| abstract |
The present invention includes a copolymer of a diamine compound, a first dicarbonyl compound, and a second dicarbonyl compound component, and comprises 55 to 90 moles of the first dicarbonyl compound with respect to 100 moles of the diamine compound, , The second dicarbonyl compound is included in a ratio of 10 to 45 moles and provides a polyimide-based film with improved surface touch. |