Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1985-08-16
1986-08-19
Downey, Mary F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430554, 430555, 430574, G03C 128, G03C 732
Patent
active
046070052
ABSTRACT:
A silver halide photographic emulsion comprising silver halide, binder, and sensitizing dyes of formulas (I), (II), (III): ##STR1## R.sub.1, R.sub.2 represent substituted or unsubstituted alkyl, one of R.sub.1 and R.sub.2 being sulfoalkyl or carboxyalkyl; R represents alkyl or aralkyl; W.sub.1, W.sub.2, W.sub.3, W.sub.4, being the same or different, represent hydrogen, halogen, aryl, alkyl, substituted alkyl, alkoxy, alkoxycarbonyl, carboxy, or hydroxy, provided W.sub.1 and W.sub.2 are not both a phenyl; X.sup..crclbar. represents an acid anion; n represents 1 or 2, n being 1 when the dye forms an intramolecular salt; ##STR2## R.sub.4, R.sub.5 represent substituted or unsubstituted alkyl; at least one of R.sub.4 and R.sub.5 being sulfoalkyl or carboxyalkyl; R.sub.3 represents ethyl, propyl, or aralkyl; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6, V.sub.7, being the same or different, represent hydrogen, halogen, aryl, alkyl, substituted alkyl, alkoxy, alkoxycarbonyl, carboxy, or hydroxy, provided any of V.sub.1 and V.sub.2, V.sub.2 and V.sub.3, V.sub.3 and V.sub.4, V.sub.5 and V.sub.6, or V.sub.6 and V.sub.7 may combine into a benzene ring; X.sub.1.sup..crclbar. represents an acid anion; m represents 1 or 2, m being 1 when the dye forms an intramolecular salt; ##STR3## R.sub.6, R.sub.7, R.sub.8, being the same or different, represent an aliphatic group; U.sub.1, U.sub.2, U.sub.3, U.sub.4, being the same or different, represent hydrogen, halogen, aliphatic hydrocarbon, acyl, acyloxy, alkoxycarbonyl, carbamoyl, sulfamoyl, cyano, trifluoromethyl or hydroxy; A represents a sulfo or carboxy; X.sub.2.sup..crclbar. represents an acid anion; h is 1 to 6; and e represents 1 or 2.
REFERENCES:
patent: 3840373 (1974-10-01), Shiba et al.
patent: 4179296 (1979-12-01), Sato et al.
patent: 4362813 (1982-12-01), Mihara et al.
Downey Mary F.
Fuji Photo Film Co. , Ltd.
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