Hydrogenated gum rosin ester is a type of rosin derivative produced by esterifying hydrogenated gum rosin with various alcohols or polyols.

Gum rosin, also known as colophony, is a natural resin obtained from pine trees and is commonly used in various industries. Hydrogenated gum rosin is a modified form of gum rosin that has undergone a hydrogenation process, which involves the addition of hydrogen to the rosin molecule. This process typically increases the stability and resistance to oxidation of the rosin.

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

Hydrogenated gum rosin esters find applications in industries such as adhesives, coatings, inks, and food packaging. They are often used as tackifiers or as components in adhesive formulations to enhance adhesion and cohesion properties. Additionally, their improved stability makes them suitable for applications where resistance to oxidation is important.

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