Dye polymers, their preparation and their use in dye compositions
US4314808A · kind A · utility
20Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1980 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | May 20, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/57
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dye polymer for use in dye compositions for coloring keratinic fibers comprises units of the formula ##STR1## wherein, R represents hydrogen or alkyl, x is a whole number equal at least to 2, and X represents the residue of a molecule of a dye or a dye precursor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.