Isophthalic Acid Plants for Sale

Isophthalic acid is a colorless crystalline solid. It is used as an intermediate primarily for unsaturated polyester resins and alkyd and polyester coating resins; other applications include use in aramid fibers, as a component of copolyester resins and in high-temperature polymers. Purified isophthalic acid (PIA) has three major uses: PET copolymer, which is used in bottle resins and to a much lesser extent for fibers. PIA reduces the crystallinity of PET, which serves to improve clarity and increase the productivity of bottle manufacture. Unsaturated polyester resins, where the addition of PIA improves thermal resistance and mechanical performance, as well as resistance to chemicals and water. Polyester/alkyd surface coating resins, where PIA increases resistance to water, overall durability and weatherability.