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US 5,690,697 AGranted
Set, process, and device for dyeing keratinous fibers with indoles or indolines and manganese salts at specific pH ranges
AssigneeL'oreal
InventorHenri Samain
Life of this patent
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Abstract
A set for dyeing keratinous fibers, a dyeing composition, and a process for dyeing keratinous fibers using this dyeing composition are disclosed. Also disclosed is a multi-compartment device, or kit, one of the compartments of which contains the composition of the invention.
Claims26
A set for dyeing keratinous fibres, which comprises,
- a dyeing composition (A), wherein said dyeing composition (A) comprises, in a medium appropriate for dyeing, from 0.05 to 10% by weight with respect to the total weight of said dyeing composition (A) of at least one indole or indoline compound and from 0.002 to 5% by weight of metal equivalents with respect to the total weight of the dyeing composition (A) of at least one manganese salt which has an oxidation number equal to 2 or 3, and
- a composition (B), wherein said composition (B) comprises, in a medium appropriate for dyeing, at least one basifying agent and at least one oxidizing agent selected from the group consisting of hydrogen peroxide, urea hydrogen peroxide, an alkali metal bromate and a persalt, wherein said oxidizing agent is present in an amount effective to accelerate the development of said indole or indoline compound,
- wherein the pH of said dyeing composition (A) is less than 7, and the pH of said dyeing composition (B) is greater than 8.5, or
- wherein the pH of said dyeing composition (A) ranges from 7 to 9, and the pH of said composition (B) is greater than 9.5, and
- wherein said dyeing composition (A) and said composition (B) are present in an amount effective to dye said keratinous fibres.
2 more elements
A process for dyeing keratinous fibres, which comprises the steps of:
- (I) applying firstly to said keratinous fibres a dyeing composition (A), wherein said dyeing composition (A) comprises, in a medium appropriate for dyeing, from 0.05 to 10% by weight with respect to the total weight of said dyeing composition (A) of at least one indole or indoline compound and from 0.002 to 5% by weight of metal equivalents with respect to the total weight of the dyeing composition (A) of at least one manganese salt which has an oxidation number equal to 2 or 3;
- (ii) applying secondly to said keratinous fibres a composition (B), wherein said composition (B) comprises, in a medium appropriate for dyeing, at least one basifying agent and at least one oxidizing agent selected from the group consisting of hydrogen peroxide, urea hydrogen peroxide, an alkali metal bromate and a persalt, wherein said oxidizing agent is present in an amount effective to accelerate the development of said indole or indoline compound;
- and
- (iii) subsequently rinsing said keratinous fibres;
- wherein the pH of said dyeing composition (A) is less than 7, and the pH of said composition (B) is greater than 8.5, or
- wherein the pH of said dyeing composition (A) ranges from 7 to 9, and the pH of said composition (B) is greater than 9.5 and
- wherein said composition (A) and said composition (B) are present in an amount effective to dye said keratinous fibres.
4 more elements
Dependencies are inferred from the claim text.