Composition comprising a particular oxidation dye precursor and a particular carboxylic acid
US12409124B2 · kind B2 · utility
0Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2021 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Dec 16, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/882
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a composition comprising at least one oxidation dye coupler chosen from 6-hydroxy benzomorpholine of formula (I), hydroxyethyl-3.4-methy lenedioxyaniline of formula (II). 2-amino-5-ethylphenol of formula (III), one of their addition salts, their solvates and/or the solvates of their salts, and at least one compound chosen from N,N-dicarboxymethyl glutamic acid, one of its salts and mixtures thereof. The invention also relates to a process for dyeing keratin fibres, preferably the hair, comprising the application of the composition to said keratin fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.