申请人:The United States of America as represented by the Secretary of the Air
公开号:US04657708A1
公开(公告)日:1987-04-14
Aromatic monomers, each containing at least one o-ethynyl carboxylic acid halide subunit: ##STR1## wherein X is Cl or Br. These monomers can be reacted with amines to form aromatic polyamide resins which can be thermally treated to undergo intromolecular cyclization, without evolution of volatiles, into polyimidines.