Abstract

2-amino-thiophene and coupling with R, H, J, and ɣ acid. Spectroscopic studies characterized the dyes. The dyeing capabilities were assessed by applying them on chrome-tanned leather and nylon 6,6 substrates. The dyes produced shades of red, dark blue, and dark maroon. The synthesized dyes gave a maximum absorption within the UV-visible region with λmax515-597 nm and molar extinction coefficient ranging from (3.217-4.221 x 104 l/mol-1 cm-1). The chrome-tanned leather gave a wash fastness rating ranging from 3(good), 4(very good) to 5(excellent), respectively. Nylon 6,6 gave a wash fastness rating ranging from 4(very good) to 5(excellent) fastness properties, and the light fastness properties of chrome-tanned leather gave a fastness rating of 4(moderate), 5(good), 6(very good) and 7 (excellent) and rubbing fastness rating 4(very good) to 5(excellent) on both substrates.