Pentaerythritol ester gum rosin is a type of rosin derivative produced by esterifying gum rosin with pentaerythritol.

Gum rosin, also known as colophony, is a natural resin obtained from pine trees and is commonly used in various industries. Pentaerythritol is a polyol compound with four hydroxyl groups, making it useful for esterification reactions.

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

Pentaerythritol ester gum rosin finds applications in industries such as adhesives, coatings, inks, and chewing gum bases. 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.

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