▎ 摘　　要

NOVELTY - Preparing graphene dispersing agent involves sodium lignin sulfonate, ammonium persulfate and de-ionized water into the reaction container to fully dissolve the sodium lignosulfonate. The obtained mixture is added with trans-1,2,3-propene tricarboxylic acid and acrylamide to react. After the reaction is complete, the reaction solution is cooled to room temperature. The obtained mixture is added with an organic solvent dropwisely to precipitate a solid precipitate. The solid precipitate is separated out. The mixture is filtered, and then purified. USE - Method for preparing graphene dispersing agent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene/lacquer composite anticorrosive paint, which involves: (A) dissolving graphene dispersing agent in water; (B) stirring ultrasonically, until the mixture is completely dissolved; (C) adjusting the pH to alkaline; (D) adding graphite alkene ultrasonically after uniformly mixing; and (E) stirring the mixture uniformly.