1.The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate and through a one-step condensation reaction in organic solvent and under the action of catalyst.
第二种酰
合物是
四酸二酐与
二异氰酸酯,在有机溶剂中,在催化剂的作
下,一步法缩合反应制备得到;