| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyimide film based on a 3,3',4,4'-biphenyltetracarboxylic acid component and p-phenylenediamine, high in productivity, causing no cloudiness and having good transparency. SOLUTION: A solution is prepared by adding an imidating catalyst to a solution of a polyimide precursor, which is based on a 3,3'4,4'-biphenyltetracarboxylic dianhydride and p-phenylendiamine, in a polar organic solvent if necessary and cast on a support to be brought into contact with an alcohol being liquid at the normal temperature. Thereafter, the self-supporting film of polyamic acid peeled from the support is heated and dried to manufacture the imidated polyimide film. COPYRIGHT: (C)2005,JPO&NCIPI |
