【摘要】 本文对１８个吡啶酮偶氮染料，在不同条件（ｐＨ值、温度、溶剂）下的吸收光谱进行了研究。讨论了染料的结构、溶剂的种类、温度等对染料变色性能的影响。探讨了脱氰基吡啶酮系偶氮染料耐酸、碱变色的原因。更多还原

【Abstract】 The absorption spectra of eighteen pyridone Azo dyes was studied in different conditions (pH value, temperature and solvent). The effect of acid - base-colour - change bythe dye structure, the kinds of solvent, the value of temperature was discussed. The reasonfor that the pyridone azo dyes which contin a 3-H group instead of a cyano group in thecoupling component show more stability in acid - base media was also discussed.更多还原