direct dyes

同根派生

Pay attention on azo free problem on direct dye, some of the direct dye used are still not Azo free.
请注意在直接染色中的要求不含氮的问题,有些在使用的直接染色仍然是含氮的。
It is used in the manufacturing of the fluorescent brightening agent, the direct dyes, the reactive dyes and the moth repellant, etc.
用途:用于制造荧光增白剂,直接染料、活性染料和防蛀虫剂。
The eco-friendly formaldehyde-free fixing agent using diethylenetriamine and dicyandiamide is synthesized and applied to fixation experiment of direct dyes.
以二乙烯三胺和双氰胺为主要原料合成了一种符合环保要求的无甲醛固色剂,应用到直接染料的固色实验中。
Mixing direct dye pansy with blue,fishing out the optimal technology of mixing colors. Guiding production and increasing the brightness of paper.
采用直接染料紫罗兰和蓝色混合 ,摸索最佳调色工艺 ,指导生产 ,提高纸的白度
In addition, rapid colorimetric determination of benzidine compounds released from photo-assistant reduction of selected direct dyes was also conducted.
并借助联苯胺类直接染料，通过其还原生成物氧化后的光谱测定，表征了染料还原反应生成的联苯胺。