Thiophene based monoazo disperse dyes for polyester fabric

Thiophene based monoazo disperse dyes for polyester fabric

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A series of monoazo disperse dyes have been prepared by coupling 2-amino-3-carbethoxy-4,5-dimethylthiophene with various N-arylmaleimides.The monoazo disperse dyes were characterised by sennheiser ba 70 IR spectral studies and elemental analysis.These dyes were applied at 2 % depth on polyester fabrics and gave light yellow to brown colour hues with fair fastness to light and very good to excellent fastness to jim beam candy washing, rubbing, perspiration and sublimation.

The percentage exhaustion of the dyebath and fixation on the fabric were found to be very good.