(A) a basic polycondensate and (b) a compound represented by the formula (2) P-X-YA +AnA-With an electrophilic dye, wherein the basic polycondensate (a) is a polymeric dye obtained by reacting (a1) Ammonium salt, in the presence of an anhydrous solvent, with an amine of formula (I)2) Cyanamide, wherein R1, R2, R3And R4Independently of one another, hydrogen or amino, hydroxy, cyano or C1-C4C optionally substituted by alkoxy1-C4Alkyl A is C, which may be substituted or interrupted by one or more heteroatoms,2-C20Alkylene P is a reactive group capable of reacting with a nitrogen nucleophile X is one or more-O-,-S-,-N,-N (R5)-,-S (O)-, SO2,-(CH2CH2-O)1-5-,-(CH2CH2CH2-O)1-5-,-C (O)-,-C (O) O-,-OC (O)-, formula (II)5)-,-C (NR5R6)2-,-(R5) NC (O)-,-C (S) R5-or interrupted and / or interrupted by an optionally substituted, saturated or unsaturated, condensed or unfused, aromatic or non-aromatic (hetero) cyclic divalent group which may have at least one heteroatom, Or may end at one or both ends C1-C30Alkylene, C2-C12Alkenylene, C5-C10Arylene, C5-C10Cycloalkylene and C1-C10Alkylene (C5-C10Arylene)-O--S--N (R5)--S (O)--SO2--(CH2CH2-O)1-5-C (O)-,--C (O)-,-C (O)-, formula5)--SO2N5)--C (NR5R6)2--(R5) NC (O)--C (S) R5- C1-C30Alkyl, C1-C30Alkoxy, C2-C12Alkenyl, C5-C10Aryl, C5-C10Cycloalkyl, C1-C10Alkyl (C5-C10Arylene), a saturated or unsaturated, fused or unfused aromatic or non-aromatic divalent group which may have at least one hetero atom which may be substituted by halogen or hydroxy or a direct or non-Linkage Y is a residue of an organic dye R5And R6Are independently of each other hydrogen, unsubstituted or substituted straight or branched monocyclic or polycyclic interrupted or uninterrupted d-C14Alkyl C2-C14Alkenyl C6-C10Aryl C6-C10Aryl-C1-C10Alkyl or C5-C10Alkyl (C5-C10Aryl) a is 1, 2 or 3 An is an anion. ] Is disclosed. The dye is distinguished by the depth of the shade and the good fastness to washing such as fastness to light, shampoo fastness and friction to rubbing. Se
