color fixing agent for reactive dyeing and preparation method of color fixing agent

The invention provides a color fixing agent for reactive dyeing and a preparation method of the color fixing agent. The preparation method includes the steps: (1) sequentially adding imidazolium chloride monomers, trifluoroethyl acrylate, dihydroxyethyldiallyl ammonium chloride, acidity regulator and deionized water into a reaction kettle equipped with a thermometer, a stirrer and a reflux condenser prior to starting reflux condensation, stirring and starting heating to increase temperature; (2) when the temperature rises to 85-100 DEG C, then dropwise adding initiator solution which is 1-10% in mass concentration and prepared with initiator and part of the deionized water, controlling the dropwise adding time between 0.5 hour and 3 hours, and controlling the temperature between 85 DEG C and 100 DEG C during dropwise adding; (3) after addition, performing thermal reaction for 1-5 hours, then adding the balance water, and discharging after stirring for 0.5 hour to obtain the color fixing agent. 本发明提供种用于活性染料染色的