Anti-sludging compounds in photographic material

Abstract

A photographic material is disclosed containing in a non-light sensitive layer above the emulsion layer an anti-sludging compound corresponding to following general formula (I): ##STR1## wherein Ball represents a ballast group, L represents a divalent linking group and Z represents the necessary atoms to close a heterocyclic ring with the proviso that said heterocyclic ring contains no mercapto substituent. The divalent linking group is preferably chosen from the list of --O--, --S--, --CO--NR.sub.1 --, --NR.sub.2 --NR.sub.3 --,--SO.sub.2 --NR.sub.4 --, --O--CR.sub.5 R.sub.6 --CO--NH-- wherein each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 represents hydrogen, alkyl or aralkyl. The heterocyclic ring is preferably chosen from the list of imidazole, benzimidazole, 1,2,3-triazole, 1,2,4-triazole, benzotriazole, tetrazole, indazole, uracil and hydantoin. The non-light sensitive layer, wherein the anti-sludging compound is added, is preferably the top protective layer.

Dependencies are inferred from the claim text.