WO2007087978A1 - Auxiliary agent for stylishly colouring keratin-containing fibres - Google Patents

Abstract

By means of a method of colouring human hair in which, using a covering sheet with specially marked holes, a number of sections of the hair are specifically selected and then coloured using a colouring agent, it is quickly possible to create sections of hair which are distributed uniformly over the entire head. The special hole markings additionally make it possible for the user to determine the density of the sections of hair. The covering sheet may be used, for example, in the form of a cap.

Description

"Aids for the fashionable color change of keratin-containing fibers"

The present invention relates to a method of dyeing human hair, in which a few strands of the hair are selectively selected using a film with a marked pattern of holes and then subjected to a color change with a color-changing agent. Furthermore, a packaging unit (kit) containing at least color-changing agent, as well as said cover film and a head cover made therefrom is the subject of the invention.

Human hair is today treated in a variety of ways with hair cosmetic preparations. These include, for example, the cleansing of hair with shampoos, the care and regeneration with rinses and cures and the bleaching, dyeing and shaping of the hair with dyes, tinting agents, waving agents and styling preparations. In this case, means for changing or nuancing the color of the head hair play a prominent role. Apart from the bleaching agents that cause an oxidative lightening of the hair by degradation of the natural hair dyes, so in the field of hair coloring essentially four types of hair dyes of importance:

For permanent, intensive colorations with corresponding fastness properties, so-called oxidation colorants are used. Such colorants usually contain oxidation dye precursors, so-called developer components and coupler components. The developer components form the actual dyes under the influence of oxidizing agents or of atmospheric oxygen with one another or with coupling with one or more coupler components. The oxidation dyes are characterized by excellent, long-lasting dyeing results. For naturally acting dyeings but usually a mixture of a larger number of oxidation dye precursors must be used; In many cases, direct dyes are still used for shading. The developer components are usually primary aromatic amines having a further, in the para or ortho position, free or substituted hydroxy or amino group, diaminopyridine derivatives, heterocyclic hydrazones, 4-aminopyrazolone derivatives and 2,4,5,6-tetraaminopyrimidine and its derivatives used ,

Specific representatives are, for example, p-phenylenediamine, p-toluenediamine, 2,4,5,6-tetraaminopyrimidine, p-aminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2- (2,5-) Diaminophenyl) ethanol, 2- (2,5-diaminophenoxy) ethanol, 1-phenyl-3-carboxyamido-4-amino-pyrazolone-5, 4-amino-3-methylphenol, 2-aminomethyl-4-aminophenol, 2 -Hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine, 2,5,6-triamino-4-hydroxypyrimidine and 1,3-N, N'-bis (2-hydroxybenzyl) ethyl) -N, N'-bis (4-aminophenyl) -diamino-propan-2-ol.

As coupler components m-phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones and m-aminophenols are generally used. Suitable coupler substances are, in particular, 1-naphthol, 1,5-dihydroxynaphthalene, 2,7-dihydroxynaphthalene and 1,7-dihydroxynaphthalene, 5-amino-2-methylphenol, m-aminophenol, resorcinol, resorcinol monomethyl ether, m-phenylenediamine, 1 -Phenyl-3-methyl-pyrazolone-5, 2,4-dichloro-3-aminophenol, 1,3-bis (2,4-diaminophenoxy) -propane, 2-chlororesorcinol, 4-chlororesorcinol, 2-chloro-6 -methyl-3-aminophenol, 2-methylresorcinol, 5-methylresorcinol and 2-methyl-4-chloro-5-aminophenol.

For temporary dyeings usually dyeing or tinting agents are used which contain so-called direct drawers as a coloring component. These are dye molecules that grow directly on the hair and do not require an oxidative process to form the color. These dyes include, for example, the henna already known from antiquity for coloring body and hair. These dyeings are generally much more sensitive to shampooing than the oxidative dyeings, so that a much more undesirable nuance shift or even a visible "discoloration" occurs much more quickly.

Finally, further dyeing has received much attention. In this method, precursors of the natural hair dye melanin are applied to the hair; These then form naturally-analogous dyes in the course of oxidative processes in the hair. Such a process with 5,6-dihydroxyindoline as dye precursor was described in EP-B1-530 229. In particular, multiple use of agents with 5,6-dihydroxyindoline, it is possible to reproduce natural hair color to people with graying hair. The dyeing can be done with atmospheric oxygen as the sole oxidant, so that no further oxidizing agent must be used. In persons with original Medium-blond to brown hair, the indoline can be used as the sole dye precursor. On the other hand, satisfactory results can often only be achieved for use in persons with originally red and, in particular, dark to black hair color, by using other dye components, in particular special oxidation dye precursors.

Another way to stain keratin-containing fibers is through the use of stains containing a combination of component

A compounds containing a reactive carbonyl group with component B compounds selected from (a) CH-acidic compounds, (b) compounds having primary or secondary amino group or hydroxy group selected from primary or secondary aromatic amines, nitrogen-containing heterocyclic compounds and aromatic hydroxy compounds, (c) amino acids, (d) from 2 to 9 amino acids constructed oligopeptides. The corresponding dyeing method (referred to below as oxo dyeing) is described, for example, in the publications WO-A1-99 / 18916, WO-A1 -00 / 38638, WO-A1-01 / 34106 and WO-A1-01 / 47483. The resulting dyeings have partially color fastness on the keratin-containing fiber, which are comparable to those of the oxidation dyeing. The Nuancenspektrum achievable with the gentle oxo staining is very broad and the color obtained often has an acceptable brilliance and color depth. The aforementioned components A and B, hereinafter referred to as Oxofarbstoffvorprodukte, are generally not themselves dyes, and are therefore each alone taken not for coloring keratin-containing fibers. In combination, they form dyes in a non-oxidative process. However, it is also possible to use corresponding developer and / or coupler-type oxidation dye precursors with or without the use of an oxidizing agent under compounds of component B. Thus, the oxo staining method can be readily combined with the oxidative staining system.

For brightening keratin-containing fibers so-called bleaching agents are used. The latter contain oxidizing agents which oxidatively act on the natural hair dye melanin and optionally on synthetic fibers present in the fiber and thereby cause a color change and optimally a lightening of the hair color. The fundamentals of the bleaching and oxidative dyeing processes are known to the person skilled in the art and are described in relevant monographs, for example by K. Schrader, Grundlagen und Rezepturen der Kosmetika, 2nd edition, 1989. Alfred Hüthig Verlag, Heidelberg, or W. Umbach (ed.), Cosmetics, 2nd edition, 1995, Georg Thieme Verlag, Stuttgart, New York, described in summary. The fashion conscious consumer either seeks a hairdresser to perform a cosmetic color change of his hair, or will himself make the color change of his hair by self-application of the color changing agents. Self-application places high demands on the consumer, in particular, when selected areas of the hair are to be changed in color. This is the case in particular with a highlight application. Problems with the application of highlights often have a visible effect on the inhomogeneity in the dense density and thus negatively on the overall impression of the staining result. The coloring results are not harmonious and unprofessional.

A harmonious picture of a streaks hairstyle offers the viewer if and when the color accentuated highlights are evenly distributed over the entire head hair area.

A particularly effective aid for self-application is provided by the use of a covering foil of the scalp hair, which is used in particular in the form of a so-called highlighting cap. The cover foil has a hole grid distributed over the surface of the foil or the hood. With another aid in the form of a crochet hook ("Strähnchenzieher") hair strands are pulled through the holes of the hood.These strands of hair are then changed using a corresponding cosmetic product in their color.

However, the application of the Strähnchenhaube especially during self-application is not without disadvantages. The consumer finds it extremely problematic that the holes in the cover foil with the Strähnchenzieher are untargeted only by tasting. Likewise, depending on the desired intensity of the highlighting look, the consumer should be able to uniformly determine the density of the strands over the entire head hair area. The time required for the implementation should also be reduced by a new technique.

It is therefore an object of the present invention to provide a time-saving method which enables the user, in particular in the context of self-application, to uniformly select highlights over the entire scalp area and to change them in color. The final result should be a homogeneous and harmonious color change whose intensity of the highlighting look can be adjusted by deliberately influencing the density of the strands over the entire head hair area.

It has now surprisingly been found that the user comes in a shorter time to a correspondingly improved color change result when the cover sheet according to the invention is used. A first object of the invention is therefore a cover sheet having a distributed over the surface of the film hole pattern in which the holes in alternating rows of holes 1 and rows of holes 2 are arranged, each hole of the hole pattern of the cover sheet visible and / or palpable with a Hole marking selected from one of three different hole markings a, b and c, with the proviso that hole row 1 along a preferential direction is at least 80% of a repetitive hole marking sequence "hole mark a / hole mark b / hole mark a / hole mark b / Hole identification c / hole identification b "and row 2 of holes along the same preferential direction shall contain at least 80% repetitive marking order" hole identification b / hole identification c / hole identification b / hole identification a / hole identification b / hole identification a ".

A row of holes is defined according to the invention as a set of holes extending along an imaginary line either from one point on one edge of the cover sheet along the surface of the cover sheet to another point on an edge of the cover sheet, and / or along the circumference of concentric Triangles, squares, pentagons, etc., to circles or ellipsoids that line up around the point on the surface of the cover sheet. It is inventively preferred if this imaginary line is straight. By definition, an edge marks the end of the surface of the cover sheet.

According to the invention, a preferred direction is to be understood as meaning a direction along the imaginary line of a row of holes.

The holes are preferably round.

The holes of the breadboard preferably have a diameter of 0.1 to 1.25 mm, in particular from 0.1 to 0.75 mm.

The hole spacing is determined from the center of the hole to the center of the adjacent hole along the row of holes. The hole spacing of adjacent holes along the row of holes is preferably in the range of 5 to 20 mm. It is inventively preferred if along each hole row of the hole pattern all adjacent holes have an equidistant hole spacing. It is again preferred if the amount of the distance between two adjacent holes along one of the two rows of holes 1 or 2 is a product of the distance between two adjacent holes along the respective other row of holes with an integer greater than zero.

The proportion of the holes having the hole markings a to the holes with the hole markings b on the surface of the cover sheet is preferably in the range of 1: 1, 4 to 1: 1, 7. This ratio is particularly preferably 1: 1.5.

The ratio of the holes with the hole markings a to the holes with the hole markings c on the surface of the cover sheet is preferably in the range of 2.2 to 1 to 1.8 to 1. Particularly preferably, this ratio is 2 to 1.

The ratio of the holes with the hole markings a to the holes with the hole markings b to the holes with the hole markings c on the surface of the cover sheet is most preferably 2 to 3 to 1.

There is no limit to the way the hole markings are marked. They may be used as visible markers in various shapes (such as square, circle, cross, grid and star) and / or markers of different colors as hole markings. Preferably, markers of different colors, such as red, green and blue, are used as the hole marking. These markers are in turn preferably applied as a border of the hole on the film, for example by printing or gluing. Likewise, tactile markings (haptic markings) can be attached. As haptic markings are located on the hole area localized elevations or subsidence of the film surface, such as embossed or glued or welded nubs, grooves, cones or balls. In this case, each hole identification a, b and c each assign a haptic marking. In particular, such haptic markings are favorable if the consumer wants to place the highlights on areas which are difficult to see even with a mirror, such as e.g. the back of the head.

It is preferable in the present invention that a hole designation sequence "hole mark a / hole mark b / hole mark a" of the hole row 1 and hole mark string "hole mark b / hole mark c / hole mark b" of the immediately following hole row 2 form opposite sides of a quadrangle having no hole in the face thereof with hole marking is none of the inner corner of the corner Rectangle is less than 45 °. The hole marking order reads in the rectangle clockwise or counterclockwise along the circumference "hole mark a / hole mark b / hole mark a / hole mark b / hole mark c / hole mark b." The formed square is preferably a rectangle 80% of the area of the entire hole pattern, particularly preferably at least 90% of the area of the entire hole pattern is built up of said quadrilaterals.

It is inventively preferred that the rows of holes do not intersect.

In a specific embodiment, the rows of holes are arranged in parallel. It is preferred if the rows of holes have the same distance from each other. Most preferably, in the context of this particular embodiment, the spacings of the adjacent holes along each row of holes and the distances of the rows of holes are the same.

Examples of cutouts from cover foils with a perforated pattern according to the invention are shown in FIGS. 5 and 6. The hole marking a corresponds to the star * in these figures. The hole marking b corresponds to the plus sign + in these figures. The hole designation c in these figures corresponds to the grid symbol #. In FIG. 5, a row of holes describes a wave motion. The hole rich 1 and 2 are parallel to each other. In FIG. 6, a row of holes describes a straight line. The hole rich 1 and 2 are parallel to each other. The hole designation sequences "hole mark a / hole mark b / hole mark a" and hole mark string "hole mark b / hole mark c / hole mark b" in figures 5 and 6 form the sides of a rectangle, clockwise or counterclockwise along its circumference, the hole marking sequence "Hole mark a / Hole mark b / Hole mark a / Hole mark b / Hole mark c / Hole mark b".

The cover sheets are preferably made of materials compatible with cosmetic color changing agents, such as polyethylene or polyvinyl chloride. It is possible to manufacture the cover film in one layer or in multiple layers, that is to say from two or more superposed film layers. A multilayer embodiment of the cover film preferably consists of two film layers. These film layers are preferably glued, knurled, sewn or welded along the edges. According to a two-layer embodiment, one of the film layers preferably has no prefabricated holes. The other film layer carries the already pre-punched hole pattern. The hole marking can be applied both on the film layer with hole pattern, as well as on the film layer without pre-punched Be mounted hole pattern, the hole markings are preferably mounted on the foil layer with the pre-punched hole pattern.

