代用碱JT在活性冷轧堆染色中的应用

采用活性染料对纯棉织物进行冷轧堆染色,探讨自制代用碱JT、尿素、食盐用量和堆置时间对染色织物K/S值的影响,并测试了染色织物的色牢度。代用碱活性染料冷堆法染色的优化工艺为:代用碱1.5 g/L,尿素10 g/L,食盐20 g/L,堆置时间8 h;代用碱JT染色织物的色光、耐摩擦色牢度与纯碱染色织物相近。

Application of substitute alkali JT in cold pad-batch reactive dyeing

Reactive cold pad batch dyeing is carried out on cotton fabric with substitute alkali JT. The influences of dwelling time and dosages of alkali, urea and salt on the K/S value of cotton dyeings are discussed, and the color fastness is tested. The optimum cold pad batch dyeing process is obtained as follows: substitute alkali JT 1.5 g/L, urea 10 g/L, sodium chloride 20 g/L, and dwelling for 8 h. The cotton dyeings with substitute alkali JT feature the same K/S value and color fastness as those with soda ash.