The present invention relates to black active dyes and the preparation of the same, and 2,4-biaminobenzene sulfonic acid sodium, H acid, 2,3-bibromopropionyl chloride and dinitroaniline are used as the prime starting materials. Through the process of condensation reaction, diazo-reaction, coupling reaction and post treatment. When adding appropriate of red compositions or orange compositons, hight jet black active black product can be obtained, when using it can stain without adding any heave metals as the addtivites, it can replace the acid mordant black PV used for staining the cashmere and other worsted fabric, it also can be used for staining the fiber, such as cotton, silk, polyamide and so on. The method avoid the product of printing and dyeing wastewater containing heavy metal Cr6+, and promote technological progress of printing and dyeing fields.
本发明涉及黑色活性
染料及其制备方法,以
2,4-二氨基苯磺酸钠、H酸、2,
3-溴丙酰氯和
二硝基苯胺为主要起始原料。经过缩合反应、重氮反应、偶联反应和后处理等过程。当加入适量的红色组合物或橙色组合物时,可得到高喷射黑活性黑产品,使用时无需添加任何重
金属即可染色,可替代用于羊绒等精纺织物染色的酸性媒介黑 PV,也可用于棉、丝、锦纶等纤维的染色。该方法避免了印染废
水中含有重
金属 Cr6+ 的产物,促进了印染领域的技术进步。