High Performance Elastomers.
Final rept. 24 Feb 87-30 Sep 93,
TECHNOLUBE PRODUCTS CO VERNON CA
Pagination or Media Count:
The investigations of processes leading to high performance elastomer systems based on quinoxaline- or imide rings linked by perfluoroalkylether chains, initiated in February 1987 and described in part in three Interim Reports, were completed. In the final portion of the program mono-, dumbbell-, and polymeric quinoxalines linked by perfluoroalkylether chains, either directly to the heterocycle or via a phenyl group, were synthesized and evaluated. Two types of linking groups were studied -CF2CF2OCF2CF25- A arrangement and -CF2CF2CF2OCF24OCF24OCF2CF2CF2- B arrangement. The thermal stability of the quinoxalines based on the A linkage was approx. 316 deg C. Materials linked by the B arrangement to the quinoxaline via p-phenylene units gave dumbbell- and polymeric quinoxalines of thermal and thermal oxidative stability exceeding 330 deg C, proving the validity of the approach taken. Investigations of perfluoroalkylether-linked imides were limited the yields were low and purifications tedious.
- Polymer Chemistry
- Organic Chemistry
- Elastomers and Rubber