| Use | the orange-based GR is suitable for dyeing cotton, viscose fiber and silk, and is also used for cotton printing. With the chromophenol as coupling Red Orange, coupling ability, coupling speed is fast. Can be coupled with a variety of phenol, respectively, yellow red, red, red and other colors. On the colored phenol as or AS-D base cotton cloth, the orange base GR color paste can be printed with the reactive dye, and there is no change in color after steaming. |
| production method | O-nitrochlorobenzene is used as raw material, and the product is obtained by ammoniation. The final product was obtained by filtration and drying.. Add O-nitrochlorobenzene 450kg, 27% ammonia water 2280L in the autoclave, raise the temperature to 155 ℃ in about 2H, stop heating, the reaction heat can make the temperature rise to 180 ℃, the pressure is about 36-38pa, final up to 185-188 °c, 38-40PA, maintained for 5H, naturally cooled to 60 °c, discharge. It was cooled to 30 °c, washed three times with water, filtered, and the filter cake was dried at 50-60 °c for 48h to give about 390kg of dry powder with a purity of 99%. |
