CN1529581A - Hair colouring compositions and uses thereof - Google Patents

Abstract

The present invention provides a hair coloring composition comprising (iv) at least one developer selected from the aminoaromatic series which is capable of being oxidized and thereafter undergoing only a single electrophilic attack reaction, and (v) at least one developer selected from the aminoaromatic series which is capable of being oxidized and thereafter undergoing at least two electrophilic attack reactions and (vi) at least one coupler which delivers improved root-to-tip uniformity and improved hair color.

Description

Hair coloring composition and use thereof

This invention relates to novel hair coloring compositions and to methods of using the compositions in hair coloring processes. In particular, the invention relates to novel combinations of developer components and their use for obtaining special effects.

Hair coloring compositions typically include various aromatic compounds, commonly referred to as developers (also known as precursors or primary intermediates), and various other compounds, commonly referred to as couplers. . These compounds are known as oxidative hair colorants because they require an oxidizing agent to develop the color. Compounds described as developers are those which react with an oxidizing agent to form a reactive oxidized intermediate. This intermediate is then reacted with a coupler or couplers to form a colored molecule. Some chromogens are capable of reacting with other molecules of the same type, ie self-coupling. The coupling agent usually does not react with the oxidizing agent, but reacts with the active oxidized intermediate formed by the reaction of the developer and the oxidizing agent.

In our previously published WO98/52591, WO98/52520, WO98/52521, WO98/52522 and WO98/52523 we describe hair coloring compositions using defined types of oxidative hair coloring agents. In particular, in these publications, the couplers must be selected from the three groups of couplers (A), (B) and (C) which, when coupled with defined color developers, generate cyan, yellow and magenta, respectively. In these publications, the chromogenic reagent must be of a class that can be oxidized and thereafter undergo only a single electrophilic attack. Although it is recognized that other types of oxidative hair coloring agents may optionally be present, the preferred exemplary compositions include only defined developers and couplers.

Other patents disclosing this general type of chromogen (primary electrophilic attack chromogen) include EP-A-079,540 which discloses 2,6-dichloro p-aminophenol, but no other developer, and EP-A-951,900, which includes 2,6-dichloro-p-aminophenol as an essential component and its combination with various couplers and other mono-electrophilic attack Chromogens are exemplified.

It has been found that, while compositions comprising a primary electrophilic attack developer are advantageous for accurate prediction of final color, they exhibit problems of color inhomogeneity. In particular, in hair that has been previously dyed and/or bleached and/or permed, the condition of the roots is often different from the condition of the tips. Thus, the uniformity of color from root to tip was not satisfactory. It is therefore desirable to improve the uniformity of color while maintaining or improving the color applied to the hair.

As described herein, we provide hair coloring compositions comprising:

(i) at least one chromogenic agent selected from the aminoaromatic series capable of being oxidized and thereafter undergoing only a single electrophilic attack reaction, and

(ii) at least one chromogenic agent selected from the aminoaromatic series capable of being oxidized and subsequently undergoing at least two electrophilic attack reactions, and

(iii) at least one coupler.

We have found that chromogenic agents that can be oxidized and then undergo only a single electrophilic attack reaction (mono-electrophilic attack chromogenic agents) are significantly different from chromogenic agents that can be oxidized and then undergo at least two electrophilic attack reactions. Combination of agents (multiple electrophilic attack chromogens) surprisingly improved root-to-tip uniformity compared to compositions containing only one electrophilic attack chromogen, compared to compositions containing multiple electrophilic attack chromogens alone It also improves root-to-tip uniformity compared to the composition of the agent. It also improves color quality.

Therefore, the present invention also provides the use of a composition comprising (i) a single electrophilic attack chromogenic agent and (ii) a multi-electrophilic attack chromogenic agent and (iii) a coupling agent to improve the color applied to hair root-to-tip uniformity. In particular, the present invention provides the use of multiple electrophilic attack developers to improve root-to-tip uniformity provided by hair coloring compositions comprising a single electrophilic attack developer and a coupler .

The compositions of the present invention may be used in a method of coloring hair. The present invention also provides a kit that can be used to provide a hair coloring composition, the kit comprising a separately packaged coloring component and an independently packaged oxidizing component, the coloring component comprising a single electrophilic attack developer and a multi-electrophile attack developer. Colorants and couplers.

