Anti-sludging compounds in photographic material

Details Anti-sludging compounds in photographic material Anti-sludging compounds in photographic material

1992-06-01

1993-02-16

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430488, 430961, 430929, G03C 176

Patent

active

051870541

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.

REFERENCES:
patent: 3438777 (1969-04-01), Willems et al.
patent: 3769015 (1973-10-01), Itoh et al.
patent: 3976875 (1966-10-01), Schwalenstocker

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