Syntheses and dyeing properties of novel water-soluble reactive sulphur black dyes
Syntheses and dyeing properties of novel water-soluble reactive sulphur black dyes
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DOI：
10.1111/cote.12707
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Shufen Zhang
中科院分区：
文献类型：
--
作者：
Zhengyang Gao;Wei Ma;Bingtao Tang;Shufen Zhang
The practical application of a sulphur black dye relies on its ability to dye.cotton fibres with pure black colour and maintain the colour with high light.fastness. Here, we report a synthesis method to prepare a novel water-soluble.reactive sulphur black dye. The approach involves the reduction of CI Sulphur.Black 1 to its leuco form and subsequent reaction with a water-soluble intermediate.containing reactive groups synthesised from amino acid and cyanuric.chloride. The optimal carboxyl and reactive group content of the water-soluble.reactive sulphur black dye is 141 mmol/100 g, and the water solubility can.reach 92 g/L. The fixation of the reactive sulphur black dye on cotton reaches.89% in a pad dyeing process without using sodium sulphate. The reactive.sulphur black dye can achieve a light fastness of grade 6-7, a dry rub fastness.of grade 4 and a wet rub fastness of grade 2, comparable or higher than the.conventional CI Sulphur Black 1. The dyeing results showed that the novel.water-soluble reactive sulphur black dye has excellent performance and good.application prospects.
