Phthalic anhydride has another major use in the production of polyester resins and other minor uses in the production of alkyd resins used in paints and lacquers, certain guys, insect repellents, and urethane polyester polyols. Phthalic anhydride has also been used as a rubber scorch inhibitor and retarder.
What are the major uses of phthalic anhydride?
