Patent ID: 9505886
Filing Date: 2016-11-29
CPC Classification: C08G

Claim Text:
1. A polyimide precursor composition, comprising: a polyamic acid including a condensation polymer of a tetracarboxylic dianhydride containing 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; and a first aqueous solvent containing water and at least one water-soluble organic solvent selected from the group consisting of a water-soluble ether solvent, a water-soluble ketone solvent, and a water-soluble alcohol solvent, or a second solvent containing a water-soluble alcohol solvent and at least one water-soluble organic solvent selected from the group consisting of a water-soluble ether solvent and a water-soluble ketone solvent, wherein: