基于α-苯基重氮酯的卡宾型染料的合成及其对氨纶的染色性能

Synthesis of carbene-type dyes based onα-phenyl diazoester moiety and their dyeing property on spandex

为提升分散染料染色氨纶的色牢度,在偶氮染料结构中引入α-苯基重氮酯结构,合成3支新型卡宾型染料,用该类染料对氨纶进行染色,并测试了上染率、色深、固色率和色牢度等性能参数。结果表明:3支卡宾型染料通过高温处理即可牢固结合在纤维上,在无外界环境干扰情况下,染色氨纶最高固色率可达80.7%~96.3%;优化的水相染色法工艺条件为在95℃染色45 min,再在130℃固色30 min,在该条件下,所得染色氨纶的固色率能达到50.6%~80.7%,耐皂洗、耐摩擦和耐升华色牢度可达4级及以上,颜色迁移率为6.2%~8.9%。采用卡宾型染料对氨纶进行的反应性染色研究结果为完善氨纶的高色牢度染色技术提供了有益参考。

To improve the color fastness of spandex dyed with disperse dye,three new carbene-type dyes were synthesized through the introduction of anα-phenyl diazo ester structure into the azo chromophore.These dyes were applied to the dyeing of spandex.The dyeing properties,such as dye uptake,color depth,fixation value and color fastness were tested.The results show that these dyes can be firmly combined to the fiber under high temperature treatment.If there is no external interference,the highest fixation values of dyed spandex can reach 80.7%-96.3%.The optimized condition for water-based dyeing is dyeing at 95℃for 45 min and then fixing at 130℃for 30 min.Under this condition,the fixation values of dyed spandex can also reach 50.6%-80.7%,the soaping,rubbing and sublimation fastnesses can reach level 4 or above,while the color migration values are only 6.2%-8.9%.The reactive dyeing of spandex in this study based on the designed carbene-type dyes provides useful reference for improving the high-color-fastness dyeing technology of spandex.