Coating composition for two-piece can as well as preparation method and application of coating composition

The invention discloses a coating composition for a two-piece can as well as a preparation method and application of the coating composition, and relates to the technical field of food packaging coatings. According to the invention, acrylic acid is adopted to carry out esterification modification on epoxy resin to obtain epoxy ester containing polymerizable double bonds, and the polymerizable double bonds in the epoxy ester are further utilized to copolymerize with hard and tough monomer isobornyl acrylate, functional monomer acrylate containing phosphate and epoxy group-containing glycidyl methacrylate; by introducing epoxy groups, the loss of the epoxy groups in the process of preparing epoxy ester through esterification modification is made up, the curing efficiency is improved, the acrylic acid modified epoxy resin with both flexibility and hardness and excellent adhesion and stability is prepared, and component migration and overflow are reduced; the prepared coating composition is resistant to acid, sul