A second object of the invention is a head covering for covering human hair in the form of a hood, which contains at least one cover sheet of the first subject of the invention. The said cover sheet in particular occupies the part of the hood which comes into contact with the head hair in use.

The hood preferably has the shape of a shuttle or a helmet. Particularly preferred is the helmet shape.

Very particularly preferred is a hood, as shown in FIGS. 1 to 4. The hood contains two side parts (1) and (2) and a central part (3) and optionally a screen part (4). These parts are preferably interconnected at their contact points by a welded and / or stitched seam (8) and (9). The seams and the outer edges of the parts (1), (2), (3) and (4) are preferably hemmed with a seam. The seam is preferably made of the material of the outer film. At least the parts (1), (2) and (3) of the hood are made of the (preferably two-ply) cover sheet of the first subject of the invention. If it is the two-layer embodiment, preferably the outer film layer has a pre-punched hole pattern, the inner film layer has no holes. Both superimposed film layers are connected to each other by the seam of the parts (1), (2) and (3), as well as the other by the seam. The hood, when pulled over the head, covers the back of the head and has an opening for the face in front (see Fig. 2, the "front view"). At the upper part of the field of view, if appropriate, the screen part (4) is attached. The outer edge of the parts (1), (2) and (3) and optionally the edge of the screen part are bordered by a seam as described above. The hem can be extended beyond the edge of the hood at the lower part of the visual field and forms the bands (5) and (6) on the right and left with which the hood can be attached to the head by knotting the bands together under the chin. Fig. 2 and Fig. 4 show an elastic band (7), which along the lower edge of the central part (3) can be incorporated. The elastic band ensures a tight fit of the hood. The hood adapts better with the help of the elastic to different head sizes.

A third object of the invention is a method for coloring human hair, in which

A is covered in a first step, the head hair with a headgear according to the second subject of the invention, B are then drawn through marked holes of the headgear strands of hair, applied to the hair strands a color changing agent and after a

Exposure time Z1 is rinsed again, D the headgear is removed, wherein in step B

(i) for obtaining a low density of strands the strands of hair predominantly through

Holes are drawn with the hole marking c, (ii) to obtain a middle strand density the strands of hair predominantly through

Holes are drawn with the hole marking a, (iii) to obtain a high strand density the strands of hair predominantly through

Holes are drawn with the hole marking b.

By "predominantly" is defined a rate of use of said hole identification combination in which at least 90%, in particular at least 95%, of the possible holes of the selected hole identification combination usable in step B were used and the remainder either unused or used by selecting holes with incorrect hole identification has been.

In step B, fiber bundles or hair strands, for example, are pulled through the holes of the hood with a streak puller.

A sharper contrast transition is achieved when the hair is dry and the color-changing agent is applied to the dry hair in step C.

The highlights are treated in step C either completely or partially with the color change agent. Full treatment will result in completely color changed highlights. In a partial treatment, for example, the fiber tips or other selected regions of the fiber bundle can be selectively nuanced.

The color-changing agent is preferably applied to the selected fiber strands with the hands using suitable protective gloves for complete treatment. In principle, the color-changing agent can also be applied to the highlights provided for shading with an applicator, such as a brush or a brush, in particular if a partial color change is desired. The reaction time Z1 is preferably 5 to 60 minutes, more preferably 20 to 45 minutes.

The color-changing agent contains at least one color-modifying component in a cosmetic carrier.

The color change agent used in the invention contains a cosmetic carrier. Such carriers are, for example, creams, emulsions, gels or surfactant-containing foaming solutions, such as shampoos, foam aerosols or other preparations which are particularly suitable for use on the hair. But it is also conceivable to integrate the ingredients in a powdered or tablet-like formulation, which is dissolved in water before use. The carriers may in particular be aqueous or aqueous-alcoholic.

An aqueous carrier contains at least 50% by weight of water.

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

The color-changing component is preferably selected

(A) from at least one oxidation dye precursor of the type of developer components and optionally additionally at least one coupler component and / or

(b) from oxo dye precursors and / or

(c) from at least one direct dye and / or

(D) from at least one precursor of natural dyes and / or

(E) from at least one oxidizing agent and optionally additionally at least one bleach booster.

As developer components are usually primary aromatic amines with another, in the para or ortho position, free or substituted hydroxy or Amino group, Diaminopyridinderivate, heterocyclic hydrazones, 4-aminopyrazole derivatives and 2,4,5, 6-tetraaminopyrimidine and its derivatives used.

It may be preferred according to the invention to use as the developer component a p-phenylenediamine derivative or one of its physiologically acceptable salts. Particular preference is given to p-phenylenediamine derivatives of the formula (Ent1)

in which

G ¹ represents a hydrogen atom, a C ₁ to C ₄ alkyl radical, a C ₁ to C ₄ monohydroxyalkyl radical, a C ₂ to C ₄ polyhydroxyalkyl radical, a (C ₁ to C ₄ J -alkoxy) (C C ₁ - to C ₄ ) -alkyl radical, a 4'-aminophenyl radical or a C ₁ - to C ₄ -alkyl radical which is substituted by a nitrogen-containing group, a phenyl or a 4'-aminophenyl radical; G ² is a hydrogen atom, a C ₁ - to C ₄ alkyl, C ₁ - to C ₄ - monohydroxyalkyl radical, a C ₂ - to C ₄ polyhydroxyalkyl radical, a (C ₁ - to C ₄₎ alkoxy (C _r to C ₄₎ - alkyl radical or a C ₁ - to C ₄ -alkyl radical which is substituted by a nitrogen-containing group;

G ³ represents a hydrogen atom, a halogen atom such as a chlorine, bromine, iodine or fluorine atom, a C ₁ - to C ₄ -alkyl radical, a C ₁ - to C ₄ -monohydroxyalkyl radical, a C ₂ - to C ₄ Polyhydroxyalkyl, C ₁ to C ₄ hydroxyalkoxy, C ₁ to C ₄ acetylaminoalkoxy, C ₁ to C ₄ mesylaminoalkoxy or C ₁ to C ₄ carbamoylaminoalkoxy;

G ⁴ represents a hydrogen atom, a halogen atom or a C ₁ - to C ₄ -alkyl radical or when G ³ and G ⁴ are ortho to each other, they may together form a bridging α, ω-alkylenedioxy group, such as, for example, an ethylenedioxy group.

Examples of the C ₁ - to C ₄ -alkyl radicals mentioned as substituents in the compounds according to the invention are the groups methyl, ethyl, propyl, isopropyl and butyl. Ethyl and methyl are preferred alkyl radicals. C ₁ -C ₄ -alkoxy radicals preferred according to the invention are, for example, a methoxy or an ethoxy group. Furthermore, as preferred examples of a C ₁ - to C ₄ -hydroxyalkyl group, a hydroxymethyl, a 2-hydroxyethyl, a 3-hydroxypropyl or a 4-hydroxybutyl group may be mentioned. A 2-hydroxyethyl group is especially prefers. A particularly preferred C ₂ to C ₄ polyhydroxyalkyl group is the 1, 2-dihydroxyethyl group. Examples of halogen atoms are according to the invention F, Cl or Br atoms, Cl atoms are very particularly preferred. The other terms used are derived according to the invention from the definitions given here. Examples of nitrogen-containing groups of the formula (Ent1) are especially the amino groups, C ₁ - to C ₄ monoalkylamino, C _r to C ₄ dialkylamino, C ₁ - to C ₄ -Trialkylammoniumgruppen, C ₁ - to C ₄ - Monohydroxyalkylaminogruppen, imidazolinium and ammonium.

Particularly preferred p-phenylenediamines of the formula (Ent1) are selected from p-phenylenediamine, p-toluenediamine, 2-chloro-p-phenylenediamine, 2,3-dimethyl-p-phenylenediamine, 2,6-dimethyl-p-phenylenediamine, 2 , 6-diethyl-p-phenylenediamine, 2,5-dimethyl-p-phenylenediamine, N, N-dimethyl-p-phenylenediamine, N, N-diethyl-p-phenylenediamine, N, N-dipropyl-p-phenylenediamine, 4 -Amino-3-methyl- (N, N-diethyl) -aniline, N, N-bis- (β-hydroxyethyl) -p-phenylenediamine, 4-N, N-bis- (β-hydroxyethyl) amino-2- methylaniline, 4-N, N-bis (β-hydroxyethyl) amino-2-chloroaniline, 2- (β-hydroxyethyl) -p-phenylenediamine, 2- (α, β-dihydroxyethyl) -p-phenylenediamine, 2-fluoro -p-phenylenediamine, 2-isopropyl-p-phenylenediamine, N- (β-hydroxypropyl) -p-phenylenediamine, 2-hydroxymethyl-p-phenylenediamine, N, N-dimethyl-3-methyl-p-phenylenediamine, N, N (Ethyl, β-hydroxyethyl) -p-phenylenediamine, N- (β, γ-dihydroxypropyl) -p-phenylenediamine, N- (4'-aminophenyl) -p-phenylenediamine, N-phenyl-p-phenylenediamine, 2- (β-hydroxyethyloxy) -p-phenylenediamine, 2- (β-acetyl aminoethyloxy) -p-phenylenediamine, N- (β-methoxyethyl) -p-phenylenediamine and 5,8-diaminobenzo-1, 4-dioxane and their physiologically acceptable salts.

Very particular preferred p-phenylenediamine derivatives of the formula (Ent1) according to the invention are p-phenylenediamine, p-toluenediamine, 2- (β-hydroxyethyl) -p-phenylenediamine, 2- (α, β-dihydroxyethyl) -p-phenylenediamine and N, N bis (.beta.-hydroxyethyl) -p-phenylenediamine.

It may further be preferred according to the invention to use as developer component compounds which contain at least two aromatic nuclei which are substituted by amino and / or hydroxyl groups.

Among the binuclear developer components which can be used in the color-changing agents according to the invention, mention may be made, in particular, of the compounds corresponding to the following formula (Ent2) and their physiologically tolerated salts:

in which:

Z ¹ and Z ² independently of one another, are a hydroxyl or NH ₂ radical, which, by a C ₁ is optionally substituted by a Ci to _C4 alkyl group - is substituted to C ₄ -hydroxyalkyl radical and / or by a bridge Y, or which is optionally part of a bridging ring system, the bridge Y is an alkylene group having 1 to 14 carbon atoms, such as a linear or branched alkylene chain or an alkylene ring, which is one or more nitrogen-containing groups and / or one or more heteroatoms such as oxygen, Sulfur or nitrogen atoms may be interrupted or terminated and may be substituted by one or more hydroxyl or C ₁ - to C ₈ alkoxy radicals, or a direct bond,

G ⁵ and G ⁶ independently of one another represent a hydrogen or halogen atom, a C ₁ - to C ₄ -alkyl radical, a C ₁ - to C ₄ -monohydroxyalkyl radical, a C ₂ - to C ₄ -hydroxyalkyl radical, a C ₁ - to C ₄ -aminoalkyl radical or a direct compound for bridging Y,

G ⁷ , G ⁸ , G ⁹ , G ¹⁰ , G ¹¹ and G ¹² independently represent a hydrogen atom, a direct bond to the bridge Y or a C ₁ - to C ₄ -alkyl radical, with the provisos that the compounds of the formula (Ent2) contain only one bridge Y per molecule and the compounds of the formula (Ent2) contain at least one amino group which carries at least one hydrogen atom.

The substituents used in formula (Ent2) are inventively defined analogous to the above statements.

Preferred binuclear developer components of the formula (Ent2) are in particular: N, N'-bis (β-hydroxyethyl) -N, N'-bis (4'-aminophenyl) -1,3-diamino-propan-2-ol, N, N'-bis (β-hydroxyethyl) -N, N'-bis (4'-aminophenyl) ethylenediamine, N, N'-bis (4-aminophenyl) tetramethylenediamine, N ₁ N ¹ - Bis - (.beta.-hydroxyethyl) -N, N'-bis (4-aminophenyl) tetramethylenediamine, N, N'-bis (4-methyl) aminophenyl) tetramethylenediamine, N, N'-diethyl-N, N'-bis (4'-amino-3'-methylphenyl) ethylenediamine, bis (2-hydroxy-5-aminophenyl) -methane, 1, 3 Bis- (2,5-diaminophenoxy) -propan-2-ol, N, N'-bis (4'-aminophenyl) -1, 4-diazacycloheptane, N, N'-bis (2-hydroxy-5 -aminobenzyl) -piperazine, N- (4'-aminophenyl) -p-phenylenediamine and 1, 10-bis (2 ', 5'-diaminophenyl) -1, 4,7,10-tetraoxadecane and their physiologically acceptable salts.

Very particularly preferred double bases of formula (Ent2) are N ₁ N ¹ - bis (.beta.-hydroxyethyl) -N, N'-bis- (4'-aminophenyl) -1, 3-diamino-propan-2-ol, Bis (2-hydroxy-5-aminophenyl) methane, 1, 3-bis (2,5-diaminophenoxy) -propan-2-ol, N, N'-bis (4'-aminophenyl) -1, 4-diazacycloheptane and 1, 10-bis- (2 ', 5'-diaminophenyl) -1,4,7,10-tetraoxadecane or one of its physiologically acceptable salts.

