Ethynyl-containing aromatic polyamide resin
 Aromatic polyamide resins having repeating units, each containing at least one m-ethynyl amido subunit: ##STR1## These resins can be thermally treated to undergo intra-molecular cyclization, without evolution of volatiles, into polyimidines containing the following subunit. ##STR2## 
The United States of America as represented by the Secretary of the Air Force
C
C08G
inventional
George J. Robert C.
Moore Evers