| abstract |
Polyimide film manufactured by reaction of the tetracarboxylic-acid component containing 3,3 ', 4,4'-biphenyl tetracarboxylic dianhydride as a main component, and the diamine component containing p-phenylenediamine as a main component After heating at the temperature of 460 degreeC-550 degreeC, water or alkaline aqueous solution is sprayed and surface-treated on the surface of a polyimide film, and adhesiveness is improved, maintaining the original outstanding characteristic which a polyimide film has. |