Photographic materials

Radiation imagery chemistry: process – composition – or product th – Color imaging process – Forming combined chromatic and achromatic images

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430365, 430376, 430402, 430543, 430552, 430553, 430565, 430 17, G03C 140

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active

043871585

ABSTRACT:
Photographic silver halide material which comprises at least one silver halide emulsion layer coated on a support, there being present in the silver halide emulsion layer(s), or in a layer in operative contact with at least one silver halide emulsion layer, a compound of the formula ##STR1## wherein W is hydrogen, alkyl, --NHCOR.sup.1 or --COR.sup.1, wherein R.sup.1 is alkyl or alkenyl, cycloalkyl, aralkyl, aryl, phenoxymethylamino or halogen; X is a substituent in the coupling position and is a leaving group selected from hydrogen, chlorine, bromine, --SR.sup.11 wherein R.sup.11 is alkyl, aryl or a heterocyclic group, or X is a nitrogen-containing heterocyclic residue attached at a ring nitrogen atom; Y is a group having the formula ##STR2## wherein Q is selected from the residues: (a) --COOR.sup.4 or --CONR.sup.4 R.sup.5 where R.sup.4 is hydrogen, alkyl optionally interrupted by 1 or more oxygen atoms, alkenyl, cycloalkyl, aralkyl or aryl, and R.sup.5 is hydrogen or alkyl or R.sup.4 and R.sup.5, together with the nitrogen atom to which they are each bonded, may form a 5- or 6-membered heterocyclic ring;

REFERENCES:
patent: 4126461 (1978-11-01), Pupo et al.
patent: 4252893 (1981-02-01), Iwamuro
patent: 4254213 (1981-03-01), Masuda et al.

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