| Name | Disperse Yellow HG |
| Synonyms | Desron Yellow S-G Serene Yellow 6GLS Disperse Yellow HG Begacron Yellow GFS Apollon Yellow S-GF Chemilene Yellow GFS C.I.Disperse Yellow 79 Kiwalon Polyester Yellow GLS |
| Molecular Formula | C16H12N4O4 |
| Physical and Chemical Properties | Chemical properties orange yellow powder. Soluble in ethanol, acetone and benzene. When dyeing, the color light of iron ion is basically unchanged, and the color light of copper ion changes slightly. The maximum absorption wavelength (λmax) is 426nm. |
| Use | Use 1, disperse Yellow HG dyeing polyester is suitable for high temperature and high pressure method, dry heat fastness is good, levelness is poor, can be dyed single color, can also be combined to dye tender green. It is mostly used for hot-melt rolling dyeing polyester cotton fabric, and can be color-matched with disperse red H5GL, Disperse Blue HBGL and disperse dark blue HGL. Also used for direct printing of polyester fabric, light to deep color are suitable. Can also be dyed two acetate fiber light to medium color, not suitable for dyeing three acetate fiber, nylon and acrylic. 2, mainly used for dyeing polyester and its blended fabrics, can also be used for dyeing acetate, nylon, and suitable for printing |
Using o-aminobenzoic acid, p-nitroaniline, dimethyl sulfate and acetic anhydride as the main raw materials, firstly, o-aminobenzoic acid and dimethyl sulfate are methylated, and then acetic anhydride is added for closed-loop reaction to generate quinolinone intermediate (I); Then, p-nitroaniline is diazotized, coupled with quinolinone (I), and filtered, ground and dried..
8.07kg of p-nitroaniline (74.25%), 3.22kg of sodium nitrite (98%), 20.8kg of hydrochloric acid (25.72%) and 70kg of water were subjected to diazotization reaction at 0-5 ℃ for 15-20min to obtain p-nitroaniline diazonium salt.
204kg of water, 6kg N-methyl -4-hydroxyquinolinone (100%), 7.35kg of sodium carbonate (100%), 4kg of sodium bicarbonate (100%) and 0.5kg of activated carbon were stirred and dissolved, and filtered. The filtrate was cooled to 10 ℃, and p-nitroaniline diazonium salt was added for coupling reaction for 2h. Filter, wash with water until neutral, add diffusion agent (NNO) to grind, and dry to obtain the finished product.