The new series of super hydrophobic disperse dyes having different length of alkyl substituents was synthesized to dye pure polypropylene fibers. From butyl to dodecyl groups were introduced to an anthraquinoid chromophore. The adsorption interaction of the dyes toward the polypropylene fiber was increased with the increase of the length of alkyl chains due to enhancement of hydrophobicity of the dyes. The optimum alkyl group was determined as the longest dodecyl group in this study. Their absorption spectra in the visible range appeared almost the same regardless of the length of alkyl groups, which meant that the length of alkyl groups did not influence on optical properties of the dyes relating to color appearances. The color fastnesses of the dyed fabrics to washing, rubbing, and light were good enough for practical application.

合成了具有不同烷基取代基长度的新系列超疏水分散染料，以染色纯聚丙烯纤维。从丁基到十二烷基被引入蒽醌类生色团。染料对聚丙烯纤维的吸附相互作用随着烷基链长度的增加而增加，这归因于染料疏水性的增强。在该研究中，最佳烷基被确定为最长的十二烷基。无论烷基的长度如何，它们在可见光范围内的吸收光谱看起来几乎相同，这意味着烷基的长度不影响与颜色外观有关的染料的光学性能。染色织物的耐洗，耐擦和耐光色牢度足以满足实际应用。