Color photographic recording material containing non-diffusing electron donor compounds

Claim 2

In a color photographic recording material comprising at least one light-sensitive silver halide emulsion layer unit and, associated with this unit, a combination of a non-diffusing, reducible color providing compound which, in the reduced state, is capable of releasing a diffusible dye under alkaline development conditions, and an electron donor compound (ED compound) which is capable of reducing the non-diffusing, reducible color providing compound under the alkaline development conditions, the improvement according to which the material contains, as ED compound, a compound corresponding to the following general formula: R.sup.1 (--L.sup.1 ═L.sup.2).sub.n --NH--SO.sub.2 --X in which L 1 , L 2 each represent a methine group ##STR30## which may be a member of an at least partially unsaturated carbocyclic or heterocyclic ring system, R 1 represents --OR 2 , --SR 2 or --NHR 3 , R 2 represents hydrogen or a group which is capable of being hydrolysed under the conditions of photographic development, R 3 represents hydrogen, alkyl, aryl, acyl or a group which together with the nitrogen atom defined in R 1 and with L 1 , optionally with the inclusion of L 2 , completes a ring system having at least one 5-, 6- or 7-membered heterocyclic ring, n represents 1 or 2, and X represents any colorless organic group, at least R 1 , L 1 , L 2 or a ring completed by the said groups (R 1 , L 1 , L 2 ) or X contains a group which confers diffusion resistance.

Claim 3

The color photographic recording material as claimed in claim 1 which contains as ED compound, a compound corresponding to the following general formula: ##STR31## in which R 1 represents --OR 2 , --SR 2 or --NHR 3 , R 2 represents hydrogen or a group capable of being hydrolysed under the conditions of photographic development, R 3 represents hydrogen, alkyl, aryl, acyl or a group which, together with R 4 or R 5 or with R 4 and R 5 completes a ring system having at least one 5- 6- or 7-membered heterocyclic ring, R 4 represents hydrogen, hydroxyl, alkyl, aryl or acyl, including those alkyl, aryl and acyl groups which together with at least one of the groups R 1 and R 5 complete a ring system having at least one 5-, 6- or 7-membered ring, or it represents a nitrogen atom having two substituents, one of which substituents is a hydrogen atom or an alkyl aryl or acyl group, including those alkyl, aryl and acyl groups which together with R 1 complete a 5-, 6- or 7-membered heterocyclic ring having at least one nitrogen atom, the other substituent being a hydrogen atom or a group which together with R 5 completes a 5-, 6- or 7-membered heterocyclic ring having at least one nitrogen atom, but the two substituents on the nitrogen atom must not both be hydrogen, R 5 represents hydrogen or a group which together with R 1 completes a 5-, 6- or 7-membered heterocyclic ring containing nitrogen or together with R 4 completes a 5-, 6- or 7-membered carbocyclic or heterocyclic ring, and X represents any colorless organic group, at least one of the groups R 1 , R 4 , R 5 or a substituent on a ring completed by at least two of the aforesaid groups, or the group X containing a group which confers diffusion resistance.

Claim 4

In a color photographic recording material comprising at least one light-sensitive silver halide emulsion layer unit and, associated with this unit, a combination of a non-diffusing, reducible color providing compound which, in the reduced state, is capable of releasing a diffusible dye under alkaline development conditions, and an electron donor compound (ED compound) which is capable of reducing the non-diffusing, reducible color providing compound under the alkaline development conditions, the improvement according to which the material contains, as ED compound, a compound corresponding to the following general formula: ##STR32## in which X represents any colorless organic group, R 6 represents hydrogen, hydroxyl, alkyl, aryl, carbamoyl or sulfonylamino (--NH--SO 2 R, in which R represents alkyl, aryl or aralkyl), and R 7 represents hydrogen or alkyl, aryl, aralkyl, halogen, NO 2 , CN, COOH, COOR, carbamoyl, SO 3 H, sulfamoyl, acylamido, OH, OR or acyloxy, in which R represents alkyl, aryl or aralkyl, at least one of the groups R 6 , R 7 and X containing a group which confers diffusion resistance.

Claim 5

In a color photographic recording material comprising at least one light-sensitive silver halide emulsion layer unit and, associated with this unit, a combination of a non-diffusing, reducible color providing compound which, in the reduced state, is capable of releasing a diffusible dye under alkaline development conditions, and an electron donor compound (ED compound) which is capable of reducing the non-diffusing, reducible color providing compound under the alkaline development conditions, the improvement according to which the material contains, as ED compound, a compound corresponding to the following general formula: ##STR32## in which X represents any colorless organic group, R 6 represents hydrogen, hydroxyl, alkyl, aryl, carbamoyl or sulfonylamino (--NH--SO 2 R, in which R represents alkyl, aryl or aralkyl), and R 7 represents hydrogen or alkyl, aryl, aralkyl, halogen, NO 2 , CN, COOH, COOR, carbamoyl, SO 3 H, sulfamoyl, acylamido, OH, OR or acyloxy, in which R represents alkyl, aryl or aralkyl, at least one of the groups R 6 , R 7 and X containing a group which confers diffusion resistance.