Furthermore, it may be preferred according to the invention to use as the developer component a p-aminophenol derivative or one of its physiologically tolerable salts. Particular preference is given to p-aminophenol derivatives of the formula (Ent3)

in which:

G ¹³ represents a hydrogen atom, a halogen atom, a C ₁ - to C ₄ alkyl radical, a Ci to C ₄ monohydroxyalkyl radical, a C ₂ - to C ₄ polyhydroxyalkyl radical, a (Ci to C ₄₎ alkoxy (C ₁ - to C ₄ ) -alkyl radical, a C ₁ - to C ₄ -am inoalkylrest, a K ^ dTOXy- (C ₁ - to C ₄ ) - alkylamino, a C ₁ - to C ₄ -hydroxyalkoxy, a C ₁ - to C ^ hydroxyalkyKC ^ to C ₄ ) -aminoalkylrest or a (di-C ₁ - to C ₄ -alkylamino) - (C ₁ to C ₄ ) -alkyl radical, and

G ¹⁴ represents a hydrogen or halogen atom, a C ₁ - to C ₄ alkyl, C ₁ - to C ₄ - monohydroxyalkyl radical, a C ₂ - to C ₄ polyhydroxyalkyl radical, a (C ₁ - to C ₄ J- AIkOXy- (C ₁ - to C ₄ ) -alkyl radical, a C ₁ - to C ₄ -Aminoalkylrest or a C ₁ - to C ₄ -Cyanoalkylrest,

G ¹⁵ is hydrogen, C ₁ - to C ₄ -alkyl, C ₁ - to C ₄ -monohydroxyalkyl, C ₂ - to C ₄ -polyhydroxyalkyl, phenyl or benzyl, and

G ¹⁶ is hydrogen or a halogen atom. The substituents used in formula (Ent3) are defined according to the invention analogously to the above statements.

Preferred p-aminophenols of the formula (Ent3) are, in particular, p-aminophenol, N-methyl-p-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol, 2-hydroxymethylamino-4-aminophenol, 4 -Amino-3-hydroxymethylphenol, 4-amino-2- (β-hydroxyethoxy) -phenol, 4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol, 4-amino-2-methoxymethyl-phenol, 4-amino -2-aminomethylphenol, 4-amino-2- (β-hydroxyethyl-aminomethyl) phenol, 4-amino-2- (α, β-dihydroxyethyl) phenol, 4-amino-2-fluorophenol, 4-amino-2 -chlorophenol, 4-amino-2,6-dichlorophenol, 4-amino-2- (diethyl-aminomethyl) -phenol and their physiologically acceptable salts.

Very particularly preferred compounds of the formula (Ent3) are p-aminophenol, 4-amino-3-methylphenol, 4-amino-2-aminomethylphenol, 4-amino-2- (α, β-dihydroxyethyl) -phenol and 4-amino 2- (diethylaminomethyl) -phenol.

Further, the developer component may be selected from o-aminophenol and its derivatives such as 2-amino-4-methylphenol, 2-amino-5-methylphenol or 2-amino-4-chlorophenol.

Further, the developer component may be selected from heterocyclic developer components, such as the pyridine, pyrimidine, pyrazole, pyrazole pyrimidine derivatives and their physiologically acceptable salts.

Preferred pyridine derivatives are, in particular, the compounds described in the patents GB 1 026 978 and GB 1 153 196, such as 2,5-diamino-pyridine, 2- (4'-methoxyphenyl) amino-3-amino-pyridine, 2,3-diamino-6-methoxy-pyridine, 2- (β-methoxyethyl) amino-3-amino-6-methoxy-pyridine and 3,4-diamino-pyridine.

Preferred pyrimidine derivatives are, in particular, the compounds described in German Patent DE 2 359 399, Japanese Laid-Open Patent Publication JP 02019576 A2 or in the published patent application WO 96/15765, such as 2,4,5,6-tetraaminopyrimidine, 4-hydroxy- 2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2-dimethylamino-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine and 2,5,6- triaminopyrimidine.

Preferred pyrazole derivatives are, in particular, the compounds described in patents DE 3 843 892, DE 4 133 957 and patent applications WO 94/08969, WO 94/08970, EP-740 931 and DE 195 43 988, such as 4,5-diamino-i-methylpyrazole, 4,5-diamino-1- (β-hydroxyethyl) pyrazole, 3,4-diaminopyrazole, 4,5-diamino-1- (4 ' -chlorobenzyl) pyrazole, 4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole, 4,5-diamino-1-methyl-3-phenylpyrazole, 4-amino 1, 3-dimethyl-5-hydrazinopyrazole, 1-benzyl-4,5-diamino-3-methylpyrazole, 4,5-diamino-3-tert-butyl-1-methylpyrazole, 4,5-diamino-1-tert .-butyl-3-methylpyrazole, 4,5-diamino-1- (β-hydroxyethyl) -3-methylpyrazole, 4,5-diamino-1-ethyl-3-methylpyrazole, 4,5-diamino-1-ethyl- 3- (4'-methoxyphenyl) pyrazole, 4,5-diamino-1-ethyl-3-hydroxymethylpyrazole, 4,5-diamino-3-hydroxymethyl-1-methylpyrazole, 4,5-diamino-3-hydroxymethyl-1 -isopropylpyrazole, 4,5-diamino-3-methyl-1-isopropylpyrazole, 4-amino-5- (2-aminoethyl) amino-1,3-dimethylpyrazole, 3,4,5-

Triaminopyrazole, 1-methyl-3,4,5-triaminopyrazole, 3,5-diamino-1-methyl-4-methylaminopyrazole and 3,5-diamino-4- (β-hydroxyethyl) amino-1-methylpyrazole.

Preferred pyrazolopyrimidine derivatives are, in particular, the derivatives of the pyrazolo [1,5-a] opyrimidine of the following formula (Ent4) and their tautomeric forms, if a tautomeric equilibrium exists:

in which:

G ¹⁷ , G ¹⁸ , G ¹⁹ and G ²⁰ independently of one another represent a hydrogen atom, a C ₁ - to C ₄ -alkyl radical, an aryl radical, a C ₁ - to C ₄ -hydroxyalkyl radical, a C ₂ - to C ₄ - Polyhydroxyalkylrest a (C ₁ - to C ₄ J-AIkOXy- (C ₁ - to C ₄ ) -alkyl radical, a C ₁ - to C ₄ - aminoalkyl, which may be protected by an acetyl-ureide or a sulfonyl radical can, a (C ₁ - to C ₄₎ alkylamino (C _- to C ₄₎ alkyl group a di - aminoalkyl [(C _r to C ^ -alkylHd- to C _4), wherein the dialkyl residues optionally form a carbon cycle or a heterocycle with 5 or 6 chain members, a C ₁ - to C ₄ -hydroxyalkyl or a di- (C ₁ - to C ^ -fHydroxyalkylHC _! - to C ₄ ) -aminoalkyl radical which are X radicals independently represent a hydrogen atom, a C ₁ - to C ₄ - alkyl radical, an aryl radical, a C ₁ - to C ₄ -hydroxyalkyl group, a C ₂ - to C ₄ - polyhydroxyalkyl radical, a C ₁ - to C ₄ -aminoalkyl , one (C ₁ - to C ₄ ) -alkylamino- (C ₁ to C ₄ ) -alkyl radical, a DK (C ₁ - to C ₄ ) alkyl] - (C ₁ - to C ₄ ) -aminoalkyl radical, where the dialkyl radicals optionally have one carbon cycle or form a heterocycle having 5 or 6 chain members, a C ₁ - to C ₄ -hydroxyalkyl or a di- (C ₁ - to C ₄ -hydroxyalkyl) aminoalkyl radical, an amino group, a C ₁ - to C ₄ -alkyl- or di- (Cr to C ₄ hydroxyalkyl) amino group, a halogen atom, a carboxylic acid group or a sulfonic acid group, i has the value 0, 1, 2 or 3, p is Value 0 or 1, q has the value 0 or 1 and n has the value 0 or 1, with the proviso that the sum of p + q is not equal to 0, if p + q is 2, n is 0, and the groups NG ¹⁷ G ¹⁸ and NG ¹⁹ G ²⁰ occupy the positions (2, 3); (5,6); (6,7); (3,5) or (3,7); when p + q is 1, n is 1, and the groups NG ¹⁷ G ¹⁸ (or NG ¹⁹ G ²⁰ ) and the

Group OH occupy the positions (2,3); (5,6); (6,7); (3,5) or (3,7);

The substituents used in formula (Ent4) are defined according to the invention analogously to the above statements.

When the pyrazolo [1,5-a] pyrimidine of the above formula (Ent4) contains a hydroxy group at one of the 2, 5 or 7 positions of the ring system, there is a tautomeric equilibrium which is shown, for example, in the following scheme:

Among the pyrazolo [1, 5-a] pyrimidines of the above formula (Ent4) may be mentioned in particular:

Pyrazolo [1,5-a] pyrimidine-3,7-diamine;

2,5-dimethyl-pyrazolo [1,5-a] pyrimidine-3,7-diamine;

Pyrazolo [1,5-a] pyrimidine-3,5-diamine;

2,7-dimethyl-pyrazolo [1,5-a] pyrimidine-3,5-diamine;

3-aminopyrazolo [1,5-a] pyrimidin-7-ol;

3-aminopyrazolo [1,5-a] pyrimidin-5-ol;

2- (3-aminopyrazolo [1,5-a] pyrimidin-7-ylamino) ethanol; 2- (7-aminopyrazolo [1,5-a] pyrimidin-3-ylamino) ethanol;

2 - [(3-aminopyrazolo [1,5-a] pyrimidin-7-yl) - (2-hydroxy-ethyl) -amino] -ethanol;

2 - [(7-aminopyrazolo [1,5-a] pyrimidin-3-yl) - (2-hydroxy-ethyl) -amino] -ethanol;

5,6-dimethylpyrazolo [1,5-a] pyrimidine-3,7-diamine;

2,6-dimethylpyrazolo [1,5-a] pyrimidine-3,7-diamine;

3-amino-7-dimethylamino-2,5-dimethylpyrazolo [1,5-a] pyrimidine; and their physiologically acceptable salts and their tautomeric forms when a tautomeric equilibrium is present.

The pyrazolo [1, 5-a] pyrimidines of the above formula (Ent4) can be prepared as described in the literature by cyclization from an aminopyrazole or hydrazine.

As coupler components m-phenylenediamine derivatives, naphthols, resorcinol and resorcinol derivatives, pyrazolones and m-aminophenol derivatives and heterocyclic compounds are generally used.

Coupler components preferred according to the invention are m-aminophenol and its derivatives, such as, for example, 5-amino-2-methylphenol, N-

Cyclopentyl-3-aminophenol, 3-amino-2-chloro-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol, 2,6-dimethyl-3-aminophenol, 3-trifluoroacetylamino-2-chloro-6-methylphenol, 5- Amino-4-chloro-2-methylphenol, 5-amino-4-methoxy-2-methylphenol, 5- (2'-

Hydroxyethyl) amino-2-methylphenol, 3- (diethylamino) -phenol, N-cyclopentyl-3-aminophenol, 1,3-dihydroxy-5- (methylamino) -benzene, 3-ethylamino-4-methylphenol and 2,4 -

Dichloro-3-aminophenol, o-aminophenol and its derivatives, m-diaminobenzene and its derivatives such as 2,4-diaminophenoxy-ethanol, 1, 3

Bis- (2 ', 4'-diaminophenoxy) -propane, 1-methoxy-2-amino-4- (2'-hydroxyethylamino) benzene, 1, 3

Bis- (2 ', 4'-diaminophenyl) -propane, 2,6-bis- (2'-hydroxyethylamino) -1-methylbenzene, 2 - ({3 - [(2-

Hydroxyethyl) amino] -4-methoxy-5-methylphenyl} amino) ethanol, 2 - ({3 - [(2-

Hydroxyethyl) amino] -2-methoxy-5-methylphenyl} amino) ethanol, 2 - ({3 - [(2-

Hydroxyethyl) amino] -4,5-dimethylphenyl} amino) ethanol, 2- [3-morpholin-4-ylphenyl) amino] ethanol, 3-amino-4- (2-methoxyethoxy) -5-methylphenylamine and 1-amino- 3-bis (2'-hydroxyethyl) aminobenzene, o-diaminobenzene and its derivatives such as 3,4-diaminobenzoic acid and 2,3-

Diamino-1-methylbenzene, Di- or trihydroxybenzene derivatives such as resorcinol, resorcinol monomethyl ether, 2-methylresorcinol, 5-methylresorcinol, 2,5-dimethylresorcinol, 2-chlororesorcinol, 4-chlororesorcinol, pyrogallol and 1,2,4-trihydroxybenzene, pyridine derivatives such as 2,6-dihydroxypyridine , 2-amino-3-hydroxypyridine, 2-amino-5-chloro-3-hydroxypyridine, 3-amino-2-methylamino-6-methoxypyridine, 2,6-dihydroxy-3,4-dimethylpyridine, 2,6-dihydroxy 4-methylpyridine, 2,6-diaminopyridine, 2,3-diamino-6-methoxypyridine and 3,5-diamino-2,6-dimethoxypyridine,

Naphthalene derivatives such as 1-naphthol, 2-methyl-1-naphthol, 2-hydroxymethyl-1-naphthol, 2-hydroxyethyl-1-naphthol, 1, 5-dihydroxynaphthalene, 1, 6-dihydroxynaphthalene, 1, 7-dihydroxynaphthalene, 1 , 8-dihydroxynaphthalene, 2,7-dihydroxynaphthalene and 2,3-dihydroxynaphthalene,

Morpholine derivatives such as 6-hydroxybenzomorpholine and 6-aminobenzomorpholine,

Quinoxaline derivatives such as 6-methyl-1,2,3,4-tetrahydroquinoxaline, pyrazole derivatives such as 1-phenyl-3-methylpyrazol-5-one, indole derivatives such as 4-hydroxyindole, 6-hydroxyindole and 7-hydroxyindole, pyrimidine derivatives such as For example, 4,6-diaminopyrimidine, 4-amino-2,6-dihydroxypyrimidine, 2,4-diamino-6-hydroxypyrimidine, 2,4,6-trihydroxypyrimidine, 2-amino-4-methylpyrimidine ₁ 2-amino-4-hydroxy 6-methylpyrimidine and 4,6-dihydroxy-2-methylpyrimidine, or methylenedioxybenzene derivatives such as, for example, 1-hydroxy-3,4-methylenedioxybenzene, 1-amino-3,4-methylenedioxybenzene and 1- (2'-hydroxyethyl) -amino 3,4-methylenedioxybenzene and their physiologically acceptable salts.

