Cationic dyeable copolyester polymer and yarns made therefrom having as an integral part of the polymer chain, sulfonamide groups each containing a dye sensitizing unit, derived from alkaline earth or alkali metal salts of sulfonated sulfonamides such as the sodium salt of N-(.beta.-hydroxyethyl)-N-(3-carbomethoxybenzenesulfonyl) taurine.
阳离子染料可染共聚酯聚合物和由此制成的纱线,其聚合物链中具有磺酰胺基团,每个基团含有一种
染料敏化单元,该单元源自碱土
金属或碱
金属磺化磺酰胺盐,例如N-(β-羟乙基)-N-(3-羧
甲氧基苯磺酰基)
牛磺酸的钠盐。