Azo dyestuffs

A compound of formula (I)

• wherein
• each A is independently —NH— or —O—,
• B is
• —[—(CH2)1-4—O—(CH2)1-4]4C or
• [—(CH2)1-3—O—(CH2)1-3—O—(CH2)1-3]4C or
• [—(CH2)1-2—O—(CH2)1-2—O—(CH2)1-2—O—(CH2)1-2]4C or
• [(—CH2)1-4]2N(CH2)1-4N[(—CH2)1-4]2
• n′ and n″ are natural numbers and the sum of n′ and n″ is ≧2,
• m is a natural number ≧0,
• CC is a moiety of formula (a)
• wherein
• R1 is H;
• C1-4alkyl;
• C1-4alkyl monosubstituted by hydroxy, halogen, cyano or C1-4alkoxy,
• X1 and X2 independently of each other are halogen;
• an aliphatic, cycloahphatic, aromatic or heterocyclic amino group, said amino group comprising a protonatable nitrogen atom or a quaternary ammonium group, and being an aliphatic, cycloaliphatic, aromatic or heterocyclic mono(C1-4alkyl)-amino group, the C1-4alkyl-group being unsubstituted or monosubstituted by halogen, C1-4alkoxy, C1-4alkyl, phenyl or hydroxy;
• an aliphatic, cycloaliphatic, aromatic or heterocyclic di(C1-4alkyl)-amino group, the C1-4alkyl-groups being independently unsubstituted or monosubstituted by halogen, C1-4alkyl, C1-4alkoxy, phenyl or hydroxy;
• a C5-6cycloalkylamino group, the cycloalkyl group being unsubstituted or substituted by one or two C1-2alkyl groups;
• a phenylamino group, the phenyl ring being unsubstituted or substituted by one or two groups selected from halogen, C1-4alkyl, C1-4alkoxy, hydroxy and phenoxy;
• or a 5- or 6-membered ring containing one or two hetero atoms, in addition to N, O or S, which heterocyclic ring is unsubstituted or substituted by one or two C1-4alkyl groups;
• or a group Z, where Z is independently selected from the group consisting of:
• wherein
• p is 0 or an integer 1, 2 or 3,
• each R9 is independently hydrogen;
• unsubstituted C1-4alkyl or C1-4alkyl monosubstituted by hydroxy, halogen, cyano or C1-4alkoxy,
• each R2 and R3 is independently hydrogen;
• unsubstituted C1-6alkyl;
• C2-6alkyl monosubstituted by hydroxy, amino or cyano;
• phenyl or phenyl-C1-4alkyl, where the phenyl ring of the latter two groups is unsubstituted or substituted by one to three groups selected from chlorine, C1-4alkyl, C1-4alkoxy, unsubstituted C5-6cycloalkyl or C5-6cycloalkyl substituted by one to three C1-4alkyd groups or a pyridinium ring, or
• R2 and R3 together with the nitrogen atom to which they are attached, form a 5- or 6-membered ring containing one to three hetero atoms (in addition to N, one or two further N, O or S), which heterocyclic ring is unsubstituted or substituted by one or two C1-4alkyl groups,
• each R4 and R5 has independently one of significances of R2 and R3, except hydrogen,
• R6 is C1-4alkyd or benzyl with the exception that R6 is not benzyl when R4 and R5 have one of the cyclic significations of R2 and R3, or
• R4, R5 and R6 together with the nitrogen atom to which they are attached, form a pyridinium ring which is unsubstituted or substituted by one or two methyl groups,
• Q1 is C2-8alkylene;
• C3-6alkylene substituted by one or two hydroxy groups;
• C1-6alkylene-1,3- or 1,4-phenylene, or —*NHCOCH2, where * denotes the atom bound to —NR9,
• Q2 is C2-8alkylene;
• C3-6alkylene substituted by one or two hydroxy groups;
• C1-6alkylene-1,3- or -1,4-phenylene or 1,3- or 1,4-phenylene,
• Q3 is C2-8alkylene,
• R7 is hydrogen;
• unsubstituted C1-6alkyl or C1-6alkyl monosubstituted by hydroxy, cyano, chlorine or phenyl,
• R8 is unsubstituted C1-6alkyl or C1-6alkyl monosubstituted by hydroxy, cyano or chlorine, and Anθ is a non-chromophoric anion,
• Y is direct bond, —CO— or —CO—NH—*, wherein the asterisk signifies the bond to the benzene ring and
• o is 0 or 1 or
• CC is a moiety of formula (b)
• wherein
• D is a basic group —NR1-Q4-NR2R3 or a cationic group —NR1-Q4-N+R4R5R6, in which R1, R2, R3, R4, R5 and R6 have the same meanings as above and
• Q4 is C2-6alkylene, which may be interrupted by —O—, —S— or —N(R1)—;
• C2-3alkylene substituted by one or two hydroxy groups;
• or —*NHCOCH2—, where * denotes the atom bound to the —NR1-radical,
• or CC is a moiety of formula (c1) or (c2)
• wherein
• each R10 independently of each other is H;
• C1-4alkyl;
• C5-6cycloalkyl;
• phenyl, benzyl or phenylethyl,
• each R10′ independently of each other is H;
• —OH or C1-4alkyl
• each T1 independently of each other is H;
• —CN;
• —COOR15;
• CONR16R17;
• SO2NR16R17;
• G is H;
• —R11NHR12 or —R11NR13R14, wherein
• R11 is C1-6alkylene or C2-6alkenylene,
• R12 and R13 independently of each other are H;
• unsubstituted C1-6alkyl;
• C2-6alkyl substituted by OH, CN or halogen;
• phenyl-C1-3 alkyl, wherein the phenyl radical is optionally substituted from 1 to 3 times, by a substituent selected from the group consisting of;
• chlorine, C1-4alkyl or C1-4alkoxy;
• unsubstituted C5-6cycloalkyl and C5-6cycloalkyl substituted from 1 to 3 times by C1-4alkyl groups,
• R14 is any of the meanings of R12 or R13 or hydrogen,
• R15 is a C1-6alkyl radical or phenyl-C1-3alkyl radical,
• R16 and R17 independently of each other are H or a C1-4alkyl radical,
• R18 independently of each other signifies H;
• a C1-4alkyl radical;
• —NR16R17—(CH2)2-4—NR16R17 or —CONR16R17,
• R19 is a C1-4alkyl radical or a hydroxy-C1-4alkyl radical,
• R20 is —S— or —O—,
• R21 is hydrogen or a C1-4alkyl radical and
• An− is a non-chromophoric anion,
• with the provisos that
• (i) the sum of n′, n″ and m is smaller as or equal to the valencies of B,
• (ii) when the sum of n′ and n″=2 then m is ≧1,
• (iii) when the sum of n′ and n″=3 and A=NH then m is ≧1
• and their salts and mixtures thereof.