- Functions:Film Former
- Chemical Family:Polyesters, Unsaturated Polyester (UPE)
- Compatible Polymers & Resins:Unsaturated Polyester (UPE), Epoxies (EP)
- Processing Methods:Spray Lay-up
FILCO® 350 is an unsaturated polyester resin in a non-ionic water emulsion, serving as a film former in sizings for glass fibers. The appearance is a milky liquid, and characteristics of the resulting film include being clear, non-tacky, and compatible with unsaturated polyesters. It also exhibits rapid solubility in styrene.