intense coloring results with good colorfastness properties were to be achieved. A particular focus of the objective was to achieve a homogeneous dyeing result, i.e., the keratin fibers were to be dyed very uniformly, regardless of their structure, length, and condition.

[0008] Surprisingly, it has now been found that the aforementioned problem can be solved excellently when keratinous materials, especially hair, are colored using a process in which at least two agents (a) and (b) are applied to the keratinous materials (hair). Agent (a) contains at least one amino-functionalized silicone polymer (a1). Agent (a) is preferably in the form of a concentrate, which is formulated with low water content or is anhydrous and contains the aminosilicone (a1) as its main component.

[0009] Before application, the agent (a) is mixed with a second agent (b), wherein agent (b) contains, in addition to water (b1), at least one fatty component (b2) and at least one coloring compound (b3). The application mixture produced by mixing agents (a) and (b) is then applied to the keratin material, allowed to take effect, and subsequently rinsed off with water.

[0010] A first object of the present invention is a method for dyeing keratinous material, in particular human hair, comprising the following steps: (1) Provision of an agent (a) wherein the agent (a) contains less than 10.0 wt% water based on the total weight of the agent (a) and contains: (a1) at least one amino-functionalized silicone polymer, and (2) Provision of an agent (b) wherein the agent (b) contains: (b1) water and (b2) at least one fat component and (b3) at least one coloring compound, (3) Preparation of an application mixture by mixing the agents (a) and (b), (4) Application of the application mixture prepared in step (3) to the keratinous material, (5) Action of the application mixture applied in step (4) on the keratinous material and (6) Rinsing off the application mixture with water.

[0011] The work leading to this invention has shown that particularly intense, homogeneous, and long-lasting color results can be obtained on the keratin material when the agent (a) is provided in the form of the previously described concentrate, wherein this concentrate (a) is mixed with the actual coloring agent (b) only shortly before application. Surprisingly, a much more intense, homogeneous, and longer-lasting color result can be achieved with an application mixture that is only obtained shortly before application by mixing the two agents (a) and (b) compared to an otherwise identical formulation that contains all components of both agents (a) and (b) from the outset. Keratinous material

[0012] 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.

[0013] 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)

[0014] In step (1) of the method according to the invention, the agent (a) is provided. For example, the agent (a) can be in a packaging unit or a container and thus made available to the user. The container can be, for example, a sachet, a bottle, a can, a jar, or another container suitable for cosmetic formulations. Since the agent (a) preferably represents a concentrate of the aminosilicone (a1), a container suitable for concentrates can be particularly preferably selected for packaging the agent (a).

[0015] The agent (a) is characterized by its content of the essential component (a1) of the invention. Amino-functionalized silicone polymer (a1) in the mean (A)

[0016] The essential ingredient (a1) of the composition (a) is at least one amino-functionalized silicone polymer. The amino-functionalized silicone polymer can alternatively also be referred to as aminosilicone or amodimethicone.

[0017] Silicone polymers are generally macromolecules with a molecular weight of at least 500 g / mol, preferably at least 1000 g / mol, more preferably at least 2500 g / mol, and particularly preferably at least 5000 g / mol, comprising repeating organic units.

[0018] The maximum molecular weight of the silicone 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 silicone polymer is not more than 10⁷ g / mol, preferably not more than 10⁶ g / mol, and particularly preferably not more than 10⁵ g / mol.

[0019] Silicone polymers contain many Si-O repeating units, where the Si atoms can bear organic groups such as alkyl groups or substituted alkyl groups. Therefore, a silicone polymer is also alternatively referred to as polydimethylsiloxane.

[0020] In accordance with the high molecular weight of the silicone polymers, these are based on more than 10 Si-O repeat units, preferably more than 50 Si-O repeat units and particularly preferably more than 100 Si-O repeat units, most preferably more than 500 Si-O repeat units.

[0021] An amino-functionalized silicone polymer is defined as a functionalized silicone that contains at least one structural unit with an amino group. Preferably, the amino-functionalized silicone polymer contains several structural units, each with at least one amino group. An amino group is defined as a primary amino group, a secondary amino group, or a tertiary amino group. All of these amino groups can be protonated in an acidic environment and then exist in their cationic form.

[0022] In principle, good results could be achieved with amino-functionalized silicone polymers (a1) if they contained at least one primary, at least one secondary and / or at least one tertiary amino group. However, intense colorations with the best wash fastness were obtained when an amino-functionalized silicone polymer (a1) containing at least one secondary amino group was used in the mean (a).

[0023] In a particularly preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one amino-functionalized silicone polymer (a1) with at least one secondary amino group.

[0024] The secondary amino group(s) can be located at various positions within the amino-functionalized silicone polymer. Particularly good results were observed when an amino-functionalized silicone polymer (a1) was used that possesses at least one, and preferably several, structural units of the formula (Si-Amino).

[0025] In the structural units of the formula (Si-Amino), the abbreviations ALK1 and ALK2 stand independently for a linear or branched, divalent C 1 -C 20 -alkylene group.

[0026] In a further particularly preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one amino-functionalized silicone polymer (a1) comprising at least one structural unit of the formula (Si-Amino), where ALK1 and ALK2 independently represent a linear or branched, divalent C1-C20 alkylene group.

[0027] The positions marked with an asterisk (*) indicate the bond to other structural units of the silicone polymer. For example, the silicon atom adjacent to the asterisk may be bonded to another oxygen atom, and the oxygen atom adjacent to the asterisk may be bonded to another silicon atom or to a C1-C6 alkyl group.

[0028] A divalent C1-C20 alkylene group can alternatively also be referred to as a divalent or divalent C1-C20 alkylene group, meaning that each group ALK1 or AK2 can form two bonds.

[0029] In the case of ALK1, a bond is formed from the silicon atom to the ALK1 group, and the second bond is formed between ALK1 and the secondary amino group.

[0030] In the case of ALK2, a bond is formed from the secondary amino group to the ALK2 group, and the second bond is formed between ALK2 and the primary amino group.

[0031] Examples of linear divalent C1-C20 alkylene groups 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-).

[0032] In a further particularly preferred embodiment, the structural units of the formula (Si-Amino) represent repeating units in the amino-functionalized silicone polymer (a1), such that the silicone polymer comprises several structural units of the formula (Si-Amino).

[0033] The following is a list of particularly suitable amino-functionalized silicone polymers (a1) with at least one secondary amino group.

[0034] Dyes with the very best wash fastness could be obtained when, in the inventive process, at least one agent (a) was applied to the keratinous material, which contains at least one amino-functionalized silicone polymer (a1) comprising structural units of formula (Si-I) and formula (Si-II).

[0035] In a further explicitly preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one amino-functionalized silicone polymer (a1) comprising structural units of formula (Si-I) and formula (Si-II).

[0036] An example of a corresponding amino-functionalized silicone polymer with the structural units (Si-I) and (Si-II) is the commercial product DC 2-8566 or Dowsil 2-8566 Amino Fluid, which is marketed by the Dow Chemical Company and bears the name "Siloxanes and Silicones, 3-[(2-Aminoethyl)amino]-2-methylpropyl Me, Di-Me-Siloxane" and the CAS number 106842-44-8. Another particularly preferred commercial product is Dowsil AP-8658 Amino Fluid, which is also marketed by the Dow Chemical Company.

[0037] In a further 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 amino-functional silicone polymer (a1) of the formula (Si-III), where m and n represent numbers chosen such that the sum (n + m) is in the range of 1 to 1000, n is a number in the range of 0 to 999 and m is a number in the range of 1 to 1000, R1, R2 and R3, which may be the same or different, represent a hydroxy group or a C1-4 alkoxy group, where at least one of the groups R1 to R3 represents a hydroxy group;

[0038] Further methods preferred according to the invention are characterized by the application of an agent (a) to the keratinous material, wherein the agent (a) contains at least amino-functional silicone polymer (a1) of the formula of formula (Si-IV), in the p and q represent numbers chosen such that the sum (p + q) is in the range of 1 to 1000, p is a number in the range of 0 to 999 and q is a number in the range of 1 to 1000, R1 and R2, which are different, represent a hydroxy group or a C1-4 alkoxy group, where at least one of the groups R1 to R2 represents a hydroxy group.

[0039] The silicones of formulas (Si-III) and (Si-IV) differ in the grouping at the silicon atom bearing the nitrogenous group: In formula (Si-III), R2 represents a hydroxyl group or a C1-4 alkoxy group, while in formula (Si-IV) the group is a methyl group. The individual silicon groups, designated with the indices m and n or p and q, do not necessarily exist as blocks; rather, the individual units can also be statistically distributed. That is, in formulas (Si-III) and (Si-IV), not every R1-Si(CH3)2 group is necessarily bonded to a -[O-Si(CH3)2] group.

[0040] Methods according to the invention have also proven to be particularly effective with regard to the desired effects, in which an agent (a) is applied to the keratin fibers, which contains at least one amino-functional silicone polymer (a1) of the formula of the formula (Si-V). in the A represents a group -OH, -O-Si(CH 3 ) 3 ,-O-Si(CH 3 ) 2 OH ,-O-Si(CH 3 ) 2 OCH 3, D represents a group -H, -Si(CH 3 ) 3 ,-Si(CH 3 ) 2 OH, -Si(CH 3 ) 2 OCH 3, b, n and c represent integers between 0 and 1000, with the conditions n > 0 and b + c > 0 that at least one of the conditions A = -OH or D = -H is satisfied.

[0041] In the above-mentioned formula (Si-V), the individual siloxane units with the indices b, c and n are statistically distributed, i.e., they do not necessarily have to be block copolymers.

