T2939 can be used in water-based, solvent-based/oil-based systems. It can be applied in defoaming of high-temperature, strong alkali and high-viscosity systems. This product has good stability and excellent formulation adaptability. It can be used in a wide range of temperature and pH value and easy to operate. It has strong dispersibility in water with fast dispersion rate and does not affect transparency. It has excellent compatibility, good compatibility with solvent. It is a high-efficiency defoamer and, it is suitable for adding at the paint let-down stage, can also be added before high speed dispersion or grinding, and can be added at any stage in the paint making process.