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A polymer formed from the condensation product of an aromatic dianhydride and an aromatic diisocyanate. Polyimides are similar to polyamides but much more heat resistant. They can be formulated as either thermoplastic or thermosetting resins and have been used for adhesives, binders, and fibers. Polyimide fibers (P-84®) were developed in Austria. They have good chemical resistance and are flame retardant. Polyimide fibers are used in nonwoven fabrics, emission filters, and some types of protective clothing, especially in Europe.

Synonyms and Related Terms

PI; poliimida (Esp.); polyimide (Fr.); poliimida (Port.)

Examples: Vespel® [DuPont]; P-84® [Inspec]; Meldin® [Saint-Gobain];



Other Properties

Cross section is multi-lobal and irregular

Melting Point >315

Hazards and Safety


Sources Checked for Data in Record

  • Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
  • Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
  • Website address 1 Comment: www.textileworld.com/categories/9905/fibers.html;