[0042] The agent (a) may furthermore contain one or more different amino-functionalized silicone polymers described by the formula (Si-VI) M(R a Q b SiO (4-ab) / 2)x (R c SiO (4-c) / 2)y M (Si-VI), where in the above formula R is a hydrocarbon or a hydrocarbon residue with 1 to about 6 carbon atoms, Q is a polar residue of the general formula -R 1< HZ, wherein R 1< is a divalent, connecting group bonded to hydrogen and the residue Z, composed of carbon and hydrogen atoms, carbon, hydrogen and oxygen atoms or carbon, hydrogen and nitrogen atoms, and Z is an organic, amino-functional residue containing at least one amino-functional group;"a" takes on values ​​in the range of about 0 to about 2, "b" takes on values ​​in the range of about 1 to about 3, "a" + "b" is less than or equal to 3, and "c" is a number in the range of about 1 to about 3, and x is a number in the range of 1 to about 2,000, preferably from about 3 to about 50 and most preferably from about 3 to about 25, and y is a number in the range of about 20 to about 10,000, preferably from about 125 to about 10,000 and most preferably from about 150 to about 1,000, and M is a suitable silicon end group as known in the prior art, preferably trimethylsiloxy. Non-restrictive examples of residues represented by R include alkyl residues such as methyl, ethyl, propyl, isopropyl, isopropyl, butyl, isobutyl, amyl, isoamyl, hexyl, isohexyl and similar; alkenyl residues such as vinyl, halogenovinyl, alkylvinyl, allyl, haloallyl, alkylallyl; cycloalkyl residues such as cyclobutyl, cyclopentyl, cyclohexyl and similar;Phenyl groups, benzyl groups, halogenated hydrocarbon groups such as 3-chloropropyl, 4-bromobutyl, 3,3,3-trifluoropropyl, chlorocyclohexyl, bromophenyl, chlorophenyl and similar, as well as sulfur-containing groups such as mercaptoethyl, mercaptopropyl, mercaptohexyl, mercaptophenyl and similar; preferably R is an alkyl group containing 1 to about 6 carbon atoms, and most preferably R is methyl. Examples of R 1< include methylene, ethylene, propylene, hexamethylene, decamethylene, -CH 2 CH(CH 3 )CH 2 -, phenylene, naphthylene, -CH 2 CH 2 SCH 2 CH 2 -, -CH 2 CH 2 OCH 2 -, -OCH 2 CH 2 -, -OCH 2 CH 2 CH 2 -, -CH 2 CH(CH 3 )C(O)OCH 2 -, -(CH 2 ) 3 CC(O)OCH 2 CH 2 -, -C 6 H 4 C 6 H 4 -, -C 6 H 4 CH 2 C 6 H 4 -; and -(CH 2 ) 3 C(O)SCH 2 CH 2 -.;

[0043] Z is an organic, amino-functional residue containing at least one functional amino group. One possible formula for Z is NH(CH₂)zNH₂, where z is 1 or more. Another possible formula for Z is -NH(CH₂)z(CH₂)zzNH, where both z and zz are independently 1 or more, this structure including diamino ring structures such as piperazinyl. Z is most preferably an -NHCH₂CH₂NH₂ residue. Another possible formula for Z is -N(CH₂)z(CH₂)zzNX₂ or -NX₂, where each X of X₂ is independently selected from the group consisting of hydrogen and alkyl groups with 1 to 12 carbon atoms, and zz is 0.

[0044] Q is most preferably a polar, amine-functional residue of the formula -CH 2 CH 2 CH 2 NHCH 2 CH 2 NH 2 . In the formulas, "a" takes values ​​in the range of about 0 to about 2, "b" takes values ​​in the range of about 2 to about 3, "a" + "b" is less than or equal to 3, and "c" is a number in the range of about 1 to about 3. The molar ratio of the RaQbSiO(4-ab) / 2 units to the RcSiO(4-c) / 2 units is in the range of about 1:2 to 1:65, preferably from about 1:5 to about 1:65, and most preferably from about 1:15 to about 1:20. If one or more silicones of the above formula are used, then the various variable substituents in the above formula can differ depending on the silicone components present in the silicone mixture.

[0045] 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 an amino-functional silicone polymer of the formula (Si-VII) R' a G 3-a -Si(OSiG 2 ) n -(OSiG b R' 2- b ) m -O-SiG 3-a -R' a (Si-VII), wherein: G is-H, a phenyl group, -OH, -O-CH3, -CH3, -O-CH2CH3, -CH2CH3, -O-CH2CH2CH3, -CH2CH2CH3, -O-CH(CH3)2, -CH(CH3)2, -O-CH2CH2CH2CH3, -CH2CH2CH2CH3, -O-CH2CH(CH3)2, -CH2CH(CH3)2, -O-CH(CH3)CH2CH3, -CH(CH3)CH2CH3, -OC(CH3)3, -C(CH3)3; a represents a number between 0 and 3, in particular 0; b represents a number between 0 and 1, in particular 1; m and n are numbers whose sum (m + n) is between 1 and 2000, preferably between 50 and 150, where n preferably takes values ​​from 0 to 1999 and in particular from 49 to 149, and m preferably takes values ​​from 1 to 2000, in particular from 1 to 10; R' is a monovalent residue selected from ∘ -QN(R")-CH 2 -CH 2 -N(R") 2 ∘ -QN(R") 2 ∘ -QN +< (R") 3 A -< ∘ -QN +< H(R") 2 A -< ∘ -QN +< H 2 (R")A -< ∘ -QN(R")-CH 2 -CH 2 -N +< R"H 2 A -< , where each Q represents a chemical bond, -CH 2 -, -CH 2 -CH 2 -, -CH 2 CH 2 CH 2 -, -C(CH 3 ) 2 -,-CH₂CH₂CH₂CH₂-, -CH₂C(CH₃)₂-, -CH(CH₃)CH₂CH₂- stands for, R" represents identical or different residues from the group -H, -Phenyl, -Benzyl, -CH₂-CH(CH₃)Ph, the C₁-20 alkyl residues, preferably -CH₃, -CH₂CH₃, -CH₂CH₂CH₃, -CH(CH₃)₂, -CH₂CH₂CH₂H₃, -CH₂CH(CH₃)₂, -CH(CH₃)CH₂CH₃, -C(CH₃)₃, and A represents an anion, which is preferably selected from chloride, bromide, iodide, or methosulfate.

[0046] In a further 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 amino-functional silicone polymer (a1) of the formula (Si-Vlla), wherein m and n are numbers whose sum (m + n) is between 1 and 2000, preferably between 50 and 150, wherein n preferably takes values ​​from 0 to 1999 and in particular from 49 to 149 and m preferably takes values ​​from 1 to 2000, in particular from 1 to 10.

[0047] According to the INCI declaration, these silicones are called Trimethylsilylamodimethicone.

[0048] In a further 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 amino-functional silicone polymer of the formula (Si-Vllb). containing, wherein R represents -OH, -O-CH 3 or a -CH 3 group and m, n1 and n2 are numbers whose sum (m + n1 + n2) is between 1 and 2000, preferably between 50 and 150, wherein the sum (n1 + n2) preferably takes values ​​from 0 to 1999 and in particular from 49 to 149 and m preferably takes values ​​from 1 to 2000, in particular from 1 to 10.

[0049] These amino-functionalized silicone polymers are called Amodimethicone according to the INCI declaration.

[0050] Regardless of which amino-functional silicones are used, compositions (a) according to the invention are preferred which contain an amino-functional silicone polymer whose amine number is above 0.25 meq / g, preferably above 0.3 meq / g, and particularly above 0.4 meq / g. The amine number represents the milliequivalents of amine per gram of the amino-functional silicone. It can be determined by titration and can also be expressed in mg KOH / g.

[0051] Furthermore, agents (a) are also suitable for use in the process according to the invention, which contain a special 4-morpholinomethyl-substituted silicone polymer (a1). This amino-functionalized silicone polymer comprises structural units of formulas (Si-VIII) and (Si-IX).

[0052] Corresponding 4-morpholinomethyl-substituted silicone polymers are described below.

[0053] One particularly favored amino-functionalized silicone polymer is known as Amodimethicone / Morpholinomethyl Silsesquioxane Copolymer and is commercially available from Wacker in the form of the raw material Belsil ADM 8301 E.

[0054] For example, a silicone with structural units of formulas (Si-VIII), (Si-IX) and (Si-X) can be used as a 4-morpholinomethyl-substituted silicone. in which R1 represents -CH3, -OH, -OCH3, -O-CH2CH3, -O-CH2CH2CH3, or -O-CH(CH3)2; R2 represents -CH3, -OH, or -OCH3.

[0055] Particularly preferred compositions according to the invention (a) contain at least one 4-morpholinomethyl-substituted silicone of formula (Si-XI) in the R1 represents -CH3, -OH, -OCH3, -O-CH2CH3, -O-CH2CH2CH3, or -O-CH(CH3)2; R2 represents -CH3, -OH, or -OCH3. B represents a group -OH, -O-Si(CH3)3, -O-Si(CH3)2OH, -O-Si(CH3)2OCH3; D represents a group -H, -Si(CH3)3, -Si(CH3)2OH, -Si(CH3)2OCH3. independently of each other stand for integers between 0 and 1000, with the proviso a + b + c> 0 m and n independently of each other stand for integers between 1 and 1000 with the proviso that at least one of the conditions B = -OH or D = -H is fulfilled, the units a, b, c, m and n are statistically or block-wise distributed in the molecule.

[0056] The structural formula (Si-XI) is intended to illustrate that the siloxane groups n and m do not necessarily have to be directly bonded to a terminal group B or D, respectively. Rather, in preferred formulas (Si-VI), a > 0 or b > 0, and in particularly preferred formulas (Si-VI), a > 0 and c > 0, meaning that the terminal group B or D is preferably bonded to a dimethylsiloxy group. In formula (Si-VI), the siloxane units a, b, c, m, and n are also preferably statistically distributed.

[0057] The silicones used according to the invention, represented by formula (Si-VI), can be trimethylsilyl-terminated (D or B = -Si(CH3)3), but they can also be dimethylsilylhydroxy-terminated on both sides or dimethylsilylhydroxy- and dimethylsilylmethoxy-terminated on one side. Silicones particularly preferred within the scope of the present invention are selected from silicones in which B = -O-Si(CH 3 ) 2 OH and D = -Si(CH 3 ) 3 B = -O-Si(CH 3 ) 2 OH and D = -Si(CH 3 ) 2 OH B = -O-Si(CH 3 ) 2 OH and D = -Si(CH 3 ) 2 OCH 3 B = -O-Si(CH 3 ) 3 and D= -Si(CH 3 ) 2 OH B = -O-Si(CH 3 ) 2 OCH 3 and D = -Si(CH 3 ) 2 OH This means that these silicones lead to exorbitant improvements in the hair properties of the hair treated with the inventive agents, and to significantly improved protection during oxidative treatment.

[0058] The agent (a) used in the process according to the invention is most preferably a concentrate containing the amino-functionalized silicone polymer(s) (a1) in correspondingly high amounts. Particularly good dyeing results were obtained when the agent (a) contains – based on the total weight of the agent (a) – one or more amino-functionalized silicone polymers (a1) in a total amount of 5 to 100 wt.%, preferably 25 to 100 wt.%, more preferably 50 to 100 wt.%, and most preferably 75 to 100 wt.%.

[0059] In this formulation, the aminosilicones (a1) are either used in their pure form, or a solubilizer, diluent or carrier is added to the aminosilicones (a1) in small quantities.

[0060] In a further particularly 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 amino-functionalized silicone polymers (a1) in a total amount of 5 to 100 wt.%, preferably 25 to 100 wt.%, more preferably 50 to 100 wt.% and most preferably 75 to 100 wt.%. solvent in average (a)

[0061] For example, a solvent can be used as a suitable solubilizer or diluent in the composition (a). Therefore, the composition (a) according to the invention can optionally contain at least one additional solvent.

[0062] Suitable solvents include, for example, solvents from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerin, phenoxyethanol, and benzyl alcohol. The use of 1,2-propylene glycol is particularly preferred.

[0063] In a further particularly preferred embodiment, a method according to the invention is characterized in that the agent (a) contains at least one solvent from the group consisting of 1,2-propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerin, phenoxyethanol and benzyl alcohol, most preferably 1,2-propylene glycol.

[0064] 1,2-Propylene glycol is also known as 1,2-propanediol and has the CAS numbers 57-55-6 [(RS)-1,2-dihydroxypropane], 4254-14-2 [(R)-1,2-dihydroxypropane], and 4254-15-3 [(S)-1,2-dihydroxypropane]. Ethylene glycol is also known as 1,2-ethanediol and has the CAS number 107-21-1. Glycerol is also known as 1,2,3-propanetriol and has the CAS number 56-81-5. Phenoxyethanol has the CAS number 122-99-6.

[0065] All of the solvents described above are commercially available from various chemical suppliers such as Aldrich or Fluka.

[0066] 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 solvents in a total amount of 1.0 to 80.0 wt.%, preferably 2.0 to 50.0 wt.%, more preferably 3.0 to 30.0 wt.% and most preferably 4.0 to 20.0 wt.%.

[0067] In a further particularly 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 1.0 to 95.0 wt.%, preferably 2.0 to 15.0 wt.%, more preferably 3.0 to 15.0 wt.% and most preferably 4.0 to 10.0 wt.% 1,2-propylene glycol. Packaging of the product (a)

[0068] As previously described, the agent (a) is a concentrate which preferably contains as its main component the essential ingredient (a1) of the invention.

[0069] The work carried out within the scope of this invention has led to the assumption that the pigments used in the dyeing process and the amino-functionalized silicone polymers (a1) can interact with each other. This interaction appears to take place primarily in aqueous environments or in water-containing media. One hypothesis is that an interaction occurs between the respective surface of the pigment and the amino groups of the silicone polymer, with the water possibly acting as a proton donor or proton acceptor.

[0070] This assumption is supported by observations showing that, in a formulation containing not only aminosilicone (a1) and pigment but also the components of the carrier formulation, i.e., water (b1) and fat components (b2) in higher concentrations, the precipitation of a resinous substance was observed after a few days. When this formulation was applied in a dyeing test after several days of storage, only dyeings with very low color intensity were obtained. Based on this observation, the preparation of the aminosilicones (a1) in a low-water or anhydrous environment has proven to be particularly advantageous.

[0071] The method according to the invention is characterized in that the agent (a) contains less than 10.0 wt.%, preferably less than 5.0 wt.%, more preferably less than 2.5 wt.% and most preferably less than 1.0 wt.% water, based on the total weight of the agent (a).

[0072] The method according to the invention is characterized in that the agent (a) - based on the total weight of the agent (a) - has a water content between 0 and 10.0 wt.%, preferably between 0 and 5.0 wt.%, more preferably between 0 and 2.5 wt.% and most preferably between 0 and 1.0 wt.%.

[0073] Further studies have now shown that the homogeneity of the color result depends primarily on the medium into which the coloring compounds (i.e., the pigments) are incorporated. When the pigments were stored together with the aminosilicone (a1) in the form of a premix, and this premix was only mixed with a cosmetic carrier formulation shortly before application, the color intensity and wash fastness could be significantly improved. However, this method of preparation has also been shown to have some disadvantages. If the mixture of aminosilicone (a1) and pigment was stored for an extended period, a reaction between the two components appeared to occur due to the storage time. While this reaction was slowed down in low-moisture or anhydrous environments, it nevertheless became significant after storage periods of several weeks.When dyeing appropriately stored agents, very poor miscibility of the aminosilion / pigment mixture with the carrier material was observed. This resulted in highly inhomogeneous color results.

[0074] For this reason, it has proven particularly advantageous if the agent (a) itself contains no pigment or if pigment is used only in very small quantities in the agent (a). Very small amounts of pigment can, for example, be incorporated into the agent (a) to color it or to give it a more aesthetically pleasing appearance.

[0075] In a further explicitly 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 pigments in a total content of less than 0.1 wt.%, preferably less than 0.05 wt.% and most preferably less than 0.01 wt.%.

[0076] In other words, in a further explicitly preferred embodiment, a method according to the invention is characterized in that the agent (a) - based on the total weight of the agent (a) - has a pigment content that is between 0 and 0.1 wt.%, preferably between 0 and 0.05 wt.% and most preferably between 0 and 0.01 wt.%.

[0077] It is explicitly and especially preferred if the agent (a) does not contain pigments. Means (b)

[0078] In step (2) of the method according to the invention, the agent (b) is provided. For example, the agent (b) can be in a packaging unit or a container and thus made available to the user. The container can be, for example, a sachet, a bottle, a can, a jar, or any other container suitable for cosmetic formulations.

[0079] The agent (b) represents the actual dyeing agent and is characterized by its content of water (b1) and fat component(s) (b2) as well as at least one coloring compound (b3).

[0080] When mixing agents (a) and (b), the preferably highly concentrated and low-water concentrate (a) is mixed with the actual dye (b). During this mixing, the aminosilicones (a1) are brought into contact with the pigments (b3) incorporated into an emulsion, so that the previously described interaction of the aminosilicones (a1) and pigments (b3) only begins at this moment of mixing. Surprisingly, it was observed that this type of formulation in the dyeing process leads to color results that are intense and wash-fast, and are also characterized by particularly good homogeneity. Average water content (b1) (b)

[0081] In contrast to composition (a), composition (b) preferably contains a high proportion of water. It has been found that compositions (b) containing 50.0 to 98.0 wt.%, preferably 60.0 to 90.0 wt.%, more preferably 70.0 to 90.0 wt.%, and most preferably 75.0 to 90.0 wt.% water (b1) are particularly well suited for use in the process according to the invention.

[0082] In a further explicitly preferred embodiment, a method according to the invention is characterized in that the agent (b) contains 50.0 to 98.0 wt.%, preferably 60.0 to 90.0 wt.%, more preferably 70.0 to 90.0 wt.% and most preferably 75.0 to 90.0 wt.% water (b1) based on the total weight of the agent (b). Fat components (b2) on average (b)

[0083] A further characteristic of product (b) is its content of at least one fat component (b2). It has been found that the use of at least one fat component results in product (b) being in the form of an emulsion, which allows for particularly good and rapid mixing with product (a).

[0084] The fat components are hydrophobic substances that can form emulsions in the presence of water by forming micelle systems.

[0085] For the purposes of this invention, "fat components" are defined as organic compounds with a solubility in water at room temperature (22 °C) and atmospheric pressure (760 mmHg) of less than 1 wt.%, preferably less than 0.1 wt.%. The definition of fat components explicitly includes only uncharged (i.e., nonionic) compounds. Fat components possess at least one saturated or unsaturated alkyl group with at least 12 carbon atoms. The molecular weight of the fat components is a maximum of 5000 g / mol, preferably a maximum of 2500 g / mol, and particularly preferably a maximum of 1000 g / mol. The fat components are neither polyoxyalkylated nor polyglycerylated compounds.

[0086] The fatty components (b2) contained in the average (b) are particularly preferred, selected from the group of C 12 -C 30 fatty alcohols, C 12 -C 30 fatty acid triglycerides, C 12 -C 30 fatty acid monoglycerides, C 12 -C 30 fatty acid diglycerides and / or hydrocarbons.

[0087] In a further preferred embodiment, a method according to the invention is characterized in that the agent (b) contains one or more fatty components (b2) from the group consisting of C 12 -C 30 fatty alcohols, C 12 -C 30 fatty acid triglycerides, C 12 -C 30 fatty acid monoglycerides, C 12 -C 30 fatty acid diglycerides and / or hydrocarbons.

[0088] Particularly preferred fat components in this context are those from the group consisting of C12-C30 fatty alcohols, C12-C30 fatty acid triglycerides, C12-C30 fatty acid monoglycerides, C12-C30 fatty acid diglycerides, and / or hydrocarbons. For the purposes of the present invention, only nonionic substances are explicitly considered fat components. Charged compounds such as fatty acids and their salts are not considered fat components.

[0089] C12-C30 fatty alcohols can be saturated, mono- or polyunsaturated, linear or branched fatty alcohols with 12 to 30 carbon atoms.

[0090] Examples of preferred linear saturated C12-C30 fatty alcohols are dodecan-1-ol (dodecyl alcohol, lauryl alcohol), tetradecan-1-ol (tetradecyl alcohol, myristyl alcohol), hexadecan-1-ol (hexadecyl alcohol, cetyl alcohol, palmityl alcohol), octadecan-1-ol (octadecyl alcohol, stearyl alcohol), arachiyl alcohol (eicosan-1-ol), heneicosyl alcohol (heneicosan-1-ol) and / or behenyl alcohol (docosan-1-ol).

[0091] Preferred linear unsaturated fatty alcohols are (9 Z )-Octadec-9-en-1-ol (oleyl alcohol), (9 E )-Octadec-9-en-1-ol (elaidyl alcohol), (9 Z 12 Z )-Octadeca-9,12-dien-1-ol (linoleyl alcohol), (9 Z 12 Z 15 Z )-Octadeca-9,12,15-trien-1-ol (linolenoyl alcohol), gadoleyl alcohol ((9 Z )-Eicos-9-en-1-ol), arachidone alcohol ((5 Z 8 Z ,11 Z 14 Z )-Eicosa-5,8,11,14-tetraen-1-ol), erucyl alcohol ((13Z)-docos-13-en-1-ol) and / or brassidyl alcohol ((13 E)-Docosen-1-ol).

[0092] The preferred representatives for branched fatty alcohols are 2-octyl-dodecanol, 2-hexyl-dodecanol and / or 2-butyl-dodecanol.

[0093] By selecting particularly suitable fat components, the polarity and viscosity of agent (b) can be optimally adjusted, ensuring complete and rapid mixing when agents (a) and (b) are combined. Due to the high homogeneity of the application mixture produced from (a) and (b), a particularly uniform color result can also be guaranteed.

[0094] In this context, it has been shown that in particular the use of at least one C 12 -C 30 fatty alcohol (b2) in the mean (b) creates an optimal emulsion system.

[0095] In one embodiment, particularly good results were obtained when the agent (b) contains one or more C12-C30 fatty alcohols from the group consisting of dodecan-1-ol (dodecyl alcohol, lauryl alcohol), tetradecan-1-ol (tetradecyl alcohol, myristyl alcohol), hexadecan-1-ol (hexadecyl alcohol, cetyl alcohol, palmityl alcohol), octadecan-1-ol (octadecyl alcohol, stearyl alcohol), arachidyl alcohol (eicosan-1-ol), heneicosyl alcohol (heneicosan-1-ol), behenyl alcohol (docosan-1-ol), (9 Z )-Octadec-9-en-1-ol (oleyl alcohol), (9 E )-Octadec-9-en-1-ol (elaidyl alcohol), (9 Z 12 Z )-Octadeca-9,12-dien-1-ol (linoleyl alcohol), (9 Z 12 Z 15 Z )-Octadeca-9,12,15-trien-1-ol (linolenoyl alcohol), gadoleyl alcohol ((9 Z )-Eicos-9-en-1-ol), arachidone alcohol ((5 Z 8 Z ,11 Z 14 Z )-Eicosa-5,8,11,14-tetraen-1-ol), erucyl alcohol ((13 Z)-Docos-13-en-1-ol), brassidyl alcohol ((13E)-docosen-1-ol), 2-octyl-dodecanol, 2-hexyl-dodecanol and / or 2-butyl-dodecanol.

[0096] In a further preferred embodiment, a method according to the invention is characterized in that the second agent (b) comprises one or more C 12 -C 30 fatty alcohols (b2) from the group consisting of Dodecan-1-ol (dodecyl alcohol, lauryl alcohol), tetradecan-1-ol (tetradecyl alcohol, myristyl alcohol), hexadecan-1-ol (hexadecyl alcohol, cetyl alcohol, palmityl alcohol), octadecan-1-ol (octadecyl alcohol, stearyl alcohol), arachyl alcohol (eicosan-1-ol), heneicosyl alcohol (heneicosan-1-ol), Behenyl alcohol (docosan-1-ol), (9 Z )-Octadec-9-en-1-ol (oleyl alcohol), (9 E )-Octadec-9-en-1-ol (elaidyl alcohol), (9 Z 12 Z )-Octadeca-9,12-dien-1-ol (linoleyl alcohol), (9 Z 12 Z 15 Z )-Octadeca-9,12,15-trien-1-ol (linolenoyl alcohol), gadoleyl alcohol ((9Z )-Eicos-9-en-1-ol), arachidone alcohol ((5 Z 8 Z ,11 Z 14 Z )-Eicosa-5,8,11,14-tetraen-1-ol), erucyl alcohol ((13 Z )-Docos-13-en-1-ol), brassidyl alcohol ((13 E )-Docosen-1-ol), 2-octyl-dodecanol, 2-hexyl-dodecanol and / or 2-butyl-dodecanol.

[0097] It has proven to be particularly advantageous to use one or more C 12 -C 30 fatty alcohols (b2) in very specific quantity ranges.

[0098] It is particularly preferred if the agent (b) contains one or more C 12 -C 30 fatty alcohols (b2) in a total amount of 2.0 to 50.0 wt.%, preferably 3.0 to 30.0 wt.%, more preferably 4.0 to 20.0 wt.%, even more preferably 5.0 to 15.0 wt.% and most preferably 5.0 to 10.0 wt.%.

[0099] Furthermore, as a particularly preferred fatty component (b2), the composition (b) may also contain at least one C12-C30 fatty acid triglyceride, one C12-C30 fatty acid monoglyceride, and / or one C12-C30 fatty acid diglyceride. For the purposes of the present invention, a C12-C30 fatty acid triglyceride is understood to be the triester of the trihydric alcohol glycerol with three equivalents of fatty acid. Both structurally identical and different fatty acids within a triglyceride molecule may participate in the esterification.

[0100] According to the invention, fatty acids are understood to be saturated or unsaturated, unbranched or branched, unsubstituted or substituted C12-C30 carboxylic acids. Unsaturated fatty acids can be monounsaturated or polyunsaturated. In an unsaturated fatty acid, its C12-C30 double bond(s) can have a cis or trans configuration.

[0101] Fatty acid triglycerides are characterized by their particular suitability, in which at least one of the ester groups starting from glycerol is formed with a fatty acid selected from dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [( Z )-6-Octadecenoic acid], Palmitoleic acid [(9Z)-Hexadec-9-enoic acid], Oleic acid [(9Z)-Octadec-9-enoic acid], Elaidic acid [(9E)-Octadec-9-enoic acid], Erucic acid [(13Z)-Docos-13-enoic acid], Linoleic acid [(9Z, 12Z)-Octadeca-9,12-dienoic acid, Linolenic acid [(9Z,12Z,15Z)-Octadeca-9,12,15-trienoic acid, Elaeostearic acid [(9Z,11E,13E)-Octadeca-9,11,3-trienoic acid], Arachidonic acid [(5Z,8Z,11Z,14Z)-Icosa-5,8,11,14-tetraenoic acid] and / or Nervonic acid [(15Z)-Tetracos-15-enoic acid].

[0102] The fatty acid triglycerides can also be of natural origin. The fatty acid triglycerides or mixtures thereof occurring in soybean oil, peanut oil, olive oil, sunflower oil, macadamia nut oil, moringa oil, apricot kernel oil, marula oil and / or optionally hydrogenated castor oil are particularly suitable for use in the product according to the invention.

[0103] A C12-C30 fatty acid monoglyceride is defined as the monoester of the trihydric alcohol glycerol with one equivalent of fatty acid. Either the central hydroxyl group of glycerol or the terminal hydroxyl group of glycerol can be esterified with the fatty acid.

[0104] C12-C30 fatty acid monoglycerides are characterized by their particular suitability, in which a hydroxyl group of the glycerol is esterified with a fatty acid, the fatty acids being selected from dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [(Z)-6-octadecenoic acid], palmitoleic acid [(9Z)-hexadec-9-enoic acid], oleic acid [(9Z)-octadec-9-enoic acid], elaidic acid [(9E)-octadec-9-enoic acid], erucic acid [(13Z)-docos-13-enoic acid], linoleic acid [(9Z, 12Z)-Octadeca-9,12-dienoic acid, linolenic acid [(9Z,12Z,15Z)-Octadeca-9,12,15-trienoic acid, elaeostearinic acid [(9Z,11E,13E)-Octadeca-9,11,3-trienoic acid], arachidonic acid [(5Z,8Z,11Z,14Z)-Icosa-5,8,11,14-tetraenoic acid] or nervonic acid [(15Z)-tetracos-15-enoic acid].

[0105] A C12-C30 fatty acid diglyceride is defined as the diester of the trihydric alcohol glycerol with two equivalents of fatty acid. Either the central and one terminal hydroxyl group of the glycerol can be esterified with two equivalents of fatty acid, or both terminal hydroxyl groups of the glycerol can be esterified with one fatty acid each. The glycerol can be esterified with either two structurally identical or two different fatty acids.

[0106] Fatty acid diglycerides are characterized by their particular suitability, in which at least one of the ester groups starting from glycerol is formed with a fatty acid selected from dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [( Z)-6-Octadecenoic acid], Palmitoleic acid [(9Z)-Hexadec-9-enoic acid], Oleic acid [(9Z)-Octadec-9-enoic acid], Elaidic acid [(9E)-Octadec-9-enoic acid], Erucic acid [(13Z)-Docos-13-enoic acid], Linoleic acid [(9Z, 12Z)-Octadeca-9,12-dienoic acid, Linolenic acid [(9Z,12Z,15Z)-Octadeca-9,12,15-trienoic acid, Elaeostearic acid [(9Z,11E,13E)-Octadeca-9,11,3-trienoic acid], Arachidonic acid [(5Z,8Z,11Z,14Z)-Icosa-5,8,11,14-tetraenoic acid] and / or Nervonic acid [(15Z)-Tetracos-15-enoic acid].

[0107] Particularly good results were obtained when composition (B) contained at least one C12-C30 fatty acid monoglyceride selected from the monoesters of glycerol with one equivalent fatty acid from the group consisting of dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [( Z)-6-Octadecenoic acid], Palmitoleic acid [(9Z)-Hexadec-9-enoic acid], Oleic acid [(9Z)-Octadec-9-enoic acid], Elaidic acid [(9E)-Octadec-9-enoic acid], Erucic acid [(13Z)-Docos-13-enoic acid], Linoleic acid [(9Z, 12Z)-Octadeca-9,12-dienoic acid, Linolenic acid [(9Z,12Z,15Z)-Octadeca-9,12,15-trienoic acid, Elaeostearic acid [(9Z,11E,13E)-Octadeca-9,11,3-trienoic acid], Arachidonic acid [(5Z,8Z,11Z,14Z)-Icosa-5,8,11,14-tetraenoic acid] and / or Nervonic acid [(15Z)-Tetracos-15-enoic acid].

[0108] In a particularly preferred embodiment, a method according to the invention is characterized in that the second agent (b) contains at least one C 12 -C 30 fatty acid monoglyceride (b2) which is selected from the monoesters of glycerol with one equivalent fatty acid from the group consisting of dodecanoic acid, tetradecanoic acid, hexadecanoic acid, tetracosanoic acid, octadecanoic acid, eicosanoic acid and / or docosanoic acid.

[0109] The rate of film formation originating from the C1-C6 alkoxy silanes can also be significantly influenced by selecting appropriate amounts of C12-C30 fatty acid mono-, C12-C30 fatty acid di-, and / or C12-C30 fatty acid triglycerides. For this reason, it has proven particularly advantageous to use one or more C12-C30 fatty acid mono-, C12-C30 fatty acid di-, and / or C12-C30 fatty acid triglycerides (b2) in very specific amounts in the average (b).

[0110] With regard to solving the problem set out in the invention, it has proven to be particularly advantageous if the agent (b) - based on the total weight of the agent (b) - contained one or more C 12 -C 30 fatty acid mono-, C 12 -C 30 fatty acid di- and / or C 12 -C 30 fatty acid triglycerides (b2) in a total amount of 0.1 to 20.0 wt.%, preferably 0.3 to 15.0 wt.%, more preferably 0.5 to 10.0 wt.% and most preferably 0.8 to 5.0 wt.%.

[0111] In a particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) - based on the total weight of the agent (b) - contains one or more C 12 -C 30 fatty acid mono-, C 12 -C 30 fatty acid di- and / or C 12 -C 30 fatty acid triglycerides (b2) in a total amount of 0.1 to 20.0 wt.%, preferably 0.3 to 15.0 wt.%, more preferably 0.5 to 10.0 wt.% and most preferably 0.8 to 5.0 wt.%.

[0112] The C12-C30 fatty acid mono-, C12-C30 fatty acid di- and / or C12-C30 fatty acid triglycerides can be used as the sole fat components (b2) in the composition (b). However, it is particularly preferred to incorporate at least one C12-C30 fatty acid mono-, C12-C30 fatty acid di- and / or C12-C30 fatty acid triglyceride in combination with at least one C12-C30 fatty alcohol into the composition (b).

[0113] Furthermore, as a particularly preferred fatty component (b2), the substance (b) may also contain at least one hydrocarbon.

[0114] Hydrocarbons are compounds consisting exclusively of carbon and hydrogen atoms, with 8 to 80 carbon atoms. Particularly preferred in this context are aliphatic hydrocarbons such as mineral oils, liquid paraffin oils (e.g., paraffinum liquidum or paraffinum perliquidum), isoparaffin oils, semi-solid paraffin oils, paraffin waxes, hard paraffin (paraffinum solidum), petrolatum, and polydecenes.

[0115] Liquid paraffin oils (paraffinum liquidum and paraffinum perliquidum) have proven particularly suitable in this context. Paraffinum liquidum, also known as white oil, is especially preferred as the hydrocarbon. Paraffinum liquidum is a mixture of purified, saturated, aliphatic hydrocarbons, consisting largely of hydrocarbon chains with a carbon chain distribution of 25 to 35 carbon atoms.

[0116] Particularly good results were obtained when the agent (b) contained at least one hydrocarbon (b2) selected from the group of mineral oils, liquid paraffin oils, isoparaffin oils, semi-solid paraffin oils, paraffin waxes, hard paraffin (Paraffinum Solidum), petrolatum and polydecenes.

[0117] In a particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one fatty component (b2) from the group of hydrocarbons.

[0118] It has proven to be particularly advantageous to use one or more hydrocarbons in very specific quantity ranges on average (b).

[0119] With regard to solving the problem according to the invention, it has proven to be particularly advantageous if the agent (b) - based on the total weight of the agent (b) - contained one or more hydrocarbons (b2) in a total amount of 0.5 to 20.0 wt.%, preferably 1.0 to 15.0 wt.%, more preferably 1.5 to 10.0 wt.% and most preferably 2.0 to 8.0 wt.%.

[0120] In a particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) - based on the total weight of the agent (b) - contains one or more hydrocarbons (b2) in a total amount of 0.5 to 20.0 wt.%, preferably 1.0 to 15.0 wt.%, more preferably 1.5 to 10.0 wt.% and most preferably 2.0 to 8.0 wt.%.

[0121] The hydrocarbon(s) can be used as the sole fat component(s) (b2) in the composition (b). However, it is particularly preferred to incorporate at least one hydrocarbon in combination with at least one other component into the composition (b).

[0122] The composition (b) most preferably contains at least one fatty component (b2) from the group of C 12 -C 30 fatty alcohols and at least one further fatty component from the group of hydrocarbons. Color-giving compound (b3) in the average (b)

[0123] As a third essential component of the invention, the agent (b) used in the method according to the invention contains at least one color-imparting compound (b3).

[0124] For the purposes of this invention, coloring compounds are understood to be substances capable of imparting color to the keratin material. Particularly suitable coloring compounds can be selected from the group consisting of pigments, direct dyes, photochromic dyes, and thermochromic dyes.

[0125] In a further preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one color-imparting compound (b3) from the group consisting of pigments, direct dyes, photochromic dyes and thermochromic dyes.

[0126] For the purposes of this 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.

[0127] Suitable color pigments can be of inorganic and / or organic origin.

[0128] In a preferred embodiment, a means (b) according to the invention is characterized in that it contains at least one color-imparting compound (b3) from the group of inorganic and / or organic pigments.

[0129] Preferred color pigments are selected from synthetic or natural inorganic pigments. Inorganic color 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 color pigments.

[0130] 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 color 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 77510) and / or carmine (cochineal).

[0131] Colored pearlescent pigments are also particularly preferred according to the invention. 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 the pearlescent pigments in combination with metal oxides, the mica, predominantly muscovite or phlogopite, is coated with a metal oxide.

[0132] As an alternative to natural mica, synthetic mica coated with one or more metal oxides can also be used as a pearlescent pigment. Particularly favored pearlescent pigments are based on natural or synthetic mica and coated with one or more of the aforementioned metal oxides. The color of the respective pigments can be varied by changing the thickness of the metal oxide layer(s).

[0133] In a further preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one coloring compound (b3) from the group of inorganic pigments, which is preferably 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 colored pigments based on mica or micaceous oxide, which are coated with at least one metal oxide and / or one metal oxychloride.

[0134] In a further preferred embodiment, the agent (b) used in the method according to the invention is characterized in that it contains at least one coloring compound (b3) from the group of pigments selected from mica- or micaceous-based pigments 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).

[0135] Examples of particularly suitable color pigments are available commercially under the trade names Rona ®< , Colorona ®< , Xirona ®< , Dichrona ®< and Timiron ®< from Merck, Ariabel ®< and Unipure ®< from Sensient, Prestige ®< from Eckart Cosmetic Colors and Sunshine ®< from Sunstar.

[0136] Particularly favored color pigments with the trade name Colorona ® include, for example: Colorona Copper, 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) ,

[0137] Other particularly preferred color pigments with the trade name Xirona® include, for example: Xirona Golden Sky, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Caribbean Blue, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, Tin Oxide Dioxide), Tin Oxide.

[0138] Furthermore, particularly preferred color 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

[0139] In a further embodiment, the agent (b) according to the invention can also contain one or more color-imparting compounds (b3) from the group of organic pigments.

[0140] The organic pigments according to the invention are correspondingly insoluble organic dyes or color 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.

[0141] 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.

[0142] In a further particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one coloring compound (b3) from the group of organic pigments, preferably 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 and / or CI 75470.

[0143] 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.

[0144] For example, alizarin lacquer can be used as a colored lacquer.

[0145] Due to their excellent light and temperature resistance, the use of the aforementioned pigments in the agent (b) of the process according to the invention is particularly preferred. Furthermore, it is preferred if the pigments used have a specific particle size. Therefore, according to the invention, it is advantageous if the at least one pigment has a mean particle size D50 of 1.0 to 50 µm, preferably of 5.0 to 45 µm, more preferably of 10 to 40 µm, and particularly of 14 to 30 µm. The mean particle size D50 can be determined, for example, using dynamic light scattering (DLS).

[0146] The coloring compounds (b3), in particular the coloring compounds from the group of pigments, constitute the third essential ingredient of the composition (b). The pigment(s) are very preferably used in the composition (b) in certain quantity ranges. Particularly good results were obtained when the composition (b) contained one or more pigments (b3) in a total amount of 0.05 to 10.0 wt.%, preferably 0.1 to 7.0 wt.%, more preferably 0.2 to 5.0 wt.%, and most preferably 0.3 to 3.0 wt.%, based on the total weight of the composition (b).

[0147] In a further particularly preferred embodiment, a means according to the invention is characterized in that the means (b) - based on the total weight of the means (b) - contains one or more pigments (b3) in a total amount of 0.05 to 10.0 wt.%, preferably 0.1 to 7.0 wt.%, more preferably 0.2 to 5.0 wt.% and most preferably 0.3 to 3.0 wt.%.

[0148] The coloring agents (b) used in the process according to the invention can 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 form the color. Typical direct dyes are nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, triarylmethane dyes, or indophenols.

[0149] 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 1.0 g / L.

[0150] Direct-drawing dyes can be divided into anionic, cationic, and nonionic direct-drawing dyes.

[0151] In a further embodiment, a method according to the invention is characterized in that the agent (b) contains at least one color-imparting compound (b3) from the group of anionic, non-ionic and cationic direct dyes.

[0152] Geeignete kationische direktziehende Farbstoffe sind beispielsweise Basic Blue 7, Basic Blue 26, HC Blue 16, Basic Violet 2 und 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.

[0153] Examples of nonionic direct-drawing dyes include 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.

[0154] 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 present in deprotonated form and are neutralized with corresponding stoichiometric equivalents of cations to maintain electroneutrality. Acid dyes according to the invention can also be used in the form of their sodium salts and / or potassium salts.

[0155] 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 1.0 g / L.

[0156] 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.

[0157] 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.

[0158] In a further embodiment, a method for dyeing keratinous material is characterized in that the agent (b) contains at least one anionic direct dye (b3) 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).

[0159] Suitable acid dyes can be, for example, one or more compounds selected from the following group: 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 (CI14720), 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.

[0160] The water solubility of anionic direct-acting dyes can be determined, for example, as follows. 0.1 g of the anionic direct-acting dye is placed in a beaker. A magnetic stir bar is added. Then, 100 ml of water is added. This 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 undissolved dye remains, the amount of water is increased—for example, in 10 ml increments. Water is added until the dye is completely dissolved. If the dye-water mixture cannot be visually inspected due to the high intensity of the dye, the mixture is filtered. If some undissolved dye remains on the filter paper, the solubility test is repeated 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 1.0 g / L.

[0161] 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).

[0162] Acid Yellow 3 is a mixture of the sodium salts of mono- and sisulfonic acids of 2-(2-quinolyl)-1H-indene-1,3(2H)-dione and has a water solubility of 20 g / L (25 °C).

[0163] 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).

[0164] 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.

[0165] 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).

[0166] 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 diantrium salt of 5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulfonate; its water solubility is 2.5 g / L (25 °C).

[0167] 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).

[0168] 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).

[0169] In a further embodiment, an inventive method is therefore characterized in that the agent (b) contains at least one direct drawing dye (b3), which is 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.,

[0170] The direct dye(s) can be used in varying amounts in the agent (b) depending on the desired color intensity. Good results were obtained when the agent (b) – based on the total weight of the agent (b) – contains one or more direct dyes (b3) in a total amount of 0.01 to 10.0 wt.%, preferably 0.1 to 8.0 wt.%, more preferably 0.2 to 6.0 wt.%, and most preferably 0.5 to 4.5 wt.%.

[0171] Furthermore, the agent (b) can also contain at least one photochromic or thermochromic dye as a coloring compound (b3).

[0172] Photochromic dyes are dyes that react to irradiation with UV light (sunlight or black light) with a reversible change in hue. The UV light alters the chemical structure of the dyes and thus their absorption behavior (photochromism).

[0173] Thermochromic dyes are dyes that react to temperature changes with a reversible change in hue. The temperature change alters the chemical structure of the dyes and thus their absorption behavior (thermochromism).

[0174] The agent (b) can contain – based on the total weight of the agent (b) – one or more photochromic dyes (b3) in a total amount of 0.01 to 10.0 wt.%, preferably 0.1 to 8.0 wt.%, more preferably 0.2 to 6.0 wt.% and most preferably 0.5 to 4.5 wt.%

[0175] The composition (b) may contain – based on the total weight of the composition (b) – one or more thermochromic dyes (b3) in a total amount of 0.01 to 10.0 wt.%, preferably 0.1 to 8.0 wt.%, more preferably 0.2 to 6.0 wt.% and most preferably 0.5 to 4.5 wt.% Surfactants on average (b)

[0176] Due to its water (b1) and fat (b2) content, the product (b) exists in the form of an emulsion. To further optimize the formation of the emulsion, it has proven particularly advantageous to include at least one surfactant in the product (b).

[0177] The agent (b) therefore particularly preferably contains at least one additional surfactant.

[0178] In a further particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one surfactant.

[0179] The term surfactants (T) refers to surface-active substances that form adsorption layers on surfaces and interfaces or can aggregate in bulk phases to form micelle colloids or lyotropic mesophases. 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 hydrophobic residue and a positively charged hydrophilic group; and nonionic surfactants, which have no charges but strong dipole moments and are highly hydrated in aqueous solution.

[0180] In a particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one non-ionic surfactant (b4).

[0181] Non-ionic surfactants contain, for example, a polyol group, a polyalkylene glycol ether group, or a combination of polyol and polyglycol ether groups as their hydrophilic group. Examples of such compounds are... Addition products of 2 to 50 mol of ethylene oxide and / or 0 to 5 mol of propylene oxide to linear and branched fatty alcohols with 6 to 30 carbon atoms, the fatty alcohol polyglycol ethers or the fatty alcohol polypropylene glycol ethers or mixed fatty alcohol polyethers; addition products of 2 to 50 mol of ethylene oxide and / or 0 to 5 mol of propylene oxide to linear and branched fatty acids with 6 to 30 carbon atoms, the fatty acid polyglycol ethers or the fatty acid polypropylene glycol ethers or mixed fatty acid polyethers; addition products of 2 to 50 mol of ethylene oxide and / or 0 to 5 mol of propylene oxide to linear and branched alkylphenols with 8 to 15 carbon atoms in the alkyl group, the alkylphenol polyglycol ethers or the alkyl polypropylene glycol ethers, or mixed Hydroxyphenol polyethers, end-capped addition products of 2 to 50 mol of ethylene oxide and / or 0 to 5 mol of propylene oxide to linear and branched fatty alcohols with 8 to 30 carbon atoms, with a methyl or C2-C6 alkyl group.fatty acids with 8 to 30 carbon atoms and alkylphenols with 8 to 15 carbon atoms in the alkyl group, such as the types available under the trade names Dehydol® LS, Dehydol® LT (Cognis), C12-C30 fatty acid mono- and diesters of adsorption products of 1 to 30 mol of ethylene oxide to glycerol, adsorption products of 5 to 60 mol of ethylene oxide to castor oil and hydrogenated castor oil, polyol fatty acid esters, such as the trade product Hydagen® HSP (Cognis) or Sovermol® types (Cognis), alkoxylated triglycerides, alkoxylated fatty acid alkyl esters of the formula (Tnio-1)R1CO-(OCH2CHR2)wOR3(Tnio-1) in the R 1< CO for a linear or branched, saturated and / or unsaturated acyl group with 6 to 22 carbon atoms, R 2< for hydrogen or methyl, R 3< for linear or branched alkyl groups with 1 to 4 carbon atoms and w for numbers from 1 to 20, amine oxides, hydroxy mixed ethers,as described, for example, in DE-OS 19738866, sorbitan fatty acid esters and adsorption products of ethylene oxide to sorbitan fatty acid esters such as polysorbates, sugar fatty acid esters and adsorption products of ethylene oxide to sugar fatty acid esters, adsorption products of ethylene oxide to fatty acid alkanolamides and fatty amines, sugar surfactants of the type of alkyl and alkenyl oligoglycosides according to formula (E4-II), R 4< O-[G] p (Tnio-2) where R 4< represents an alkyl or alkenyl residue with 4 to 22 carbon atoms, G represents a sugar residue with 5 or 6 carbon atoms, and p represents numbers from 1 to 10. They can be obtained by the relevant methods of preparative organic chemistry. The alkyl and alkenyl oligoglycosides can be derived from aldoses or ketoses with 5 or 6 carbon atoms, preferably from glucose,The preferred alkyl and / or alkenyl oligoglycosides are thus alkyl and / or alkenyl oligoglycosides. The index p in the general formula (Tnio-2) indicates the degree of oligomerization (DP), i.e., the distribution of mono- and oligoglycosides, and represents a number between 1 and 10. While p in a single molecule must always be an integer and can primarily take the values ​​p = 1 to 6, the value p for a specific alkyl oligoglycoside is an analytically determined calculated quantity, which usually represents a fraction. Preferably, alkyl and / or alkenyl oligoglycosides with an average degree of oligomerization p of 1.1 to 3.0 are used. From an application-related perspective, alkyl and / or alkenyl oligoglycosides with a degree of oligomerization of less than 1.7, and particularly between 1.2 and 1.4, are preferred. The alkyl or alkenyl group R< 4< can differ from primary alcohols with oligomerizations of 4 to 11,preferably derived from 8 to 10 carbon atoms. Typical examples are butanol, capron alcohol, caprylic alcohol, capric alcohol, and undecyl alcohol, as well as their technical mixtures, such as those obtained, for example, during the hydrogenation of technical fatty acid methyl esters or during the hydrogenation of aldehydes from Roelen's oxo synthesis. Alkyl oligoglucosides of chain length C8-C10 (DP = 1 to 3), which are obtained as foreshots during the distillative separation of technical C8-C18 coconut fatty alcohol and may be contaminated with less than 6 wt% C12 alcohol, as well as alkyl oligoglucosides based on technical C9 / 11 oxo alcohols (DP = 1 to 3), are preferred. The alkyl or alkenyl group R 15< can also be derived from primary alcohols with 12 to 22, preferably 12 to 14 carbon atoms. Typical examples are lauryl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, and oleyl alcohol.Elaidyl alcohol, petroselinyl alcohol, arachiyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, brassidyl alcohol, and their technical mixtures, which can be obtained as described above. Preferably, alkyl oligoglucosides based on hydrogenated C12 / 14 coconut alcohol with a DP of 1 to 3 are used. Sugar surfactants of the fatty acid N-alkyl polyhydroxyalkylamide type, a nonionic surfactant of the formula (Tnio-3), R5<CO-NR6<-[Z] (Tnio-3) in which R5<CO represents an aliphatic acyl group with 6 to 22 carbon atoms, R6< represents hydrogen, an alkyl or hydroxyalkyl group with 1 to 4 carbon atoms, and [Z] represents a linear or branched polyhydroxyalkyl group with 3 to 12 carbon atoms and 3 to 10 hydroxyl groups. Fatty acid N-alkylpolyhydroxyalkylamides are well-known substances that are usually produced by reductive amination of a reducing sugar with ammonia,Fatty acid N-alkylpolyhydroxyalkylamides can be obtained by reacting an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester, or a fatty acid chloride. Preferably, the fatty acid N-alkylpolyhydroxyalkylamides are derived from reducing sugars with 5 or 6 carbon atoms, in particular from glucose. The preferred fatty acid N-alkylpolyhydroxyalkylamides are therefore fatty acid N-alkylglucamides, as represented by the formula (Tnio-4): R 7< CO-(NR 8< ) -CH 2 - [CH(OH)] 4 - CH 2 OH (Tnio-4). Preferably, the fatty acid N-alkylpolyhydroxyalkylamides used are glucamides of the formula (Tnio-4), in which R 8< represents hydrogen or an alkyl group and R 7< CO represents the acyl group of caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid.Behenic acid or erucic acid, or their technical mixtures, are preferred. Particularly preferred are fatty acid N-alkylglucamides of the formula (Tnio-4), which are obtained by reductive amination of glucose with methylamine and subsequent acylation with lauric acid or C12 / 14 coconut fatty acid, or a corresponding derivative. Furthermore, the polyhydroxyalkylamides can also be derived from maltose and palatinose.

[0182] The sugar surfactants in the compositions used according to the invention may preferably be present in amounts of 0.1–20% by weight, based on the total composition. Amounts of 0.5–15% by weight are preferred, and amounts of 0.5–7.5% by weight are particularly preferred.

[0183] Other typical examples of non-ionic surfactants are fatty acid amide polyglycol ethers, fatty amine polyglycol ethers, mixed ethers or mixed formals, protein hydrolysates (especially plant-based products based on wheat) and polysorbates.

[0184] Preferred non-ionic surfactants include alkylene oxide adsorption products to saturated linear fatty alcohols and fatty acids, each containing 2 to 30 moles of ethylene oxide per mole of fatty alcohol or fatty acid, as well as sugar surfactants. Preparations with excellent properties are also obtained when they contain fatty acid esters of ethoxylated glycerol as non-ionic surfactants.

[0185] These compounds are characterized by the following parameters. The alkyl group R contains 6 to 22 carbon atoms and can be either linear or branched. Primary linear groups and 2-methyl-branched aliphatic groups are preferred. Examples of such alkyl groups are 1-octyl, 1-decyl, 1-lauryl, 1-myristyl, 1-cetyl, and 1-stearyl. 1-Octyl, 1-decyl, 1-lauryl, and 1-myristyl are particularly preferred. When using so-called "oxo alcohols" as starting materials, compounds with an odd number of carbon atoms in the alkyl chain predominate.

[0186] The compounds with alkyl groups used as surfactants can each be a single, homogeneous substance. However, it is generally preferred to start with native plant or animal raw materials for their production, resulting in mixtures of substances with varying alkyl chain lengths, depending on the specific raw material.

[0187] For surfactants that represent addition products of ethylene and / or propylene oxide to fatty alcohols or derivatives of these addition products, both products with a "normal" homolog distribution and those with a narrowed homolog distribution can be used. A "normal" homolog distribution refers to mixtures of homologs obtained from the reaction of fatty alcohol and alkylene oxide using alkali metals, alkali metal hydroxides, or alkali metal alkoxides as catalysts. Narrowed homolog distributions, on the other hand, are obtained when, for example, hydrotalcites, alkaline earth metal salts of ether carboxylic acids, alkaline earth metal oxides, hydroxides, or alkoxides are used as catalysts. The use of products with a narrowed homolog distribution may be preferable.

[0188] Particularly good results were obtained when an agent (b) containing at least one ethoxylated fatty alcohol with a degree of ethoxylation of 10 to 40 was used in the process according to the invention.

[0189] In a further particularly preferred embodiment, a method according to the invention is characterized in that the agent (b) contains at least one non-ionic surfactant (b4) of formula (TI), wherein Rb represents a saturated or unsaturated, unbranched or branched C 8 -C 24 alkyl group, preferably a saturated, unbranched C 16 - to C 18 alkyl group, and m represents an integer from 10 to 40, preferably an integer from 20 to 35 and particularly preferably the number 30.

[0190] One particularly suitable nonionic surfactant of this type is ceteareth-30. Ceteareth-30 is a mixture of cetyl alcohol and stearyl alcohol, each ethoxylated with 30 units of ethylene oxide. This mixture of cetyl alcohol and stearyl alcohol is referred to as cetearyl alcohol. Ceteareth-30 has the CAS number 68439-49-6 and is available, for example, from BASF under the trade name Eumulgin B3.

[0191] The non-ionic surfactants, in particular the non-ionic surfactants of formula (TI), are preferably used in the appropriate quantity ranges in the composition (b). Thus, the composition (b) can contain – based on the total weight of the composition (b) – one or more non-ionic surfactants in a total amount of 0.1 to 20 wt.%, preferably 0.2 to 10 wt.%, more preferably 0.3 to 5 wt.%, and most preferably 0.4 to 2.5 wt.%. Abstaining from aminosilicones in the medium (b)

[0192] In step (3) of the inventive method, the agents (a) and (b) are mixed and in this way a ready-to-use dye is produced, which is then applied to the hair (step (4)), left to act (step (5)) and rinsed out again (step (6)).

[0193] As previously described, the agent (a) is preferably the concentrate of an aminosilicone (a1), which comes into contact with the coloring compounds (i.e., the pigments) (b3) only shortly before application. Mixing initiates the reaction or interaction of the aminosilicones (a1) with the pigments (b3), which, under the application conditions, ultimately leads to a conglomeration, deposition, or aggregation of (a1) and (b3), thereby presumably immobilizing the pigments on the surface of the keratin fibers.

[0194] To achieve a homogeneous color result on the keratin fiber, it has proven essential that this interaction of (a1) and (b3) is initiated only shortly before or during the dyeing process and that co-storage of (a1) and (b3) is avoided. For this reason, it has also proven particularly advantageous if the agent (b) itself does not contain aminosilicones.

