- Chemical Family:Polyesters, Unsaturated Polyester (UPE), Bisphenols
- Functions:Resins, Binders & Matrix Materials
- Compatible Polymers & Resins:Unsaturated Polyester (UPE)
FILCO® 661 is a bisphenolic, unsaturated polyester resin available in powder form, specifically employed as a binder for chopped strand mat applications. It presents as a light yellow powder. Notable product characteristics include a very high molecular weight, rapid solubility in styrene, a high binding capacity for glass fibers, particularly in 'hot melt' operating conditions, and excellent compatibility with unsaturated polyester matrices.