Aromatic Polyester Polyols Provide a Novel Approach to Reactive Hot Melt Adhesives

摘要

Previously, we have demonstrated the superior hydrolytic stability of ortAo-phthalic polyesters. In this paper, we review several new ortho-phthalic based polyols which were developed for polyurethane reactive (PUR) hot melt adhesives. These polyesters allow a formulator broad processing versatility in PUR hot melt adhesive applications. We demonstrate several typical properties these esters provide including open time, green strength and substrate bonding profiles. Also, a design-of-experiment approach was implemented to evaluate and optimize formulations for specific applications.