Styrene-acrylic emulsion with high color rendering and covering power performance and preparation method thereof

The invention discloses a styrene-acrylic emulsion with high color rendering and covering power performance and a preparation method thereof. The styrene-acrylic emulsion is prepared from the following raw material components in corresponding parts by weight: a base material mixture: water, a pH buffer agent, an emulsifier and seed glue; a vinyl monomer solution; the water phase mixture comprises water, an emulsifier and itaconic acid; a water-soluble initiator; the protective glue is acrylic resin; and a neutralizer. The preparation method comprises the following steps: preparing a styrene-acrylic emulsion by taking hydrophilic polymerizable monomers and hydrophobic polymerizable monomers as main raw materials under the action of polystyrene seeds prepared in advance and an emulsifier, then adjusting the pH value to an alkaline condition, adding a certain amount of alkali-soluble acrylic resin, and stirring at a certain temperature until the alkali-soluble acrylic resin is completely dissolved, so as to obta