The invention discloses a colorful acid and alkali resistant
laser printing ink and a preparation method thereof. The
printing ink is composed of the following components in parts by weight: 0 to 30 parts of
butanone, 10 to 30 parts of isopropanol, 2 to 6 parts of curing agent, 10 to 15 parts of
pigment, and 10 to 30 parts of
glycidyl ether epoxy resin. The
glycidyl ether epoxy resin is adopted to produce the
printing ink, aliphatic
polyamine is further chosen as the curing agent, the acid and alkali resistant performance of the printing ink is strengthened through optimizing the formula, thus the shortage that the colorful
laser printing ink is lost when being mixed with acid and alkali is overcome, moreover, the color of the
laser printing product is more abundant, and the patterns are more clear.