The reaction of dianhydrides with diamines gives ________.
-
Aromatic polyimide
-
Aromatic polysulfides
-
Polyethersulfone (PES)
-
Aromatic polyether
A
Correct answer
Explanation
Aromatic polyimide are synthesized by the reaction of dianhydrides with diamines, for example, pyromellitic anhydride with ''p''-phenylenediamine. It can also be accomplished using diisocyanates in place of diamines.