- Chemical Family:Polyesters
TEROL® 649 is a modified aromatic polyester polyol with high aromatic content and high functionality. It is recommended for polyurethane (PUR) systems requiring fire test ratings, especially those using 3.0 or 4.0 generation blowing agents. TEROL 649 can be used at high loadings, reducing the need for brominated flame retardants and the amount of polyether polyols due to its high functionality.