POLYMERIZABLE DYES .2.

Arylene bisazo resorcinol dyes IIIa-e were prepared and polycondensed with formaldehyde in the presence of aqueous oxalic acid. The resultin g polymeric dyes IVa-e were characterized by yield, melting point, col our, elemental analysis and visible and IR spectroscopy. The thermal p roperties of polymeric dyes were examined by thermogravimetric analysi s. Their dyeing performance on nylon and polyester was assessed. The d yeing on nylon and polyester had yellow, orange, red and brown shades with moderate to good, light and wash fastness. Polymerization of bisa zo dyes IIIa-e with formaldehyde on dyed nylon and polyester have also been carried out. The dyeing properties of polymeric dyes were compar ed with the dyes polymerized on nylon and polyester.