abstract |
The present invention relates to a polymeric material that can be obtained by reaction of (A) at least one polyimide, selected from condensation products of (a) at least one polyisocyanate with an average of at least two isocyanate groups per molecule and (b) at least one polycarboxylic acid with at least 3 COOH groups per molecule or the anhydride thereof, (B) at least one diol or triol. |