Dye composition using a long-chain ether of an alkoxylated fatty alcohol and a cationic polymer, processes and devices using the same

A composition for dyeing keratin fibers, comprising:

• at least one oxidation dye;
• at least one nonionic ether of a polyoxyalkylenated fatty alcohol of formula (i):
• R—(O-Alk)n-OR′ (i);
• in which in formula (i):
• R denotes a linear or branched, saturated or unsaturated C10-C30 hydrocarbon-based radical,
• R′ denotes a linear or branched, saturated or unsaturated C10-C30 hydrocarbon-based radical, optionally substituted with a hydroxyl radical,
• n is an integer ranging from 1 to 100 inclusive, and
• Alk represents a linear or branched (C1-C6)alkylene group, ethylene, or propylene;
• at least one cationic polymer;
• at least one fatty substance at a concentration of at least about 25% by weight relative to the total weight of the composition;
• and
• at least one chemical oxidizing agent.

A method for dyeing keratin fibers, the method comprising:

• applying to said fibers a composition comprising:
• at least one oxidation dye;
• at least one nonionic ether of a polyoxyalkylenated fatty alcohol of formula (i)
• R—(O-Alk)n-OR′ (i);
• in which formula (i):
• R denotes a linear or branched, saturated or unsaturated C10-C30 hydrocarbon-based radical,
• R′ denotes a linear or branched, saturated or unsaturated C10-C30 hydrocarbon-based radical, optionally substituted with a hydroxyl radical,
• n is an integer ranging from 1 to 100 inclusive, and
• Alk represents a linear or branched (C1-C6)alkylene group such as ethylene or propylene;
• at least one cationic polymer;
• at least one fatty substance at a concentration of at least about 25% by weight relative to the total weight of the composition;
• and
• at least one chemical oxidizing agent.

A multi-compartment device for implementing a method for dyeing keratin fibers, the method comprising:

• applying to said fibers a composition comprising:
• at least one oxidation dye;
• at least one nonionic ether of a polyoxyalkylenated fatty alcohol of formula (i)
• R—(O-Alk)n-OR′ (i);
• in which formula (i):
• R denotes a linear or branched, saturated or unsaturated C10-C30 hydrocarbon-based radical,
• R′ denotes a linear or branched, saturated or unsaturated C10-C30 hydrocarbon-based radical, optionally substituted with a hydroxyl radical,
• n is an integer ranging from 1 to 100 inclusive, and
• Alk represents a linear or branched (C1-C6)alkylene group such as ethylene or propylene;
• at least one cationic polymer;
• at least one fatty substance at a concentration of at least about 25% by weight relative to the total weight of the composition;
• and
• at least one chemical oxidizing agent, and
• preparing the composition extemporaneously before the application by mixing at least formulation (A) and formulation (B),
• wherein formulation (A) is free of chemical oxidizing agent and comprises at least one oxidation dye, at least about 50% by weight of the at least one fatty substance, and at least one nonionic compound of formula (i);
• wherein formulation (B) comprises at least one chemical oxidizing agent;
• wherein at least one of formulation (A) and formulation (B) comprises at least one cationic polymer chosen from diquaternary ammonium cationic polymers containing repeating units corresponding to formula (ii):
• wherein:
• R1, R2, R3 and R4, which may be identical or different, represent linear, branched or cyclic, saturated, unsaturated or aromatic C1-C20 hydrocarbon-based radicals, linear or branched hydroxyalkyl radicals in which the alkyl part is C1-C4, linear or branched C1-C6 alkyl radicals substituted with a nitrile, ester, acyl or amide group or a group —CO—O—R5-D or —CO—NH—R5-D where R5 is an alkyl radical and D is a quaternary ammonium group, or form, together or separately, with the nitrogen atoms to which they are attached, heterocycles optionally containing a second heteroatom other than nitrogen;
• A1 and B1 represent linear or branched, saturated or unsaturated C2-C20 radicals that are optionally substituted or interrupted with one or more aromatic rings, oxygen or sulfur atoms or groups bearing at least one of these atoms;
• X− denotes an organic or mineral anion;
• and
• A1, R10 and R12 may form, with the two nitrogen atoms to which they are attached, a piperazine ring;
• in addition, if A1 denotes a linear or branched, saturated or unsaturated alkylene or hydroxyalkylene radical, B1 may also denote a group —(CH2)n—CO-D-OC—(CH2)n— in which n ranges from 1 to 100 and D denotes a glycol, bis-secondary diamine, bis-primary diamine or ureylene residue;
• and
• wherein the fatty substance concentration of the composition resulting from the mixing of formulation (A) and formulation (B) is at least about 25% by weight relative to the total weight of the composition,
• the multi-compartment device comprising:
• a first compartment for containing formulation (A), and
• a second compartment for containing formulation (B).