Azo-pigment containing hydroxy naphthoic acid amide and an iminooxoisoindolenine components
US4638052A · kind A · utility
1Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B43/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An azo-pigment represented by the general formula: ##STR1## where R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, an unsubstituted phenyl group or a substituted phenyl group, R.sub.2 is a residue of a phenylenediamine, and R.sub.3 is a hydrogen atom, a methyl group, a methoxy group or a halogen atom. The azo-pigment of the present invention is useful in applications where azo-pigments are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.