The invention relates to a preparation method of thermosetting
acrylic resin for electrogilding oil. The preparation method comprises the following steps of: 1) preparing 10 to 30 weight percent of
unsaturated polyester intermediate, 5 to 20 weight percent of carboxyl-containing
acrylic acid monomer, 2 to 10 weight percent of hydroxyl-containing
acrylic acid monomer, 12 to 25 weight percent of
styrene monomer, 10 to 30 weight percent of other
acrylic acid monomers, 1.5 to 4.5 weight percent of initiator and 30 to 45 weight percent of
solvent which serve as raw materials; 2) putting the total formula amount of
unsaturated polyester intermediate and partial formula amount of
solvent and initiator into a reaction kettle, uniformly stirring, introducing N2, and heating with stirring for temperature rise until refluxing is realized; and 3) dripping the total formula amount of monomer and partial formula amount of initiator and
solvent at the refluxing temperature of between 135 and 150 DEGC to form a mixture, preserving the heat at the refluxing temperature of between 135 and 150 DEG C for 2 to 4 hours, replenishing the residual initiator and solvent to form the mixture, preserving the heat for 4 to 6 hours, cooling and stopping the reaction. The thermosetting
acrylic resin is applied to the electrogilding oil, has
high adhesion performance, high glossiness, high rigidity and highsalt
fog resistance, and particularly has high low-temperature bridging performance and high dissolubility when mixed with other resins.