Yellow anionic disazo dyes

A compound of the formula (13)

• in which
• R1 represents hydrogen, C1-C4alkyl, C4-C4alkoxy or SO3H,
• R2 represents SO3H or CO2H,
• R3 represents hydrogen, a C1-C4alkyl group, halogen, hydroxy, C1-C4alkoxy, carboxy, NH2 or NHC1-C4alkyl,
• R3a represents hydrogen or NH2 and
• A1 and A2, independently of the other, is selected from the group consisting of
• an acetoacetylated amine of the formula (2)
• in which
• X1 represents C1-C4alkyl, or phenyl which is unsubstituted or monosubstituted by C1-C4alkyl, C1-C4alkoxy or halogen and
• X2 represents phenyl which is di- or tri-substituted by one or two SO3H, SO2NHC1-C4alkyl groups which alkyl groups may be substituted, SO2C1-C4alkyl, C1-C4substituted or unsubstituted alkyl, hydroxy, C1-C4alkoxy, halogen, CF3, NH2, NHCOC1-C4alkyl, NHCOOC1-C4alkyl, NHCONHC1-C4alkyl, CO2H, CONHC1-C4alkyl or NO2;
• or X2 is phenyl which is mono-substituted by SO3H, SO2NHC1-C4 alkyl groups which alkyl groups may be substituted, SO2C1-C4alkyl, hydroxy, C1-C4alkoxy, CF3, NH2, NHCOC1-C4alkyl, NHCOOC1-C4alkyl, NHCONHC1-C4alkyl, CO2H, CONHC1-C4alkyl or NO2;
• or X2 is a 1- or 2-naphthyl residue which is unsubstituted or substituted by one or two SO3H, SO2NHC1-C4alkyl, carboxy, CONHC1-C4alkyl, carboxyC1-C4alkyl or carboxyaryl groups or a 5- or 6-membered heterocyclic ring containing 1-3 heteroatoms and which may be benzannelated and be further substituted by C1-C4alkyl, C1-C4alkoxy or halogen and which may be attached to the NH-atom in formula (2) either via the hetero- or benzo-nucleus, in the case of benzannelated heterocycles;
• a derivative of barbituric acid of the formula (3)
• in which
• Y represents O, NCN or NCONH2;
• a 2,4,6-triaminopyrimidine derivative;
• a pyridone derivative of the formula (4)
• in which
• Q1 represents hydrogen, hydroxy, C1-C2alkyl, hydroxyethyl, 2-(C1-C2alkoxy)alkyl, C1-C2alkoxy, COOH, CONH2 or COOC1-C2alkyl,
• Q2 represents hydrogen, CN, CONH2, halogen, SO3H or C1-C2alkyl which is unsubstituted or substituted by hydroxy, phenyl or SO3H,
• Q3 represents hydrogen, phenyl, C1-C2alkylphenyl, cyclohexyl or C1-C4alkyl which is unsubstituted or substituted by hydroxy, CN, C1-C2alkoxy or SO3H and
• Q4 represents hydrogen or hydroxy;
• an aminopyrazole or a pyrazolone derivative of formula (5), (6), (7) or (8)
• in which
• R4 represents hydrogen, substituted or unsubstituted C1-C4alkyl, C2-C4alkenyl, NHCOC1-C4alkyl or CO2H,
• R5 represents hydrogen, halogen, C1-C4alkyl, SO3H or CO2H,
• R6 represents halogen, C1-C4alkyl, SO3H or CO2H in formula (5) and represents halogen, SO3H or CO2H in formula (7);
• and
• R7 represents hydrogen or C1-C4alkyl;
• and
• a benzoic acid derivative of formula (9) or (10)
• in which
• R7 represents hydrogen or C1-C4alkyl and
• R8 represents hydrogen or hydroxy, or
• A1 and A2, each one independently of the other, represent a phenol residue of the formula (11) or (12)
• in which
• R9 and R10, each one independently of the other, represent hydrogen, C1-C4alkyl, C1-C4alkoxy, hydroxy, halogen, NH2, NHCOC1-C4alkyl, NO2, SO3H, CO2C1-C4alkyl or CONHC1-C4alkyl groups,
• with the proviso that in the compounds of formula (13), if
• R1, R2, R3 and R3a each, independently of the others, are hydrogen or SO3H, then
• A1 and A2 are not both a 1-phenyl or 1-sulphophenyl-3-methyl-5-aminopyrazole residue, or, if
• R1, R3 and R3a are hydrogen and R2 is SO3H and one of
• A1 and A2 represents a 1-sulphophenyl-3-methyl pyrazol-5-one residue, then the other is not a residue of formula (11) in which both
• R9 and R10 are hydrogen, or if
• A1 represents a 1-nitrophenyl-, a 1-phenyl- or an unsubstituted 3-methyl pyrazol-5-one residue,
• A2 is not a residue of formula (9) in which R7 represents hydrogen, or if
• R1, R3 and R3a represent hydrogen, R2 is CO2H and
• A1 represents a residue of formula (9), in which R7 is hydrogen,
• A2 is not a residue of formula (2) or formula (7).