Pigmentary imido-perinones
US4039545A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1975 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Jun 23, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Imido-perinones falling within one of the formulae: ##STR1## wherein R.sub.1 represents the tetravalent residue of a substituted or unsubstituted aromatic hydrocarbon, R.sub.2 represents a substituted or unsubstituted aliphatic or aromatic radical and X represents a primary amino, carboxy or hydroxy group, process for the preparation of such imido perinones which comprises condensing a tetracid of the formula: ##STR2## or the corresponding anhydride with 4,5-diamino-1,8-naphthalic anhydride at the rate of at least two moles of diamine per mole of tetracid and then condensing the perinone dianhydride thus obtained with an amine of the formula: EQU H.sub.2 N -- R.sub.2 -- X wherein R.sub.1, R.sub.2 and X have the same significance as in claim 1, at the rate of at least two moles of amine, per mole of perinone, and the use of such imido-perinones in the coloration of lacquers, plastic materials or synthetic fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.