The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates necessary for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.
本发明涉及新型黄色阴离子
染料、其制备方法、制备所必需的某些新型中间体以及利用这些
染料对天然或合成材料进行染色,特别是纸张的用途。