| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyimide having exceptional solvent solubility (solvent processability), a solution comprising the polyimide, and a polyimide film obtained by applying and drying the same and having high heat resistance, low linear thermal expansion coefficient and high transparency at the same time.SOLUTION: The present invention provides a polyimide solution in which a polyimide copolymer having a repeating unit represented by formula (1) and a repeating unit represented by formula (2) is stable at room temperature, and a polyimide film obtained by applying and drying the same.SELECTED DRAWING: None |
