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。
Polymeric colorants and corresponding ink compositions
申请人:Hewlett-Packard Development Company, L.P.
公开号:EP1650269B1
公开(公告)日:2008-10-01
Schwarze Farbstoffmischungen von faserreaktiven Azofarbstoffen und ihre Verwendung zum Färben von hydroxy- und/oder carbonamidgruppenhaltigem Fasermaterial