Synthesis of Co-Imide-Quinoxalines,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 20, 1970
- Accession Number
- AD0713886
Entities
People
- J. M. Augl
Organizations
- Naval Ordnance Laboratory