共查询到19条相似文献,搜索用时 78 毫秒
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现代活性染料与分散染料的发展 总被引:6,自引:0,他引:6
近年分散染料与活性染料的发展因受相应纤维大幅增长的关联,产量和品种开发均列第一、二位.本文就这二类染料进行详细评述.近十年活性染料的新发色母体和活性基没有新的突破性进展,引入取代基改善染色性能的结构修饰和商品化技术成为活性染料发展重点.分散染料则以开发杂环型分散染料为重点.本文所列染料分子结构均为近年开发的品种,许多是鲜为人知的. 相似文献
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回顾国产活性染料50年的发展,充分说明要持续发展必须坚持技术创新,转变经济增长方式,突出技术创新,提高资源的利用率,满足节能减排,生态安全指标符合国内外法律法规要求.提高国产活性染料的产品性能和附加价值,实现活性染料生产的可持续发展. 相似文献
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本文综述了溴代丙烯酰胺基活性染料与羊毛的反应机理,简要介绍了Lanasol染料的应用性能和近年Ciba公司推出的Lanasol CE型系列染料。 相似文献
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Reactive dyes containing a sulphonylazide group can undergo fixation on nylon substrates by two different mechanisms. Under aqueous dyeing conditions, at or below 120d? C, the free amino end-groups of the polymer attack the sulphonylazide group with displacement of azide ion, and results in attachment of the dye to the substrate by a sulphonamide linkage. In contrast, if the dyed substrate is subjected to dry heat fixation at 170d? C, the azide group decomposes to a sulphonylnitrene species which undergoes insertion into C-H bonds of the polymer. The dye is again attached by a sulphonamide bridge, but in this case the amount of dye that can be fixed is independent of the amino end-group content of the polymer. 相似文献
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Dyes containing azido substituents have been examined as latent reactive dyes for wool and nylon. Three different substituents, viz. azidophenyl, azidosulphonyl and diazidotriazinyl, were used. It was found that dyes containing azidophenyl groups could be applied under conditions where little reaction with the fibre occurred. These dyes could then be induced to react covalently with the fibre either by irradiation with light or by ironing at 200d?C. However, the binding of the dye to the fibre occurs in rather low yield (30–40%) and, in some cases, is accompanied by a marked colour change. Dyes containing azidosulphonyl or diazidotriazinyl substituents react with wool and nylon during application, and they are therefore unsuitable as latent reactive dyes. 相似文献
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