In the present invention, at least two types of developers must be used. Developers are those components of the composition that react with the oxidizing agent to form a reactive intermediate that goes on to react with the coupler.

The first chromogen can be oxidized and thereafter undergo only a single electrophilic attack.

Preferably the developer is selected from p- and ortho-disubstituted benzene compounds, wherein one substituent is a primary amine and the other substituent is a different group, preferably selected from nitro, hydroxyl or disubstituted amine groups. Preferably the developer is selected from substituted and unsubstituted p-aminophenols. Para-aminophenol itself can be used as well as dihalogen (chloro or bromo) para-aminophenol. In particular, 2,6-dichloropara-aminophenol gave particularly good results.

The composition also includes a polyelectrophilic attack chromogen. The developer is selected from p- and o-disubstituted benzene compounds, disubstituted pyridine compounds, disubstituted pyrimidines and diamino substituted pyrazoles. Preference is given to phenylenediamines and diaminopyrazoles such as 1-(2-hydroxyethyl)-4,S-diaminopyrazole.

We observed that p-phenylenediamine significantly improved root-to-tip uniformity.

We believe that beneficial effects can be obtained from the use of multiple electrophilic attack chromogens that can undergo self-coupling, for example: active, oxidized intermediates obtained from the oxidation of one chromogen molecule can be combined with the same type The second chromogen molecule reacts.

A suitable amount of total developer is from 0.01 to 5 or 7 wt. % (by weight of the total composition applied to the hair). A preferred amount is from 0.3% to 2% or 4%, preferably from 0.4% to 1.5% or 3%.

Generally, the ratio of mono-electrophilic-attack chromogen to multi-electrophilic-attack chromogen can be, for example, 5:95 to 95:5, especially 20:80 to 80:20, preferably 60:40 to 40:60.

The composition also includes a coupling agent. It reacts with reactive intermediates formed by the oxidation of the developer. Typically, the couplers themselves do not react with the oxidizing agents under the conditions used in the hair coloring process.

Couplers may be of the type discussed in WO98/52522.

For example, a coupler that reacts with a developer to produce a cyan color can be selected from compounds of formula I:

Wherein, Z is H or other active leaving groups. Preferably Z is H.

R ¹ , R ² , R ³ and R ⁴ are independently H, OH, -CH ₂ H, -CO ₂ R, F, Cl, Br, -CN, -NO ₂ -, CF ₃ , cycloalkyl, alkenes radical, cycloalkenyl, aryl, alkaryl, aralkyl, -NH2, -NHR, -NHCOR, -NR ₂ , -NHCOR, -R'NHCOR, -CONHR, -R'CONHR, -R'OH , -SO ₂ R, -SO ₂ NHR, -R'SO ₂ R, -R'SO ₂ R, -R'SO ₂ NHR, -SO ₃ H, -OR, -R'OR or -COR, in the above In any group, R is H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl or aralkyl, R' is alkylene, alkenylene, cycloalkylene , cycloalkenylene, arylene, alkarylene or aralkylene, or any of them with substituents. Additionally, ^R1 and ^R2 together form a substituted or unsubstituted cycloalkyl, cycloalkenyl or aryl. Substituents include OH, -OR, Cl, Br, F, _-CO2H , _-CO2R , _-NH2 and -COR.

Thus, they may be selected from phenol and naphthol compounds having an active leaving group para to the hydroxyl group. The active leaving group Z is any group that can be removed under the conditions of the current hair dyeing process, so that the active oxidized intermediate generated by the oxidation of the chromogenic agent can occur at this position of the coupler reaction. Therefore, the coupling agent and the developer molecule form a chemical bond at the position of the active leaving group. Examples of reactive leaving groups are: H, PhO, Cl, Br, alkoxy (RO) such as phenoxy PhO, and RS-, (where R is alkyl or aryl), however, any Any leaving group that leaves during the process to allow coupling of the reactive intermediate formed from the developer with the coupler is suitable. A preferred compound is 1-acetoxy-2-methylnaphthalene.

Cyan couplers may be used in relatively low amounts, eg 0.001% to 1%, preferably 0.004% or 0.00% to 0.5%, eg not more than 0.05%. All percentages are based on the total weight of the composition applied to the hair.

