Water-insol monazo dyes - for dyeing/printing aromatic polyesters

摘要

Dyestuffs are of formula (I) (where X, Y and Z are each H, Cl, Br, CN, NO2, CF3, lower alkylsulphonyl, carbo(lower alkoxy), (lower alkyl) carbonyl or benzoyl; n m are each 1,2, or 3; the benzene ring B may also carry >=1 Cl or Br atoms or lower alkyl, lower alkoxy or acylamino radicals of formula - NHCOW, W being lower alkyl).