Particularly preferred coupler components according to the invention are 1-naphthol, 1, 5, 2,7- and 1, 7-dihydroxynaphthalene, 3-aminophenol, 5-amino-2-methylphenol, 2-amino-3-hydroxypyridine, resorcinol, 4-chlororesorcinol , 2-chloro-6-methyl-3-aminophenol, 2-methylresorcinol, 5-methylresorcinol, 2,5-dimethylresorcinol and 2,6-dihydroxy-3,4-dimethylpyridine and the physiologically acceptable salts of the aforementioned compounds.

The color-changing agents preferably contain the developer components in an amount of 0.005 to 10% by weight, preferably 0.1 to 5% by weight, based on the entire color-changing agent.

The color-changing agents contain the coupler components preferably in an amount of 0.005 to 10% by weight, preferably 0.1 to 5% by weight, based on the entire color-changing agent. The color-changing agent used in the process of the present invention may be used as the color-changing component in the form of the oxo dye precursors at least one combination of at least one compound of component A. Compounds containing a reactive carbonyl group with at least one compound of component B. Compounds selected from (a) CH-acid Compounds, (b) compounds having primary or secondary amino group or hydroxy group selected from primary or secondary aromatic amines, nitrogen-containing heterocyclic compounds and aromatic hydroxy compounds.

Compounds according to the invention having a reactive carbonyl group (also referred to below as reactive carbonyl compounds or component A) have at least one carbonyl group as reactive group which reacts with the compounds of component B to form a chemical bond linking both components. Furthermore, those compounds according to the invention are also included as component A in which the reactive carbonyl group is derivatized or masked in such a way that the reactivity of the carbon atom of the derivatized or masked carbonyl group with respect to component B is always present. These derivatives are preferably condensation compounds of reactive carbonyl compounds with a) amines and their derivatives to form imines or oximes as a condensation compound b) alcohols to form acetals or ketals as a condensation compound c) water to form hydrates as a condensation compound of aldehydes.

Component A is preferably selected from the group formed from acetophenone, propiophenone, 2-hydroxyacetophenone, 3-hydroxyacetophenone, 4-hydroxyacetophenone, 2-hydroxypropiophenone, 3-hydroxypropiophenone, 4-hydroxypropiophenone, 2-hydroxybutyrophenone, 3 Hydroxybutyrophenone, 4-hydroxybutyrophenone, 2,4-dihydroxyacetophenone, 2,5-dihydroxyacetophenone, 2,6-dihydroxyacetophenone, 2,3,4-trihydroxyacetophenone, 3,4,5-trihydroxyacetophenone, 2,4,6-dihydroxyacetophenone Trihydroxyacetophenone, 2,4,6-trimethoxyacetophenone, 3,4,5-trimethoxyacetophenone, 3,4,5-trimethoxyacetophenone diethyl ketal, A-hydroxy-3-methoxy-acetophenone, 3,5-dimethoxy-4- hydroxyacetophenone, 4-aminoacetophenone, 4-dimethylaminoacetophenone, 4-morpholinoacetophenone, 4-piperidinoacetophenone, A-imidazolinoacetophenone, 2-hydroxy-5-bromo-acetophenone, 4-hydroxy-3-nitroacetophenone, acetophenone-2-carboxylic acid, acetophenone-4 carboxylic acid, benzophenone, A-

Hydroxybenzophenone, 2-aminobenzophenone, 4,4'-dihydroxybenzophenone, 2,4-dihydroxy- benzophenone, 2,4,4'-trihydroxybenzophenone ₁ 2,3,4-trihydroxybenzophenone, 2-hydroxy-1-acetonaphthone, i-hydroxy-2-acetonaphthone, chromone, chromone-2-carboxylic acid, flavone, 3-hydroxyflavone, 3 , 5,7-trihydroxyflavone, 4 ', 5,7-trihydroxyflavone, 5,6,7-trihydroxyflavone, quercetin, 1 -andanone, 9-fluorenone, 3-hydroxyfluorenone, anthrone, 1, 8-dihydroxyanthrone, vanillin, coniferylaldehyde, 2-methoxybenzaldehyde, 3-methoxybenzaldehyde, A-methoxybenzaldehyde, 2-ethoxybenzaldehyde, 3-ethoxybenzaldehyde, 4-ethoxybenzaldehyde, A-hydroxy-2,3-dimethoxybenzaldehyde, 4-hydroxy-2,5-dimethoxybenzaldehyde, 4- Hydroxy-2,6-dimethoxybenzaldehyde, 4-hydroxy-2-methylbenzaldehyde, 4-hydroxy-3-methylbenzaldehyde, A-hydroxy-2,3-dimethylbenzaldehyde, 4-hydroxy-2,5- dimethylbenzaldehyde, 4-hydroxy-2,6-dimethyl-benzaldehyde, 4-hydroxy-3,5-dimethoxy-benzaldehyde, 4-hydroxy-3,5-dimethyl-benzaldehyde, 3,5-diethoxy-4-hydroxy benzaldehyde, 2,6-diethoxy-4-hydroxy-benzaldehyde, 3-hydroxy-4-methoxy-benzaldehyde, 2-hydroxy-4-methoxy-benzaldehyde hyd, 2-ethoxy-4-hydroxybenzaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, 4-ethoxy-2-hydroxybenzaldehyde, 4-ethoxy-3-hydroxybenzaldehyde, 2,3-dimethoxybenzaldehyde, 2, 4-dimethoxybenzaldehyde, 2,5-dimethoxybenzaldehyde, 2,6-dimethoxybenzaldehyde, 3,4-dimethoxybenzaldehyde, 3,5-dimethoxybenzaldehyde, 2,3,4-trimethoxybenzaldehyde, 2,3,5-trimethoxybenzaldehyde, 2,3,6- Trimethoxybenzaldehyde, 2,4,6-trimethoxybenzaldehyde, 2,4,5-trimethoxybenzaldehyde, 2,5,6-trimethoxybenzaldehyde, 2-hydroxybenzaldehyde, 3-hydroxybenzaldehyde, 4-hydroxybenzaldehyde, 2,3-dihydroxybenzaldehyde, 2,4-dihydroxybenzaldehyde, 2,5-dihydroxybenzaldehyde, 2,6-dihydroxybenzaldehyde, 3,4-dihydroxybenzaldehyde, 3,5-dihydroxybenzaldehyde, 2,3,4-trihydroxybenzaldehyde, 2,3,5-trihydroxybenzaldehyde, 2,3,6-trihydroxybenzaldehyde, 2, 4,6-trihydroxybenzaldehyde, 2,4,5-trihydroxybenzaldehyde, 2,5,6-trihydroxybenzaldehyde, 4-hydroxy-2-methoxybenzaldehyde, 4-dimethylaminobenzaldehyde, 4-diethylaminobenzaldehyde, A-dimethylamino-2-hydroxybenzaldehyde, 4-die thylamino-2-hydroxybenzaldehyde, 4-pyrrolidinobenzaldehyde, 4-morpholinobenzaldehyde, 2-morpholinobenzaldehyde, 4-piperidinobenzaldehyde, 2-methoxy-1-naphthaldehyde, 4-methoxy-1-naphthaldehyde, 2-hydroxy-1-naphthaldehyde, 2, 4-dihydroxy-1-naphthaldehyde, 4-hydroxy-3-methoxy-1-naphthaldehyde, 2-hydroxy-4-methoxy-1-naphthaldehyde, 3-hydroxy-4-methoxy-1-naphthaldehyde, 2,4-dimethoxy 1-naphthaldehyde, 3,4-dimethoxy-1-naphthaldehyde, 4-hydroxy-1-naphthaldehyde, 4-dimethylamino-1-naphthaldehyde, 2-methoxycinnamaldehyde, 4-methoxycinnamaldehyde, 4-hydroxy-3-methoxy cinnamic aldehyde, 3,5-dimethoxy-4-hydroxy-cinnamaldehyde, 4-dimethylaminocinnamaldehyde, 2-dimethylaminobenzaldehyde, 2-chloro-4-dimethylaminobenzaldehyde, 4-dimethylamino-2-methylbenzaldehyde, 4-diethylaminocinnamic aldehyde, 4-dibutylaminobenzaldehyde, 4-diphenylaminobenzaldehyde, 4-dimethylamino-2-methoxybenzaldehyde, 4- (1-imidazolyl) benzaldehyde, piperonal, 2,3,6,7-tetrahydro-1H, 5H-benzo [ij] quinolizine-9-carboxaldehyde , 2,3,6,7-tetrahydro-8-hydroxy-1H, 5H-benzo [ij] quinolizine-9-carboxaldehyde, N-ethylcarbazole-3-aldehyde, 2-formylmethylene-1,3,3-trimethylindoline (Fischer's aldehyde or tribasic aldehyde), 2-indolaldehyde, 3-indolaldehyde, 1-methylindole-3-aldehyde, 2-methylindole-3-aldehyde, 1-acetylindole-3-aldehyde, 3-acetylindole, 1-methyl-3-acetylindole, 2- (1 '. S '^' - trimethyl ^ -indolinylidene-1-acetaldehyde, 1-methylpyrrole-2-aldehyde, 1-methyl-2-acetylpyrrole, 4-pyridine aldehyde, 2-pyridine aldehyde, 3-pyridine aldehyde, 4-acetylpyridine, 2-acetylpyridine, 3 Acetylpyridine, pyridoxal, quinoline-3-aldehyde, quinoline-4-aldehyde, antipyrin-4-aldehyde, furfural, 5-nitrofurfural, 2-thenoyl-trifluoro-acetone, chromone-3-aldehyde, 3- (5'-nitro) 2'-furyl) -acrolein, 3- (2'-furyl) -acrolein and imidazole-2-aldehyde, 1,3-diacetylbenzene, 1,4-diacetylbenzene, 1,3,5-triacetylbenzene, 2-benzoyl-acetophenone , 2- (4'-methoxybenzoyl) acetophenone, 2- (2'-furoyl) acetophenone, 2- (2'-pyridoyl) acetophenone and 2- (3'-pyridoyl) acetophenone,

Benzylideneacetone, 4-hydroxybenzylideneacetone, 2-hydroxybenzylideneacetone, 4-methoxybenzylideneacetone, 4-hydroxy-3-methoxybenzylideneacetone, 4-dimethylaminobenzylideneacetone, 3,4-methylenedioxybenzylideneacetone, 4-pyrrolidinobenzylideneacetone, 4-piperidinobenzylideneacetone, 4-morpholinobenzylideneacetone, 4- Diethylaminobenzylideneacetone, 3-benzylidene-2,4-pentanedione, 3- (4'-hydroxybenzylidene) -2,4-pentanedione, 3- (4'-dimethylaminobenzylidene) -2,4-pentanedione, 2-benzylidenecyclohexanone, 2- (4 '-Hydroxybenzylidene) cyclohexanone, 2- (4'-dimethylaminobenzylidene) cyclohexanone, 2-benzylidene-1, 3-cyclohexanedione, 2- (4'-hydroxybenzylidene) -1,3-cyclohexanedione, 3- ( 4'-dimethylaminobenzylidene) -1, 3-cyclohexanedione, 2-benzylidene-5,5-dimethyl-1,3-cyclohexanedione, 2- (4'-hydroxybenzylidene) -5,5-dimethyl-1,3-cyclohexanedione, 2 - (4'-hydroxy-3-methoxybenzylidene) -5,5-dimethyl-1,3-cyclohexanedione, 2- (4'-dimethylaminobenzylidene) -5,5-dimethyl-1,3-cyclohexanedione, 2-benzylidenecyclopentanone , 2 '- (4-hydroxybenzylidene) -cyclopene tanon, 2- (4'-dimethylaminobenzylidene) cyclopentanone,

5- (4-dimethylaminophenyl) penta-2,4-dienal, 5- (4-diethylaminophenyl) penta-2,4-dienal, 5- (4-methoxyphenyl) penta-2,4-dienal, 5- (3, 4-dimethoxyphenyl) penta-2,4-dienal, 5- (2,4-dimethoxyphenyl) penta-2,4-dienal, 5- (4-piperidinophenyl) penta-2,4-dienal, 5- (4 Morpholinophenyl) penta- 2,4-dienal, 5- (4-pyrrolidinophenyl) penta-2,4-dienal,

6- (4-Dimethylaminophenyl) hexa-3,5-dien-2-one, 6- (4-diethylaminophenyl) hexa-3,5-dien-2-one, 6- (4-methoxyphenyl) hexa-3,5 -dien-2-one, 6- (3,4-dimethoxyphenyl) hexa-3,5-dien-2-one, 6- (2,4-dimethoxyphenyl) hexa-3,5-dien-2-one , 6- (4-Piperidinophenyl) hexa-3,5-dien-2-one, 6- (4-morpholinophenyl) -hexa-3,5-dien-2-one, 6- (4-pyrrolidinophenyl) hexa-3 , 5-diene-2-one,

