Photographic silver halide emulsions containing acylacetanilide color couplers
AssigneeAgfa-Gevaert
InventorsRaphael Karel Van Poucke, Freddy Carolus Baeyens
Life of this patent
Estimating the term…
Abstract
Novel yellow forming color couplers for use in silver halide color photography are described which correspond to the formula: R--COCHXCONH--Ar--SO.sub.2 OY wherein R represents alkyl or phenyl, X represents hydrogen or a displaceable group; Ar represents phenylene and Y represents a carbocyclic aryl group.
Claims6
Method of producing a yellow colored photographic image in a photographic light-sensitive silver halide material comprising exposing a photographic light-sensitive silver halide material and developing it with an aromatic primary amino color developing agent in the presence of a benzoylacetanilide color coupler having the formula:
- ##SPC3##
- wherein
- R.sub.1 represents an alkoxy group,
- R.sub.2 represents alkoxy,
- X represents hydrogen, halogen, a --S--R' group wherein R' is an alkyl group, an aryl group or a heterocyclic group, a --O--R" group wherein R" represents an alkyl group or an aryl group, or an acyl group, and
- Y represents a carbocyclic aryl group.
A photographic element comprising at least one silver halide emulsion layer and a benzoylacetanilide color coupler corresponding to the formula:
- ##SPC4##
- wherein
- R.sub.1 represents an alkoxy group,
- R.sub.2 represents alkoxy,
- X represents hydrogen, halogen, a --S--R' group wherein R'is an alkyl group, an aryl group or a heterocyclic group, a --O--R" group wherein R" represents an alkyl group or an aryl group, or an acyl group, and
- Y represents a carbocyclic aryl group.
Dependencies are inferred from the claim text.