A series of Copolyimides, derived from hexamethylene diamine ( HMD ) , 4,4? ? - diaminodiphenyl ether ( ODA ) and 3,3? ?, 4,4? ? - oxydiphthalic dianhydride ( ODPA ), were prepared.

采用二苯醚3,3, ′4, 4′-四 甲酸 二酐与己二胺和4, 4′-二氨基二苯醚为 单体 合成聚酰胺酸, 经热酰亚胺化制备共聚型聚酰亚胺.

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