A one-pot synthesis for preparing an aqueous reactive black mixture includes a) dissolving 2-[(4-aminophenyl)sulfonyl]ethanesulfonic acid (vinyl sulphone parabase ester) in water; b) diazotizing the dissolved vinyl sulphone parabase ester using excess nitrous acid or using excess nitrite and an acid, resulting in a diazonium salt and remaining nitrous acid; c) quenching the remaining nitrous acid with sulfamic acid; d) coupling the diazonium salt of step c) with 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid (H-acid) until the reaction is complete, resulting in Reactive Black 5 (RB 5) and remaining diazonium salt, e) coupling the remaining diazonium salt with 7-acetamido-4-hydroxy-2-naphthalenesulfonic acid (acetyl-J-acid) until the reaction is complete resulting in Reactive Orange 78 (RO 78); and f) obtaining the aqueous reactive black mixture.
制备
水性活性黑混合物的一锅合成法包括 a) 将 2-[(4-
氨基苯基)磺酰基]
乙磺酸(
乙烯基砜
对位酯)溶于
水; b) 使用过量的
亚硝酸或过量的
亚硝酸盐和一种酸对溶解的
乙烯基砜
对位酯进行重氮化,生成重氮盐和剩余的
亚硝酸; c) 用
氨基磺酸淬灭剩余的
亚硝酸;d) 将步骤 c 中的重氮盐与
4-氨基-5-羟基-2,7-萘二磺酸(H-酸)偶联,直到反应完全,得到反应性黑 5(RB 5)和剩余的重氮盐; e) 将剩余的重氮盐与 7-乙酰
氨基-
4-羟基-
2-萘磺酸(乙酰-J-酸)偶联,直到反应完全,得到反应性橙 78(RO 78);f) 得到
水性活性黑色混合物。