A polyimide resin having a basic skeleton represented by the following general formula:
(in the formula (1), each of Ar1 and Ar2 is an aromatic ring having a carbon number of 6-20, which forms an imide ring of 5 or 6 atoms with an imide group adjoining thereto. In the aromatic ring, a part of carbon atoms may be substituted with S, N, O, SO2 or CO, or a part of hydrogen atoms may be substituted with an aliphatic group, a halogen atom or a perfluoro aliphatic group. Ar1 and Ar2 may be same or different. R is at least one of linear alkylene group and branched alkylene group having a carbon number of 1-20. Ar3 is an aromatic ring having a carbon number of 6-20 in which at least a part of hydrogen atoms is substituted with at least one of sulfoalkoxy group, carboalkoxy group and phosphoalkoxy group having a carbon number of 1-20 and a part of carbon atoms in these groups may be substituted with S, N, O, SO2 or CO, or a part of hydrogen atoms may be substituted with an aliphatic group, a halogen atom or a perfluoro aliphatic group. n and m show a polymerization degree and are an integer of not less than 2.)
一种聚
酰亚胺树脂,其基本骨架由以下通式表示:
(在式(1)中,Ar1 和 Ar2 各为碳原子数为 6-20 的芳香环,与毗邻的
酰亚胺基团形成 5 或 6 个原子的
酰亚胺环。在芳香环中,部分碳原子可被 S、N、O、SO2 或 CO 取代,或部分氢原子可被脂肪族基团、卤素原子或
全氟脂肪族基团取代。Ar1 和 Ar2 可以相同或不同。R 至少是碳原子数为 1-20 的直链亚烷基和支链亚烷基中的一种。Ar3 是碳原子数为 6-20 的芳香环,其中至少有一部分氢原子被碳原子数为 1-20 的磺烷氧基、羧烷氧基和
磷烷氧基中的至少一个取代,这些基团中的一部分碳原子可被 S、N、O、SO2 或 CO 取代,或者一部分氢原子可被脂肪族基团、卤素原子或
全氟化脂肪族基团取代。n 和 m 表示聚合度,是不小于 2 的整数。)