Abstract:
A poly(amide-imide) copolymer that is a reaction product of a diamine represented by Chemical Formula 1, a diamine represented by Chemical Formula 2, a dicarbonyl compound represented by Chemical Formula 3, and a tetracarboxylic acid dianhydride represented by Chemical Formula 4: wherein, in Chemical Formulae 1 to 4, L1, R1 to R3, R10, R12, R13, a, b, c, d, A, X, n7 and n8 are the same as defined in the specification.
Abstract:
A poly(amide-imide) copolymer that is a reaction product of a diamine represented by Chemical Formula 1, a diamine represented by Chemical Formula 2, a dicarbonyl compound represented by Chemical Formula 3, and a tetracarboxylic acid dianhydride represented by Chemical Formula 4: wherein, in Chemical Formulae 1 to 4, L1, L2, Ra to Rd, R2, R3, R10, R12, R13, n7 and n8, and X are the same as defined in the specification.
Abstract:
A composition for preparing a polyimide including a tetracarboxylic dianhydride mixture including a tetracarboxylic dianhydride represented by Chemical Formula 1A, Chemical Formula 1B, or a combination thereof, a tetracarboxylic dianhydride represented by Chemical Formula 2, and a diamine represented by Chemical Formula 3: NH2—R1—NH2 Chemical Formula 3 wherein in Chemical Formulae 1A, 1B, 2 and 3, definitions of groups and substituents are described in the specification.