共查询到20条相似文献,搜索用时 78 毫秒
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活性染料问世已逾40年,国内外得到很大发展。本文综述活性染料发展现状,特别对新的活性基和母体作了详细论述,并述及低盐型和新剂型的活性染料的开发。 相似文献
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染色用活性染料近年进展 总被引:4,自引:1,他引:4
该本概述了当前吸尽染色工艺用的活性染料的发展的趋势;1.适应低温染色的要求,降低加工成本和染色时间;2.降低中性盐的耗用量,减轻染色操作的劳动强度,减少含盐废水的排放;3.发展具有合适的一次吸尽率的新型活性染料,提高染色生产效率;4.开发可缩短染色时间的新型染色用活性染料;5.发展高染色坚牢度的染色用活性染料。 相似文献
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活性染料是一类有发展前途的重要棉用染料。本文从当前环境和生态保护要求出发阐述了现代活性染料的技术进展,包括现代活性染料的结构、品种以及适应新纤维与新染色技术要求的活性染料等各方面的发展,对现代活性染料的品种结构调整和技术创新具有重要的参考价值。 相似文献
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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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