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US 12,109,291 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 precursor 2-(1,3-benzodioxol-5-ylamino)ethanol in combination with the oxidation base 2-methoxymethyl-para-phenylenediamine.
Claims20
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) an oxidation base 2-methoxymethyl-para-phenylenediamine and/or at least one of its physiologically tolerated salts,
- wherein the agent is substantially free of any resorcinol compound of structure (I)
- in which
- X means a hydrogen atom or a C1-C10 alkyl group,
- wherein the agent is further substantially free of any chlorinated aromatic nitro dyes, and
- wherein the agent is further substantially free of dissolved hydrogen peroxide.
4 more elements
A multicomponent kit-of-parts for oxidative dyeing of keratinous fibers, comprising at least two separately packaged components (C1) and (C2), wherein
- a 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 oxidation base 2-methoxymethyl-para-phenylenediamine and/or at least one of its physiologically tolerated salts,
- a second component (C2) being an aqueous hydrogen peroxide-containing composition with acidic pH,
- wherein all components of the kit are free of any resorcinol compound of structure (I)
- in which
- X means a hydrogen atom or a C1-C10 alkyl group,
- wherein all components of the kit are further substantially free of any chlorinated aromatic nitro dyes.
5 more elements
Dependencies are inferred from the claim text.