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US 12,178,897 B2Granted
Oxidative dyeing agent for keratin fibers comprising novel dye precursor combinations
AssigneeHenkel AG & Co. KGaA
InventorsRazi Abbas, Tugce Cansev, Thomas Hippe, Astrid Kleen, Hartmut Manneck, Stefan Hoepfner, Tiffany Lea Fielder
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Abstract
The subject of the present application is an agent for the oxidative dyeing of keratinous fibers, in particular human hair, which contains the coupling oxidation dye precursors 2-(1,3-benzodioxol-5-ylamino)ethanol and 1-phenyl-3-methylpyrazol-5-one in combination with at least one oxidation base.
Claims17
An agent for the oxidative dyeing of keratinous fibers, comprising:
- (A) a coupling oxidation dye precursor 2-(1,3-benzodioxol-5-ylamino) ethanol and/or at least one of its physiologically tolerated salts, and
- (B) a coupling oxidation dye precursor 1-phenyl-3-methylpyrazol-5-one and/or at least one of its physiologically tolerated salts, and
- (C) at least one oxidation dye precursor, said oxidation dye precursor being an oxidation base-type,
- wherein the agent is substantially free of any resorcinol compound of structure (1)
- in which X means a hydrogen atom or a C1-C10 alkyl group,
- wherein the agent is substantially free of dissolved hydrogen peroxide.
3 more elements
A multicomponent kit-of-parts for oxidative dyeing of keratinous fibers, comprising at least two separately packaged components (C1) and (C2), wherein
- the first component (C1) is substantially free of dissolved hydrogen peroxide, and comprises:
- (A) the coupling oxidation dye precursor 2-(1,3-benzodioxol-5-ylamino) ethanol and/or at least one of its physiologically tolerated salts, and
- (B) the coupling oxidation dye precursor 1-phenyl-3-methylpyrazol-5-one and/or at least one of its physiologically tolerated salts, and
- (C) at least one oxidation dye precursor of the oxidation base-type,
- the second component (C2) is an aqueous hydrogen peroxide-containing composition with acidic pH wherein all components of the kit are free of any resorcinol compound of structure (1)
- in which X means a hydrogen atom or a C1-C10 alkyl group.
3 more elements
Dependencies are inferred from the claim text.