5- (4-Dimethylamino-1-naphthyl) penta-3,5-dienal, 2-nitrobenzaldehyde, 3-nitrobenzaldehyde, 4-nitrobenzaldehyde, 4-methyl-3-nitrobenzaldehyde, 3-hydroxy-4-nitrobenzaldehyde, 4-hydroxy -3-nitrobenzaldehyde, 5-hydroxy-2-nitrobenzaldehyde, 2-hydroxy-5-nitrobenzaldehyde, 2-hydroxy-3-nitrobenzaldehyde, 2-fluoro-3-nitrobenzaldehyde, 3-methoxy-2-nitrobenzaldehyde, 4-chloro-3 nitrobenzaldehyde, 2-chloro-6-nitrobenzaldehyde, 5-chloro-2-nitrobenzaldehyde, 4-chloro-2-nitrobenzaldehyde, 2,4-dinitrobenzaldehyde, 2,6-dinitrobenzaldehyde, 2-hydroxy-3-methoxy-5-nitrobenzaldehyde , 4,5-dimethoxy-2-nitrobenzaldehyde, 6-nitropiperonal, 2-nitropiperonal, 5-nitrovanillin, 2,5-dinitrosalicylaldehyde, 5-bromo-3-nitrosalicylaldehyde, 3-nitro-4-formyl- benzenesulfonic acid, 4-nitro-1-naphthaldehyde, 2-nitrocinnamaldehyde, 3-nitrocinnamaldehyde, 4-nitrocinnamaldehyde, 9-methyl-3-carbazolaldehyde, 9-ethyl-3-carbazolaldehyde, 3-acetylcarbazole, 3,6-diacetyl-9- ethylcarbazole, S-acetyl-θ-methylcarbazole, 1,4-dimethyl-3-carbazolaldehyde, 1, 4,9-trimethyl-3-carbazolaldehyde,

4-Formyl-1-methylpyridinium, 2-formyl-1-methylpyridinium, 4-formyl-1-ethylpyridinium, 2-formyl-1-ethylpyridinium, 4-formyl-1-benzylpyridinium, 2-formyl-1 benzylpyridinium, 4-formyl-1,2-dimethylpyridinium, 4-formyl-1,3-dimethylpyridinium, 4-formyl-1-methylquinolinium, 2-formyl-1-methylquinolinium, 4-acetyl-1 methylpyridinium, 2-acetyl-1-methylpyridinium, A-acetyl-1-methylquinolinium, 5-formyl-i-methylquinolinium, 6-formyl-i-methylquinolinium, 7-formyl-1-methylquinolinium, 8- Formyl-i-methyl-quinolinium, 5-formyl-i-ethylquinolinium, 6-formyl-1-ethylquinolinium, 7-formyl-1-ethylquinolinium, 8-formyl-1-ethylquinolinium, 5-formyl-1-benzylquinolinium, 6-formyl-i-benzylquinolinium, 7-formyl-i-benzylquinolinium, 8-formyl-1-benzylquinolinium, 5-formyl-i-allylquinolinium, 6-formyl-i-allylquinolinium, 7-formyl-1 allyl-quinolinium and 8-formyl-i-allyl-quinolinium, δ-acetyl-1-methyl-quinolinium, 6-acetyl-1-methylquinolinium, 7-acetyl-1-methylquinolinium, 8-acetyl i-methylquinolinium, 5-acetyl-1-ethylquinolinium, 6-acetyl-1-ethylquinolinium, 7-acetyl-1-ethylquinolinium, 8-acetyl-1-ethylquinolinium, 5-acetyl-1-benzylquinolinium, 6 Acetyl-i-benzyl-quinolinium, 7-acetyl-1-benzyl-quinolinium, 8-acetyl-1-benzyl-quinolinium, 5-acetyl-1-allyl-quinolinium, 6-acetyl-1-allyl-quinolinium, 7-acetyl-1-allyl-quinolinium and 8-acetyl-i-allylquinolinium, 9-formyl-10-methylacridinium, 4- (2'-formylvinyl) -1-methylpyridinium, 1, 3-dimethyl-2- (4'-formylphenyl) -benzimidazo - lium, 1, 3-dimethyl-2- (4'-formylphenyl) imidazolium, 2- (4'-formylphenyl) -3-methylbenzothiazolium, 2- (4'-acetylphenyl) -3-methylbenzothiazolium - 2- (4'-formylphenyl) -3-methyl-benzoxazolium, 2- (5 ^{1-formyl-2'-furyl)} -3-methylbenzothiazolium-, 2- (5'-formyl-2'-furyl) 3-methylbenzothiazolium, 2- (5'-formyl-2'-thienyl) -3-methylbenzothiazolinyl, 2- (3'-formylphenyl) -3-methylbenzothiazolium, 2- (4'-formyl-1-naphthyl ) -3-methylbenzothiazolium, 5-chloro-2- (4'-formylphenyl) -3-methylbenzene zothiazolium, 2- (4'-formylphenyl) -3,5-dimethylbenzothiazolium salts, preferably with benzenesulfonate, p-toluenesulfonate, methanesulfonate, perchlorate, sulfate, chloride, bromide, iodide, tetrachlorozincate, methylsulfate, trifluoromethanesulfonate or tetrafluoroborate as counterion, Isatin, 1-methyl-isatin, 1-allyl-isatin, 1-hydroxymethyl-isatin, 5-chloro-isatin, 5-methoxy-isatin, 5-nitro-isatin, 6-nitro-isatin, 5-sulfo-isatin, 5- Carboxy-isatin, quinisatin, 1-methyl-quinisatin, and any mixtures of the above compounds.

As CH-acidic compounds are generally considered to carry a bound to an aliphatic carbon atom hydrogen atom, wherein due to electron-withdrawing substituents activation of the corresponding carbon-hydrogen bond is effected. Under CH-acidic compounds are also according to the invention Enamines formed by the alkaline treatment of quaternized N-heterocycles with a CH-acidic alkyl group in conjugation to the quaternary nitrogen.

The CH-acidic compounds of component B are preferably selected from the group consisting of I ^ .SS-tetramethyl-SH-indolium iodide, 1, 2,3,3-tetramethyl-3H-indolium p-toluenesulfonate, 1.Σ.SS Tetramethyl SH indolium methanesulfonate, 1,3,3-trimethyl-2-methylenindoline (Fischer's base), 2,3-dimethylbenzothiazolium iodide, 2,3-dimethylbenzothiazolium p-toluenesulfonate, 2,3-dimethyl -naphtho [1,2-d] thiazolium p-toluenesulfonate, 3-ethyl-2-methylnaphtho [1,2-d] thiazolium p-toluenesulfonate, rhodanine, rhodanine-3-acetic acid, 1, 4-

Dimethylquinolinium iodide, 1, 2-dimethylquinolinium iodide, barbituric acid, thiobarbituric acid, 1,3-dimethylthiobarbituric acid, 1,3-diethylthiobarbituric acid, 1,3-diethylbarbituric acid, oxindole, 3-indoxylatoacetate, 2-coumaranone, 5-hydroxybenzoic acid 2-cumaranone, 6-hydroxy-2-cumaranone, 3-methyl-1-phenyl-pyrazolin-5-one, indan-1, 2-dione, indan-1, 3-dione, indan-1-one, benzoylacetonitrile, 3-dicyanomethylenedan-1-one, 2-amino-4-imino-1,3-thiazoline hydrochloride, 5,5-dimethylcyclohexane-1, 3-dione, 2H-1,4-benzoxazin-4H-3-one, 3-ethyl-2-methylbenzoxazolium iodide, 3-ethyl-2-methylbenzothiazolium iodide, 1-ethyl-4-methyl-quinolinium iodide, 1-ethyl-2-methylquinolinium iodide, 1, 2,3-trimethylquinoxaluminum iodide, 3-ethyl 2-methylbenzoxazolium p-toluenesulfonate, 3-ethyl-2-methylbenzothiazolium p-toluenesulfonate, 1-ethyl-4-methyl-quinolinium p-toluenesulfonate, 1-ethyl-2-methylquinolinium p-toluenesulfonate, and 1,2,3-trimethylquinoxaluminum p-toluenesulfonate.

Preferred primary or secondary aromatic amines of component B are selected from N, N-dimethyl-p-phenylenediamine, N, N-diethyl-p-phenylenediamine, N- (2-hydroxyethyl) -N-ethyl-p-phenylenediamine, N, N- Bis (2-hydroxyethyl) -p-phenylenediamine, N- (2-methoxyethyl) -p-phenylenediamine, 2,3-dichloro-p-phenylenediamine, 2,4-dichloro-p-phenylenediamine, 2,5-dichloro p-phenylenediamine, 2-chloro-p-phenylenediamine, 2,5-dihydroxy-4-morpholinoaniline, 2-aminophenol, 3-aminophenol, 4-aminophenol, 2-aminomethyl-4-aminophenol, 2-hydroxymethyl-4-aminophenol, o-phenylenediamine, m-phenylenediamine, p-phenylenediamine, 2,5-diaminotoluene, 2,5-diaminophenol, 2,5-diaminoanisole, 2,5, diaminophenethol, 4-amino-3-methylphenol, 2- (2, 5-diaminophenyl) -ethanol, 2,4-diaminophenoxyethanol, 2- (2,5-diaminophenoxy) ethanol, 3-amino-4- (2-hydroxyethyloxy) phenol, 3,4-methylenedioxyphenol, 3, 4-methylenedioxyaniline, 3-amino-2,4-dichlorophenol, 4-methylaminophenol, 2-methyl-5-aminophenol, 3-methyl-4-aminophenol, 2-methyl-5- (2-hydroxyethyl) amino) phenol, 3-amino-2-chloro-6-methylphenol, 2-methyl-5-amino-4-chlorophenol, 5- (2-hydroxyethylamino) -4-methoxy-2-methylphenol, 4-amino-2- hydroxymethylphenol, 2-

(Diethylaminomethyl) -4-aminophenol, 4-amino-1-hydroxy-2- (2-hydroxyethylaminomethyl) benzene, 1-hydroxy-2-amino-5-methylbenzene, 1-hydroxy-2-amino-6- methylbenzene, 2-amino-5-acetamidophenol, 1, 3-dimethyl-2,5-diaminobenzene, 5- (3-hydroxypropylamino) -2-methylphenol, 5-amino-4-methoxy-2-methylphenol, N, N-dimethyl-3-aminophenol, N-cyclopentyl-3-aminophenol, 5-amino 4-fluoro-2-methylphenol, 2,4-diamino-5-fluorotoluene, 2,4-diamino-5- (2-hydroxyethoxy) -toluene, 2,4-diamino-5-methylphenol, 3,5-diamino 2-methoxy-1-methylbenzene, 2-amino-4- (2-hydroxyethylamino) -anisole, 2,6-bis (2-hydroxyethylamino) -1-methylbenzene, 1, 3-diamino-2,4-diol methoxybenzene, 3,5-diamino-2-methoxy-toluene, 2-aminobenzoic acid, 3-aminobenzoic acid, 4-aminobenzoic acid, 2-aminophenylacetic acid, 3-aminophenylacetic acid, 4-aminophenylacetic acid, 2,3-diaminobenzoic acid, 2,4- Diaminobenzoic acid, 2,5-diaminobenzoic acid, 3,4-diaminobenzoic acid 3,5-diaminobenzoic acid, 4-aminosalicylic acid, 5-aminosalicylic acid, 3-amino-4-hydroxybenzoic acid, 4-amino-3-hydroxybenzoic acid, 2-aminobenzenesulfonic acid , 3-Aminobenzenesulfonic acid, 4-aminobenzenesulfonic acid, 3-amino-4-hydroxybenzenesulfonic acid, 4-amino-3-hydroxynaphthalene-1-sulfonic acid, 6-amino-7-hydroxynaphthalene-2-sulfonic acid, 7-amino-4-hydroxynaphthalene-2 sulfonic acid, 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid, 3-amino-2-one naphthoic acid, 3-aminophthalic acid, 5-aminoisophthalic acid, 1, 3,5-triaminobenzene, 1, 2,4-triaminobenzene, 1, 2,4,5-tetraaminobenzene, 2,4,5-triaminophenol, pentaaminobenzene, hexaaminobenzene, 2,4,6-triaminoresorcinol, 4,5-diaminobrencatechin, 4,6-diaminopyrogallol, 1- (2-hydroxy-5-aminobenzyl) -2-imidazolidinone, 4-amino-2 - ((4 - [(5- amino-2-hydroxyphenyl) methyl] -piperazinyl) methyl) phenol, 3,5-diamino-4-hydroxy-catechol, 1,4-bis (4-aminophenyl) -1,4-diazacycloheptane, aromatic nitriles such as 2-amino 4-hydroxybenzonitrile, 4-amino-2-hydroxybenzonitrile, 4-aminobenzonitrile, 2,4-diaminobenzonitrile, amino groups containing nitro groups, such as 3-amino-6-methylamino-2-nitro-pyridine, picramic acid, [8- [( 4-amino-2-nitrophenyl) -azo] -7-hydroxy-naphth-2-yl] -trimethylammonium chloride, [8 - ((4-amino-3-nitrophenyl) -azo) -7-hydroxy-naphth-2-one yl] trimethylammonium chloride (Basic Brown 17), 1-hydroxy-2-amino-4,6-dinitrobenzene, 1-amino-2-nitro-4- [bis (2-hydroxyethyl) amino] benzene, 1-amino -2 - [(2-hydrox yethyl) amino] -5-nitrobenzene (HC Yellow No. 5), 1-amino-2-nitro-4 - [(2-hydroxyethyl) amino] benzene (HC Red No. 7), 2-chloro-5 nitro-N-2-hydroxyethyl-1,4-phenylenediamine, 1 - [(2-hydroxyethyl) amino] -2-nitro-4-aminobenzene (HC Red No. 3), 4-amino-3-nitrophenol, 4-amino-2-nitrophenol, 6-nitro-o-toluidine, 1-amino-3-methyl-4 - [(2-hydroxyethyl) amino] -6-nitrobenzene (HC Violet No. 1), 1-amino- 2-nitro-4 - [(2,3-dihydroxypropyl) amino] -5-chlorobenzene (HC Red # 10), 2- (4-amino-2-nitroanilino) benzoic acid, 6-nitro-2, 5-diaminopyridine, 2-amino-6-chloro-4-nitrophenol, 1-amino-2- (3-nitrophenylazo) -7-phenylazo-8-naphthol-3,6-disulfonic acid disodium salt (Acid blue No. 29), 1-Amino-2- (2-hydroxy-4-nitrophenylazo) -8-naphthol-3,6-disulfonic acid disodium salt (Palatinchrome green), 1-amino-2- (3-chloro-2-hydroxy-5-nitrophenylazo) 8-naphthol-3,6-disulfonic acid disodium salt (gallium), 4-amino-4'-nitrostilbene-2,2'-disulfonic acid disodium salt, 2,4-diamino-3 ', 5'-dinitro-2'-hydroxy 5-methylazobenzene (Mordant brown 4), 4'-amino-4-nitrodiphenylamine-2-sulfonic acid, 4'-amino-3'-nitrobenzophenone-2-carboxylic acid, 1-amino-4-nitro-2- (2-nitrobenzylideneamino) -benzene, 2- [2- (Diethylamino) ethylamino] -5-nitroaniline, 3-amino-4-hydroxy-5-nitrobenzenesulfonic acid, 3-amino-3'-nitrobiphenyl, 3-amino-4-nitro-acenaphthene, 2-amino-1-nitronaphthalene , 5-amino-6-nitrobenzo-1, 3-dioxole, anilines, especially nitro-containing Anilines such as 4-nitroaniline, 2-nitroaniline, 1, 4-diamino-2-nitrobenzene, 1, 2-diamino-4-nitrobenzene, 1-amino-2-methyl-6-nitrobenzene, 4-nitro-1, 3 -phenylenediamine, 2-nitro-4-amino-1- (2-hydroxyethylamino) -benzene, 2-nitro-1-amino-4- [bis (2-hydroxyethyl) amino] benzene, 4-amino -2-nitrodiphenylamine-2'-carboxylic acid, 1-amino-5-chloro-4- (2-hydroxyethylamino) -2-nitrobenzene, aromatic anilines or phenols with a further aromatic radical, as shown in the formula II

