Photographic acetanilide couplers with novel ballast group...

Details Photographic acetanilide couplers with novel ballast group... Photographic acetanilide couplers with novel ballast group...

G - Physics

03

C

96/105

G03C 1/06 (2006.01) G03C 7/305 (2006.01) G03C 7/36 (2006.01)

Patent

CA 1296214

PHOTOGRAPHIC ACETANILIDE COUPLERS WITH NOVEL BALLAST GROUP AND PHOTOGRAPHIC ELEMENTS CONTAINING THEM Abstract of the Disclosure Novel photographic acetanilide dye-forming couplers comprise a group comprising a stabilizer moiety represented by the formula: Image wherein R2 is halogen or alkoxy having 1 to 4 carbon atoms; R3 is hydrogen, halogen, alkyl or alkoxy; R4, R5, R6 and R7 are individually alkyl; A is Image , Image , Image , -O- , or -S-; R8 and R9 are individually hydrogen or alkyl; R10 is hydrogen, alkyl or aryl; and X is a linking group. Such couplers provide advantageous stability in dyes formed from the couplers. These couplers are useful in photographic silver halide materials and processes.

551774

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