The coupling agent may additionally be selected from 1,3-diketones of formula II.

Wherein, X and Y are non-leaving substituents, and Z is an active leaving group, so that when the oxidizing agent exists, the or each chromogenic agent and the or each coupler basically only have an active leaving group Respond at the Z position. These couplers are of the same general class as the yellow couplers disclosed in WO98/52522. These couplers react with the chromogen molecules to produce a yellow color.

Each X and Y can be independently H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralkyl, -R'NHCOR, -R'CONHR, -ROH, - _R'CO2R , _-R'CO2NHR , -NHCOR, _-NR2 , -NHR, _-NH2 , -R'OR, and -RO. In these groups, R can be H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralkyl, R' can be alkylene, cycloalkylene, Alkenyl, cycloalkenylene, arylene, alkarylene or aralkylene. Any of the above substituted groups may be used. Suitable substituents include OH, -OR, Cl, Br, S- _CO2H , _-CO2R , _-NH2 and -COR.

In formula II, each of X and Y is preferably methyl or ethyl, and preferred coupling agents of formula II are dimethylacetoacetamide and diethylacetoacetamide.

In formula II, the reactive leaving group Z can be any of the reactive leaving groups discussed above for the cyan couplers of formula I.

Yellow couplers can also be selected from compounds of formula III:

Wherein, R ¹ , R ² and R ³ are independently cycloalkyl, alkenyl, cycloalkenyl, aryl, alkaryl, aralkyl, -R'NHCOR, -CONHR, -R'CONHR, -R 'OH, -R'CO ₂ R, -R'SO ₂ NHR, -R'OR or -COR, in any group, R is H, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aromatic radical, alkaryl or aralkyl, and ^R is alkylene, alkenylene, cycloalkylene, cycloalkenylene, arylene, alkarylene, aralkylene or any of the above substituted base group.

A preferred yellow coupler is Formula II.

The amount of yellow coupler is typically 0.05 to 4 wt.%, eg 0.05 to 3 wt.%, but in some cases up to 5 or 6%, by weight of the composition applied to the hair. For example, 0.2 to 3 wt.%, such as 0.2 to 2 wt.%.

Couplers may also be selected from compounds of formula IV:

Wherein, X is a non-leaving substituent, Z is an active leaving group, and Y is an active leaving group or a non-leaving substituent, so that when an oxidizing agent exists, the or each chromogen and the or each A coupler basically only reacts at the position with active leaving group Z, and if Y is an active leaving group, the position of Y is also included. Typically, Y is a non-leaving substituent. The reactive leaving group can be the same as discussed in Formula I above.

X can be H, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, alkaryl, aralkyl, -R'NHCOR, -R'CONHR, -R'OH, _-R'SO2 R, -R'SO ₂ NHR or -R'OR. Y can be H, -OH, CO ₂ H, -CO ₂ R, F, Cl, Br, -CN, -NO ₂ , CF ₃ , alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, Alkaryl, Aralkyl, _-NH2 , -NHR, NR2, -NHCOR, -R'NHCOR, -CONHR, -R'CONHR, NHCONHR, -R'OH, _-SO2R , _-SO2NHR , _-R'SO2R , _-R'SO2NHR , _-SO3H , -OR, -R'OR, or -COR. In all the above groups, R can be H, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, alkaryl, aralkyl, R' can be alkylene, cycloalkylene, alkylene Alkenyl, cycloalkenylene, arylene, alkarylene, aralkylene (or any of the above groups with substituents). Suitable substituents include -OH, -OR, Cl, Br, F, _-CO2H , _-CO2R , _-NH2 and -COR.

These couplers are of the same general class as those disclosed in WO 98/52522 and react with reactive oxidized intermediates formed by the reaction of the developer molecule and the oxidizing agent to produce magenta.

Preferably, Y is selected from phenyl and -NHCOR, where R is alkyl. More preferably, Y is selected from phenyl and N-acetyl.

In preferred coupler compounds, X is methyl, Y is phenyl; X is phenyl, X is NHCOR, preferably N-acetyl; X is methyl, Y is NHCOR, preferably N-acetyl; X is Methyl or phenyl, X is NHCOPhNH ₂ ; X is phenyl, Y is phenyl.

