Colorants in foam form
AssigneeHenkel AG & Co. KGaA
InventorsFrank Janssen, Jurgen Schopgens, Sabine Babiel, Armin Wadle, Udo Erkens
Life of this patent
Estimating the term…
Abstract
An agent in foam form for coloring keratin-containing fibers, in particular human hair, under induction by atmospheric oxygen and methods for coloring keratin-containing fibers using such agent is provided. In an embodiment, the agent comprises, in a cosmetically acceptable carrier, at an alkaline pH of 8 to 10.5, (a) as a color-forming component in the form of a dye precursor of a nature-analogous dye an indole and/or indoline derivative, (b) an alkalizing agent, and (c) a propellant, the agent containing no additional oxidizing agent for the color-forming components.
Claims18
An agent in foam form for coloring keratin-containing fibers, in particular human hair, under induction by atmospheric oxygen, the agent comprising, in a cosmetically acceptable carrier, at an alkaline pH of 8 to 10.5:
- (a) as a color-forming component in the form of a dye precursor of a nature-analogous dye an indole and/or indoline derivative of formula (I),
- in which independently of one another
- R1 denotes hydrogen, a C1-C4 alkyl group or a C1-C4 hydroxyalkyl group,
- V denotes CHR3 and W denotes CHR2, such that the bond between V and W corresponds to a single bond,
- or V denotes CR3 and W denotes CR2, such that the bond between V and W corresponds to a double bond, wherein in each case
- —R2 denotes hydrogen or a —COOH group, in which the —COOH group can also be present as a salt with a physiologically tolerable cation,
- —R3 denotes hydrogen or a C1-C4 alkyl group,
- R4 and R5 independently of one another denote hydrogen, a C1-C4 alkyl group or a —CO—R6 group, in which R6 denotes a C1-C4 alkyl group,
- and/or one of the physiologically tolerable salts thereof with an organic or inorganic acid,
- (b) an alkalizing agent,
- (c) a propellant, and
- (d) a fatty alcohol in an amount of from about 0.1 to about 1.5 wt. % based on the total weight of the agent;
- wherein no additional oxidizing agent is included as a color-forming component.
A method for coloring keratin-containing fibers, the method comprising the steps of:
- applying an agent to the keratin-containing fibers, the agent comprising, in a cosmetically acceptable carrier, at an alkaline pH of 8 to 10.5:
- (a) as a color-forming component in a form of a dye precursor of a nature-analogous dye an indole and/or indoline derivative of formula (I),
- in which independently of one another
- R1 denotes hydrogen, a C1-C4 alkyl group or a C1-C4 hydroxyalkyl group,
- V denotes CHR3 and W denotes CHR2, such that the bond between V and W corresponds to a single bond,
- or V denotes CR3 and W denotes CR2, such that the bond between V and W corresponds to a double bond, wherein in each case
- —R2 denotes hydrogen or a —COOH group, in which the —COOH group can also be present as a salt with a physiologically tolerable cation,
- —R3 denotes hydrogen or a C1-C4 alkyl group,
- R4 and R5 independently of one another denote hydrogen, a C1-C4 alkyl group or a —CO—R6 group, in which R6 denotes a Ci-C4 alkyl group,
- and/or one of the physiologically tolerable salts thereof with an organic or inorganic acid,
- (b) an alkalizing agent,
- (c) a propellant, and
- (d) a fatty alcohol in an amount of from about 0.1 to about 1.5 wt. % based on the total weight of the agent;
- wherein no additional oxidizing agent is included for the color-forming components;
- allowing the agent to remain on the keratin-containing fibers for a contact period;
- and
- rinsing the agent from the keratin-containing fibers after the contact period.
Dependencies are inferred from the claim text.