Modified light-cured rosin resin and production process thereof

The invention relates to a production process of modified light-cured rosin resin. The process comprises the following steps: a rosin melting step; a first modification step; a second modification step; a third modification step; and a fourth modification step. The production process of the modified light-cured rosin resin is simple and ingenious in steps. A glycidyl ester structure with epoxy is introduced into the modified light-cured rosin resin obtained by the production process of the modified light-cured rosin resin, so that the wettability of the modified light-cured rosin resin is improved. A long-chain isocyanate group is introduced, so that the polarity of the modified light-cured rosin resin is reduced, the surface tension of the modified light-cured rosin resin is regulated and controlled, the adhesive force between the modified light-cured rosin resin and a base material is improved, and meanwhile, the molecular weight of the modified light-cured rosin resin is improved, so that the modified ligh