High-weather-resistance and high-adhesion building facade coating and production process thereof

The invention discloses a building facade coating with high weather resistance and high adhesive force. The building facade coating is prepared from the following raw materials in parts by weight: 20-25 parts of hydroxy acrylic resin, 35-40 parts of a solvent, 10-15 parts of chitosan blended flaky talcum powder modified glass beads, 5-9 parts of a barium metaborate modifier, 3-6 parts of a wetting agent, 2-5 parts of a coalescing agent and 1-3 parts of a polyisocyanate curing agent. According to the building facade coating disclosed by the invention, the hydroxy acrylic resin is adopted as a matrix, the wetting agent and the coalescing agent are used for blending treatment, and the chitosan is matched with the flaky talcum powder modified glass beads and the barium metaborate modifier for coordination and synergistic interaction, so that the product building facade coating has excellent adhesive force and reflection performance, the product performance is coordinated and improved, and the coating has the adva