Photographic silver halide materials containing dispersed...

Details Photographic silver halide materials containing dispersed... Photographic silver halide materials containing dispersed...

G - Physics

03

C

96/136

G03C 1/83 (2006.01) C09B 23/01 (2006.01)

Patent

CA 1148788

Abstract Light-sensitive photographic silver halide material comprising a hydrophilic colloid layer containing in dispersed state a light-absorbing merostyryl dye that corresponds to the following general formula: Image in which: R1 is hydrogen, alkyl, substituted alkyl, aryl. substi- tuted arly, aralkyl or substituted aralkyl, R2 is carboxy, alkoxycarbonyl, aryloxycarbonyl, carba- moyl, ureido, sulphamoyl or one of the groups repre- sented by R1 ; at least one of R1 and R2 being or containing carboxy or carbamoyl, R3 is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, and when R3 is alkyl or alkoxy it stands in ortho or para in respect of the hydroxy group, which itself is in ortho or para in respect of the methine group, said merostyryl dye containing no group that renders the dye soluble in the hydrophilic colloid layer.

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