The development of a urea substitute with little nitrogen has become a hot research topic for cleaner production in reactive printing. In the current study, a mixture made from glycerol and 1,4-butanediol (1:1, w/w), namely, urea substitute glycerol butanediol (USGB), was used instead of urea in the printing paste formulation. USGB’s abilities of moisture adsorption, swelling fibres and solubilisation to reactive dyes were compared with those of urea. The printing properties of USGB on different fabrics with reactive dyes were intensively investigated in comparison with urea and commercial 391-H. The results showed that USGB’s ability to swell viscose fibres was superior to that of urea. When the dosage of USGB was within 8-10 wt% in the printing paste, the colour yield of USGB on viscose fabrics drew near to that of urea and was higher than that of 391-H. During viscose printing of reactive blue dyes with different shades and structures, the colour performance of USGB was close to that of urea and higher than that of 391-H. Furthermore, USGB could obtain good printing effects in deep printing with Reactive Turquoise K-GL on different fabrics. Compared with urea, the content of ammonia-nitrogen and total nitrogen in the printing wastewater using USGB were greatly reduced, which is of huge significance for lowering ammonia-nitrogen emissions in the printing industry.

中文翻译：

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一种新型无氮助剂替代尿素的性能及其在活性印刷中的应用

开发含氮量少的尿素替代品已成为活性印刷清洁生产的研究热点。在目前的研究中，使用由甘油和 1,4-丁二醇 (1:1, w/w) 制成的混合物，即尿素替代甘油丁二醇 (USGB) 代替了印花浆料配方中的尿素。USGB 的吸湿、溶胀纤维和对活性染料的增溶能力与尿素进行了比较。与尿素和商业 391-H 相比，USGB 在不同织物上的活性染料印花性能进行了深入研究。结果表明，USGB对粘胶纤维的溶胀能力优于尿素。当USGB在印花浆料中的用量在8-10wt%之间时，USGB在粘胶织物上的得色率接近于尿素，高于391-H。在对不同色度和结构的活性蓝染料进行粘胶印花时，USGB的显色性能接近于尿素，高于391-H。此外，USGB 可以在不同织物上使用 Reactive Turquoise K-GL 进行深度印花，获得良好的印花效果。与尿素相比，使用USGB的印刷废水中氨氮和总氮含量大大降低，这对于降低印刷行业氨氮排放具有重要意义。USGB在不同织物上使用Reactive Turquoise K-GL进行深度印花可以获得良好的印花效果。与尿素相比，使用USGB的印刷废水中氨氮和总氮含量大大降低，这对于降低印刷行业氨氮排放具有重要意义。USGB在不同织物上使用Reactive Turquoise K-GL进行深度印花可以获得良好的印花效果。与尿素相比，使用USGB的印刷废水中氨氮和总氮含量大大降低，这对于降低印刷行业氨氮排放具有重要意义。