Patent · US Expired

Color photographic silver halide material with sulfonylphenol oil former

US4898811A · kind A · utility

10Cited by
5References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 2, 1988
Grant dateFeb 6, 1990
Priority date
Expiry dateDec 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.