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Recent developments in azo reactive dyes for wool

机译：羊毛偶氮活性染料的最新进展

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Textile colorants may conveniently be classified into two groups according to how the dyed fibre performs in response to exterior agencies such as subsequent washing. With the dyes of the first group which include acid dyes, basic dyes, direct dyes and disperse dyes, the coloration process is reversible under the conditions to which the colored material may be exposed during its lifetime. In second, the coloration process is reversible under the conditions normally encountered in use, this group includes sulphur dyes, vat dyes, mordant dyes, ingrain dyes, oxidation dyes, reactive dyes and resin bonded pigments. The reactive dyes are unique among other dyes in that they are covalently bonded to substrate, that is the dye and the fibre substrate form a bond of shared electrons. The energy required to split this bond is of the same order as that required to split carbon-carbon bonds in the substrate itself - hence the high degree of wet-fastness observed with these dyes.
机译：根据染色的纤维响应于诸如随后的洗涤之类的外部作用如何表现，可以方便地将纺织品着色剂分为两类。对于第一类染料，包括酸性染料，碱性染料，直接染料和分散染料，在有色材料在其寿命期间可能暴露于的条件下，着色过程是可逆的。其次，在通常使用的条件下，着色过程是可逆的，该组包括硫染料，还原染料，媒染染料，根系染料，氧化染料，活性染料和树脂结合的颜料。反应性染料在其他染料中是独特的，因为它们与底物共价键合，也就是说，染料和纤维底物形成共享电子的键。拆分该键所需的能量与拆分基质本身中的碳-碳键所需的能量相同，因此在这些染料中观察到了很高的湿牢度。

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