Device for the oxidation dyeing of keratin fibres
The present invention relates to a device ( 1 ) for dyeing keratin fibres, comprising at least two compartments ( 2 ) and ( 3 ), the first compartment ( 2 ) comprising a first composition (A) comprising oxidation dyes and the second compartment ( 3 ) comprising a second composition (B) comprising chemical oxidizing agents. Said device allows easy mixing of the compositions contained in said compartments at the time of use.
1 . A device comprising at least two compartments:
i) a first compartment comprising a first composition comprising:
one or more oxidation dyes, and
one or more acrylic anionic associative polymers;
ii) a second compartment comprising a second composition comprising:
one or more chemical oxidizing agents,
one or more fatty alcohols and/or one or more nonionic surfactants, and
optionally one or more polyols,
said device being configured to allow said first and second compartments to be placed in communication so as to enable the mixing of said compositions in one of said first and second compartments.
2 . The device according to claim 1 , characterized in that the oxidation dye(s) are chosen from oxidation bases and oxidation couplers.
3 . The device according to claim 1 , characterized in that the oxidation dye(s) are present in a total content ranging from 0.0001% to 10% by weight, relative to the total weight of the composition comprising them.
4 . The device according to claim 1 , characterized in that the acrylic anionic associative polymer(s) are chosen from copolymers including, among their monomers, an α,β-monoethyleniclly unsaturated carboxylic acid and an ester of an α,β-monoethylenically unsaturated carboxylic acid and of an oxyalkylenated fatty alcohol.
5 . The device according to claim 1 , characterized in that the acrylic anionic associative polymer(s) are present in a total content ranging from 0.01% to 5% by weight, relative to the total weight of the composition comprising them.
6 . The device according to claim 1 , characterized in that the chemical oxidizing agent(s) are chosen from hydrogen peroxide, urea peroxide, alkali metal bromates, persalts, potassium persulfate and ammonium persulfate, peracids and oxidase enzymes (with the optional cofactors thereof), and mixtures thereof.
7 . The device according to claim 1 , characterized in that the chemical oxidizing agent(s) are present in a content ranging from 0.001% to 50% by weight, relative to the total weight of the composition comprising them.
8 . The device according to claim 1 , characterized in that the fatty alcohol(s) are chosen from solid fatty alcohols.
9 . The device according to claim 1 , characterized in that the fatty alcohol(s) are present in a total content ranging from 0.25% to 5% by weight, relative to the total weight of the composition comprising them.
10 . The device according to claim 1 , characterized in that the nonionic surfactant(s) are chosen from saturated or unsaturated, linear or branched, oxyalkylenated or glycerolated C8-C40 alcohols, saturated or unsaturated, linear or branched, oxyalkylenated C8 to C30 fatty acid amides, and also mixtures thereof.
11 . The device according to claim 1 , characterized in that the nonionic surfactant(s) are present in a total content ranging from 0.1% to 10% by weight, relative to the total weight of the composition comprising them.
12 . The device according to claim 1 , characterized in that the polyol(s) are chosen from diglycerol, glycerol, propylene glycol, propane-1,3-diol, 1,3-butylene glycol, pentane-1,2-diol, octane-1,2-diol, dipropylene glycol, hexylene glycol, ethylene glycol, polyethylene glycols, sorbitol, sugars, and mixtures thereof.
13 . The device according to claim 1 , characterized in that the polyol(s) are present in a content ranging from 0.1% to 2% by weight relative to the total weight of the composition comprising them.
14 . The device according to claim 1 , characterized in that the at least two compartments can move relative to each other on a vertical axis so as to release a passage between said compartments allowing said compartments to be placed in communication, and the mixing of the first and second compositions.
15 . The device according to claim 1 , characterized in that the at least two compartments are separated by at least one temporary shut-off member.
16 . The device according to claim 1 , characterized in that the device comprises an applicator.
17 . A process for treating keratin fibres using the device as described according to claim 1 .
18 . The device according to claim 15 , characterized in that the temporary shut-off member comprises a cylindrical skirt surrounding said open end and a stopper connected to said cylindrical skirt.
19 . The device according to claim 1 , characterized in that it comprises at least one dispensing orifice for dispensing the ready-to-use composition obtained after mixing the first composition and the second composition.