▎ 摘　　要

NOVELTY - Preparing quick-drying fluorescent ink comprises (a) taking three-necked flask 1 with mechanical stirring device and condenser, adding phloroglucinol, acetoethyl acetate, 1,4-dioxane and concentrated sulfuric acid to three-necked flask 1, allowing stirring device to perform continuous stirring, heat preserving, refluxing and condensing, pouring reaction solution to ice-water bath for cooling, precipitating crystals, filtering with suction, washing with distilled water to obtain substance a, (b) taking three-necked flask 2 with mechanical stirring device and condenser, adding isophorone diisocyanate, polycaprolactone diol, dimethylolpropionic acid and acetone to three-necked flask 2, allowing stirring device to perform continuous stirring, adding catalyst to react, (c) taking three-necked flask 3 with mechanical stirring device and condenser and (d) mixing fluorescent agent c and modified resin f, adding modified mixed substrate, using high-speed disperser for pre-dispersion treatment. USE - The method is useful for preparing quality of the fluorescent ink. ADVANTAGE - The method: improves quality of the fluorescent ink. DETAILED DESCRIPTION - Preparing quick-drying fluorescent ink comprises (a) taking a three-necked flask 1 with mechanical stirring device and condenser, adding phloroglucinol, acetoethyl acetate, 1,4-dioxane and concentrated sulfuric acid to three-necked flask 1, allowing stirring device to perform continuous stirring while the water bath is heated to 60-75 degrees C, heat preserving, refluxing and condensing for 2 hours, pouring reaction solution into ice-water bath for cooling, precipitating crystals, filtering with suction, washing for 2-3 times with distilled water to obtain substance a, dissolving substance a in 5% sodium hydroxide solution with mass fraction and filter, adding 10% sulfuric acid solution with mass fraction to the filtrate, washing filtered precipitate with cold water first, recrystallizing with ethanol to obtain fluorescent base material b, (b) taking three-necked flask 2 with mechanical stirring device and a condenser, adding isophorone diisocyanate, polycaprolactone diol, dimethylolpropionic acid and acetone to the three-necked flask 2, allowing stirring device to perform continuous stirring, adding catalyst to react at 80 degrees C for 2 hours, refluxing and condensing for 2 hours, adding fluorescent base material b to react for 1 hours, adding trimethylolpropane to react for 1 hours, naturally cooling down to 50 degrees C, adding triethylamine for neutralization, reacting for 20-30 minutes, adding deionized water for shear emulsification and dispersion to obtain fluorescent agent c, (c) taking three-necked flask 3 with mechanical stirring device and a condenser, adding isophorone diisocyanate and hydroxyethyl methacrylate to three-necked flask 3, using mechanical stirring device for continuous stirring, adding dibutyltin dilaurate at 70-80 degrees C for 2 hours, refluxing and condensing for 2 hours, reacting to obtain composition d, taking p-toluenesulfonic acid, pentaerythritol and 2,2-dimethylolpropionic acid into the flask, setting temperature of flask to 130-140 degrees C, placing flask in oil bath of flowing nitrogen, reacting for 30-40 minutes, placing product in vacuum drying oven at 55 degrees C under 0.1 Mpa for 10-12 hours to obtain composition e, combining composition d and composition e after mixing uniformly at 70 degrees C and evaporating solvent to obtain modified resin f, and (d) mixing fluorescent agent c and the modified resin f, adding modified mixed substrate, using high-speed disperser for pre-dispersion treatment, placing dispersant and defoamer into the high-speed disperser, continuing dispersion treatment for 30-40 minutes, placing mixture into a three-roll mill for processing, controlling fineness of the mixture to be less than 15 mu m, adding leveling agent and drier to mixture to continue dispersion treatment for 10-20 minutes to obtain a quick-drying fluorescent ink.