Recording material for colour photography

Details Recording material for colour photography Recording material for colour photography

C - Chemistry, Metallurgy

07

D

260/300, 260/556

C07D 285/12 (2006.01) C07D 233/72 (2006.01) C07D 233/88 (2006.01) C07D 263/44 (2006.01) C07D 277/52 (2006.01) C07D 285/135 (2006.01) G03C 7/00 (2006.01) G03C 7/36 (2006.01)

Patent

CA 1143375

Abstract of the Disclosure Recording material for colour photography, which contains, in at least one silver halide emulsion layer, at least one yellow coupler of the formula Image in which R1, R2, R3 and R4 are alkyl, cycloalkyl or aryl, X1, X2, X3 and X4 are radicals detachable during the coupling reaction and Y1 and Y2 are halogen, alkyl, alkoxy, alkylmercapto, -CN, -COOH, carbalkoxy, -NH2, -NHR5, -NR5R6 or -NHCOR5, in which R5 and R6 are alkyl or phenyl, Z is a divalent bridge member and r is 1 or 2. Photographic coloured images with excellent spectral absorption characteristics and good resistance to light, heat and moisture are obtained by exposing the recording material image-wise and developing.

329262

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