Accession Number : AD0164368
Title : Thermally Stable Polyimides.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Browning,Charles E.
Report Date : 12 DEC 1972
Pagination or Media Count : 3
Abstract : The patent describes aromatic heterocyclic polyimides, thermally stable at high temperatures. They are produced by the condensation of 2,6-diaminoanthraquinone and an aromatic tetracarboxylic dianhydride such as 1,4,5,8-naphthalenetetracarboxylic dianhydride. Because of the high thermal stability of the polyimides, they are eminently suitable for use in various aerospace applications where high temperatures are encountered. In particular, the polymers are useful for producing films, fibers, laminates, molded articles and ablative materials.
Descriptors : *Patents, *Polyimide resins, Aromatic polycyclic hydrocarbons, Condensation reactions, Heat resistant plastics, Thermal stability, Polymerization, Molecular structure, Nitrogen heterocyclic compounds
Subject Categories : Organic Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE