Disperse dye composition for bio-based PTT (polytrimethylene terephthalate) fabric steam-washing-free printing process

The invention relates to a disperse dye composition for a bio-based PTT (polytrimethylene terephthalate) fabric steam-washing-free printing process. The disperse dye composition is characterized by being prepared from the following ingredients: 10 to 25 percent of high-temperature-resistant disperse dye, 20 to 30 percent of compounds conforming to a general formula (I), 5 to 8 percent of hydrogenated castor oil, 5 to 10 percent of chlorinated paraffin and the balance of deionized water. The disperse dye composition has the advantages that the high temperature resistance performance of the ingredients is good, so that the disperse dye composition is suitable for high-temperature dyeing.