Colorful acid and alkali resistant laser printing ink and preparation method thereof

[0022] 1) Weigh 10 parts of methyl ethyl ketone and 20 parts of isopropanol into the container, stir at a speed of 700r / min for 20min, and disperse evenly;

[0023] 2) Weigh 25 parts of diphenolic propane type epoxy resin with a solid content of 30wt% and an average molecular weight of 500, add the dispersed solvent, stir at a speed of 1500r / min for 60min, and then disperse evenly;

[0024] 3) Weigh 10 parts of 120 red toner and slowly add to the above mixed solution, while stirring at the speed of 1000r / min, stir for 20 minutes to make the dispersion even; then add the mixed solution to the sand mill and grind for 45 minutes , the temperature is controlled at 50~60℃ until the fineness is ≤10μm;

[0025] 4) Weigh 2 parts of ethylene bis stearic acid amide and add it to the ground solution, stir at a speed of 1000r / min for 30min, disperse evenly, and obtain the color acid and alkali resistant laser printing ink.

[0027] 1) Weigh 10 parts of methyl ethyl ketone and 20 parts of isopropanol into the container, stir at a speed of 700r / min for 20min, and disperse evenly;

[0028] 2) Weigh 25 parts of diphenolic propane type epoxy resin with a solid content of 40wt% and an average molecular weight of 340, add the dispersed solvent, stir at a speed of 800r / min for 45min, and then disperse evenly;

[0029] 3) Weigh 10 parts of 120 purple toner and slowly add to the above mixed solution, stir while adding, the rotation speed is 1500r / min, stir for 30min to make the dispersion even; then add the mixed solution into the sand mill, grind for 30min , the temperature is controlled at 50~60℃ until the fineness is ≤10μm;

[0030] 4) Weigh 3 parts of ethylene bis stearic acid amide and add to the ground solution, stir at 800r / min for 45min, disperse evenly, and obtain the color acid and alkali resistant laser printing ink.

[0032] 1) Weigh 30 parts of butanone and 10 parts of isopropanol into the container, stir at 1000r / min for 30min, and disperse evenly;

[0033] 2) Weigh 30 parts of diphenolic propane type epoxy resin with a solid content of 50wt% and an average molecular weight of 380, add the dispersed solvent, stir at a speed of 1000r / min for 80min, and then disperse evenly;

[0034] 3) Weigh 15 parts of 120 blue toner and slowly add the above mixed solution, and stir while adding at a speed of 1200r / min, stir for 45 minutes to make the dispersion even; then add the mixed solution to a sand mill and grind for 60 minutes , the temperature is controlled at 50~60℃ until the fineness is ≤10μm;

[0035] 4) Weigh 6 parts of ethylene bis stearic acid amide and add it to the ground solution, stir at a speed of 1200r / min for 60min, disperse evenly, and obtain the color acid and alkali resistant laser printing ink.