| abstract |
A poly (amide-imide) copolymer having high optical properties and mechanical properties, a composition for producing a poly (amide-imide) copolymer, a shaped article comprising the poly (amide-imide) copolymer, and the shaped article To provide a display device including: A poly is a reaction product of a substituted or unsubstituted linear aliphatic diamine, a specific diamine, a dicarbonyl compound represented by the chemical formula 2, and a tetracarboxylic acid dianhydride represented by the chemical formula 3. (Amide-imide) copolymer. 【Selection chart】 None |