▎ 摘　　要

NOVELTY - A back glue comprises component (A) comprising 55-75 %mass acrylic acid emulsion, 10-30 %mass aqueous polyurethane emulsion, 0.2-0.3 %mass thixotropic agent, 0.1-0.5 %mass defoamer, 0.1-0.5 %mass bactericide, and remaining water. USE - The back glue is useful for ceramic tile in household decoration. ADVANTAGE - The ceramic tile back glue has excellent water resistance and flexibility, provides coating, which has excellent bonding performance, and can effectively improve the problem of high water absorption of acrylic acid emulsion by adding polyurethane emulsion; and solves the problems that the coating is easy to foam and fall off with the ceramic tile layer by combining thixotropic agent having good thixotropic property with defoamer, thus avoiding the hollowing and arching of the ceramic tile.