Color photographic silver halide material with sulfonylphenol oil former
US4898811A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3885
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color photographic silver halide material which, in at least one silver halide emulsion layer, contains a magenta coupler corresponding to formula I or (II) below ##STR1## in which R.sub.1 represents alkyl, aryl or a ballast group, PA1 R.sub.2 represents a ballast group, alkyl or aryl, PA1 Z represents hydrogen or a group releasable on reaction with the developer oxidation product, and a compound corresponding to formula (III) ##STR2## in which R.sub.3 represents alkyl, alkoxy, aryl, optionally substituted amino or the residue of a heterocycle, PA1 R.sub.4 represents COR.sub.5, NHR.sub.6, S(O).sub.n R.sub.7, PA1 K.sub.5 represents OR.sub.8, NHR.sub.8, alkyl, aryl or a heterocycle, PA1 R.sub.6 represents SO.sub.2 R.sub.8, COR.sub.8 or CONHR.sub.8, PA1 R.sub.7 represents alkyl, aryl or NHR.sub.3, PA1 R.sub.8 represents alkyl or aryl and PA1 n=0, 1 or 2, with the exception of compounds in which R.sub.3 is a carboxymethoxyphenyl, carboxymethoxy, alkoxycarbonylmethoxy or alkoxycarbonylmethoxyphyl radical substituted at the methylene group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.