Four di-cyanoethyl azo disperse dyes based on N,N-bis(2-cyanoethyl)-m-methylaniline were synthesized using four different heterocyclic aromatic amines as the diazo components. They were characterized by UV-Vis IR 1HNMR MS and EA. The dyeing performance of these dyes were assessed on polyester fir powder and acetylated fir powder. On polyester the results showed that the maxinum absorption of four heterocyclic azo disperse dyes were from 414 nm to 599 nm(acetone) they were also found to show a wide range of colour shades followed as yellow bright crimson bulish violet and blue shades the dyed f...
