KOBOND™ 8429 is a highly efficient, silicone-free polymeric defoamer. It provides excellent compatibility and lasting defoaming performance for unsaturated polyester, epoxy, 2K PU, UV-curable, solvent-borne, and solvent-free systems. The additive effectively eliminates process-induced foam, preventing surface defects like pinholes and craters.
Silicone-free system with excellent compatibility and recoatability
Strong defoaming and anti-foaming performance
Effective in high-viscosity and high-solids systems
Rapid release of microbubbles, improving film leveling and gloss.
Long-lasting efficiency at low dosages.
Appearance | Light yellow transparent liquid |
Solid Content | 40% |
Solvent | Solvent naphtha |
Note: These values are typical and are not intended for use as specifications
KOBOND™ 5429 is widely used in unsaturated polyester (SMC/BMC gel coats, synthetic marble), epoxy potting compounds, 2K polyurethane systems, UV-curable coatings, solvent-borne/solvent-free industrial coatings, wood coatings, protective coatings, as well as screen, UV, and transfer inks. It provides effective foam control during manufacturing and application, ensuring smooth surface quality.
KOBOND™ 5429 is supplied in 25kg pails and 200Kg drums.
Keep in dry, cool and well-ventilated place. When stored at temperatures between 10°C and 35°C in the original unopened containers, KOBOND™ 5429 has a shelf life of 24 months from the date of production.