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Monoazo, disazo or polyazo dye used for dyeing and printing cotton wool is prepared by reacting a trichlorotriazine with cyanamide and then an amine. Preferred Definitions: Monoazo, disazo or polyazo dye of formula (I) is new: F = monoazo, disazo or polyazo dyre residue, a heavy metal azo dye complex derived from these, or an anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthene, nitroaryl, naphthaquinone, pyrequinone or perylene tetracarbimide dye; Rx = H or 1-4C alkyl optionally substituted by halogen, OH, CN, 1-4C alkoxy, 2-5C alkoxycarbonyl, carboxy, sulfamoyl, sulfo sulfato, preferably (m)ethyl, especially; n = 2 or preferably 1; Q = -(N(Rz)a)-(W)b; Rz = H or 1-4C alkyl optionally substituted by halogen, OH, CN, 1-4C alkoxy, carboxy, sulfamoyl, sulfo sulfato, phenyl optionally substituted by halogen, 1-4C alkoxy or alkyl or sulfo, a cyclohexyl, or phenyl optionally substituted halogen, 1-4C alkoxy or alkyl or sulfo; W = alkyl-SO2Y or alkyl-Het-alkyl-SO2Y; alkyl = 1-4C alkyl; Het = O, NH, N(alkyl), S or SO2; Y = vinyl or ethyl in the beta position or an alkali eliminatable substituent where SO2Y can b e bonded to F or V via a 1-4C alkenyl or alkylamino or directly; a = 0 or 1; b = 1 or 2; a+b = 2; V = direct bond or an alkenyl or optionally substituted arylene, or an alkylene-arylene, arylene-alkylene, alkylene-arylene-alkylene or arylene-alkylene-arylene group, or an arylene-arylene-alkylene group optionally substituted by a neighboring heteroatom, where alkylene has 1-8C and is optionally substituted by NH, NR (R = 1-4C alkyl), sulfo, carboxy, phenyl sulfophenyl and can be interrupted by O, S, SO2, CO,SO2NH, NHSO2, NHCO or CONH, and arylene is optionally substituted phenylene or naphthylene; y = 0, 1 or 2; z = 1 or 2; and h = N when y = 2 or when y = 1 it is NH, NR, NHCONH, NHCO, CONH or a direct bond. Independent claims are included for: (1) dyeing and printing of cotton wool using the above dye; and (2) preparation of the dye by reacting a trichlorotriazine with cyanamide and then with an amine of formula H(W)b.