GER 85L Glycerin ester of gum rosin Wuzhou Sun Shine Tackifier >> Rosin ester >> Glycerol ester ADHESIVE >> Hot-melt ADHESIVE >> Hot-melt >> Pressure sensitive (HMPSA) Glycerin Ester of Gum GER-85L Glycerin esters of gum rosin are made from gum rosin or refined gum rosin through esterification with glycerin. Use in hot melt adhesive, pressure-sensitive adhesives and coatings. Glycerin ester of gum rosin. Used as a tackifier in hot melt and pressure sensitive adhesives.