Dyeing Polyester, Cotton and Wool with Some Schiff Bases Derived from 4-chloroaminophenol and Various Benzaldehydes

Abstract

Dyeability of ten Schiff bases obtained from 4-chloroaminophenol and various benzaldehydesincluding methyl, chloro, bromo, nitro, methoxy, and hydroxy groups were investigated on polyester, cottonand wool fibers. The dry/wet rubbing and washing fastness of the compounds were measured. It isobserved that the rubbing and washing fastness values are varying at the 4 – 5 range (1: weak, 5:excellent). The lightness (L), red-greenness (a), and yellow-blueness (b) properties of the compounds werealso investigated. It was observed that the dyeing properties of the compounds change depending on thesubstituent positions, and the substituent effect is observed on wool mostly. Especially, 3- and 5-methylderivatives (VIII and IX) exhibit similar behavior toward polyester and cotton while they behave differentlyon wool in point of the L, a, and b values. On the other hand, it can be claimed that chlorine substituentincreases the L value on wool.