Tackifer Resins
Properties and Applications
Tackifiers are low MW resins (oligomers) that are added to elastomers to improve tack and peel adhesion. Their glass transition temperature is typically higher than that of the base polymer but their molecular weight
is much lower. They enhance the mobility and tack of the base polymer and provide functionality that promotes specific adhesion. They also lower the melt viscosity and softening point of the polymer system.
The three most important groups of tackifiers are hydrocarbon resins, rosin esters, and
polyterpenes. Hydrocarbon resins are based on petroleum feedstocks whereas terpenes and rosin
esters are gained from pine trees.
The main markets for tackifier resins are hot melts, sealants, caulks, tapes, labels, paints and printing inks.
They are also used as additives in a variety of other products including certain food and beverages, chewing gums, plastics
and rubbers as well as detergents, cosmetics and pharmaceuticals.