Description General description Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution (PAA) converts to polyimide at 300oC. The FTIR spectra indicates a carbonyl stretch of carboxylic acids in PAA at 1650 cm-1. Following the imidization process, the peak at 1720cm-1 grows, indicating the formation of imide group. Application It is used as a precursor for polyimide coatings. It may also be used as a precursor for the preparation of carbon hollow fiber membranes. Packaging 1 L in poly bottle 250 mL in poly bottle Legal Information Pyre-M.L. is a registered trademark of Industrial Summit Technologies Corp.