Latex paint additive is an indispensable part of latex paint, which can improve production technology, maintain storage stability, improve construction conditions, improve product quality and give special functions.

Also known as paint auxiliary material, it is an auxiliary material for preparing paint, which can improve the performance of paint and promote the formation of coating film. There are many kinds, including drier, toughening agent, emulsifier, thickener, pigment dispersant, defoamer, leveling agent, anti-skinning agent, matting agent, light stabilizer, mildew inhibitor, antistatic agent (see plastic additives) and so on. Among them, drier and toughening agent are the most commonly used. At present, the research of coating additives mainly focuses on the additives for waterborne latex paint.