Abstract
Poly-( o-acetamido)imides of high molecular weight that are soluble in organic solvents, have been obtained by treating the reaction solutions in DMF after preparation of poly-( o-amino- o-carboxy)amides, with excess of a pyradine-acetic anhydride mixture. The main characteristics of the poly-( o-acetamido)imides have been studied and the processes occurring during heat treatment of these polymers under various conditions are discussed. It is shown that the method developed here permits preparation of polyimides containing amide side groups of any structure, by varying the acid component of the cyclizing mixture.
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