in the

R ^{7 is} a hydroxy or an amino group which may be substituted by C _1-4 -alkyl, C _1-4 -hydroxyalkyl, C _1-4 -alkoxy or C _1-4 -alkoxy-d 1-4 -alkyl groups, stands,

• R ^8, R ^9, R ^10, R ¹¹ and R ¹² independently represent a hydrogen atom, a hydroxy or an amino group represented by C _r C ₄ alkyl, dC ^ hydroxyalkyl, C ₁ -C ₄ -AIkOXy- , C ₁ -C ₄ - aminoalkyl or CrCrAlkoxy-CrC ^ alkyl groups may be substituted, and

P is a direct bond, a saturated or unsaturated, optionally substituted by hydroxy groups carbon chain having 1 to 4 carbon atoms, a carbonyl, sulfoxy, sulfonyl or imino group, an oxygen or sulfur atom, or a group having the formula IM

-Q '- (CH ₂ -Q-CH ₂ -Q ") _O - (III)

in the

Q signifies a direct bond, a CH ₂ or CHOH group,

• Q 'and Q "independently represent an oxygen atom, an NR ¹³ group, wherein R ^{13 represents} a hydrogen atom, a C _1-4 alkyl or a hydroxyC _1-4 alkyl group, both of which together with the Residual molecule can form a 5-, 6- or 7-membered ring, means the group O- (CH ₂ ) _P -NH or NH- (CH ₂ ) _P -O, wherein p and p ^{1 are} 2 or 3, and

O is a number from 1 to 4,

such as 4,4'-diaminostilbene and its hydrochloride, 4,4'-diaminostilbene-2,2'-disulphonic acid mono- or di-Na salt, 4-amino-4'-dimethylaminostilbene and its hydrochloride, 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylsulfide, 4,4'-diaminodiphenylsulfoxide, 4,4'-diaminodiphenylamine, 4,4'-diaminodiphenylamine-2-sulfonic acid, 4,4'-diaminobenzophenone, 4,4 ' - Diaminodiphenyl ether, 3,3 ', 4,4'-tetraaminodiphenyl, S.S' ^^ '- tetraamino-benzophenone, 1, 3-bis- (2,4-diaminophenoxy) -propane, 1, 8-bis- (2 , 5-diaminophenoxy) -3,6-dioxaoctane, 1, 3-bis (4-aminophenylamino) propane, 1,1,3-bis (4-aminophenylamino) -2-propanol, 1,3-bis- [N- (4-aminophenyl) -2-hydroxyethylamino] -2-propanol, N, N-bis [2- (4-aminophenoxy) ethyl] methylamine, N-phenyl-1, 4-phenylenediamine and bis- (5-amino-2-hydroxyphenyl) methane.

The abovementioned compounds can be used both in free form and in the form of their physiologically compatible salts, in particular as salts of inorganic acids, such as hydrochloric or sulfuric acid.

Suitable nitrogen-containing heterocyclic compounds are, for. B. 2-aminopyridine, 3-aminopyridine, 4-aminopyridine, 2-amino-3-hydroxy-pyridine, 2,6-diamino-pyridine, 2,5-diamino-pyridine, 2- (aminoethylamino) -5-aminopyridine, 2,3-diamino-pyridine, 2-dimethylamino-5-amino-pyridine, 2-methylamino-3-amino-6-methoxy-pyridine, 2,3-diamino-6-methoxy-pyridine, 2,6-dimethoxy 3,5-diamino-pyridine, 2,4,5-triamino-pyridine, 2,6-dihydroxy-3,4-dimethyl-pyridine, N- [2- (2,4-diaminophenyl) aminoethyl] -N- (5- amino-2-pyridyl) amine, N- [2- (4-aminophenyl) aminoethyl] -N- (5-amino-2-pyridyl) amine, 2,4-dihydroxy-5,6-diaminopyrimidine, 4, 5,6-triaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,4,5,6-tetraaminopyrimidine, 2-methylamino-4, 5,6-triaminopyrimidine, 2,4-diaminopyrimidine, 4,5-diaminopyrimidine, 2-amino-4-methoxy-6-methyl-pyrimidine, 3,5-diaminopyrazole, SS-diamino-1-.alpha.-triazole, 3 -Aminopyrazole, 3-amino-5-hydroxypyrazole, 1-phenyl-4,5-diaminopyrazole, 1- (2-hydroxyethyl) -4,5-diaminopyrazole, 1-phenyl-3-methyl-4,5-diaminopyrazole, 4 -amino-2 3-dimethyl-1-phenyl-3-pyrazolin-5-one (4-aminoantipyrine), 1-phenyl-3-methylpyrazol-5-one, 2-aminoquinoline, 3-aminoquinoline, 8-aminoquinoline, 4-aminoquinaldine , 2-aminonicotinic acid, 6-aminonicotinic acid, 5-aminoisoquinoline, 5-aminoindazole, 6-aminoindazole, 5-aminobenzimidazole, 7-aminobenzimidazole, 5-aminobenzothiazole, 7-aminobenzothiazole, 2,5-dihydroxy-4-morpholino-aniline and indole and indoline derivatives such as 4-aminoindole, 5-aminoindole, 6-aminoindole, 7-aminoindole, 5,6-dihydroxyindole, 5,6-dihydroxyindoline and 4-hydroxyindoline. Furthermore, as heterocyclic compounds, the hydroxypyrimidines disclosed in DE-U 1-299 08 573 can be used according to the invention. The aforementioned compounds can be used both in free form and in the form of their physiologically acceptable salts, for. B. as salts of inorganic acids, such as hydrochloric or sulfuric acid, are used.

Suitable aromatic hydroxy compounds are, for. 2-methylresorcinol, 4-methylresorcinol, 5-methylresorcinol, 2,5-dimethylresorcinol, resorcinol, 3-methoxyphenol, pyrocatechol, hydroquinone, pyrogallol, phloroglucinol, hydroxyhydroquinone, 2-methoxyphenol, 3-methoxyphenol, 4-methoxyphenol, 3 Dimethylaminophenol, 2- (2-hydroxyethyl) phenol, 3,4-methylenedioxyphenol, 2,4-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, 2,4-dihydroxy-phenylacetic acid, 3,4-dihydroxyphenylacetic acid, gallic acid, 2,4,6-trihydroxybenzoic acid, 2,4,6-trihydroxyace-tophenone, 2- Chlororesorcinol, 4-chlororesorcinol, 1-naphthol, 1, 5-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 6-dimethylamino-4-hydroxy-2-naphthalenesulfonic acid and 3,6-dihydroxy-2, 7-naphthalene sulfonic acid.

The compounds of the component A and the compounds of the component B are preferably used in the color-changing agent each in an amount of 0.03 to 65 mmol, especially from 1 to 40 mmol, based on 100 g of the total color-changing agent. The molar ratio of the compound of component A and the compound of component B may range from 0.5 to 2.0, preferably using equimolar amounts. The actual color-changing agent is prepared by separate mixing of components A and B immediately before use.

As precursors of naturally-analogous dyes, preference is given to using, as oxidizing dye precursor of the developer type, indoles and indolines which have at least one hydroxy or amino group, preferably as a substituent on the six-membered ring. These groups may carry further substituents, e.g. Example in the form of etherification or esterification of the hydroxy group or alkylation of the amino group. In a second preferred embodiment, the color changing agents contain at least one indole and / or indoline derivative.

Particularly suitable precursors of naturally-analogous hair dyes are derivatives of 5,6-dihydroxyindoline of the formula (IVa),

in the independently of each other

R ¹ is hydrogen, a C 1 -C 4 alkyl group or a C 1 -C 4 hydroxyalkyl group, R ² is hydrogen or a -COOH group, where the -COOH group may also be in the form of a salt with a physiologically compatible cation, R ³ is hydrogen or a C 1 -C 4 alkyl group, R ⁴ is hydrogen, a dC ₄ alkyl group or a group -CO-R ⁶ in which R ⁶ represents an alkyl group CrC _t, and

R ⁵ is one of the groups mentioned under R ⁴ , as well as physiologically acceptable salts of these compounds with an organic or inorganic acid.

Particularly preferred derivatives of indoline are 5,6-dihydroxyindoline, N-methyl-5,6-dihydroxyindoline, N-ethyl-5,6-dihydroxyindoline, N-propyl-5,6-dihydroxyindoline,

N-butyl-5,6-dihydroxyindoline, 5,6-dihydroxyindoline-2-carboxylic acid and 6-hydroxyindoline, 6-aminoindoline and 4-aminoindoline.

Particularly noteworthy within this group are N-methyl-5,6-dihydroxyindoline, N-ethyl-5,6-dihydroxyindoline, N-propyl-5,6-dihydroxyindoline, N-butyl-5,6-dihydroxyindoline and especially 5, 6-Dihydroxyindolin.

Also suitable as precursors of naturally-analogous hair dyes are derivatives of the 5,6-dihydroxyindole of the formula (IVb),

(IVb) in the independently

R ¹ is hydrogen, a C 1 -C ₄ -alkyl group or a C 1 -C ₄ -hydroxyalkyl group,

R ² is hydrogen or a -COOH group, wherein the -COOH group may also be present as a salt with a physiologically compatible cation,

R ³ is hydrogen or a C 1 -C ₄ -alkyl group,

R ⁴ is hydrogen, a C ₁ -C ₄ alkyl group or a group -CO-R ⁶ , in which R ⁶ is

R ⁵ is one of the groups mentioned under R ⁴ , as well as physiologically acceptable salts of these compounds with an organic or inorganic acid. Particularly preferred derivatives of indole are 5,6-dihydroxyindole, N-methyl-5,6-dihydroxyindole, N-ethyl-5,6-dihydroxyindole, N-propyl-5,6-dihydroxyindole, N-butyl-5,6- dihydroxyindole, 5,6-dihydroxyindole-2-carboxylic acid, 6-hydroxyindole, 6-aminoindole and 4-aminoindole.

Emphasized within this group are N-methyl-5,6-dihydroxyindole, N-ethyl-5,6-dihydroxyindole, N-propyl-5,6-dihydroxyindole, N-butyl-5,6-dihydroxyindole, and especially the 5,6 -Dihydroxyindol.

Preferred substantive dyes which are used as color-modifying components are nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones or indophenols. Preferred substantive dyes are those having the international designations or trade names HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, Acid Yellow 1, Acid Yellow 10, Acid Yellow 23, Acid Yellow 36, HC Orange Disperse Orange 3, Acid Orange 7, HC Red 1, HC Red 3, HC Red 10, HC Red 11, HC Red 13, Acid Red 33, Acid Red 52, HC Red BN, Pigment Red 57: 1, HC Blue 2, HC Blue 12, Disperse Blue 3, Acid Blue 7, Acid Green 50, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Acid Violet 43, Disperse Black 9, Acid Black 1, and Acid Black 52 known compounds as well as 1 , 4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1, 4-bis- (β-hydroxyethyl) amino-2-nitrobenzene, 3-nitro-4- (β-hydroxyethyl) aminophenol, 2- 2'-hydroxyethyl) amino-4,6-dinitrophenol, 1- (2'-hydroxyethyl) amino-4-methyl-2-nitrobenzene, 1-amino-4- (2'-hydroxyethyl) amino-5-chloro-2 -nitrobenzene, 4-amino-3-nitrophenol, 1- (2'-ureidoethyl) amino-4-nitrobenzene, 4-amino-2-nitrodiphenylamine-2'-carbon acid, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid and 2-chloro-6-ethylamino-1-hydroxy-4-nitrobenzene.

Furthermore, the color-changing agents of the process according to the invention may contain a cationic substantive dye. Particularly preferred are

(a) cationic triphenylmethane dyes such as Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14,

(b) aromatic systems substituted with a quaternary nitrogen group, such as Basic Yellow 57, Basic Red 76, Basic Blue 99, Basic Brown 16 and Basic Brown 17, as well as

(c) substantive dyes containing a heterocycle having at least one quaternary nitrogen atom, as mentioned, for example, in EP-A2-998 908, which is incorporated herein by reference, in claims 6 to 11. Preferred cationic substantive dyes of group (c) are in particular the following compounds:

CH ₃ SO ₄ ^"

Cl ^"

The compounds of the formulas (DZ1), (DZ3) and (DZ5), which are also known by the names Basic Yellow 87, Basic Orange 31 and Basic Red 51, are very particularly preferred cationic substantive dyes of group (c).

The cationic substantive dyes sold under the trademark Arianor are also very particularly preferred cationic substantive dyes according to the invention. The color changing agents preferably contain the direct dyes in an amount of 0.01 to 20% by weight based on the color change agent ready for use.

Furthermore, the preparations of the invention may also naturally occurring dyes such as henna red, henna neutral, henna black, chamomile, sandalwood, black tea, buckthorn bark, sage, bluewood, madder root, Catechu, Sedre and alkano root are included.

It is not necessary for the oxidation dye precursors or the direct dyes to be in each case homogeneous compounds. Rather, in the compositions according to the invention, due to the production process for the individual dyes, minor amounts of other components may be included, as far as they do not adversely affect the dyeing result or for other reasons, e.g. toxicological, must be excluded.

With regard to further optional components as well as the amounts of these components used, reference is expressly made to the relevant manuals known to the person skilled in the art, eg. B. Kh. Schrader, bases and formulations of cosmetics, 2nd edition, Hüthig book publisher, Heidelberg, 1989, referenced.

In general, an oxidative dyeing can be carried out in the presence of atmospheric oxygen in the presence of oxidation dye precursors. Preferably, however, a chemical oxidizing agent is used, especially if, in addition to the coloring, a whitening effect of the natural pigments of the human hair is desired. This lightening effect may be desired regardless of the staining method. Accordingly, the presence of oxidation dye precursors is not a mandatory requirement for the use of oxidizing agents in the cosmetic compositions of the process according to the invention. The oxidizing agent used is in particular hydrogen peroxide and / or at least one addition product thereof, in particular to inorganic or organic compounds, such as, for example, sodium perborate, sodium percarbonate, magnesium percarbonate, sodium percarbamide,

Polyvinylpyrrolidone n H ₂ O ₂ (n is a positive integer greater than 0), urea peroxide and melamine peroxide in question. The actual colorant is prepared by separate storage of the dye precursors and the oxidizing agent immediately before use by mixing. In a preferred embodiment of the method according to the invention, therefore, the color-changing agent before application of a composition containing in a cosmetic carrier at least one color-changing component, and another A composition containing at least one oxidizing agent mixed in a cosmetic carrier.

The actual (oxidative) hair dyes is advantageously immediately before application by mixing a separate oxidizing agent composition with the contained color-changeable emden components ^• composition, preferably in a weight ratio ranging from 1: 4 to 4: 1, especially from 1 to 2 to 1, made up. 2

According to the invention, the colorant may also be applied to the hair together with a catalyst which promotes the oxidation of the dye precursors, e.g. by atmospheric oxygen, activated. Such catalysts are e.g. Metal ions, iodides, quinones or certain enzymes. The catalysts can also be used in the presence of an oxidizing agent.

Suitable metal ions are, for example, Zn ²⁺ , Cu ²⁺ , Fe ²⁺ , Fe ³⁺ , Mn ²⁺ , Mn ⁴⁺ , Li ⁺ , Mg ²⁺ , Ca ²⁺ and Al ³⁺ . Particularly suitable are Zn ²⁺ , Cu ²⁺ and Mn ²⁺ . The metal ions can in principle be used in the form of any physiologically acceptable salt or in the form of a complex compound. Preferred salts are the acetates, sulfates, halides, lactates and tartrates. By using these metal salts, both the formation of the dyeing can be accelerated and the color shade can be specifically influenced.

Suitable enzymes are e.g. Peroxidases that can significantly increase the effect of small amounts of hydrogen peroxide. Furthermore, such enzymes are suitable according to the invention which directly oxidize the oxidation dye precursors with the aid of atmospheric oxygen, such as, for example, the laccases, or generate small amounts of hydrogen peroxide in situ and thus biocatalytically activate the oxidation of the dye precursors. Particularly suitable catalysts for the oxidation of the dye precursors are the so-called 2-electron oxidoreductases in combination with the specific substrates, e.g.

Pyranose oxidase and e.g. D-glucose or galactose,

Glucose oxidase and D-glucose,

Glycerol oxidase and glycerin,

Pyruvate oxidase and pyruvic acid or its salts, - alcohol oxidase and alcohol (MeOH, EtOH),

Lactate oxidase and lactic acid and their salts,

Tyrosinase oxidase and tyrosine,

Uricase and uric acid or their salts,

Choline oxidase and choline,

Amino acid oxidase and amino acids. In an application of oxidizing agents, the ready-to-use composition is conveniently prepared immediately prior to use by mixing a composition containing the oxidizing agent with the composition containing the color-changing components. The resulting ready-to-use hair dye preparation should preferably have a pH in the range of 6 to 12. Particularly preferred is the use of the colorants in a weakly alkaline medium.

For a color change by means of lightening or bleaching of the hair, at least one bleach booster is additionally preferably used in addition to the oxidizing agents.

Bleach boosters are preferably used in bleaching agents for increasing the bleaching action of the oxidizing agent, in particular the hydrogen peroxide.

As bleach amplifiers, it is possible to use compounds which, under perhydrolysis conditions, give aliphatic peroxycarboxylic acids having preferably 1 to 10 C atoms, in particular 2 to 4 C atoms, and / or optionally substituted perbenzoic acid. Suitable substances are those which carry O- and / or N-acyl groups of the stated C atom number and / or optionally substituted benzoyl groups. Preference is given to polyacylated alkylene diamines, especially tetraacetylethylenediamine (TAED) ₁ acylated triazine derivatives, in particular 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine (DADHT) ₁ acylated glycolurils, in particular tetraacetylglycoluril (TAGU), N-acylimides, in particular N-nonanoylsuccinimide (NOSI), acylated phenolsulfonates, especially n-nonanoyl or isononanoyloxybenzenesulfonate (n- or iso-NOBS) ₁ carboxylic acid anhydrides, in particular phthalic anhydride, acylated polyhydric alcohols, in particular triacetin, ethylene glycol diacetate and 2,5- diacetoxy-2,5-dihydrofuran.

Bleach amplifiers are preferably peroxo compounds. Among the bleach-enhancing peroxy compounds according to the invention there are no addition products of hydrogen peroxide to other components and also not hydrogen peroxide itself. Moreover, the choice of peroxo compounds is subject to no restrictions. Preferred peroxo compounds are peroxydisulfate salts, monopersulfate salts (especially ammonium peroxydisulfate, potassium peroxodisulfate, sodium peroxodisulfate, ammonium monopersulfate, potassium monopersulfate, sodium monopersulfate, potassium peroxydiphosphate) and peroxides (such as barium peroxide, calcium peroxide and magnesium peroxide). Among these peroxo compounds, which can also be used in combination, the inorganic compounds are preferred according to the invention. Particularly preferred are the peroxydisulfates, in particular ammonium peroxydisulfate. The bleaching enhancers are contained in the ready-to-use color-changing agents used according to the invention preferably in amounts of 5-30% by weight, in particular in amounts of 8-20% by weight.

The color-changing agents of the process of the present invention, when acting as a bleaching agent, contain as preferred alkalizing agent at least one compound selected from ammonia, ammonium, alkali metal and alkaline earth metal hydroxides, carbonates, bicarbonates, hydroxycarbonates, metasilicates and carbamides, and Alkali phosphates and alkanolamines such as 2-ethanolamine.

The ready-to-use color-changing agent should preferably have a pH in the range from pH 6 to pH 12, in particular from pH 7.5 to pH 11, in the embodiment as dyeing or bleaching agent.

The color-changing agents may additionally contain all known and commonly used active ingredients and auxiliaries in these fields.

In many cases, the color-changing agents additionally contain at least one surfactant, whereby in principle both anionic and zwitterionic, ampholytic, nonionic and cationic surfactants are suitable. In many cases, however, it has proved to be advantageous to select the surfactants from anionic, zwitterionic or nonionic surfactants.

Suitable anionic surfactants in preparations according to the invention are all anionic surfactants suitable for use on the human body. These are characterized by a water-solubilizing, anionic group such. Example, a carboxylate, sulfate, sulfonate or phosphate group and a lipophilic alkyl group with about 10 to 22 C-men men. In addition, glycol or polyglycol ether groups, ester, ether and amide groups and hydroxyl groups may be present in the molecule. Examples of suitable anionic surfactants are, in each case in the form of the sodium, potassium and ammonium as well as mono-, di- and trialkanol ammonium salts with 2 or 3 C atoms in the alkanol group, linear fatty acids having 10 to 22 C atoms (Soaps), anionic alkyl oligoglycosides or anionic alkenyl oligoglycoside derivatives selected from alkyl and / or alkenyl oligoglycoside carboxylates, sulfates, phosphates and / or isethionates derived from alkyl and / or alkenyl oligoglycosides of general formula (V) deduce

with the meaning

RC _6-22 -A ^ yI or C ^ r alkenyl,

G glycoside unit which is derived from a sugar containing 5 or 6 carbon atoms, p number from 1 to 10, in particular the Laurylglucosidcarboxylat, it is available as Plantapon ^® LGC from Cognis Germany like.

Ethercarbonsäuren the formula RO- (CH ₂ -CH ₂ O) _x -CH ₂ -COOH, in which R is a linear alkyl group having 10 to 22 carbon atoms and x = O or 1 to 16, acylsarcosides having 10 to 18 C Atoms in the acyl group, acyltaurides having 10 to 18 C atoms in the acyl group, acyl isethionates having 10 to 18 C atoms in the acyl group,

Sulfobernsteinsäuremono- and dialkyl esters having 8 to 18 carbon atoms in the alkyl group and sulfosuccinic monoalkylpolyoxyethylester having 8 to 18 carbon atoms in the alkyl group and 1 to 6 oxyethyl groups, linear alkanesulfonates having 12 to 18 carbon atoms, linear alpha-olefinsulfonates with 12 to 18 carbon atoms, alpha-sulfofatty acid methyl esters of fatty acids having 12 to 18 carbon atoms, alkyl sulfates and Alkylpolyglykolethersulfate the formula RO (CH ₂ -CH ₂ O) _x -SO ₃ H, in the R is a preferably linear alkyl group with 10 bis 18 C-atoms and x = O or 1 to 12, mixtures of surface-active hydroxysulfonates according to DE-A-37 25 030, sulfated hydroxyalkylpolyethylene and / or hydroxyalkylene-propylene glycol ethers according to DE-A-37 23 354,

Sulfonates of unsaturated fatty acids having 12 to 24 carbon atoms and 1 to 6 double bonds according to DE-A-39 26 344,

Esters of tartaric acid and citric acid with alcohols which are adducts of about 2-15 molecules of ethylene oxide and / or propylene oxide with fatty alcohols having 8 to 22 carbon atoms.

Preferred anionic surfactants are alkyl sulfates, alkyl polyglycol ether sulfates and ether carboxylic acids having 10 to 18 carbon atoms in the alkyl group and up to 12 glycol ether groups in the molecule and in particular salts of saturated and in particular unsaturated C ₈ -C ₂₂ carboxylic acids, such as oleic acid, stearic acid, isostearic acid and palmitic acid , Nonionic surfactants contain as hydrophilic group z. A polyol group, a polyalkylene glycol ether group or a combination of polyol and polyglycol ether groups. Such compounds are, for example

Addition products of 2 to 30 moles of ethylene oxide and / or 0 to 5 moles of propylene oxide to linear fatty alcohols having 8 to 22 carbon atoms, to fatty acids having 12 to 22 carbon atoms and on

Alkylphenols having 8 to 15 C atoms in the alkyl group,

C ₂ -C ₂₂ -fatty acid mono- and diesters of addition products of 1 to 30 mol

Ethylene oxide with glycerine,

C ₈ -C ₂₂ alkyl mono- and oligoglycosides and their ethoxylated analogs and

Addition products of 5 to 60 moles of ethylene oxide with castor oil and hydrogenated castor oil.

Preferred nonionic surfactants are alkyl polyglycosides of the general formula R ¹ O- (Z) _x . These connections are identified by the following parameters.

The alkyl radical R ¹ contains 6 to 22 carbon atoms and may be both linear and branched. Preference is given to primary linear and methyl-branched in the 2-position aliphatic radicals. Such alkyl radicals are, for example, 1-octyl, 1-decyl, 1-lauryl, 1-myristyl, 1-cetyl and 1-stearyl. Particularly preferred are 1-octyl, 1-decyl, 1-lauryl, 1-myristyl. When using so-called "oxo-alcohols" as starting materials, compounds with an odd number of carbon atoms in the alkyl chain predominate.

The alkyl polyglycosides which can be used according to the invention can contain, for example, only one particular alkyl radical R ¹ . Usually, however, these compounds are prepared starting from natural fats and oils or mineral oils. In this case, the alkyl radicals R are mixtures corresponding to the starting compounds or corresponding to the particular work-up of these compounds.

Particular preference is given to those alkylpolyglycosides in which R ¹ consists essentially of C ₈ and C ₁₀ -alkyl groups, essentially of C ₁₂ and C ₁₄ -alkyl groups, essentially of C ₈ to C ₆ -alkyl groups or essentially of C ₁₂ - to C ₁₆ alkyl groups.

