| abstract |
The invention provides a polyamidamine / imine film, which has a greatly improved machine.nMechanical properties and heat resistance while maintaining transparency. The polyimide and imine have excellent transparency, heat resistance, mechanical strength, and flexibility, and thus can be used in, for example, element substrates, cover substrates for displays, optical films, integrated circuit packages, adhesive films, and multilayer Various fields such as flexible printed circuits, tapes, touch panels, and protective films for optical discs. |