Photographic elements containing amino-substituted hydroxy-pyridones
US4233399A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1979 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | May 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/83
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pyridone dyestuffs of the formula ##STR1## are provided wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group, PA0 R.sub.2, R.sub.3, R.sub.4 each independently represent hydrogen, halogen, alkoxy, or optionally substituted alkyl or cycloalkyl, PA0 R.sub.5 and R.sub.6 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or R.sub.5 and R.sub.6, R.sub.3 and R.sub.5 and R.sub.4 and R.sub.6 form heterocyclic rings, PA0 Y is hydrogen or hydroxy, --CN, --COOR.sub.7, --CONR.sub.7 R.sub.8 or --COR.sub.7 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, and PA0 Z represents --CN, --COOR.sub.9, --CONR.sub.9 R.sub.10, --SO.sub.3 H, --SO.sub.3 .crclbar. or --COR.sub.9, where R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical. The dyestuffs can be used e.g. as cyan image dyestuffs in photographic material, as diffusible dyes which may become mordanted in a receptor layer or as fil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.