[0195] In a further explicitly preferred embodiment, a method according to the invention is characterized in that the total content of amino-functionalized silicone polymers in the agent (b) - based on the total weight of the agent (b) - is below 1.0 wt.%, preferably below 0.5 wt.%, more preferably below 0.1 wt.% and most preferably below 0.01 wt.%.

[0196] In other words, in a further explicitly preferred embodiment, a method according to the invention is characterized in that the agent (b) - based on the total weight of the agent (a) - contains one or more amino-functionalized silicone polymers in a total amount of 0 to 1.0 wt.%, preferably 0 to 0.5 wt.%, more preferably 0 to 0.1 wt.% and most preferably 0 to 0.01 wt.%.

[0197] It is explicitly and especially preferred if the agent (b) does not contain amino-functionalized silicone polymers. Other optional ingredients in the products (a) and / or (b)

[0198] In addition to the components essential to the invention already described, the agents (a) and / or (b) may also contain further optional ingredients.

[0199] For example, the agents (a) and / or (b) may contain a film-forming polymer. The film-forming polymer may be selected, for example, from the group consisting of polyvinylpyrrolidone (PVP), vinylpyrrolidone / vinyl acetate copolymers, vinylpyrrolidone / styrene copolymers, vinylpyrrolidone / ethylene copolymers, vinylpyrrolidone / propylene copolymers, vinylpyrrolidone / vinyl caprolactam copolymers, vinylpyrrolidone / vinylformamide copolymers and / or vinylpyrrolidone / vinyl alcohol copolymers, with polyvinylpyrrolidone (PVP) being particularly preferred.

[0200] Other suitable film-forming polymers may be selected from the group of copolymers of acrylic acid, copolymers of methacrylic acid, homopolymers or copolymers of acrylic acid esters, homopolymers or copolymers of methacrylic acid esters, homopolymers or copolymers of acrylic acid amides, homopolymers or copolymers of methacrylic acid amides, copolymers of vinylpyrrolidone, copolymers of vinyl alcohol, copolymers of vinyl acetate, homopolymers or copolymers of ethylene, homopolymers or copolymers of propylene, homopolymers or copolymers of styrene, polyurethanes, polyesters and / or polyamides.

[0201] Film-forming polymers, in particular those selected from the group of synthetic polymers, polymers obtainable by radical polymerization or natural polymers, have proven to be well suited.

[0202] Other particularly suitable film-forming 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 C1-C20 alkyl group, an aryl group or a C2-C10 hydroxyalkyl group.

[0203] Other film-forming 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.

[0204] Other film-forming polymers may be selected from the homo- or copolymers of (meth)acrylamide; N-alkyl-(meth)acrylamides, in particular those with C2-C18 alkyl groups, such as N-ethyl-acrylamide, N-tert-butyl-acrylamide, N-octyl-acrylamide; N-di(C1-C4)alkyl-(meth)acrylamide.

[0205] 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.

[0206] 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, distributed by Rohme and Haas. OPT (Acrylates / C12-22 Alkyl methacrylate Copolymer).

[0207] Suitable polymers based on vinyl monomers include, for example, the homo- and copolymers of N-vinylpyrrolidone, vinylcaprolactam, vinyl-(C1-C6-)alkyl-pyrrole, vinyl-oxazole, vinyl-thiazole, vinylpyrimidine, and vinylimidazole.

[0208] 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.

[0209] Suitable polymers based on olefins include, for example, the homo- and copolymers of ethylene, propylene, butene, isoprene and butadiene.

[0210] 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 contain 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".

[0211] In a further embodiment, a method according to the invention is characterized in that the agent (a) and / or (b) contains at least one film-forming polymer 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, 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 Vinylpyrrolidones, 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, polyurethanes, polyesters and / or polyamides.

[0212] The film-forming polymer(s) are preferably used in specific quantity ranges in the compositions (a) and / or (b). In this context, it has proven particularly advantageous for solving the problem according to the invention if the composition (b) contains one or more polymers in a total quantity of 0.1 to 25.0 wt.%, preferably 0.2 to 20.0 wt.%, more preferably 0.5 to 15.0 wt.%, and most preferably 1.0 to 7.0 wt.%, based on the total weight of the composition (b).

[0213] The products may also 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 hydrophobic residue and a positively charged hydrophilic group; and nonionic surfactants, which have no charge but strong dipole moments and are highly hydrated in aqueous solution.

[0214] 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., cocoalkyl-dimethylammonium glycinate), N-acyl-aminopropyl-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.

[0215] 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.

[0216] Particularly preferred ampholytic surfactants are N-cocosalkylaminopropionate, cocosacylaminoethylaminopropionate and C 12 - C 18 - acylsarcosine.

[0217] Furthermore, the products may also 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 include: quaternary ammonium compounds, which may carry one or two alkyl chains with a chain length of 8 to 28 C atoms as hydrophobic residues, quaternary phosphonium salts, substituted with one or more alkyl chains with a chain length of 8 to 28 C atoms, or tertiary sulfonium salts.

[0218] 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. The cationic 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.

[0219] Furthermore, the compositions according to the invention can also contain at least one anionic surfactant. Anionic surfactants are defined as 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.

[0220] 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.

[0221] The products may also contain other active ingredients, excipients, and additives, such as solvents, fatty components like C8-C30 fatty alcohols, C8-C30 fatty acid triglycerides, C8-C30 fatty acid monoglycerides, C8-C30 fatty acid diglycerides, and / or hydrocarbons; polymers; structuring agents such as glucose, maleic acid, and lactic acid; hair-conditioning compounds such as 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; light protectants 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 penetration 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.;

[0222] 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.

[0223] As previously described, composition (a) most preferably consists essentially of the ingredients (a1) and optionally a solvent. Therefore, if composition (a) should contain one of the previously described further optional ingredients, these are most preferably used in composition (a) only in very small quantities. Preparation of the application mixture by mixing agents (a) and (b)

[0224] In step (3) of the process according to the invention, a ready-to-use mixture is produced by mixing the agents (a) and (b). In other words, in this process step, the concentrate (a), i.e., the preferably low-water, highly concentrated mixture of aminosilicone (a1), is mixed with an emulsion, wherein the emulsion comprises the components (b1), (b2) and (b3).

[0225] In principle, different quantities of agent (a) can be mixed with agent (b), so in principle mixing ratios (a) / (b) of 1:400 to 400:1 are conceivable.

[0226] Since the agent (a) is preferably a concentrate, it has proven to be particularly advantageous to use the agent (a) in small quantities and to dilute these with comparatively higher quantities of the dye (b).

[0227] It is particularly preferred if the application mixture is produced by mixing the agents (a) and (b) in the ratio (a) / (b) of 1:5 to 1:200, preferably of 1:10 to 1:150, more preferably of 1:20 to 1:140 and most preferably of 1:40 to 1:110.

[0228] For example, with a ratio (a) / (b) of 1:120, 1 g of agent (a) can be mixed with 120 g of agent (b).

[0229] For example, with a quantity ratio (a) / (b) of 1:100, 1 g of agent (a) can be mixed with 100 g of agent (b).

[0230] For example, with a ratio (a) / (b) of 1:15, 15 g of agent (a) can be mixed with 75 g of agent (b).

[0231] For example, with a ratio (a) / (b) of 1:25, 4 g of agent (a) can be mixed with 100 g of agent (b).

[0232] In a further preferred embodiment, a method according to the invention is characterized by the (3) production of an application mixture by mixing the agents (a) and (b) in the ratio (a) / (b) of 1:5 to 1:200, preferably from 1:10 to 1:150, more preferably from 1:20 to 1:140 and most preferably from 1:40 to 1:110.

[0233] The pH values ​​of compositions (a) and (b) are preferably adjusted such that the application mixture prepared from (a) and (b) also has a neutral to alkaline pH value. Most preferably, the application mixture has an alkaline pH value in the range of 7.0 to 11.5, preferably 8.0 to 11.0, and most preferably 8.5 to 10.5. Under basic conditions, the amino-functionalized silicone polymer (a1) can be dissolved or dispersed particularly well and without protonation.

[0234] In a further preferred embodiment, a method according to the invention is characterized in that the application mixture produced by mixing the agents (a) and (b) has a pH value of 7.0 to 11.5, preferably 8.0 to 11.0, and particularly preferably 8.5 to 10.5.

[0235] To adjust the desired pH value, the agent (a) and / or (b) can contain at least one alkalizing agent. The pH values ​​referred to in the present invention are pH values ​​measured at a temperature of 22°C.

[0236] The alkalizing agents can include, for example, ammonia, alkanolamines and / or basic amino acids.

[0237] The alkanolamines usable in the composition according to the invention are preferably selected from 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.

[0238] According to the invention, particularly preferred alkanolamines are selected from 2-aminoethanol-1-ol and / or 2-amino-2-methylpropan-1-ol. A particularly preferred embodiment is therefore characterized in that the composition according to the invention contains an alkanolamine selected from 2-aminoethanol-1-ol and / or 2-amino-2-methylpropan-1-ol as an alkalizing agent.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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, a composition according to the invention is therefore characterized in that the alkalizing agent is a basic amino acid from the group consisting of arginine, lysine, ornithine, and / or histidine.

[0243] Furthermore, the composition may contain additional alkalizing agents, in particular inorganic alkalizing agents. Inorganic alkalizing agents that can be used according to the invention are preferably selected from the group consisting of sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium phosphate, potassium phosphate, sodium silicate, sodium metasilicate, potassium silicate, sodium carbonate, and potassium carbonate.

[0244] Particularly preferred alkalizing agents are ammonia, 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, 2-amino-2-methylpropan-1,3-diol, arginine, lysine, ornithine, histidine, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium phosphate, potassium phosphate, sodium silicate, sodium metasilicate, potassium silicate, sodium carbonate, and potassium carbonate.

[0245] In a further particularly preferred embodiment, a process according to the invention is characterized in that the dye (a) comprises at least one alkalizing agent from the group consisting of ammonia, 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, 2-amino-2-methylpropan-1,3-diol, arginine, lysine, ornithine, histidine, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium phosphate, potassium phosphate, Contains sodium silicate, sodium metasilicate, potassium silicate, sodium carbonate and potassium carbonate. Applying the application mixture

[0246] In step (4) of the inventive process, the application mixture produced in step (3) is applied to the keratinous material, which is most preferably human hair.

[0247] Preferably, the application mixture is applied to the keratin material (or to the hair) within a period of 1 to 120 minutes, more preferably 1 to 60 minutes, more preferably 1 to 30 minutes and most preferably 1 to 15 minutes after its preparation in step (3).

[0248] In a further preferred embodiment, a method according to the invention is characterized by (4) applying the application mixture to the keratinous material within a period of 1 to 120 minutes, preferably 1 to 60 minutes, more preferably 1 to 30 minutes and most preferably 1 to 15 minutes after its preparation in step (3). Action of the application mixture on the keratin material

[0249] In step (5) of the method according to the invention, the application mixture is allowed to act after its application to the keratinous material. In this context, various exposure times of, for example, 30 seconds to 60 minutes are conceivable.

