Patent ID: 9650543
Date: 2017-05-16
CPC Classifications: C08G,C09D

Claim:
1. A polyimide precursor composition, comprising: a resin having a repeating unit represented by the following general formula (I), an organic tertiary amine compound, and a surfactant dissolved in a water-based solvent including water: in the general formula (I), A represents a tetravalent organic group derived from the group consisting of 3,3′,4,4′-biphenyltetracarboxylic dianhydride, pyromellitic dianhydride, benzophenone tetracarboxylic dianhydride, and cyclobutane-1,2,3,4-tetracarboxylic dianhydride, and B represents a divalent organic group derived from the group consisting of 4,4′-diaminodiphenyl ether, p-phenylenediamine, and 1,6-cyclohexane diamine, wherein the surfactant is a cationic surfactant, wherein the cationic surfactant is a quaternary ammonium salt represented by the following general formula (II): in the general formula (II), X represents a chlorine atom or a bromine atom, and each of R wherein the organic tertiary amine compound is present in an amount of 30 to 500 mol % with respect to the carboxyl group included in the polyimide precursor composition, and wherein the cationic surfactant is present in an amount of 0.001 to 0.1% by mass with respect to a total mass of the polyimide precursor composition.