As sugar building block Z it is possible to use any desired mono- or oligosaccharides. Usually, sugars with 5 or 6 carbon atoms and the corresponding oligosaccharides are used. Such sugars are, for example, glucose, fructose, galactose, arabinose, ribose, xylose, lyxose, allose, altrose, mannose, gulose, idose, talose and Sucrose. Preferred sugar building blocks are glucose, fructose, galactose, arabinose and sucrose; Glucose is particularly preferred.

The alkyl polyglycosides which can be used according to the invention contain on average from 1.1 to 5 sugar units. Alkyl polyglycosides having x values of 1.1 to 1.6 are preferred. Very particular preference is given to alkyl glycosides in which x is 1: 1 to 1, 4.

In addition to their surfactant action, the alkyl glycosides can also serve to improve the fixation of fragrance components on the hair. The person skilled in the art will therefore prefer to use this substance class as a further constituent of the preparations according to the invention in the event that an effect of the perfume oil on the hair which exceeds the duration of the hair treatment is desired.

The alkoxylated homologs of said alkyl polyglycosides can also be used according to the invention. These homologs may contain on average up to 10 ethylene oxide and / or propylene oxide units per alkyl glycoside unit.

Furthermore, zwitterionic surfactants can be used, in particular as cosurfactants. Zwitterionic surfactants are those surface-active compounds which carry at least one quaternary ammonium group and at least one -COO ^W or -SO ₃ '^" group in the molecule. Particularly suitable zwitterionic surfactants are the so-called betaines such as N-alkyl-N, N-dimethylammonium glycinates, for example cocoalkyldimethylammonium glycinate, N-acylaminopropyl-N, N-dimethylammonium glycinates, for example cocoacylaminopropyl-dimethylammonium glycinate, and Alkyl-3-carboxylmethyl-3-hydroxyethyl imidazolines having in each case 8 to 18 C atoms in the alkyl or acyl group and the coco acylaminoethylhydroxyethylcarboxymethylglycinate. A preferred zwitterionic surfactant is the fatty acid amide derivative known by the INCI name Cocamidopropyl Betaine.

Also particularly suitable as co-surfactants are ampholytic surfactants. Ampholytic surfactants are to be understood as meaning those surface-active compounds which, apart from a C ₈ -C ₁₈ -alkyl or acyl group in the molecule, contain at least one free amino group and at least one -COOH or -SO ₃ H group and which are capable of forming internal salts are. Examples of suitable ampholytic surfactants are 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 having about 8 to 18 C atoms in the alkyl group. Particularly preferred ampholytic surfactants are N-cocoalkylaminopropionate, cocoacylaminoethyl aminopropionate and C ₁₂ - ₁₈ - sarcosine.

According to the invention, the cationic surfactants used are, in particular, those of the quaternary ammonium compound type, the esterquats and the amidoamines.

Preferred quaternary ammonium compounds are ammonium halides, especially chlorides and bromides, such as alkyltrimethylammonium chlorides, dialkyldimethylammonium chlorides and trialkylmethylammonium chlorides, e.g. For example, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylammonium chloride, lauryldimethylbenzylammonium chloride and tricetylmethylammonium chloride, as well as the imidazolium compounds known under the INCI names Quaternium-27 and Quaternium-83. The long alkyl chains of the above-mentioned surfactants preferably have 10 to 18 carbon atoms.

Esterquats are known substances which contain both at least one ester function and at least one quaternary ammonium group as a structural element. Preferred esterquats are quaternized ester salts of fatty acids with triethanolamine, quaternized ester salts of fatty acids with diethanolalkylamines and quaternized ester salts of fatty acids with 1,2-dihydroxypropyldialkylamines. Such products are marketed under the trade names Stepantex® ^{®, ®} and Dehyquart® Armocare® ^®. The products Armocare ^® VGH-70, a N, N-bis (2-palmitoyloxyethyl) dimethylammonium chloride, as well as Dehyquart ^® F-75 and Dehyquart ^® AU-35 are examples of such esterquats.

The alkylamidoamines are usually prepared by amidation of natural or synthetic fatty acids and fatty acid cuts with dialkylaminoamines. An inventively particularly suitable compound from this group is that available under the name Tegoamid ^® S 18 commercially stearamidopropyl dimethylamine.

Further cationic surfactants which can be used according to the invention are the quaternized protein hydrolysates.

Also suitable according to the invention are cationic silicone oils such as, for example, the commercially available products Q2-7224 (manufacturer: Dow Corning, a stabilized trimethylsilylamodimethicone), Dow Corning 929 emulsion (containing a hydroxylamino-modified silicone, also referred to as amodimethicones), SM -2059 (manufacturer: General Electric), SLM-55067 (manufacturer: Wacker) and Abil ^® -Quat 3270 and 3272 (. Manufacturer: Th Goldschmidt; diquaternary polydimethylsiloxanes, quaternium-80).

An example of a suitable cationic surfactant quaternary sugar derivative is the commercial product Glucquat ^® 100, according to INCI nomenclature a "lauryl methyl Gluceth-10 Hydroxypropyl Dimonium Chloride".

The compounds used as surfactant with alkyl groups may each be uniform substances. However, it is generally preferred to use native vegetable or animal raw materials in the production of these substances, so that substance mixtures having different alkyl chain lengths depending on the respective raw material are obtained.

In the case of the surfactants which are adducts of ethylene oxide and / or propylene oxide with fatty alcohols or derivatives of these addition products, both products with a "normal" homolog distribution and those with a narrow homolog distribution can be used. By "normal" homolog distribution are meant mixtures of homologs obtained in the reaction of fatty alcohol and alkylene oxide using alkali metals, alkali metal hydroxides or alkali metal alcoholates as catalysts. Narrowed homolog distributions 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 narrow homolog distribution may be preferred.

In addition, the color-changing agents can contain further active ingredients, auxiliaries and additives, such as, for example, nonionic polymers such as vinylpyrrolidone / vinyl acrylate copolymers, polyvinylpyrrolidone and vinylpyrrolidone / vinyl acetate copolymers and polysiloxanes, cationic polymers such as quaternized cellulose ethers, polysiloxanes with quaternary groups, dimethyldiallylammonium chloride polymers, Acrylamide-dimethyldiallyl-ammonium chloride copolymers, diethyl sulfate quaternized dimethylamino-ethyl methacrylate-vinylpyrrolidone copolymers, vinylpyrrolidone-imidazolinium methochloride copolymers and quaternized polyvinyl alcohol, zwitterionic and amphoteric polymers such as acrylamidopropyltrimethylammonium chloride / acrylate copolymers and Octylacrylamide / methyl methacrylate / tert-butylaminoethyl methacrylate, hydroxypropyl methacrylate copolymers, anionic polymers such as polyacrylic acids, crosslinked polyacrylic acids,

Vinyl acetate / crotonic acid copolymers, vinyl pyrrolidone / vinyl acrylate copolymers,

Vinyl acetate / butyl maleate / isobornyl acrylate copolymers, methyl vinyl ether / maleic anhydride

Copolymers and acrylic acid / ethyl acrylate / N-tert-butyl acrylamide terpolymers,

Structural agents such as maleic acid and lactic acid, hair conditioning compounds such as phospholipids, for example soya lecithin, egg lecithin and cephalins,

Protein hydrolysates, in particular elastin, collagen, keratin, milk protein, soy protein and

Wheat protein hydrolysates, their condensation products with fatty acids and quaternized

protein,

Perfume oils, dimethylisosorbide and cyclodextrins,

Solvents and mediators such as ethanol, isopropanol, ethylene glycol, propylene glycol, glycerol and diethylene glycol, fiber structure-improving agents, in particular mono-, di- and oligosaccharides such as glucose, galactose, fructose, fructose and lactose, quaternized amines such as methyl-1-alkylamidoethyl -2-alkylimidazolinium methosulfate

Defoamers like silicones,

Dyes for staining the agent,

Anti-dandruff agents such as Piroctone Olamine, Zinc Omadine and Climbazole,

Light stabilizers, in particular derivatized benzophenones, cinnamic acid derivatives and

triazines,

Substances for adjusting the pH, such as conventional acids, in particular

Pleasure acids and bases,

Active ingredients such as allantoin, pyrrolidonecarboxylic acids and their salts, and bisabolol,

Vitamins, provitamins and vitamin precursors, in particular those of groups A, B ₃ , B ₅ , B ₆ ,

C, E, F and H,

Plant extracts such as extracts of green tea, oak bark, stinging nettle, witch hazel,

Hops, chamomile, burdock root, horsetail, hawthorn, lime blossom, almond, aloe vera,

Spruce needle, horse chestnut, sandalwood, juniper, coconut, mango, apricot, lime,

Wheat, kiwi, melon, orange, grapefruit, sage, rosemary, birch, mallow,

Meadowfoam, Quendel, Yarrow, Thyme, Melissa, Hauhechel, Coltsfoot, Marshmallow,

Meristem, ginseng and ginger root ,.

Cholesterol,

Bodying agents such as sugar esters, polyol esters or polyol alkyl ethers,

Fats and waxes such as spermaceti, beeswax, montan wax and paraffins,

fatty acid,

Complexing agents such as EDTA, NTA, β-alaninediacetic acid and phosphonic acids, Swelling and penetration substances such as glycerol, propylene glycol monoethyl ether, carbonates, bicarbonates, guanidines, ureas and primary, secondary and tertiary phosphates, opacifiers such as latex, styrene / PVP and styrene / acrylamide copolymers pearlescing agents such as ethylene glycol mono- and distearate and PEG-3 distearate, pigments,

Stabilizers for hydrogen peroxide and other oxidizing agents, propellants such as propane-butane mixtures, N ₂ O, dimethyl ether, CO ₂ and air, antioxidants.

With regard to further optional components as well as the amounts of these components used, reference is expressly made to the relevant manuals known to the person skilled in the art, eg. B. Kh. Schrader, bases and formulations of cosmetics, 2nd edition, Hüthig book publisher, Heidelberg, 1989, referenced.

A fourth subject of the present application is a packaging unit (kit) containing

At least one container C1 containing a color-changing agent and

• at least one headgear of the second subject of the invention.

The color-changing agent is preferably present as a two-component product in two containers C1a and C1b in the kit. If it is an oxidative colorant, container C1a contains the so-called coloring cream, which contains the oxidation dye precursors in a cosmetic carrier, and a hydrogen peroxide-containing composition is stored in container 1b.

If it is a dye of the oxo dye, the compounds of component A in container C1a and the compounds of component B in container C1 b can be stored separately.

The containers C1a and C1b may be two separate containers or different chambers within a two- or multi-chamber container, for example a multi-chamber tube, a multi-chamber aerosol can or a multi-chamber bottle. Such containers are known to those skilled in the art. During the removal process from a multi-chamber container, a mixture of the respective contents of the individual chambers can take place before or after the outlet of the contents from said container.

Optionally, the kit of the invention may additionally comprise a container C2 containing a conditioning agent. The kit may additionally contain a use instruction which prescribes the use of the kit according to the method of the third subject of the invention.

In addition, the kit can also optionally contain application aids, mixing bowls or protective gloves.

Claims

Patent claims

A cover sheet having a breadboard distributed over the surface of the film in which the holes are arranged in alternating rows of holes 1 and rows of holes 2, each hole of the pattern of holes of the cover sheet being visible and / or palpable with a hole identifier selected from one of a total of three different hole markings a, b and c, is marked, with the proviso that

Hole row 1 along a preferential direction at least 80% of a repetitive hole marking sequence "hole mark a / hole mark b / hole mark a / hole mark b / hole mark c / hole mark b" and hole row 2 along the same preferential direction at least 80% a repetitive hole marking sequence "hole mark b / Hole identification c / Hole identification b / Hole identification a / Hole identification b / Hole identification a "contains.

2. cover sheet according to claim 1, characterized in that along each row of holes of the hole grid all adjacent holes have an equidistant hole spacing.

3. Covering film according to one of Ansprüchel or 2, characterized in that the hole spacing of adjacent holes along the row of holes is preferably in the range of 5 to 20 mm.

4. Covering film according to one of claims 1 to 3, characterized in that the quantity ratio of the holes with the hole markings a to holes with the hole markings b on the surface of the cover sheet in the range of 1 to 1, 4 to 1 to 1, 7, in particular at 1 to 1, 5, is located.

5. Covering film according to one of claims 1 to 4, characterized in that the quantity ratio of the holes with the hole markings a to holes with the hole markings c on the surface of the cover sheet in the range of 2.2 to 1 to 1, 8 to 1, in particular at 2 to 1, lies.

6. Covering film according to one of claims 1 to 5, characterized in that a hole marking sequence "hole marking a / hole marking b / hole marking a" of the row of holes 1 and a hole marking sequence "Hole marking b / hole marking c / hole marking b" of the immediately following row of holes 2 on opposite sides of a quadrangle with no hole with hole marking in the face, with none of the internal corner angles of the quadrangle being less than 45 °.

7. Head cover for covering human hair in the form of a hood, which contains at least one cover sheet according to one of claims 1 to 7.

8. Head cover according to claim 7, characterized in that the hood contains two side parts (1) and (2) and a central part (3) and optionally a screen part (4).

9. A method for coloring human hair, in which

A in a first step, the head hair with a headgear according to one of

Claims 7 or 8 is covered, B subsequently drawn through marked holes of the head covering hair strands, C applied to the hair strands a color changing agent and after a

Discharge time Z1 is rinsed again, D the headgear is removed, wherein in step B (i) to obtain a low density of strands of hair strands predominantly through

Holes are drawn with the hole marking c, (ii) to obtain a middle strand density the strands of hair predominantly through

Holes are drawn with the hole marking a, (iii) to obtain a high strand density the strands of hair predominantly through

Holes are drawn with the hole marking b.

10. Kit containing

At least one container C1 containing a color-changing agent and

At least one headgear according to one of claims 7 or 8.