Lightening dye composition comprising at least one cationic direct dye containing mixed chromophores
US7172633B2 · kind B2 · utility
20Cited by
28References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2004 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | May 13, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a lightening dye composition comprising, in a suitable dyeing medium, an oxidizing agent, an alkaline agent in an amount such that the pH of the composition is greater than 7, and a mixed cationic dye comprising several chromophores linked together via a linker, at least two of the chromophores being different, the chromophores having an absorbance of between 400 and 800 nm. The invention makes it possible to obtain particularly fast colorations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.