Accession Number : ADD010256
Title : Oxy- and Thioaryl-Phenylated Aromatic Heterocyclic Polymers.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Reinhardt,Bruce A ; Arnold,Fred E
Report Date : 19 Apr 1983
Pagination or Media Count : 8
Abstract : Acetylene-terminated compounds show promise for use in the preparation of matrix resins and adhesives for advanced aircraft and aerospace systems, and for other high-temperature applications. These compounds can be polymerized thermally without the evolution of volatile by-products, thereby obviating the problem of void formation in composite structures and molded articles. Although many of the aromatic, heterocyclic, and aromatic/heterocyclic polymers exhibit superior mechanical and thermal properties, many of these polymers exhibit the disadvantages that they are soluble only in polar solvents, generally strong acids, which is a disadvantage from a processing standpoint.
Descriptors : *Patents, *Synthesis(Chemistry), *Polymers, *Heterocyclic compounds, Phenyl radicals, Aryl radicals, Oxygen, Dienes, Methodology, Inventions, Aromatic compounds
Subject Categories : Polymer Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE