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US 11,896,700 B2Granted
Process for treating keratin fibers using an anhydrous composition comprising a compound of azomethine type comprising two pyrazolopyridine units and an aqueous composition
AssigneeL'oreal
InventorsArnaud Bonnamy, Karen Teboul
Life of this patent
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Abstract
The subject of the present invention is a process for treating keratin fibers using an anhydrous dye composition comprising at least one compound of azomethine type comprising two pyrazolopyridine units of formula (I) or (II) and an aqueous composition. The invention also relates to a kit comprising an anhydrous dyeing composition and an aqueous composition.
Claims20
A process for dyeing keratin fibers which comprises mixing together at least compositions (1) and (2) and applying the mixture to the keratin fibers, wherein:
- composition (1) is anhydrous and comprises one or more dyes chosen from compounds of formulae (I) and/or (II) below:
- wherein in formulae (I) and (II):
- Z1 represents an oxygen atom or a group —N(R6)—;
- Z′1 represents an oxygen atom or a group —N(R′6)—;
- with the proviso that when Z1 represents —N(R6)— and/or Z′1 represents —N(R′6)—, then R1 and R6 and/or R′1 and R′6, respectively, may form, together with the nitrogen atom to which they are attached, an optionally substituted, 5- to 8-membered, optionally cationic, saturated, unsaturated, or aromatic heterocycle;
- R1, R′1, R6, and R′6 each independently represent:
- a hydrogen atom,
- a C1-C10 alkyl radical optionally interrupted with one or more non-adjacent heteroatoms, and/or optionally substituted;
- R2, R3, R4, R5, R′2, R′3, R′4, and R′5 each independently represent:
- a hydrogen atom,
- an optionally substituted C1-C4 alkyl radical, or
- a group chosen from —NH2, —N(H)R10, —N(R11)R12, OH, or —OR9, with R9 and R10 representing an optionally substituted, linear or branched C1-C6 alkyl, R11 and R12, which may be identical or different, representing an optionally substituted, linear or branched C1-C6 alkyl, wherein R11 and R12 optionally form, together with the nitrogen atom to which they are attached, a saturated, unsaturated or aromatic 5- to 8-membered heterocycle optionally containing one or more other heteroatoms or groups chosen from N, O, S, S(O)2, or C(O), the heterocycle being optionally substituted, and/or
- R2, R3, R4, R5, R′2, R′3, R′4, and R′5 form, in pairs with adjacent radicals, an optionally substituted, saturated or unsaturated (hetero)cycle;
- wherein when the compound of formula (I) and/or (II) is positively charged, then it comprises as many anionic counterions as cationic charges to achieve the electrical neutrality of the molecule;
- and
- composition (2) is aqueous, and comprises one or more ingredients chosen from:
- i) hydrotropic solvents;
- ii) anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants, or mixtures of two or more thereof;
- iii) anionic polymers, cationic polymers, nonionic polymers, amphoteric or zwitterionic polymers, any of which may be optionally associative, or optionally substantive, or mixtures of two or more thereof;
- wherein composition (2) does not comprise any dye (I) or (II).
17 more elements
A device or kit comprising at least two compartments separate from one another comprising, composition (1) in a first compartment and composition (2) in a second compartment, wherein:
- composition (1) is anhydrous and comprises one or more dyes chosen from compounds of formulae (I) and/or (II) below:
- wherein in formulae (I) and (II):
- Z1 represents an oxygen atom or a group —N(R6)—;
- Z′1 represents an oxygen atom or a group —N(R′6)—;
- with the proviso that when Z1 represents —N(R6)— and/or Z′1 represents —N(R′6)—, then R1 and R6 and/or R′1 and R′6, respectively, may form, together with the nitrogen atom to which they are attached, an optionally substituted, 5- to 8-membered, optionally cationic, saturated, unsaturated, or aromatic heterocycle;
- R1, R′1, R6, and R′6 each independently represent:
- a hydrogen atom, or
- a C1-C10 alkyl radical optionally interrupted with one or more non-adjacent heteroatoms, and/or optionally substituted;
- R2, R3, R4, R5, R′2, R′3, R′4, and R′5 each independently represent:
- a hydrogen atom,
- an optionally substituted C1-C4 alkyl radical, or
- a group chosen from —NH2, —N(H)R10, —N(R11)R12, OH, or —OR9, with R9 and R10 representing an optionally substituted, linear or branched C1-C6 alkyl, R11 and R12, which may be identical or different, representing an optionally substituted, linear or branched C1-C6 alkyl, wherein R11 and R12 optionally form, together with the nitrogen atom to which they are attached, a saturated, unsaturated or aromatic 5- to 8-membered heterocycle optionally containing one or more other heteroatoms or groups chosen selected from N, O, S, S(O)2, and C(O), the heterocycle being optionally substituted, and/or
- R2, R3, R4, R5, R′2, R′3, R′4, and R′5 form, in pairs with adjacent radicals, an optionally substituted, saturated or unsaturated (hetero)cycle;
- wherein when the compound of formula (I) and/or (II) is positively charged, then it comprises as many anionic counterions as cationic charges to achieve the electrical neutrality of the molecule;
- and
- composition (2) is aqueous, and comprises one or more ingredients chosen from:
- i) hydrotropic solvents;
- ii) anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants, or mixtures of two or more thereof;
- iii) anionic polymers, cationic polymers, nonionic polymers, amphoteric or zwitterionic polymers, any of which may be optionally associative, or optionally substantive, or mixtures of two or more thereof;
- wherein composition (2) does not comprise any dye (I) or (II).
17 more elements
Dependencies are inferred from the claim text.