- Functions:Film Former
- Chemical Family:Polyesters, Unsaturated Polyester (UPE)
FILCO® 389 represents a highly unsaturated polyester resin meticulously dispersed within a non-ionic water dispersion, specifically employed as a film former in glass fiber sizings. Notably, FILCO® 389 does not contain DAP (diallyl phthalate) and is suitable for applications involving food contact. Its appearance is that of a milky liquid. Key product characteristics include high unsaturation, integration of a non-ionic emulsifier within the polymer, stability against hydrolysis and sedimentation, a narrow particle size distribution, and remarkable high mechanical shear stability, even in diluted emulsions.