నైరూప్య

Synthesis, Characterization and Applications of Some New Reactive Dyes Based on 5,5'-Methylenebis (2-Aminobenzenesulfonic Acid)

Elit A Gamit, Sejal M Patel, Suchitra S Savant, Hushen U Hajiyani, Vinay K Patel, Paresh S Patel and Keshav C Patel

Coupling of 2-chloro anilino cyanurated acids with 5,5'-methylenebis(2-sulfobenzenediazonium) chloride to give the corresponding methylene based reactive dyes in good yields. They were characterized by nitrogen elemental analysis, IR and 1H NMR spectra. The dyeing performance of synthesized dyes has been examined on silk, wool and cotton. The synthesized dyes gave moderate to good light fastness, good to excellent wash fastness and rubbing fastness.