Catalyzed dye system
US11369554B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2019 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Mar 26, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/805
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a dye system comprising at least one dye precursor, an oxidizing agent, and a catalyst. The dye system operates, ideally, at a pH of at least about 9. The dye system may enable faster and less damaging hair color treatment techniques. The invention further relates to methods for making and using said dye system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.