Oxidation dyeing process and oxidation dye composition for keratin fibers which comprises a cationic amphiphilic polymer

A ready-to-use composition for dyeing keratin fibers comprising at least one oxidation dye precursor, at least one oxidizing agent, and at least one cationic amphiphilic polymer,

• wherein said at least one oxidation dye precursor is chosen from:
• ortho-phenylenediamines,
• para-phenylenediamines of formula (I)
• in which
• R1 represents a hydrogen atom or a C1-4 alkyl radical, a C1-4 monohydroxyalkyl radical, a C2-4 polyhydroxyalkyl radical or a 4′-aminophenyl radical,
• R2 represents a hydrogen atom or a C1-4 alkyl radical, a C1-4 monohydroxyalkyl radical or a C2-4 polyhydroxyalkyl radical,
• R3 represents a hydrogen atom, a halogen atom, or a C1-4 alkyl radical, a sulpho radical or a carboxyl radical,
• R4 represents a hydrogen atom or a C1-4 alkyl radical,
• bis(phenyl)alkylenediamines,
• ortho- and para- aminophenols,
• heterocyclic bases and the acid addition salts thereof,
• and said at least one cationic amphiphilic polymer is chosen from quaternized celluloses modified with groups containing at least one fatty chain, selected from alkyl, arylalkyl and alkylaryl groups containing from 8 to 30 carbon atoms, said quaternized celluloses including hydroxyethylcelluloses.

A process for dyeing keratin fibers comprising:

• applying to said fibers an oxidation dye composition (A) containing in a medium which is suitable for dyeing, at least one oxidation dye precursor, and
• developing a color in alkaline, neutral or acidic medium by applying to said fibers an oxidizing composition (B) containing an oxidizing agent, at least one of the compositions (A) and (B) also containing an effective amount of at least one cationic amphiphilic polymer,
• wherein said at least one oxidation dye precursor is chosen from:
• ortho-phenylenediamines,
• para-phenylenediamines of formula (I)
• in which
• R1 represents a hydrogen atom or a C1-4 alkyl radical, a C1-4 monohydroxyalkyl radical, a C2-4 polyhydroxyalkyl radical or a 4′-aminophenyl radical,
• R2 represents a hydrogen atom or a C1-4 alkyl radical, a C1-4 monohydroxyalkyl radical or a C2-4 polyhydroxyalkyl radical,
• R3 represents a hydrogen atom, a halogen atom, or a C1-4 alkyl radical, a sulpho radical or a carboxyl radical,
• R4 represents a hydrogen atom or a C1-4 alkyl radical,
• bis(phenyl)alkylenediamines,
• ortho- and para- aminophenols,
• heterocyclic bases and the acid addition salts thereof,
• and said at least one cationic amphiphilic polymer is chosen from quaternized celluloses modified with groups containing at least one fatty chain, selected from alkyl, arylalkyl and alkylaryl groups containing from 8 to 30 carbon atoms,
• wherein said compositions (A) and (B) are mixed together immediately before being applied to said keratin fibers or wherein said compositions (A) and (B) are applied one after the other to the keratin fibers.

A multi-compartment device or kit for dyeing keratin fibers wherein said device or kit comprises at least two compartments, one of which contains an oxidation dye composition (A) comprising in a medium which is suitable for dyeing, at least one oxidation dye precursor and another compartment contains an oxidizing composition (B) comprising at least one oxidizing agent, wherein at least one of the compositions (A) and (B) also contains an effective amount of at least one cationic amphiphilic polymer,

• wherein said at least one oxidation dye precursor is chosen from:
• ortho-phenylenediamines,
• para-phenylenediamines of formula (I)
• in which
• R1 represents a hydrogen atom or a C1-4 alkyl radical, a C1-4 monohydroxyalkyl radical, a C2-4 polyhydroxyalkyl radical or a 4′-aminophenyl radical,
• R2 represents a hydrogen atom or a C1-4 alkyl radical, a C1-4 monohydroxyalkyl radical or a C2-4 polyhydroxyalkyl radical,
• R3 represents a hydrogen atom, a halogen atom, or a C1-4 alkyl radical, a sulpho radical or a carboxyl radical,
• R4 represents a hydrogen atom or a C1-4 alkyl radical,
• bis(phenyl)alkylenediamines,
• ortho- and para- aminophenols,
• heterocyclic bases and the acid addition salts thereof,
• and said at least one cationic amphiphilic polymer is chosen from quaternized celluloses modified with groups containing at least one fatty chain, selected from alkyl, arylalkyl and alkylaryl groups containing from 8 to 30 carbon atoms, said quaternized celluloses including hydroxyethylcelluloses.