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Purified Isophthalic Acid (PIA)

CAS No: 121-91-5

Purified Isophthalic Acid (PIA) is used primarily in unsaturated polyester resins. It improves the property balance for coating resins and enhances clarity of PET-bottle grade resins.

Isophthalic Acid 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.

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Also known as: Benzene-1,3-dicarboxylic acid; meta-Phthalic acid

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Purified Isophthalic Acid (PIA)