Modified acrylic resin, preparation method thereof and high-transparency primer

The invention belongs to the technical field of modified resin, and discloses modified acrylic resin, a preparation method thereof and high-transparency primer. The modified acrylic resin is prepared from the following raw material components: an amino ester monomer, butyl methacrylate, styrene, hydroxypropyl acrylate, acrylic acid and an initiator. The amino ester monomer is an amino ester monomer containing a tertiary amino group. Amino ester monomers are introduced into acrylic resin through graft polymerization, organic amine macromolecules with large molecular weight are formed, the organic amine macromolecules are not prone to volatilization loss in the paint production process, the reaction activity is moderate after two components are mixed in the construction process, and the construction activation time is long. Construction is carried out under low-temperature (0 DEG C or below) weather in winter, and the technical problems that the drying speed, the sanding property and other paint film properties