Synthesis of a Thiophene-Containing Bisbenzil and a Derived Polyquinoxaline
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA
Pagination or Media Count:
The development of polyphenylquinoxaline PPQ polymers as high- temperature-resistant materials has been hindered, in part, by the high cost of one resin component, 1,4-bis phenylglyoxaloyl benzene PGB. A low-cost synthesis of PGB or PGB-type compounds to be substituted for PGB in the synthesis of PPQ-type polymers is therefore desirable. This report deals with the synthesis of 1,4-bis 2-thienylglyoxaloyl-benzene THGB by the benzoin condensation route in the search for a low-cost replacement for PGB, and its reaction with 3,3 -diaminobenzidine DAB to prepare poly2-thienylquinoxaline PTHQ. Some of the properties of the polymer have been determined and are discussed.
- Polymer Chemistry