Light fastness of anthraquinone dyes was affected by many factors and it was mainly determined by dye structures,such as the kinds and position of substituent groups,dipole moment of the molecule.

• 影响蒽醌染料日晒牢度的因素有很多,主要取决于染料的分子结构,与分子中取代基的种类和位置、分子的偶极距等有关。