Waterproof coating for building waterproofing

The invention discloses a waterproof coating for building waterproofing. The coating comprises the following raw material components in parts by weight: main materials: 100-200 parts of Portland cement, 20-30 parts of pure acrylic emulsion, 10-30 parts of hydroxyethyl cellulose, 10-50 parts of a coalescing agent, 10-20 parts of an ultraviolet light absorber, 20-30 parts of a bactericide, 10-20 parts of dimethyl phthalate, 10-20 parts of ethyl isocyanate methacrylate, 15-25 parts of xylene, 20-30 parts of styrene and 10-20 parts of a polyvinyl acetal solution; and auxiliary materials: 10-30 parts of quartz silica sand, 10-20 parts of a dispersing agent, 10-30 parts of a defoaming agent, 10-30 parts of a surfactant and 10-20 parts of an antioxidant. The invention relates to the technical field of waterproof coatings. According to the waterproof coating for building waterproofing, especially the coalescing agent and the polyvinyl acetal solution are added, so that the viscosity of a product after mixing is effec