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US 4,230,870 AGranted
Novel photographic color couplers
AssigneeAgfa-Gevaert
InventorsHector A. Vanden Eynde, Raphael K. Van Poucke
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Abstract
Novel magenta forming color couplers for use in silver halide color photography are described which correspond to the formula: ##STR1## wherein R.sub.1 represents hydrogen, alkyl or aryl; R.sub.2 represents fluoroalkyl, cyanoalkyl or phenyl; X is hydrogen or a displaceable group; Ar represents phenylene and Y represents alkyl, aryl, alkylamino, arylamino or alkylarylamino.
Claims6
A colour coupler corresponding to the general formula:
- ##STR28## wherein:
- R.sub.1 represents hydrogen, alkyl or aryl,
- R.sub.2 represents a fluoroalkyl group X(CF.sub.2).sub.n -- wherein X is hydrogen or fluorine and n is 1 to 10, an .alpha.-cyanoalkyl group, or a phenyl group,
- X represents hydrogen or a substituent that exhibits 2-equivalent character,
- Ar represents a phenylene group, and
- Y represents an alkyl group, an aryl group, a monoalkylamino group, a monoarylamino group, a dialkylamino group or an alkylarylamino group.
3 more elements
Dependencies are inferred from the claim text.