Filter dye for photographic element

Details Filter dye for photographic element Filter dye for photographic element

G - Physics

03

C

96/186

G03C 1/815 (2006.01) G03C 1/83 (2006.01) G03C 5/16 (2006.01)

Patent

CA 1286139

FILTER DYE FOR PHOTOGRAPHIC ELEMENT Abstract of the Disclosure Dyes having the structure Image , wherein A represents a substituted or unsubstituted nucleus having a carboxyphenyl or sulfonamidophenyl substituent selected from the group consisting of 2-pryazolin-5-ones free of any substituent bonded thereto through a carboxyl group, rhodanines, hydantoins, 2-thiohydantoins, 4-thiohydantoins, 2,4-oxazolidindiones, 2-thio-2,4-oxazolidindiones, isoxazolinones, barbiturics, 2-thiobarbiturics, and indandiones, R represents hydrogen, substituted or unsubsti- tuted alkyl of 1 to 4 carbon atoms, or benzyl, R1 and R2 each independently represents substituted or unsubstituted alkyl or aryl, or taken together with R5, R6, N, and the carbon atoms to which they are attached, represent the atoms needed to complete a julolydyl ring, R3 represents H, or substituted or unsubsti- tuted alkyl or aryl, R5 and R6 each independently represents H, or R5 taken together with R1, or R6 taken to- gether with R2, represent the atoms necessary to complete a carbocyclic ring such as tetrahydro- quinoyl, and m is 0 or 1 are disclosed. The dyes are useful as filter dyes in photographic filter layers.

553294

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