Amounts of couplers of this type are, for example, 0.01% to 4%, preferably 0.01% to 2%, more preferably 0.03% to 3%, such as 0.03% to 2%, and in some compositions not more than 1% or 0.5% %.

The coupling agent may be selected from traditional coupling agent compounds, especially disubstituted benzene compounds, especially m-disubstituted benzene compounds.

Generally, the total content of developer and coupler can be varied according to the desired shade. For flaxen shades, the preferred amount is from 0.001 to 4 wt.%. For red shades, the preferred amount is from 0.001 to 4 wt.%. For brown shades, the preferred amount is from 0.01 to 4%. For black shades, the preferred amount is 0.1 to 4 wt.%.

The composition can be used in a method of coloring hair. In these methods, the composition typically must include an oxidizing agent prior to application to the hair. Typically, the compositions of the invention are provided in at least two separate packages (eg bottles), the oxidizing agent being contained in one package and the developer being contained in the other package.

A preferred oxidizing agent is hydrogen peroxide. Typically used in amounts of up to about 10 wt. % by weight of the composition applied to the hair. Other oxidizing agents that can be used include other inorganic peroxide oxidizing agents, preformed organic peroxyacid oxidizing agents and other organic peroxides such as carbamide peroxide, melamine peroxide, and any mixtures thereof.

Suitable oxidizing agents are preferably water-soluble, ie they have a solubility of at least about 5 g in 1000 ml of deionized water at 25°C ('Chemistry' C.E. Mortimer, Fifth Edition, p. 277).

Typically, the pH of the hair coloring compositions of the invention is higher than 7, especially higher than 8 or 9. Typically, a pH of 9 to 12 is suitable. The systems of the present invention may also be incorporated into low pH (eg pH 1 to 6) hair coloring systems.

In practice, the composition of the first aspect of the invention may be provided to the consumer in a single package comprising the developer and the coupler in a single unit, such as a bottle.

It is possible to provide a composition in which the developer is individually packaged and the coupler is also individually packaged. Couplers can optionally be supplied in pre-made mixes to give different colours. Alternatively, they can also be provided independently to consumers who mix them to create different hair colors.

In all cases, the base components are mixed to form the compositions of the present invention prior to application to the hair.

Typically, the oxidizing agent is packaged separately from the other coloring components. Typically, the oxidizing agent forms a component of the hair coloring composition by mixing with the base components prior to application to the hair. Alternatively, the oxidizing agent may also be applied to the hair alone, either before or after the hair coloring composition.

In the present invention, the developer, coupler and oxidizing agent and other substances applied to the hair as components of the composition of the present invention may be provided in any suitable physical form. The preferred physical form is liquid. The liquid may be low viscosity, eg thin as water, or high viscosity. These substances can be suspended in a gel network, which can be solid or low viscosity.

Hair coloring substances are generally formulated so that when they are mixed to form the compositions of the present invention for use on hair, they form a cream-like product for ease of application to the hair. The final composition applied to the hair is often in the form of an emulsion.

Each individual substance may be provided in a form such that the pH of the composition comprising it is above or below 7. For example the pH of the material may be from 1 to 11. In order to promote the dissolution of various components in the water-based carrier, especially the developer and coupling agent, the pH of the carrier can be greater than 6.1 or 6.5 or even higher than 7, for example, the pH is 8 or 9 to 10 or 11. Providing a pH of 1 to 6 helps improve the stability of the components.

Even if the pH of one of the components used to form the composition is higher than 7, it is still possible to provide a material which will give the final composition a pH below 7 when applied to the hair after mixing. Alcohols such as ethanol may be included in amounts such as 5% to 10% or 25% to facilitate dissolution of the developer and coupler, especially coupler in a water-based carrier.

The composition may contain other optional components. Said components include other oxidative and non-oxidative coloring agents, buffers, leavening agents, catalysts for oxidizing agents, thickeners, diluents, enzymes, surfactants (especially anionic, amphoteric, nonionic or zwitterionic surfactants), proteins and peptides and _their derivatives; water-soluble or solubilizing preservatives; dye removers; _H2O2 stabilizers; humectants; solvents; antibacterial agents; low-temperature phase modifiers; viscosity control hair conditioners; enzyme stabilizers; _TiO2 and _TiO2 -coated mica; fragrances and fragrance solubilizers; chelating agents. Other optional materials include anti-dandruff actives such as ZPT. See WO98/52522 for details of suitable optional components.

