<I>EASTMAN</I> HPHP Glycol,Molten 3-Hydroxy-2,2-Dimethylpropyl 3-Hydroxy-2,2-Dimethylpropanoate 1115-20-4 Eastman Chemical Company Solvent >> Glycols & glycol ether Polyester Coatings >> Powder Coatings Automotive OEM Coil Coating Powder coating Eastman HPHP glycol, hydroxypivalyl hydroxypivalate, is a difunctional ester-glycol used for manufacturing polyester resins for the powder, coil, and automotive coatings market. HPHP is structurally similar to Eastman NPG glycol so they share many of the same structure/property relationships. Resins containing HPHP impart flexibility to coatings while maintaining weathering and the overall good balance of mechanical properties provided by NPG. Consequently, HPHP is an excellent choice for automotive primer surfacers with increased chip resistance and coil coatings that require a high degree of flexibility and exterior durability. In powder coatings, HPHP enhances the appearance of the coating film by improving flow and leveling during cure without compromising package stability. It has excellent weathering, improved resin solubility, reduced resin crystallinity, improved flexibility, lower resin melt viscosity, reduced resin glass transition temperature. Hydroxypivalyl hydroxypivalate difunctional ester-glycol. Used in automotive, coil and powder coatings. Offers good weathering and improved resin solubility. Provides reduced resin crystallinity. Exhibits improved flexibility and lower resin melt viscosity. Possesses reduced resin glass transition temperature.