High-bio-based acrylic resin dispersion as well as preparation method and application thereof

The invention discloses a high-bio-based acrylic resin dispersion as well as a preparation method and application thereof, and belongs to the technical field of environment-friendly high polymer materials. The preparation method comprises the following steps: preparing modified cellulose and an active solvent according to a certain proportion, and preparing a nano-cellulose dispersion liquid by a grinding method; preparing water-based hydroxyl acrylic resin from the nano cellulose dispersion liquid, a (methyl) acrylate monomer, a bio-based acrylate hydroxyl monomer, a carboxyl monomer, an initiator and a molecular weight regulator in parts by mass; and neutralizing the prepared water-based hydroxy acrylic resin by using a neutralizing agent, and dispersing by using deionized water to obtain the high-bio-based acrylic resin dispersion. According to the invention, the modified cellulose grafted with carbon-carbon double bonds is utilized to balance or eliminate the adverse effect of bio-based acrylate and incre