Accession Number : AD0164352

Title :   Thermally Stable Heterocyclic Anthraquinone Polyimides and Method for Their Synthesis.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Browning,Charles E.

Report Date : 07 NOV 1972

Pagination or Media Count : 4

Abstract : The patent describes aromatic heterocyclic polyimides having a high thermal stability synthesized by the condensation of 2,3,6,7-anthraquinonetetracarboxylic dianhydride with an aromatic diamine, such as 2,6-diaminoanthraquinone. The high thermal stability of the polymers renders them suitable for use in many aerospace applications where high temperatures are encountered. In particular, the polymers are useful for producing laminates, molded articles, films, fibers, and ablative materials.

Descriptors :   *Patents, *Heat resistant plastics, *Polyimide resins, Polymerization, Condensation reactions, Synthesis(Chemistry), Thermal stability, High temperature, Quinones, Nitrogen heterocyclic compounds

Subject Categories : Organic Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE