Device for self-foaming oxidation dyeing, ready-for-use self-foaming composition and method for dyeing keratinous fibres

1. Multi-compartment device comprising:

i) a first compartment including a dyeing composition (A) comprising one or more oxidation dyes and one or more alkaline agents,

ii) a second compartment including a composition (B) comprising one or more oxidizing agents, characterized in that the one or more oxidizing agents are chosen from hydrogen peroxide, urea hydrogen peroxide, alkali metal bromates, alkali metal ferricyanides, peroxygenated salts, peracids and their precursors, and

iii) one or more self-foaming agents having a boiling point of at least 1° C. present in at least one of the compositions (A) and/or (B).

2. Device according to claim 1 , characterized in that the oxidation dye or dyes are chosen from oxidation bases, optionally in combination with one or more couplers.

3. Device according to claim 2 , characterized in that the oxidation bases are chosen from ortho- or para-phenylenediamines, double bases, ortho- or para-aminophenols, heterocyclic bases, and the addition salts of these compounds with an acid.

4. Device according to claim 2 , characterized in that the coupler or couplers are chosen from meta-phenylenediamines, meta-aminophenols, meta-diphenols, heterocyclic couplers and the addition salts of these compounds with an acid.

5. Device according to claim 1 , characterized in that the alkaline agents are chosen from:

aqueous ammonia,

alkanolamines,

oxyethylenated and/or oxypropylenated ethylenediamines,

inorganic or organic hydroxides,

alkali metal silicates,

amino acids, and

the compounds of following formula (I):

in which:

W is a divalent (C 1 -C 8 )alkylene group, which is optionally substituted, in particular by a hydroxyl group or a C 1 -C 4 alkyl radical, and

R a , R b , R c and R d , which are identical or different, represent a hydrogen atom, a C 1 -C 4 alkyl or hydroxy(C 1 -C 4 )alkyl radical.

6. Device according to claim 1 , characterized in that the self-foaming agent is chosen from volatile aliphatic C 4 -C 6 hydrocarbons having a boiling point which can range from 1° C. to 28° C. at atmospheric pressure (760 mm of mercury).

7. Device according to claim 1 , characterized in that the self-foaming agent or agents are chosen from isopentane, neopentane, and their mixtures.

8. Device according to claim 1 , characterized in that the self-foaming agent or agents are chosen from halogenated or non-halogenated hydrocarbons having a boiling point varying from 30 to 70° C. at atmospheric pressure (760 mm of mercury).

9. Device according to claim 1 , characterized in that the self-foaming agent is chosen from halogenated hydrocarbons and non-halogenated hydrocarbons.

10. Device according to claim 1 , characterized in that the self-foaming agents correspond to two compounds a) and b), employed in one or more of the compositions (A) and (B), capable of reacting with one another to form a gas.

11. Device according to claim 10 , characterized in that the compound a), conversely the compound b), can be chosen from carbonates, ammonium carbonate, and the compound b), conversely the compound a), can be chosen from acids.

12. Device according to claim 10 , characterized in that the compound a), conversely the compound b), is aqueous hydrogen peroxide solution and the compound b), conversely the compound a), is a compound which is both an oxidizing agent and a reducing agent.

13. Self-foaming dyeing composition for keratinous fibres comprising one or more oxidation dyes, one or more alkaline agents and one or more self-foaming agents as defined according to claim 1 and hydrogen peroxide.

14. Composition according to claim 13 , characterized in that the hydrogen peroxide content is greater than or equal to 0.3% by weight with respect to the total weight of the composition.

15. Method for dyeing keratinous fibres, comprising the application, to the said fibres, of a ready-for-use self-foaming dyeing composition as defined according to claim 13 for a leave-in time sufficient to obtain the expansion of the said composition and to develop the desired coloration.

16. Device according to claim 9 , wherein the halogenated hydrocarbons are selected from the group consisting of perfluorobutyl methyl ester and methyl perfluorobutyl ether.

17. Device according to claim 9 , wherein the non-halogenated hydrocarbons are selected from pentane, neohexane, and hexane.