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首页> 外文期刊>Textile Research Journal >Low Chrome Dyeing: Eliminating Cr(Ⅵ) in the Exhausted Bath by Using Cr(Ⅲ) as the Mordant
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Low Chrome Dyeing: Eliminating Cr(Ⅵ) in the Exhausted Bath by Using Cr(Ⅲ) as the Mordant

机译：低铬染色：以Cr（Ⅲ）为媒质消除废液中的Cr（Ⅵ）

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摘要

Previous work examined the performance of sulphamic acid and rare earth in the afterchrome dyeing of wool using the dichromate process. This paper describes a dyeing method that uses a complex of Cr(Ⅲ) to afterchrome mordant dyes and so completely eliminates Cr(Ⅵ) from the effluent. 5-Sulphosalicylic acid, sodium salt (SSA) was selected as an efficient ligand for complexing with Cr(Ⅲ) to form a special chelate compound (SSA-CrⅢ). This compound is named the "complexing carrier," since it is of great value in carrying Cr(Ⅲ) into wool and transferring the Cr(Ⅲ) ion to the chrome dyestuffs already taken up by the wool to make the mordanting possible. The optimum molecular ratio of SSA to Cr(Ⅲ) in the chelate compound and the methodology for testing the pickup ratio of SSA onto wool have been established through much laboratory work. The mordanting results indicate that satisfactory hue, good color fastness, and improved handle are imparted to wool fibers when compared with the dyeing results obtained through the conventional mordanting process. After allowing for desorption of SAA during the alkali solubility test, the alkali solubility of the dyed wool after the new mordanting method is similar to that obtained after conventional afterchrome dyeing with dichromate.
机译：先前的工作检查了重铬酸盐工艺在羊毛的后铬染色中使用氨基磺酸和稀土的性能。本文介绍了一种使用Cr（Ⅲ）配合物对后染媒染剂进行染色的染色方法，以便从废水中完全去除Cr（Ⅵ）。选择5-水杨酸钠盐（SSA）作为与Cr（Ⅲ）络合形成特殊螯合物（SSA-CrⅢ）的有效配体。该化合物被称为“络合载体”，因为它在将Cr（Ⅲ）携带到羊毛中并将Cr（Ⅲ）离子转移到羊毛已经吸收的铬染料上而具有很大的价值，从而使染纱成为可能。通过大量的实验室工作，已经建立了螯合化合物中SSA与Cr（Ⅲ）的最佳分子比以及测试SSA在羊毛上的吸收率的方法。媒染结果表明，与通过常规媒染方法获得的染色结果相比，羊毛纤维具有令人满意的色相，良好的色牢度和改善的手感。在碱溶解度测试中允许SAA解吸后，新的媒染方法后的染色羊毛的碱溶解度与常规重铬酸盐复铬染色后所获得的相似。

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  • 来源
    《Textile Research Journal》 |1995年第2期|p.70-74|共5页
  • 作者

    J. XING; M. T. PAILTHORPE;

  • 作者单位

    Department of Textile Technology, The University of New South Wales, Sydney, NSW 2052, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 纺织工业、染整工业;
  • 关键词

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