Patent ID: 9550862
Date: 2017-01-24
CPC Classifications: C08G

Claim:
1. A polyimide precursor composition, comprising: a polyimide precursor including a condensation polymer of a tetracarboxylic dianhydride composed of a first tetracarboxylic dianhydride having a benzene ring to which two carboxylic anhydride groups are bonded and a second tetracarboxylic dianhydride other than the first tetracarboxylic dianhydride, and a diamine compound; a tertiary amine compound; and a water-soluble solvent consisting only of water, wherein the polyimide precursor and the tertiary amine compound are dissolved in the water-soluble solvent, and wherein the second tetracarboxylic dianhydride is 3,3′,4,4′-biphenyltetracarboxylic dianhydride.