The effects of aromatic aldehydes on polyurethane fiber amines to form imines directly on the fiber were investigated using 4-dimethylaminocinnamaldehyde as an example. The effects of changing the 4-dimethylaminocinnamaldehyde concentration, dyeing time and temperature, and solution pH on the proposed technology were studied. A theoretical justification for the new dyeing method was given. Technological parameters of the dyeing process were developed. Reflectance spectra were obtained. The concentration, time, and temperature dependences of the K/S values of the samples were found. The stability of the obtained dyes on the polyurethane fibers was tested by wet treatments.

中文翻译：

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聚氨酯纤维的一步染色

以4-二甲基氨基肉桂醛为例，研究了芳香醛对聚氨酯纤维胺直接在纤维上形成亚胺的影响。研究了改变4-二甲基氨基肉桂醛浓度，染色时间和温度以及溶液pH值对所提出技术的影响。给出了新染色方法的理论依据。开发了染色过程的技术参数。获得反射光谱。发现样品的K / S值的浓度，时间和温度依赖性。通过湿处理测试所得染料在聚氨酯纤维上的稳定性。