Gray dye, dye composition and application of gray dye

The invention discloses a gray dye, a dye composition and application of the gray dye. The gray dye provided by the invention is prepared from the following components: 80 to 96 percent of a dye monomer A as shown in formula (1), 2 to 9 percent of a dye monomer B as shown in formula (2) and 2 to 11 percent of a dye monomer C as shown in formula (3), wherein the percentage is mass percentage of the dye composition; the total percentage of the dye composition is 100 percent; R1 and R2 are independently H or SO3Na, and are different. The dye prepared from the dye composition is a composite gray dye which is excellent in dye process stability, high in color fastness, high in leveling property and washable. 本发明公开了种灰色染料、染料组合物及其应用。本发明提供了种染料组合物，其包含以下组分：80％～96％如式(1)所示的染料单体A、2％～9％如式(2)所示的染料单体B和2％～11％如式(3)所示的染料单体C；所述百分比为占所述染料组合物的质量百分比；所述染料组合物总量为100％；R和R各自独立的为H或-SONa，且R与R不相同。由该染料组合物制备得到的染料为复合灰色染料，具有优异的染色工艺稳定性、良好的色牢度、高匀染性、易水洗性。