Use | Direct deep brown NM is suitable for dyeing cotton, viscose fiber, red light brown. The dye uptake was good and the dye migration was poor. More used for cotton knitted dyeing. Also used for dyeing silk, nylon, Vinylon and for cotton, viscose fiber fabric direct printing. used for dyeing cotton, rayon, silk, viscose and other fabrics |
production method | with 4,4 '-diaminobenzoylaniline, salicylic acid and gamma acid as raw materials, firstly 4, the 4'-diaminobenzoylaniline is double-nitrided, coupled with salicylic acid and a second coupling with gamma acid to give the product. After salting out, filtration, drying, grinding to get the finished product.. |