Example

In the following examples, various standard tests were used as follows.

I Evaluation of initial color and color change (measurement of ΔE)

The instrument used to measure the initial color and color change of the substrate (hair/skin) dyed with the dyeing composition of the invention is a Hunter Colourquest spectrophotometer. The value used to characterize the degree of color change on any particular substrate is ΔE, ΔE as defined in the present invention, expressed as the actual sum of the L, a and b values:

ΔE＝(ΔL ² +Δa ² +Δb ² ) ^

L is a measure of lightness and darkness (color intensity), where L=100 corresponds to white and L=0 corresponds to black. Also, a is a measure of the coefficient (color hue) of red and green, eg a positive coefficient equals red and a negative coefficient equals green. b is a measure of the yellow and blue coefficients (color hues), eg a positive coefficient equals yellow and a negative coefficient equals blue.

Hunter Colourquest spectrophotometer measurements can be performed on a Hunter Labscan colorimeter, a full-scan spectrocolorimeter with wavelengths from 400 to 700 nanometers that records the L, a and the value of b. The machine was set up as follows: Mode - 0/45; Port Size - 1 inch (2.5 cm); Field of View Size - 1 inch (2.5 cm); Light - D65; Field of View - 10; UV Lamp/Filter - None . The hair is placed in a sample holder designed to hold the hair so that the hair remains in the same direction during the measurement. An equivalent colorimeter can be used, but it must be ensured that the hair does not move during the measurement. The hair must be spread out to cover the 1 inch (2.5 cm) port during the colorimetric measurement. Place points on the hair switch holder to guide the position of the holder at the port. Line up the points on the port with a marker and take a reading at each point.

Eight measurements per switch, four measurements per side, for three switches per measurement.

II hair switch dyeing method

For coloring, hang 4 gram hair switches approximately 8 inches (20 cm) long (or 2 gram hair switches 4 inches (10 cm) long) from a suitable container. The test coloring product is then prepared (eg, here, the components of the separate bottles are mixed together) and the product is applied directly to the test switch at about 2 grams per gram of hair. Massage the color into the entire switch for about 1 minute, then leave on the switch for up to about 30 minutes. After rinsing with running water for about 1 or 2 minutes, the colored hair switches were cleaned (according to Shampoo Protocol IV below) and dried. Can be dried naturally or with a dryer. The color change (initial color) of the dyed, clean, dry test switches was measured using a Hunter Colourquest spectrophotometer.

III Method of cleaning hair switches

In a suitable container, clamp a color-treated 4 gram, 8-inch (20 cm) test switch (or 2 gram, 4-inch (10 cm) test switch), rinse with warm water (approx. F (38°C) at a pressure of about 1.5 gal/min (6.8 L/min)) rinse thoroughly for about 10 seconds. Shampoo (approximately 0.1 milliliters of non-conditioning shampoo per gram of hair) is then applied directly to the wet test switches using a syringe. After lathering the hair for about 30 seconds, rinse the hair with running water for about 30 seconds. Then, repeat the process of shampooing and lathering the hair, and finally rinsing for 60 seconds. Excess water was removed (squeezed) from the test switches with fingers. Then, the test switches were either dried naturally or in a preheated drying box at about 140°F (60°C) (about 30 minutes).

IV Bleaching Protocol

Virgin buffalo hair switches were bleached using a commercially available bleach, Clairol 'Born Blond (with chamomile)'. Mix bleach according to directions, apply 10 grams per switch and coat thoroughly. Wrap each switch loosely in cling film and let sit for 30 minutes. The seeds were then rinsed with tap water for two minutes at 37°C. Then wash with shampoo again.

V uniformity test

In each experiment, three pristine bovine hair switches were dyed according to the protocol above. Control switches were bleached three times and then colored according to the bleaching protocol above. The ΔE value of each group of hair switches was measured, and the difference between the average ΔE value of the original hair strands and the ΔE value of the hair switches after three bleachings was recorded as the uniformity value.

