META-CARBORANE-CONTAINING BISMALEIMIDES - NEW MONOMERS FOR THE SYNTHESIS OF POLYIMIDES

The reaction of maleic anhydride with 1,7-bis(4,4'-aminophenylamido)-m -carborane and 1,7-bis(4,4'-aminophenylcarboxy)-m-carborane leads to t he formation of the corresponding bis(maleamidocarboxylic acids) in qu antitative yield. The subsequent dehydration of these compounds in a m ixture of acetic anhydride and acetic acid in the presence of sodium a cetate and triethylamine leads to m-carborane-containing bismaleimides , whose structure was indicated by IR spectroscopy. The chemical prope rties of these compounds were studied.