Used as an intermediate in the production of high-performance polymers, especially in the synthesis of specialty polyesters and copolyesters. It contributes to improving flexibility, clarity, and thermal stability in polymer formulations. Commonly applied in the development of optical films, electronic encapsulants, and engineering plastics where enhanced processability and durability are required. Also utilized in coatings and adhesives due to its ability to promote adhesion and resistance to environmental degradation.