Formulation of VI emulsion base

The formulation of the emulsion base is as follows: components Use weight percentage (%) Water Cetearyl Ether 25 Sodium Cetyl Stearyl Benzoate Phenoxyethanol Benzyl Alcohol Stearyl Ether 2 Ethylenediaminetetraacetic Acid (EDTA) Tetrasodium Di-PEG-2 Soyamine IPDI Dihydroxyethyl soyamine dioleate (Lowenol S216 from Lowenstein) DC Q2-8220 from Dow Corning to 100% 0.54000.81001.63000.05570.06680.06680.27000.02230.21152.11501.5000

An example of the method for producing the emulsion base is given below.

1. Add water into the container and heat it under stirring until the temperature exceeds the melting point of fatty alcohol.

2. Add fatty alcohol and ethoxylated fatty alcohol, ie, Ceteareth-25, Cetyl Alcohol, Stearyl Alcohol, Steareth-2, and allow to melt. Increase stirring.

3. Add other surfactants, namely, Dihydroxyethyl Soyamine Dioleate (Lowenol S216) and Di-PEG-2 Soyamine IPDI.

4. Continue shear mixing.

5. Start shear cooling and add preservatives (sodium benzoate, phenoxyethanol, benzyl alcohol) at a suitable temperature.

6. During cooling, mix and add silicone containing conditioner (DC Q2-8220). Mix until homogeneous.

7. Cool to room temperature.

Example 1

The composition of this example comprises (the amount is the percentage of the composition finally applied to the hair switch): 0.4% of 2,6-dichloro-p-aminophenol (DCP) as a single electrophilic attack chromogenic agent, 0.4% of terephthalic acid Amine (PPD) was used as a multi-electrophilic attack chromogen, and 1.2% 3-acetaminophenol (3AP) was used as a cyan coupler. An emulsion base having the composition given above is mixed with a dyeing composition which has been prepared by adding 0.1% ethylenediaminetetraacetic acid (chelating agent), 0.1% ascorbic acid and 0.1% sodium sulfite (antioxidant), 1.23 % Ammonium Acetate (buffer) is pre-dissolved in water (heated if necessary to facilitate dissolution) to form a coloring premix, the above amounts are based on the weight of the final composition applied to the hair. The amount of emulsion base in the composition applied to the hair was 49%. Ammonium hydroxide was added to give a final pH of 10 (1.8% by weight of the final composition applied to the hair). This mixture was then mixed with 36% hydrogen peroxide so that the final composition applied to the hair contained 3% hydrogen peroxide before application to the hair switches.

The uniformity results are as follows:

Composition 1 (DCP+3AP) 6.70

Composition 2 (PPD+3AP) 5.00

Composition 3 (DCP+PPD+3AP) 2.65

Thus, using the same coupler, using a combination of the two developers resulted in better root-to-tip uniformity than using either developer alone.

Also, the color produced by composition 3 is beneficial. Composition 1 produces a color with a hint of green on the hair. Composition 2 produces a very deep blue/black, and the blue tint tends to be masked. Composition 3 gave a satisfactory color which was a bright blue/black.

Example 2

In this example, the same single electrophilic attack chromogenic agent and multiple electrophilic attack chromogenic agent as in Example 1 were used. The coupler was the magenta coupler, 3-(N-acetyl)amino-1-phenol-2-pyrazolin-5-one (NAPP). This composition had the same components in the same amounts as the composition in Example 1, except that the cyan coupler for hair in Example 1 was replaced with a magenta coupler. Root-to-tip uniformity values are as follows:

Composition 4: (DCP+NAPP) 13.47

Composition 5: (PPD+NAPP) 2.44

Composition 6: (DCP+PPD+NAPP) 5.36

Thus, it can be seen that composition 6 according to the invention gives significantly improved homogeneity compared to composition 4.

In addition, the resulting color is advantageous. Composition 4 produced a very dark pink/magenta color which was not preferred by consumers. Composition 5 shows up as a very deep purple, with the magenta hue being masked again. Composition 6 produced a satisfactorily vibrant purple/magenta color.

