Process for the production of photographic color images by the silver dye bleach process
US4404273A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Dec 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of photographic color images by the silver dye bleach process, by exposure, silver development, dye formation, dye bleach, silver bleach and fixing of a photographic material which, in a light-sensitive silver halide emulsion layer or in an adjacent layer, contains, dispersed in oil, an oil-soluble triazene of the formula ##STR1## and an oil-soluble coupling component of the formula ##STR2## in which Ar.sub.1 is aryl or an aromatic heterocyclic radical, R.sub.1 is hydrogen, alkyl, aryl, hydroxyl, --(CH.sub.2 CH.sub.2 O).sub.r --L.sub.1 or --OL.sub.1, in which L.sub.1 is alkyl and r is 1, 2 or 3, or R.sub.1 is ##STR3## in which V is hydrogen or alkyl, and R.sub.2 is alkyl, aryl or --(CH.sub.2 CH.sub.2 O).sub.r --L.sub.1, or R.sub.1 and R.sub.2, conjointly with the nitrogen atom to which they are bonded, form a ring, A.sub.1 and A.sub.2 independently of one another are an amine of the formula --NT.sub.1 T.sub.2, in which T.sub.1 and T.sub.2 independently of one another are hydrogen, alkyl or aryl, and X.sub.1 and X.sub.2 independently of one another are hydrogen or alkyl, X.sub.3 is hydrogen, alkyl, alkoxy, --O(C.sub.2 H.sub.4 O).sub.n, --H, --O(CH).sub.2…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.