Sulfur-containing secondary para-phenylenediamines dye compositions comprising such para-phenylenediamines, processes, and uses thereof
US7347879B2 · kind B2 · utility
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17References
29Claims
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Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Aug 27, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present disclosure relates to a novel family of sulfur-containing secondary para-phenylenediamines, to processes for preparing them, to compositions for dyeing keratin fibers, for example keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least such one sulfur-containing secondary para-phenylenediamine. The present disclosure also relates to processes for dyeing keratin fibers with the compositions according to the present disclosure and to multi-compartment dyeing kits containing such compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.