Claims (13)

1. hair colouring compositions, described compositions comprises

(i) at least a developer, described developer is selected from amino aromatic series, its can be oxidized and only experience thereafter the single electric aggressive reaction of parent and

(ii) at least a developer, described developer is selected from amino aromatic series, its can be oxidized and experience at least twice close electric aggressive reaction thereafter and

(iii) at least a coupling agent.

2. compositions as claimed in claim 1, wherein said developer (i) can be oxidized and be only experienced the electric aggressive reaction of single parent, described developer comprises at least a be selected from replacement and chemical compound unsubstituted p-aminophenol, preferred dihalo p-aminophenol, more preferably comprise 2,6-dichloro p-aminophenol.

3. the described compositions of each claim as described above, wherein said developer (ii) comprises at least a following developer that is selected from: right-and neighbour-dibasic benzene compound, the Disubstituted pyridine chemical compound, the pyrazoles that dibasic pyrimidine and diaminourea replace, preferred p-phenylenediamine (PPD).

4. compositions as claimed in claim 1, wherein said developer (ii) comprises at least a developer, described developer can be oxidized and be being experienced from coupling thereafter.

5. the described compositions of each claim as described above, wherein said coupling agent (iii) comprises at least a chemical compound, between described chemical compound is selected from-dibasic benzene compound.

6. the described compositions of each claim as described above, wherein said coupling agent comprises at least a coupling agent that is selected from phenol and naphthols, its para-position at described hydroxyl has activity leaving group.

7. the described compositions of each claim as described above, wherein said coupling agent (iii) comprises:

At least a 1 of the formula II that is selected from, the chemical compound of 3-diketone:

Wherein X and Y are the non-substituent groups of leaving away, and Z is an activity leaving group, and like this when oxidant exists, described or each developer and described or each coupling agent substantially only react on the position with activity leaving group Z, and/or

The chemical compound of at least a formula III

R wherein ¹, R ²And R ³Be independently cycloalkyl, thiazolinyl, cycloalkenyl group, aryl, alkaryl, aralkyl ,-R ' NHCOR ,-CONHR ,-R ' CONHR ,-R ' OH ,-R ' SO ₂R ,-R ' SO ₂NHR ,-R ' OR or-COR, above-mentioned arbitrary in R be H, alkyl, cycloalkyl, thiazolinyl, cycloalkenyl group, aryl, alkaryl or aralkyl, and R ' is alkylidene, alkenylene, ring alkylidene, ring alkenylene, arlydene, alkarylene or inferior aralkyl, or above arbitrary substituent group of being with.

8. the described compositions of each claim as described above, wherein said coupling agent comprises at least a coupling agent that is selected from the chemical compound of formula IV:

Wherein X is the non-substituent group of leaving away, Z is an activity leaving group, Y is activity leaving group or the non-substituent group of leaving away, like this when oxidant exists, described or each developer and described or each coupling agent substantially only react on the position with activity leaving group Z, if when Y is activity leaving group, is also included within on the position with Y and reacts.

9. the described compositions of each right is applied to the purposes of root to the uniformity of the tip of the color of hair in raising as described above, and described hair is preferably the hair that has before dyeed and/or bleached and/or scalded.

10. the purposes of developer, described developer is selected from amino aromatic series, its can be oxidized and in experience at least twice close electric aggressive reaction thereafter improving described uniformity to the tip, described uniformity be by comprise at least a energy oxidized and thereafter only experience once the developer of close electric aggressive reaction and the hair colouring compositions of at least a coupling agent obtain.

11. method for coloring hairs, described method comprises following material is applied to hair: (i) one or more developers, described developer is selected from amino aromatic series, it can be oxidized and only experiences the electric aggressive reaction of single parent thereafter, (ii) one or more developers, it can be oxidized and in experience at least twice close electric aggressive reaction and (iii) one or more coupling agents thereafter.

12. method as claimed in claim 11, described method also comprise oxidant is applied to described hair.

13. the coloring hairs external member, described external member comprises

(a) the dyeing component of packing separately, described dyeing component comprises (i) one or more developers, described developer is selected from amino aromatic series, it can be oxidized and only experiencing the single electric aggressive reaction of parent and (ii) one or more developers thereafter, described developer is selected from amino aromatic series, its can be oxidized and experience at least twice close electric aggressive reaction thereafter and (iii) one or more coupling agents and

(b) oxidation component of packing separately.