[0250] A major advantage of the dyeing system according to the invention is that an intense color result can be achieved even in very short periods of time after short exposure times. For this reason, it is advantageous if the application mixture remains on the keratin material for only relatively short periods of time after application, from 30 seconds to 15 minutes, preferably from 30 seconds to 10 minutes, and particularly preferably from 1 to 5 minutes.

[0251] In a further preferred embodiment, a method according to the invention is characterized by (5) the action of the application mixture applied in step (4) on the keratinous material for a period of 30 seconds to 15 minutes, preferably from 30 seconds to 10 minutes, and particularly preferably from 1 to 5 minutes. Rinsing out the application mixture

[0252] Following the application of the mixture to the keratin material, it is finally rinsed off with water in step (6).

[0253] In one embodiment, the application mixture can be rinsed off with water alone, i.e., without the use of a post-treatment agent or shampoo. The application of a post-treatment agent or conditioner in step (6) is also conceivable in principle.

[0254] However, to solve the problem according to the invention and to increase ease of use, it has proven to be particularly preferred to rinse the application mixture in step (6) exclusively with water without the aid of any further after-treatment agent, without shampoo and without conditioner.

[0255] In a further preferred embodiment, a method according to the invention is characterized by (6) rinsing the application mixture exclusively with water. Sequence of procedural steps

[0256] The method according to the invention comprises steps (1) to (6).

[0257] In step (1) the resource (a) is provided, step (2) comprises the provision of the resource (b). These two steps do not necessarily have to occur sequentially, but can also take place simultaneously.

[0258] Step (1) can be performed before step (2), steps (1) and (2) can be performed simultaneously, or step (2) can be performed before step (1).

[0259] If, for example, the user is provided with the agents (a) and (b) in a multi-component packaging unit, both agents are provided simultaneously, and it is left to the user to decide which agent to remove from the packaging first.

[0260] The preparation of an application mixture by mixing agents (a) and (b) in step (3) can only take place after both agents (a) and (b) have been provided.

[0261] The application of the application mixture in step (4) can only take place after its preparation in step (3).

[0262] Similarly, the application of the mixture in step (5) can only take place after it has been applied to the keratin material, and the rinsing of the application mixture in step (6) takes place after it has taken effect in step (5). Examples 1. Formulations

[0263] The following formulations were produced: Agent (a) (Concentrate) (aV1) Comparison (aE1) Invention Unipure Red LC3079, organic pigment CI 15850 1,0 g --- Dow Corning 2-8566 (Siloxanes and Silicones, 3-[(2-Aminoethyl)amino]-2-methylpropyl Me, Di-Me-Siloxane" 1,0 g 1,0 g Total amount of concentrate (a) 2,0 g 1,0 g Means (b) Carrier formulation (bV1) Comparison (bE1) Invention Cetyl alcohol 3,0 g 3,0 g Stearyl alcohol 3,0 g 3,0 g Ceteareth-30 (cetearyl alcohol, ethoxylated 30 EO) 1,5 g 1,5 g Potassium hydroxide, 50% aqueous solution 0,5 g 0,5 g Unipure Red LC3079, organic pigment CI 15850 --- 1,0 g 1,2-Propanediol 10,0 g 10,0 g Water 80 g 80 g Total amount of carrier base (b) 98 g 99 g Comparison (V) Cetyl alcohol 3,0 g Stearyl alcohol 3,0 g Ceteareth-30, (cetearyl alcohol, ethoxylated 30 EO) 1,5 g Potassium hydroxide, 50% aqueous solution 0,5 g Unipure Red LC3079, organic pigment CI 15850 1,0 g 1,2-Propanediol 10,0 g Dow Corning 2-8566 (Siloxanes and Silicones, 3-[(2-Aminoethyl)amino]-2-methylpropyl Me, Di-Me-Siloxane" 1,0 g Water 80 g Total quantity comparison formulation 100 g

[0264] All formulations were placed in a glass container, sealed, and stored at 25°C for 8 weeks. 2. Application

[0265] The following application mixtures (AWM) were prepared from the stored formulations: AWM 1, Comparison AWM 2, Comparison AWM 3, Invention 2 g (aV1) 100 g (V) 1 g (aE1) 98 g (bV1) 99 g (bE1)

[0266] The application mixture AWM 1 was produced by shaking 2 g of the agent (aV1) with 98 g of the agent (bV1) (comparison).

[0267] The application mixture AWM 2 is the comparative formulation (V), which was used as such after storage without further mixing (comparison).

[0268] The application mixture AWM 3 was produced by shaking 1 g of the agent (aE1) with 99 g of the agent (bE1) (invention).

[0269] Each application mixture was applied to hair strands (Kerling, Euronaturhaar white, ratio: 1 g of application mixture per g of hair strand). The application mixture was left on for three minutes. Afterwards, the hair strands were thoroughly rinsed (1 minute) with water, dried, and then visually assessed under a daylight lamp. AWM 1, Comparison AWM 2, Comparison AWM 3, Invention Intensity of coloration high very low high Homogeneity of the coloring low low high

Claims

1. A method for dyeing keratinous material, in particular human hair, comprising the following steps: (1) providing an agent (a), wherein agent (a) contains, based on the total weight of agent (a), less than 10.0 wt.% water and (a1) at least one amino-functionalized silicone polymer, and (2) providing an agent (b), wherein agent (b) contains: (b1) water, and (b2) at least one fatty component, and (b3) at least one coloring compound, (3) preparing an application mixture by mixing agents (a) and (b), (4) applying the application mixture prepared in step (3) to the keratinous material, (5) exposing the keratinous material to the application mixture applied in step (4), and (6) rinsing the application mixture using water.

2. The method according to claim 1, characterized in that agent (a) contains at least one amino-functionalized silicone polymer (a1) having at least one secondary amino group.

3. The method according to one of claims 1 to 2, characterized in that agent (a) contains at least one amino-functionalized silicone polymer (a1) comprising at least one structural unit of formula (Si-amino), where ALK1 and ALK2 represent, independently of one another, a linear or branched, divalent C1-C20 alkylene group.

4. The method according to one of claims 1 to 3, characterized in that agent (a) contains at least one amino-functionalized silicone polymer (a1) comprising structural units of formula (Si-I) and of formula (Si-II).

5. The method according to one of claims 1 to 4, characterized in that agent (a) contains, based on the total weight of agent (a), one or more amino-functionalized silicone polymers (a1) in a total amount of 5 to 100 wt.%, preferably of 25 to 100 wt.%, more preferably of 50 to 100 wt.%, and very particularly preferably of 75 to 100 wt. %.

6. The method according to one of claims 1 to 5, characterized in that agent (a) contains, based on the total weight of agent (a), less than 5.0 wt.%, preferably less than 2.5 wt.%, and very particularly preferably less than 1.0 wt.% water.

7. The method according to one of claims 1 to 6, characterized in that agent (b) contains, based on the total weight of agent (b), 50.0 to 98.0 wt.%, preferably 60.0 to 90.0 wt.%, more preferably 70.0 to 90.0 wt.%, and very particularly preferably 75.0 to 90.0 wt.% water (b1).

8. The method according to one of claims 1 to 7, characterized in that agent (b) contains one or more fatty components (b2) from the group of C12-C30 fatty alcohols, C12-C30 fatty acid triglycerides, C12-C30 fatty acid monoglycerides, C12-C30 fatty acid diglycerides and / or hydrocarbons.

9. The method according to one of claims 1 to 8, characterized in that agent (b) contains one or more C12-C30 fatty alcohols (b2) from the group of dodecan-1-ol, tetradecan-1-ol, hexadecan-1-ol, octadecan-1-ol, eicosan-1-ol, heneicosan-1-ol, docosan-1-ol, (9Z)-octadec-9-en-1-ol, (9E)-octadec-9-en-1-ol, (9Z,12Z)-octadeca-9,12-dien-1-ol, (9Z,12Z,15Z)-octadeca-9,12,15-trien-1-ol, (9Z)-eicos-9-en-1-ol, (5Z,8Z,11Z,14Z)-eicosa-5,8,11,14-tetraen-1-ol, (13Z)-docos-13-en-1-ol), (13E)-docosen-1-ol), 2-octyl-dodecanol, 2-hexyl-dodecanol and / or 2-butyl-dodecanol.

10. The method according to one of claims 1 to 9, characterized in that agent (b) contains at least one coloring compound (b3) from the group of pigments, direct dyes, photochromic dyes and thermochromic dyes.

11. The method according to one of claims 1 to 10, characterized in that agent (b) contains at least one coloring compound (b3) from the group of inorganic pigments preferably 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 mica-based colored pigments which are coated with at least one metal oxide and / or a metal oxychloride.

12. The method according to one of claims 1 to 11, characterized in that agent (b) contains at least one coloring compound (b3) from the group of organic pigments, preferably selected from the group of carmine, quinacridone, phthalocyanine, sorghum, blue pigments having the Color Index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100 or CI 74160, yellow pigments having the Color Index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000 or CI 47005, green pigments having the Color Index numbers CI 61565, CI 61570 or CI 74260, orange pigments having the Color Index numbers CI 11725, CI 15510, CI 45370 or CI 71105, red pigments having 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.

13. The method according to one of claims 1 to 12, characterized in that agent (b) contains, based on the total weight of agent (b), one or more pigments (b3) in a total amount of 0.05 to 10.0 wt.%, preferably 0.1 to 7.0 wt.%, more preferably of 0.2 to 5.0 wt.%, and very particularly preferably of 0.3 to 3.0 wt.%.

14. The method according to one of claims 1 to 13, characterized in that agent (b) contains at least non-ionic surfactant (b4).

15. The method according to one of claims 1 to 14, characterized in that agent (b) contains at least one non-ionic surfactant (b4) of formula (T-I), where Rb represents a saturated or unsaturated, unbranched or branched C8-C24 alkyl group, preferably a saturated, unbranched C16 to C18 alkyl group, and m represents an integer from 10 to 40, preferably an integer from 20 to 35, and particularly preferably the integer 30.

16. The method according to one of claims 1 to 15, characterized by the following step (3) preparing an application mixture by mixing agents (a) and (b) in a ratio (a) / (b) of 1:5 to 1:200, preferably of 1:10 to 1:150, more preferably of 1:20 to 1:140, and very particularly preferably of 1:40 to 1:110.

17. The method according to one of claims 1 to 16, characterized in that the application mixture prepared by mixing agents (a) and (b) has a pH of 7.0 to 11.5, preferably of 8.0 to 11.0, and particularly preferably of 8.5 to 10.5.

18. The method according to one of claims 1 to 17, characterized by the following step (4) applying the application mixture to the keratinous material within a period of 1 to 120 minutes, preferably of 1 to 60 minutes, more preferably 1 to 30 minutes and very particularly preferably of 1 to 15 minutes after it has been prepared in step (3).

19. The method according to one of claims 1 to 18, characterized by the following step (5) exposing the keratinous material to the application mixture applied in step (4) for a period of 30 seconds to 15 minutes, preferably of 30 seconds to 10 minutes, and particularly preferably of 1 to 5 minutes.