Patent ID: 6797801
Filing Date: 2004-09-28
Classification: B29C,B29D,B29K,C08J,Y10T

Abstract:
A polyimide film which comprises a polyimide consisting essentially of a diamine component and a tetracarboxylic acid component, the diamine component comprising a p-phenylenediamine component whose amount is more than 80 mol % to 100 mol % and an aromatic diamine component other than p-phenylenediamine whose amount is 0 mol % to less than 20 mol % and the tetracarboxylic acid component comprising pyromellitic acid whose amount is more than 80 mol % and an aromatic tetracarboxylic acid component other than pyromellitic acid whose amount is 0 mol % to less than 20 mol %, and in which two directions each having a Young's modulus of higher than 10 GPa and perpendicular to each other are present in a film plane.