Resin 145-Q Rosin pentaerythritol ester Nanda Chemical Tackifier >> Rosin ester >> Penthaerythritol (penta) ester ADHESIVE Rosin pentaerythritol ester is light yellow and transparent solid, important material for manufacturing adhesive to improve drying and water resistance. Light color, durability, adhesion promoter. Light yellow and transparent rosin pentaerythritol ester. Used as tackifier and adhesion promoter in adhesives. Improves durability, drying and water resistance.