Monazo pigments containing hydroxynaphthoylaminobenzimidazalone radical
US4229344A · kind A · utility
4Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1978 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | May 30, 1998 |
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 of the following formula ##STR1## These pigments are useful for coloring high molecular weight materials in orange to brown shades of especially good fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.