Fomrez 66-56 Hexanediol adipate Chemtura (Crompton-Uniroyal Chemical) Polyurethane (PU) - Polyols >> Polyester Fomrez® 66-56 Polyester Polyol Uniroyal Chemical Product Description: A hexanediol adipate with a molecular weight of 2000, suggested for use in coatings and adhesives. Hexanediol adipate. Used in coatings.