申请人:Ube Industries, Ltd.
公开号:US10174166B2
公开(公告)日:2019-01-08
A polyimide precursor comprising a repeating unit represented by the following chemical formula (1):
in which A is a divalent group of an aromatic diamine or an aliphatic diamine, from which amino groups have been removed; and X1 and X2 are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms,
wherein the polyimide precursor comprises at least one type of repeating unit represented by the chemical formula (1) in which A is a group represented by chemical formula (2) or (3):
in which m independently represents 0 to 3 and n independently represents 0 to 3; Y1, Y2 and Y3 each independently represent at least one selected from the group consisting of hydrogen atom, methyl group and trifluoromethyl group; and Q and R each independently represent direct bond, or at least one of —NHCO—, —CONH—, —COO— and —OCO—,
in which Z and W each independently represent a divalent aromatic group having 6 to 18 carbon atoms; and Y4 represents hydrogen atom, or a monovalent organic group.
一种聚酰亚胺前体,包含由以下化学式(1)表示的重复单元:
其中,A 是芳香族二胺或脂肪族二胺的二价基团,其中的氨基已被去除;X1 和 X2 各自独立地是氢、具有 1 至 6 个碳原子的烷基或具有 3 至 9 个碳原子的烷基硅基、
其中聚酰亚胺前体包括至少一种由化学式(1)表示的重复单元,其中 A 是由化学式(2)或(3)表示的基团:
其中 m 独立地代表 0 至 3,n 独立地代表 0 至 3;Y1、Y2 和 Y3 各自独立地代表至少一个选自氢原子、甲基和三氟甲基的基团;以及 Q 和 R 各自独立地代表直接键或 -NHCO-、-CONH-、-COO- 和 -OCO- 中的至少一种、
其中 Z 和 W 各自独立地代表具有 6 至 18 个碳原子的二价芳香基团;Y4 代表氢原子或一价有机基团。