DYEING PROCESS USING PEROXYGENATED SALTS AND A SUBSTRATE COMPRISING OXIDATION DYES

Abstract

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising the successive application to said fibres (i) of a composition (A) containing at least one peroxygenated salt and (ii) of a substrate including a surface totally or partially coated with at least one layer containing one or more oxidation dyes; said process does not use any hydrogen peroxide during the application of the substrate to the fibres.

Claims

1. Process for dyeing keratin fibres, in particular human keratin fibres such as the hair, successively applying to said fibres: (i) a composition (A) containing one or more peroxygenated salts, (ii) a substrate including a surface coated with at least one layer containing one or more oxidation dyes, given that the process does not use any hydrogen peroxide during the application of the substrate to the fibres.

2. Process according to claim 1, characterized in that it comprises a rinsing step between (i) the application of composition (A) and (ii) the application of the substrate.

3. Process according to claim 1, characterized in that (ii) the application of the substrate is performed less than 3 hours after the conclusion of the leave-on time of composition (A), preferably less than 1 hour, better still less than 45 minutes after the conclusion of the leave-on time of composition (A).

4. Process according to claim 1, characterized in that the peroxygenated salt(s) are chosen from persulfates, perborates, peracids and/or salts thereof, percarbonates, in particular of alkali metals or alkaline-earth metals, and mixtures thereof, preferably from persulfates.

5. Process according to claim 1, characterized in that the oxidation dyes are chosen from couplers and optionally oxidation bases, preferably couplers.

6. Process according to claim 5, characterized in that the couplers are chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, naphthalene-based couplers and heterocyclic couplers, and also the addition salts thereof and/or the solvates thereof.

7. Process according to claim 5, characterized in that the couplers are chosen from 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 1-hydroxy-3-aminobenzene, 1-methyl-2-hydroxy-4-β-hydroxyethylaminobenzene, 4-amino-2-hydroxytoluene, 5-amino-6-chloro-2-methylphenol, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, 2-amino-4-(β-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene, 1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline, 3-ureido-1-dimethylaminobenzene, sesamol, 1-β-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol, 2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole, 4-hydroxy-N-methylindole, 5-methoxy-6-hydroxyindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 2-amino-4-hydroxyethylaminoanisole, 3-amino-6-methoxy-2-methylaminopyridine, 3,5-diamino-2,6-dimethoxypyridine, 1-N-(β-hydroxyethyl)amino-3,4-methylenedioxybenzene, 2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline, 2,6-dihydroxy-4-methylpyridine, 2-chloro-3,5-diaminopyridine, 2-chloro-3,5-diamino-6-methoxypyridine, 2-chloro-3,5-diamino-6-methylpyridine, 1-H-3-methylpyrazol-5-one, 1-phenyl-3-methylpyrazol-5-one, 4-(3,5-diaminopyridin-2-yl)-1-(2-hydroxyethyl)-1-methylpiperazin-1-ium chloride, 2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole, 2,4,6-trimethoxyaniline hydrochloride, 2,6-dimethyl[3,2-c]-1,2,4-triazole, 6-methylpyrazolo[1,5-a]benzimidazole, 2,6-diaminopyrazine, the addition salts thereof and/or the solvates thereof, and mixtures thereof, preferably from 1,3-dihydroxybenzene, 1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene, 1-hydroxy-3-aminobenzene, 1-methyl-2-hydroxy-4-β-hydroxyethylaminobenzene, 4-amino-2-hydroxytoluene, 5-amino-6-chloro-2-methylphenol, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, α-naphthol, 6-hydroxyindole, 2-amino-3-hydroxypyridine, 6-hydroxybenzomorpholine, 3-amino-6-methoxy-2-methylaminopyridine, 2-amino-4-hydroxyethylaminoanisole, the addition salts thereof and/or the solvates thereof, better still from 3-amino-6-methoxy-2-methylaminopyridine, 6-hydroxybenzomorpholine, 2,4-diamino-1-(β-hydroxyethyloxy)benzene, 2-amino-3-hydroxypyridine, 5-amino-6-chloro-2-methylphenol, 1-methyl-2-hydroxy-4-β-hydroxyethylaminobenzene, 2-amino-4-hydroxyethylaminoanisole, the addition salts thereof and/or the solvates thereof, and mixtures thereof.

8. Process according to claim 1, characterized in that it also comprises a step of heating the keratin fibres.

9. Process according to claim 8, characterized in that the heating step raises the temperature of the keratin fibres to a temperature ranging from 60 to 250° C., preferably to a temperature ranging from 80° C. to 180° C., preferably ranging from 100° C. to 160° C. and better still from 120° C. to 150° C.

10. Process according to claim 1, characterized in that the leave-on time of the substrate on the keratin fibres is less than 20 minutes, preferably last from 1 to 15 minutes, even preferably last from 1 to 10 minutes.

11. Process according to claim 1, characterized in that the substrate is an element in sheet form.

12. Process according to claim 11, characterized in that the element in sheet form is made of plastic material, in particular thermoplastic, paper, metal, notably aluminium, a woven, a nonwoven of non-absorbent fibres, notably of cellulose or a derivative thereof, or polyamide 6,6.

13. Process according to claim 11, characterized in that the element in sheet form includes an adhesive layer on which is deposited the layer containing at least said oxidation dye.

14. Process according to claim 1, characterized in that it also comprises the use of a composition (B) after using the substrate.

15. Process according to claim 14, characterized in that composition (B) comprises one or more organic solvents.

Description

EXAMPLES

[0281] In the examples that follow, all the amounts are indicated as weight percentages of active material relative to the total weight of the composition.

Example 1

[0282] a) Test Compositions

[0283] The following compositions were prepared from the ingredients whose contents are indicated in the tables below:

TABLE-US-00001 TABLE 1 Composition A1 Pigment (ultramarine blue) 0.25 Magnesium carbonate hydroxide 9.4 Sodium silicate 18.3 Disodium EDTA 0.99 L-Proline 0.05 Sodium metasilicate 2.48 Sodium lauryl sulfate 0.99 Threonine 0.05 Potassium persulfate 48.33 Ammonium persulfate 4.9 Mineral oil 2 Sodium stearate 9.87 Guar gum 2.5 Water qs 100

TABLE-US-00002 TABLE 2 Composition A2 Trideceth-2 monoethanolamine carboxamide 0.85 Sodium stannate 0.04 Pentasodium pentetate 0.06 Glycerol 0.5 Stearyl alcohol 2.28 Ceteareth-25 0.57 Phosphoric acid qs Hydrogen peroxide 12 Tetrasodium pyrophosphate 0.02 Water qs 100

TABLE-US-00003 TABLE 3 Composition C Trideceth-2 monoethanolamine carboxamide 0.85 Tetrasodium etidronate 0.06 Sodium salicylate 0.035 Glycerol 0.5 Stearyl alcohol 2.28 Ceteareth-25 0.57 Tetrasodium pyrophosphate 0.02 Water qs 100

TABLE-US-00004 TABLE 4 Dye preparation composition 1 (P1) Propylene glycol 6.2 Hexylene glycol 3 Dipropylene glycol 3 Sodium hydroxide qs Phosphoric acid qs 2,3-Diaminodihydropyrazolopyrazolone 2.5 dimethosulfonate 2,4-Diaminophenoxyethanol hydrochloride 1.74 Ascorbic acid 0.25 Sodium metabisulfite 0.25 Denatured alcohol 8.8 Water qs 100

[0284] b) Procedure

[0285] b1) Preparation of the Substrate

[0286] The dye preparation composition (P1) is applied uniformly to a substrate S1 of paper type using a HandCoater (sold by the company RK Print Coat Instruments Ltd., K-HandCoater range, under the yellow reference). The deposit of the dye preparation composition is 5 mg/cm.sup.2.

[0287] b2) Implementation of the Process

[0288] Compositions (A1) and (A2) are mixed weight for weight to obtain a composition (A) based on persulfates.

[0289] Composition (A) is applied to a lock of TD6 hair at a temperature of 33° C., at a rate of 10 g of composition per 1 g of lock of hair.

[0290] On conclusion of a leave-on time lasting 50 minutes, the lock is rinsed with water.

[0291] Substrate S1 prepared in accordance with step b1) is then applied to the bleached lock. The lock of hair is impregnated using composition (C), at a rate of 3 g of composition per 1 g of lock, so as to allow good contact between the sheet and the lock.

[0292] On conclusion of a leave-on time lasting 5 minutes, the lock is rinsed with water and washed with a standard shampoo.

[0293] The substrate is applied, on the one hand, to a lock of hair which has just been bleached with composition (A) (freshly bleached lock) and, on the other hand, to a lock of hair which was bleached with composition (A) one week previously.

[0294] c) Results

[0295] The difference in colour ΔE of the lock of hair which was treated by means of the process according to the invention, in accordance with step b2), relative to the lock of hair bleached after the application of composition (A), is evaluated.

[0296] The difference in colour ΔE is determined using a Minolta CM 2002 colorimeter in the CIE L* a* b* international system.

[0297] ΔE corresponds to the difference in colour between a lock of bleached hair and a lock of unbleached hair, i.e. of hair not treated with composition (A), and is measured according to the following equation:

ΔE=√{square root over ((L*−L.sub.o*).sup.2+(a*−a.sub.o*).sup.2+(b*−b.sub.o*).sup.2)}  (i)

[0298] In this equation, L*, a* and b* represent, respectively, the values measured on the lock bleached following the implementation of the process according to the invention, and L.sub.0*, a.sub.0* and b.sub.0* represent, respectively, the values measured on the lock bleached with composition (A).

[0299] In this L* a* b* system, L* represents the lightness, a* indicates the green/red colour axis and b* indicates the blue/yellow colour axis. The higher the value of L, the lighter or less intense the colour. Conversely, the lower the value of L, the darker or more intense the colour. The higher the value of a*, the redder the shade, and the higher the value of b*, the yellower the shade.

[0300] The results are collated in the table below:

TABLE-US-00005 TABLE 5 ΔE Freshly bleached lock 52.33 Lock bleached more than one week 12.05 previously

[0301] It is observed that the implementation of the process according to the invention leads to satisfactory colouring with a leave-on time of the substrate lasting 5 minutes.

Example 2

[0302] a) Test Compositions

TABLE-US-00006 TABLE 6 Dye preparation composition 2 (P2) Propylene glycol 6.2 Hexylene glycol 3 Dipropylene glycol 3 Sodium hydroxide qs Phosphoric acid qs 2,4-Diaminophenoxyethanol hydrochloride 2.5 Ascorbic acid 0.25 Sodium metabisulfite 0.25 Denatured alcohol 8.8 Water qs 100

[0303] b) Procedure

[0304] b1) Preparation of the Substrate

[0305] The dye preparation composition (P2) is applied uniformly to a substrate S2 of paper type using a HandCoater (sold by the company RK Print Coat Instruments Ltd., K-HandCoater range, under the yellow reference). The deposit of the dye preparation composition is 5 mg/cm.sup.2.

[0306] b2) Implementation of the Process

[0307] Compositions (A1) and (A2) are mixed weight for weight to obtain a composition (A) based on persulfates.

[0308] Composition (A) is applied to a lock of TD6 hair at a temperature of 33° C., at a rate of 10 g of composition per 1 g of lock of hair.

[0309] On conclusion of a leave-on time lasting 50 minutes, the lock is rinsed with water.

[0310] Substrate S2 prepared in accordance with step bl) is then applied to the bleached lock. The lock of hair is impregnated using composition (C), at a rate of 3 g of composition per 1 g of lock, so as to allow good contact between the sheet and the lock.

[0311] On conclusion of a leave-on time lasting 5 minutes, the lock is rinsed with water and washed with a standard shampoo.

