1:1-Heterocyclic azo methine-metal complex dyestuffs
US4144258A · kind A · utility
2Cited by
5References
6Claims
0Family size
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Key dates
| Filing date | Oct 11, 1977 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Oct 11, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B23/166
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
1:1-Metal complexes of azomethines of the formula I ##STR1## wherein A and B are isocyclic or heterocyclic aromatic radicals, with however only one of the radicals A and B being a benzene ring, R represents a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or an aryl radical, and the complexing metal ions are bivalent cations of the transition metals, zinc ions or cadmium ions which are useful for pigmenting high molecular organic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.