印花用高固色率活性染料的制备及应用性能

Preparation and application properties of reactive dyes with high fixation for printing

分别以4-β-羟乙砜基硫酸酯苯胺、2-氨基苯甲醚-4-β-羟乙基砜基硫酸酯、2-氨基-4-甲基-5-(β-羟乙砜基硫酸酯)苯甲醚、2,5-二甲氧基-4-(β-羟乙砜基硫酸酯)苯胺为重氮组分,2,4-二氨基苯磺酸为偶合组分,通过重氮化-偶合反应制备了4只活性染料(BRD-1~BRD-4),并用于棉织物印花。结果表明,4只活性染料在棉织物上的印花固色率高达90%左右,且具有较好的印花工艺适应性。印花棉织物的各项色牢度性能优异,变色和沾色牢度都能达到4~5级,耐干/湿摩擦色牢度分别为4~5级和4级,耐日晒色牢度3级以上。

Using 4-β-hydroxyethyl sulfonate aniline,2-[(3-amino-4-methoxyphenyl)sulphonyl]ethyl hydrogen sulphate,2-[(4-amino-5-methoxy-2-methylphenyl)sulphonyl]hydrogen sulphate ester or 2-[(4-amino-2,5-dimethoxyphenyl)sulphonyl]ethyl hydrogen sulphate as a diazo component,and 2,4-diaminobenzenesulfonic acid as a coupling component,four reactive dyes(BRD-1~BRD-4)are prepared by diazotization-coupling reac⁃tion.These dyes are used in the printing of cotton fabric.The results show that the fixation yields of the four re⁃active dyes on cotton fabric are as high as 90%.The color fastness of cotton fabrics printed with the four reac⁃tive dyes are excellent.The color fastnesses to color change and staining can reach Grade 4-5.The dry/wet rub fastness of the dyed cotton can reach Grade 4-5 and 4,respectively,and the light fastness is over Grade 3.