Dyeing fine denier polypropylene fibers with pheny

Authors: Zhihua Cui Jinzong Yang Weiguo Chen Shufen Zhang

Publish Date: 2009/12/04

Volume: 4, Issue: 3, Pages: 328-335

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Abstract

A series of phenylazoβnaphtholcontaining sulfonamide disperse dyes were prepared from CI Acid Orange 7 by successive reactions of chlorination and amination and their chemical structures were characterized by FTIR 1H NMR and mass spectrometry The dyes were applied to coloring of knitted fabrics from fine denier polypropylene fibers by exhaust dyeing and their optimal dyeing conditions such as dyebath pH dyeing temperature dyeing time and dye concentration were investigated in detail Then dye exhaustion color strength and color fastnesses of the dyes on the fibers were assessed and summarized In view of dye exhaustion and color strength of the sulfonamide dyes on fine denier PP fabrics 90°C was selected as the best dyeing temperature at dye concentration below or equal to 30 owf For achieving higher color strength 130°C was the better choice when the dye concentration was above 30 owf The sulfonamide dyes especially secondary sulfonamide dyes exhibited superior dye exhaustion and color fastnesses to washing sublimation and rubbing on fine denier PP fabrics in comparison to CI Solvent Yellow 14 bearing the same chromophore but without sulfonamide group

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