Metal complexes of bis-azomethines from hydroxy-aldehydes and alkylene diamines
US4044036A · kind A · utility
19Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Sep 9, 1974 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Sep 9, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B55/005
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
1:1 metal complexes of bis-azomethines of the formula ##STR1## wherein R denotes an alkylene radical which contains 2-8 C atoms and is optionally interrupted by hetero-atoms, X denotes a H or halogen atom or an alkyl, alkoxy, carboxyl, alkoxy-carbonyl or phenylazo group and Y and Z denote H or halogen atoms, or wherein the substituents Y and Z form a fused benzene ring, if R contains a hetero-atom, Y and Z must not be H atoms, and if R contains 2 C atoms, X, Y and Z must not be H atoms, and a metal are valuable pigments coloring plastics and printing inks in fast yellow to range shades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.