1,2,4-triazole derivatives substituted with a thio or seleno...

Details 1,2,4-triazole derivatives substituted with a thio or seleno... 1,2,4-triazole derivatives substituted with a thio or seleno...

G - Physics

03

C

96/134, 260/313

G03C 1/06 (2006.01) C07D 249/10 (2006.01) C07D 249/12 (2006.01) G03C 7/305 (2006.01)

Patent

CA 1099559

Abstract of the Disclosure Light-sensitive colour photographic material which contains on a base in at least one silver halide emulsion layer or an interlayer which is assigned to this and does not contain silver halide, at least one DIR coupler of the formula Image in which R is alkyl having 1 to 18 carbon atoms or aryl, D is hydrogen, optionally substituted alkyl having 1 to 18 carbon atoms, cyclo- alkyl having 3 to 10 carbon atoms, alkenyl having 2 to 18 carbon atoms, cycloalkenyl having 5 to 10 carbon atoms, aralkyl having 7 to 18 carbon atoms, cyano or halogen and G is a optionally substituted aliphatic hydrocarbon radical having 1 to 18 carbon atoms, the sum of the carbon atoms in the substituents D and G being at least 5, L1 is hydrogen or alkyl having 1 to 5 carbon atoms, L2 is alkyl having 1 to 18 carbon atoms, phenyl or phenyl substituted by halogen, alkyl or alkoxy, each having 1 to 18 carbon atoms, acylamino, sulphonamide groups or carboxamide groups and X is sulphur or selenium, and wherein the triazolyl radical released during the reaction of the coupler with an oxidation product of an aromatic developer containing primary amino groups has development-inhibiting effects. The DIR-couplers can contribute substantially to improving interlayer colour correction and to the image grain and the sharpness of the photographic images obtained after imagewise exposure and usual processing of said photographic material.

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