Role of Polyethylene Glycol-Fatty Acid Condensation Products in High-Temperature High-Pressure Dyeing of Polyester Fibres

Abstract

<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:timesnewromanpsmt;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The effect of four polyethylene glycol-fatty acid condensation products on the exhaustion of a disperse dye (C.I. Disperse Orange 13) in high-temperature high-pressure dyeing of polyester fibres was investigated. The experimental planning was done using a second order response surface design technique. The addition of polyethylene glycol-fatty acid condensation products affected dye exhaustion in two different ways depending upon dyeing temperature. At lower temperature (100°C) these products accelerated dye exhaustion by increasing dye solubility. At higher temperature (130°C), these products retarded dye exhaustion by further increasing dye solubility, which tends to retain a certain amount of dye in the dyebath.</span>