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US 2006/0137110 A1Published application
Composition for dyeing keratinous fibers comprising at least one azodiazine direct dye containing an aniline group and dyeing method using it
AssigneeL'oreal
InventorsAlain LaGrange, Sylvain Kravtchenko
Life of this patent
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Abstract
The present invention relates to a composition for dyeing keratinous fibers, containing at least one azodiazine direct dye corresponding to the following formula (I): The present invention also relates to a method for dyeing keratinous fibers using these direct dyes.
Claims31
A composition for dyeing keratinous fibers comprising at least one direct dye chosen from compounds of formula (I):
- wherein:
- R1 and R2 are, independently of each other, chosen from:
- a hydrogen atom;
- and
- alkyl groups having from 1 to 30 carbon atoms, said alkyl groups optionally substituted with one or more hydroxy groups;
- R3 is chosen from a hydrogen atom, alkyl groups having from 1 to 30 carbon atoms, and hydroxy groups;
- R4 is chosen from a hydrogen atom and alkyl groups having from 1 to 30 carbon atoms;
- R5 and R6, independently of each other, comprise alkyl groups having from 1 to 30 carbon atoms, or together with the nitrogen atom to which they are attached form a heterocycle;
- and
- A comprises an anionic counterion.
7 more elements
A method for the direct dyeing of keratinous fibers, comprising:
- applying to the keratinous fibers at least one direct dye chosen from compounds of formula (I):
- wherein:
- R1 and R2 are, independently of each other, chosen from:
- a hydrogen atom;
- and
- alkyl groups having from 1 to 30 carbon atoms, said alkyl groups optionally substituted with one or more hydroxy groups;
- R3 is chosen from a hydrogen atom, alkyl groups having from 1 to 30 carbon atoms, and hydroxy groups;
- R4 is chosen from a hydrogen atom and alkyl groups having from 1 to 30 carbon atoms;
- R5 and R6, independently of each other, comprise alkyl groups having from 1 to 30 carbon atoms, or together with the nitrogen atom to which they are attached form a heterocycle;
- and
- A comprises an anionic counterion;
- leaving the composition on the keratinous fibers for a sufficient time to obtain a color;
- optionally rinsing the keratinous fibers to remove the dyeing composition;
- optionally washing the keratinous fibers one or more times, rinsing after each wash;
- and
- drying the keratinous fibers.
13 more elements
A method for dyeing keratinous fibers comprising:
- applying to the keratinous fibers (a) at least one oxidation dye having a first color developed with an oxidizing agent and (b) at least one direct dye chosen from compounds of formula (I):
- wherein:
- R1 and R2 are, independently of each other, chosen from:
- a hydrogen atom;
- and
- alkyl groups having from 1 to 30 carbon atoms, said alkyl groups optionally substituted with one or more hydroxy groups;
- R3 is chosen from a hydrogen atom, alkyl groups having from 1 to 30 carbon atoms, and hydroxy groups;
- R4 is chosen from a hydrogen atom and alkyl groups having from 1 to 30 carbon atoms;
- R5 and R6 are, independently of each other, comprise alkyl groups having from 1 to 30 carbon atoms, or together with the nitrogen atom to which they are attached form a heterocycle;
- and
- A comprises an anionic counterion;
- leaving the composition on the keratinous fibers for a sufficient time to obtain a second color on the keratinous fibers;
- optionally rinsing the keratinous fibers to remove the dyeing composition;
- optionally washing the keratinous fibers one or more times, rinsing them after each wash;
- and
- drying the keratinous fibers.
13 more elements
Dependencies are inferred from the claim text.