Accession Number : AD0713886

Title :   Synthesis of Co-Imide-Quinoxalines,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Augl,J. M.

Report Date : 20 JUL 1970

Pagination or Media Count : 19

Abstract : Phenylated, ordered imide-quinoxaline copolymers of high oxidative-thermal stability were prepared by one-step solution condensation of aromatic tetraamines with N,N'-bis(4-benzilyl)pyromellitimide. Polymerization in m-cresol leads to high molecular weight polymers that remain soluble. Thermal gravimetric analysis and isothermal decomposition at 400C shows that these polymers are as stable as polyimides or polyquinoxalines. The polymer decomposition temperatures range between 495 and 550C, depending upon structure. Also, the rate of isothermal decomposition at 400C in air showed a strong dependency of weight loss on structure. Tough films were cast from solution. (Author)

Descriptors :   (*HEAT RESISTANT PLASTICS, SYNTHESIS(CHEMISTRY)), IMIDES, KETONES, ORGANIC SULFUR COMPOUNDS, NITROGEN HETEROCYCLIC COMPOUNDS, THERMAL STABILITY, POLYMERIZATION

Subject Categories : Organic Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE