含硫代硫酸根的改性染料的制取和应用

Preparation and Application of Modified Dye with Thiolsulfate Group

阴离子染料与环氧化季铵化合物离子对化后,再引入硫代硫酸根制得了含硫代硫酸根的改性染料。改性后的染料具有良好的水溶性,但当打印到纸上,暴露于空气中,染料转变成为水不溶性形式,提高了打印品的耐水牢度。

Modified dyes containing thiolsulfate group are prepared by the reaction between ion - paired dye with epoxidised quaternary ammonium derevative and sodium thiolsulfate. The modified dyes showed an excellent water solubility. But on printed paper, the modified dyes converted to water insoluble disulfide form exhibited a good water fastness.