Metal complexes of bis-hydrazones
US4016157A · kind A · utility
7Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1975 |
| Grant date | Apr 5, 1977 |
| Priority date | — |
| Expiry date | Aug 26, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Bis-hydrazone metal complexes of the formula ##STR1## wherein A denotes an isocyclic or heterocyclic radical, R denotes a H atom, an alkyl group or an aryl radical, M denotes a divalent transition metal and zinc or cadmium, X.sub.1 and X.sub.2 independently of one another represent alkyl, cycloalkyl, aralkyl or aryl radicals, or conjointly form a fused carbocyclic or heterocyclic aromatic ring, L denotes a ligand having one or more coordinating N or S atoms, and n denotes the number 1 - 5, are useful for coloring plastic and lacquers in fast yellow to red shades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.