Bis-azomethine metal complex colorants from hydroxycoumarin derivatives or hydroxychromone derivatives
US3963708A · kind A · utility
4Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1975 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Jul 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Bis-azomethine metal complex colorants of the formulae ##SPC1## Wherein M denotes a divalent transition metal cation, zinc ion or cadmium ion, X denotes an isocyclic or heterocyclic aromatic radical to which the two nitrogen atoms are bonded in the o- or peri-position to one another and Y.sub.1 and Y.sub.2 denote hydrogen, halogen, alkyl, aryl, nitro, alkoxy, phenoxy or hydroxyl, which are suitable for pigmenting high-molecular organic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.