▎ 摘　　要

NOVELTY - A stone protective agent comprises 50-70 pts. wt. polyfluoroethylene propylene concentrated dispersion, 1-2 pts. wt. graphene, 1-2 pts. wt. tourmaline powder, 15-20 pts. wt. methyl silicone oil and 400-450 pts. wt. solvent. USE - Stone protective agent (claimed). ADVANTAGE - The waterproof and oil-proof stone protective agent ensures strong adhesion performance and high antibacterial properties, and releases negative oxygen ions, and is prepared by simple and reliable process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of protective agent, which involves adding polyfluoroethylene-propylene dispersion, graphene, tourmaline powder and methyl silicone oil, adding solvent, stirring at room temperature for 30 minutes to obtain clear solution as stone protective agent.