Monoazo pigments containing hydroxynaphthoylamino benzimidazolone radical
US4392999A · kind A · utility
5Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1981 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Sep 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B43/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The instant invention relates to monoazo pigments containing a hydroxynaphthoylaminobenzimidazolone radical which correspond to the formula ##STR1## said new pigments being useful for coloring high molecular materials in orange to brown shades of especially good fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.