Catalyzed bismuth dye system for human hair
US4583986A · kind A · utility
40Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1981 |
| Grant date | Apr 22, 1986 |
| Priority date | — |
| Expiry date | Nov 13, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dyeing system for human hair is provided comprising a bismuth salt and a catalyst which has a chemical structure having either an oxygen atom possessing a resonating double bond or an oxygen atom of an ether group attached to a carbon atom, such catalyst being characterized by a high degree of solubility in water and having a molecular weight of from about 50 to about 170.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.