Abstract
Various 4-Arylazo-1,3-benzenediamine (AABs) dyes have been synthesized and polycondensed with Toluene 2,4-diisocyanate (TDI). The resultant polyureas (PUs) have been characterized by elemental analysis, IR spectroscopy and number average molecular weight (), estimated by non-aqueous conductometric titration. Thermal properties of PUs have been examined. Their dyeing performance on nylon and polyester gives yellow to orange shades with moderate to good light and wash fastness. Polymerization of AABs with TDI on dyed nylon and polyester has also been performed. The dyeing properties of simple AAB dyes were compared with the dyes polymerized on nylon and polyester.
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