Stepanpol PD-56 Ortho phthalate diethylene glycol based polyester polyol Stepan PU - Polyols >> Polyester ADHESIVE >> Hot-melt ADHESIVE >> Solvent based ADHESIVE >> Radiation Curing (UV/EB) ADHESIVE >> Water-based SEALANT >> Foam These polyester polyols are the primary raw material components used to formulate a variety of polyurethanes. Based on unique ortho-ester linkages, they have proven their ability to enhance performance and reduce your formulation costs. Tests have shown that they: Improve hydrolytic stability Improve select physical properties Promote adhesion to metal substrates STEPANPOL® polyester polyols can be used in adhesive formulations. These polyols are low Tg and amorphous (or non crystalline) in their morphology. They tend to lower melt viscosity and flow point. They strongly increase elasticity. Because of their good wetting capacities, these products can provide enhancements of adhesion to a variety of substrates. Some potential adhesive applications include: synthesis of urethane prepolymers for reactive hot melt adhesives synthesis of water borne polyurethane dispersions formulation of liquid urethane adhesives synthesis of radiation curable oligomers polyol cross linker in radiation curable, cationic cure formulations reactive diluents to increase the solids content of solvent based adhesives epoxy flexibilizers for adhesive and molding/potting applications STEPANPOL® polyester polyols can be used in sealant formulations. These polyols are low Tg and amorphous (or non crystalline) in their morphology. They tend to lower melt viscosity and flow point. Because of their good wetting capacities, these products can provide enhancements of adhesion to a variety of substrates. Some potential sealant applications include synthesis of urethane prepolymers polyol curative for two component urethane sealants formulation of polyurethane foaming sealants and adhesives formulation of liquid urethane adhesives as a modifier to promote adhesion and to reduce raw material cost reactive diluents to increase the solids content of solvent based sealants STEPANPOL PD-56 is a diethylene glycol-phthalic anhydride-based polyester polyol. STEPANPOL PD-56 can be used in urethane coatings, adhesives, sealants, and elastomer applications. It has excellent hydrolysis resistance, very good thermal stability, and primary hydroxyl advantage. It may promote adhesion to a variety of metal and plastic substrates. In reactive hot melt adhesives, it provides short open time and good green strength (Lauan to FRP). Diethylene glycol-phthalic anhydride-based polyester polyol. Used in formulating urethane adhesives and sealants. Possesses low Tg, amorphous (or non crystalline) morphology and good wetting capacities. Lowers melt viscosity and flow point. Increases elasticity. Exhibits very good hydrolysis resistance, thermal stability and primary hydroxyl advantage. Promotes adhesion to a variety of metal and plastic substrates. Provides short open time and good green strength in reactive hot melt adhesives.