Water-soluble cationic polymer dye compounds and process for producing the same
US4228259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1977 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Aug 8, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S534/03
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dye for keratinic material comprises a water-soluble cationic polymer having a molecular weight ranging between about 800 and 10,000 and having secondary, tertiary or quaternary ammonium amine groups wherein said amine groups are either a part of, or aid in the direct or indirect linking to the polymer chain, an aryl or arylaliphatic chromophore or chromogen group carrying compound, with the proviso that when the main chain of the polymer has amine groups derived from the said chromophore or chromogen group carrying compound, the said main chain must also have at least 10 percent aliphatic amine groups relative to the total number of amine groups of the said chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.