EH-825 phenol modified acrylic acid emulsion is an anionic acrylate polymer synthesized by grafting bio based phenols. This lotion has excellent leveling and wettability, and is especially suitable for anti rust primer of steel structures. It has excellent anti flash rust performance, can save the use of anti flash rust agent, and can also be used as wood paint primer. This product is environmentally friendly and contains a large amount of bio based substances, making it a non hazardous water-based environmentally friendly product.