Synthesis of Malononitrile-Condensed Disperse Dyes and Application on Polyester and Nylon Fabrics

Table 1

Yield, colour, molecular weight and melting points of dyes derived from Diazo component.

Dye	Coupling component	Weight of Dye	% yield	Colour of crystals	Mol. wt (g)	Melting point; (°C)
	D1							1.969	65	Coffee-brown	303	205–207
D2		2.288	75	Yellow	309	222
D3		2.022	63	Light-orange	321	128–130
D4		2.183	68	Dark-red	321	110–112
Diazo Component

: the coupling component.