A reactive dye composition which comprises 20 to 99% by weight of a dye represented by a free acid of formula,
and 80 to 1% by weight of an alkylnaphthalenesulfonic acid/formaldehyde condensate having a degree of sulfonation of 50 to 150% and a degree of average condensation of 1.1 to 3.0. The composition is readily soluble in water and aqueous alkali liquors, resistant to coagulation when prepared into a color paste for printing, and is useful for dyeing or printing cellulose fiber materials yellow with a high color yield, particularly by a one-bath pad dyeing method or print method.
一种活性
染料组合物,它包含 20 至 99% (以重量计)由式中
游离酸代表的
染料,以及 80 至 1% (以重量计)磺化度为 50 至 150%、平均缩合度为 1.1 至 3.0 的烷基
萘磺酸/
甲醛缩合物。 该组合物易溶于
水和
水性碱液,在配制成印花用色浆时不易凝固,可用于对黄色
纤维素纤维材料进行染色或印花,且得色率高,尤其适用于一浴式轧染法或印花法。