(2,5-diisopropoxycarbonylbenzene-azo-2-hydroxy-3-carbamoyl naphthalene) pigment
US4719293A · kind A · utility
2Cited by
1References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1984 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Oct 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B33/147
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to disazo pigments of the formula ##STR1## wherein R is an ethyl, propyl or isopropyl radical. These pigments colour plastics, especially rigid PVC, in brown shades of excellent fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.