Triethylene glycol ester gum rosin, often abbreviated as TEG ester gum rosin, is a type of rosin derivative produced by esterifying gum rosin with triethylene glycol.

Gum rosin, also known as colophony, is a natural resin obtained from pine trees and is commonly used in various industries. Triethylene glycol is a colorless and odorless liquid commonly used as a solvent and a plasticizer.

The esterification process involves reacting gum rosin with triethylene glycol under specific conditions, resulting in the formation of ester bonds between the rosin and the glycol molecules. This modification alters the properties of the gum rosin, making it more soluble in certain solvents and improving its compatibility with other materials.

TEG ester gum rosin finds applications in industries such as adhesives, coatings, inks, and rubber compounding. It is often used as a tackifier or as a component in adhesive formulations to enhance adhesion and cohesion properties. Additionally, its improved solubility makes it useful in various coating applications.

Like other rosin derivatives, proper safety measures should be taken during the handling and processing of TEG ester gum rosin products.