Composition comprising at least one 1,8-dihydroxynaphthalene derivative and at least one basifying agent different from aqueous ammonia, process for dyeing keratin fibres using the composition

A process for dyeing keratin fibres, comprising treating the fibres with:

• i) at least one 1,8-dihydroxynaphthalene derivative of formula (I):
• inorganic or organic acids or bases, optical isomers, geometric isomers, tautomers, and/or solvates thereof, wherein:
• R1 and R6 are, independently of one another, chosen from:
• hydrogen atoms,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl or (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals,
• (C1-C4)alkylcarbonyl radical which can be functionalized with a (C1-C4)alkylcarbonyl radical or a (C1-C4)alkoxycarbonyl radical,
• C1-C4 alkoxy radicals,
• carboxaldehyde radicals —CHO, and
• sulphonic radicals —SO3H;
• R2 and R5 are, independently of one another, chosen from:
• hydrogen atoms,
• hydroxyl radicals,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl or (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals,
• (C1-C4)alkylcarbonyl radicals which can be functionalized with a hydroxyl radical,
• carboxaldehyde radicals —CHO, and
• sulphonic radicals —SO3H;
• R3 and R4 are, independently of one another, chosen from:
• hydrogen atoms,
• hydroxyl radicals,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl and (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals, and
• (C1-C4)alkylcarbonyl radicals which can be functionalized with a (C1-C4)alkyl-carbonyl radical or a (C1-C4)alkoxycarbonyl radical;
• R1 and R2 can form, together with the carbon atoms to which they are attached, a heterocycle optionally substituted with an oxo group, optionally functionalized with one or two C1-C4 alkyl radicals:
• with R and R′, which may be identical or different, representing a hydrogen atom or a C1-C4 alkyl radical;
• and
• ii) at least one basifying agent other than aqueous ammonia;
• wherein:
• the at least one 1,8-dihydroxynaphthalene derivative of formula (I) and the at least one basifying agent can be applied simultaneously or successively to the keratin fibers, and
• wherein the dyeing process does not involve aqueous ammonia.

A cosmetic composition comprising:

• i) at least one 1,8-dihydroxynaphthalene derivative of formula (I)
• inorganic or organic acids or bases, optical isomers, geometric isomers, tautomers, and/or solvates thereof, wherein:
• R1 and R6 are, independently of one another, chosen from:
• hydrogen atoms,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl or (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals,
• (C1-C4)alkylcarbonyl radical which can be functionalized with a (C1-C4)alkylcarbonyl radical or a (C1-C4)alkoxycarbonyl radical,
• C1-C4 alkoxy radicals,
• carboxaldehyde radicals —CHO, and
• sulphonic radicals —SO3H;
• R2 and R5 are, independently of one another, chosen from:
• hydrogen atoms,
• hydroxyl radicals,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl or (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals,
• (C1-C4)alkylcarbonyl radicals which can be functionalized with a hydroxyl radical,
• carboxaldehyde radicals —CHO, and
• sulphonic radicals —SO3H;
• R3 and R4 are, independently of one another, chosen from:
• hydrogen atoms,
• hydroxyl radicals,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl and (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals, and
• (C1-C4)alkylcarbonyl radicals which can be functionalized with a (C1-C4)alkyl-carbonyl radical or a (C1-C4)alkoxycarbonyl radical;
• R1 and R2 can form, together with the carbon atoms to which they are attached, a heterocycle optionally substituted with an oxo group, optionally functionalized with one or two C1-C4 alkyl radicals:
• with R and R′, which may be identical or different, representing a hydrogen atom or a C1-C4 alkyl radical;
• and
• ii) at least one basifying agent other than aqueous ammonia;
• with the proviso that the at least one 1,8-dihydroxynaphthalene derivative of formula (I) does not represent:

A multicompartment device comprising from 2 to 5 compartments containing from 2 to 5 compositions, wherein ingredients i) through v) are distributed in the compartments:

• i) at least one 1,8-dihydroxynaphthalene derivative of formula (I)
• inorganic or organic acids or bases, optical isomers, geometric isomers, tautomers, and/or solvates thereof, wherein:
• R1 and R6 are, independently of one another, chosen from:
• hydrogen atoms,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl or (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals,
• (C1-C4)alkylcarbonyl radical which can be functionalized with a (C1-C4)alkylcarbonyl radical or a (C1-C4)alkoxycarbonyl radical,
• C1-C4 alkoxy radicals,
• carboxaldehyde radicals —CHO, and
• sulphonic radicals —SO3H;
• R2 and R5 are, independently of one another, chosen from:
• hydrogen atoms,
• hydroxyl radicals,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl or (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals,
• (C1-C4)alkylcarbonyl radicals which can be functionalized with a hydroxyl radical,
• carboxaldehyde radicals —CHO, and
• sulphonic radicals —SO3H;
• R3 and R4 are, independently of one another, chosen from:
• hydrogen atoms,
• hydroxyl radicals,
• C1-C4 alkyl radicals which can be functionalized with at least one hydroxyl and (C1-C4)alkoxycarbonyl radical,
• carboxylic radicals —CO2H,
• (C1-C4)alkoxycarbonyl radicals, and
• (C1-C4)alkylcarbonyl radicals which can be functionalized with a (C1-C4)alkyl-carbonyl radical or a (C1-C4)alkoxycarbonyl radical;
• R1 and R2 can form, together with the carbon atoms to which they are attached, a heterocycle optionally substituted with an oxo group, optionally functionalized with one or two C1-C4 alkyl radicals:
• with R and R′, which may be identical or different, representing a hydrogen atom or a C1-C4 alkyl radical;
• ii) at least one basifying agent other than aqueous ammonia;
• iii) optionally, at least one chemical oxidizing agent;
• iv) optionally at least one oxidation catalyst;
• and
• v) optionally, at least one mordant.