[0312] The substrate is applied, on the one hand, to a lock of hair which has just been bleached with composition (A) (freshly bleached lock) and, on the other hand, to a lock of hair which was bleached with composition (A) one week previously.

[0313] c) Results

[0314] The difference in colour ΔE of the lock of hair which was treated by means of the process according to the invention, in accordance with step b2), relative to the lock of hair bleached after the application of composition (A), is evaluated.

[0315] The difference in colour ΔE is determined using a Minolta CM 2002 colorimeter in the CIE L* a* b* international system.

[0316] ΔE corresponds to the difference in colour between a lock of bleached hair and a lock of unbleached hair, i.e. of hair not treated with composition (A), and is measured according to the following equation:

ΔE=√{square root over ((L*−L.sub.o*).sup.2+(a*−a.sub.o*).sup.2+(b*−b.sub.o*).sup.2)}  (i)

[0317] In this equation, L*, a* and b* represent, respectively, the values measured on the lock bleached following the implementation of the process according to the invention, and L.sub.0*, a.sub.0* and b.sub.0* represent, respectively, the values measured on the lock bleached with composition (A).

[0318] In this L* a* b* system, L* represents the lightness, a* indicates the green/red colour axis and b* indicates the blue/yellow colour axis. The higher the value of L, the lighter or less intense the colour. Conversely, the lower the value of L, the darker or more intense the colour. The higher the value of a*, the redder the shade, and the higher the value of b*, the yellower the shade.

[0319] The results are collated in the table below:

TABLE-US-00007 TABLE 7 ΔE Freshly bleached lock 30.25 Lock bleached more than one week 1.49 previously

Example 5

[0320] a) Test Compositions

[0321] An acidic sodium persulfate solution A3 (10% of sodium persulfate at pH 2.4 with phosphoric acid) is prepared.

[0322] b) Procedure

[0323] Solution (A3) is applied to locks of TD8 hair for a time of 10 minutes at a temperature of 27° C., at a rate of 5 g of composition (A3) per 1 g of lock. The lock is then rinsed.

[0324] The lock of hair is positioned on the substrate S1. After it has been positioned, the lock is impregnated with composition (C) so as to promote good contact between the sheet and the lock, at a rate of 3 g of composition (C) per 1 g of hair. On conclusion of a leave-on time of 10 minutes, the lock is rinsed with water and washed with a standard shampoo.

[0325] This process is compared with a process in which water is applied instead of the solution (A3).

[0326] c) Results

[0327] The difference in colour ΔE of the lock of hair which was treated by means of the process according to the invention relative to the unbleached lock of hair is evaluated.

[0328] The difference in colour ΔE is determined using a Minolta CM 2002 colorimeter in the CIE L* a* b* international system and is measured according to equation (i) described previously in which L*, a* and b* represent, respectively, the values measured on the lock bleached following the implementation of the process according to the invention and L.sub.0*, a.sub.0* and b.sub.0* represent, respectively, the values measured on the unbleached block.

[0329] c1) Test of Not Bleaching the Lock with (A3)

[0330] It is first checked that the application of the solution (A3) to locks of hair does not result in them being bleached.

[0331] To do this, solution (A3) is applied to a lock of TD4 hair for a time of 15 minutes at a temperature of 27° C., at a rate of 5 g of solution (A3) per 1 g of lock.

[0332] The results are collated in the following table:

TABLE-US-00008 TABLE 8 ΔL ΔE TD4 lock treated with solution A3 1.23 1.24

[0333] It is found that the application of solution (A3) to the lock of TD4 hair leads to a difference in colour ΔE of less than 2, which means that the lock of hair is not bleached.

[0334] c2) Results of the Process

TABLE-US-00009 TABLE 9 State of the lock Substrate ΔE Lock treated with solution (A3) S1 8.92 Lock treated with water 1.90

[0335] It is found that the process according to the invention makes it possible to result in higher colour build-ups than a process in which water is used with a substrate S1.