The invention relates to a production method of strong-
solvent-resistant thermosetting organic fluorescent
pigment. The production method comprises the following steps of: primary feeding, mixing, high-speed dispersion,
polymerization, constant-temperature baking, curing, coarse
grinding, fine
grinding, secondary feeding, mixing,
color matching, detection and
package, wherein the
polymerization is steam low-temperature
polymerization; after the step of fine
grinding and before the step of secondary feeding, adding the steps of acidizing, dehydrating and
drying. The production method has the advantages that due to adoption of low-temperature steam for
thermal reaction, the reaction time is prolonged by 2.5 hours compared with that in the existing process, the intermolecular
hydroxylation and etherification reaction are effectively enhanced; due to the acidizing process, the free
formaldehyde in a product is effectively removed, unreacted small molecules at the condensation stage are promoted to react continuously, and further the molecular crosslinking degree is improved; and the
decomposition points of the product are improved, the damage of strong solvents such as
ketone and ester can be effectively resisted, the
solvent resistance is greatly improved, and the application of the thermosetting organic fluorescent
pigment in the aspects of paint and oil ink is expanded.