A series of monochloro‐s‐triazinyl (MCT) and related m‐carboxypyridinium‐s‐triazinyl (nicotinic acid [NTR]) reactive dyes based on the same red chromophore and bearing –NHCN, –OCH₃, –N(CH₃)SO₂CH₃, –N‐methylphenyl and –OH “second‐leg” substituents were evaluated in cold pad‐batch dyeing. It was found that both the MCT and NTR dyes containing a cyanoamino second‐leg substituent displayed a superior technical performance to the dyes bearing methoxy, N‐methyl(methylsulphonyl)amino, hydroxyl and N‐methylaniline substituents. The results suggest that these technical benefits of dyeing are derived from the smaller molecule size and electronic effect of the cyanoamino group compared with the other second‐leg substituents commonly used in both MCT and NTR reactive dye synthesis. Indeed, the use of the cyanoamino second leg on the studied red NTR reactive dyes offered a combination of short batch time, high fixation efficiency, good build‐up properties and good wet fastness properties.

中文翻译：

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单氯-s-三嗪基和间羧基吡啶鎓-s-三嗪基带有各种“第二腿” N-取代基的活性染料的冷轧批量应用研究

一系列单氯的小号-triazinyl（MCT）和相关米-carboxypyridinium-小号-triazinyl（烟酸[NTR]）基于相同的发色团的红色和轴承活性染料-NHCN，-OCH ₃，-N（CH ₃）在冷轧分批染色中评估了SO ₂ CH ₃，– N-甲基苯基和–OH“第二条腿”取代基。发现含有氰基氨基第二腿取代基的MCT和NTR染料均比带有甲氧基，N-甲基（甲基磺酰基）氨基，羟基和N的染料表现出优异的技术性能。-甲基苯胺取代基。结果表明，与MCT和NTR反应性染料合成中通常使用的其他第二腿取代基相比，氰基氨基基团的较小分子大小和电子效应可带来染色的这些技术优势。确实，在研究的红色NTR活性染料上使用氰基氨基第二腿提供了短批处理时间，高固着效率，良好的增色性和良好的湿牢度特性的组合。