Synthesis of Disperse Dyes from Pyridone and Resorcinol Coupled to Diazotized 2-Amino-4-chloro-5-formylthiazole and Application to Polyester

Table 3

Wash, light, and perspiration fastness of dyes on polyester.

Dye	Fastness to wash		Fastness to light	Fastness to perspiration
	CSH	STN		ACID		ALKALI
				CSH	STN	CSH	STN
Dye 1	5	5	5	4	4	4	3-4
Dye 2	4	4-5	3	2	2	2	2-3

CSH: change in shade; STN: stain.