| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat-fusible polyimide film excellent in heat resistance and adhesiveness to metal, a production method of the heat-fusible polyimide film, and a polyimide metal laminate using the heat-fusible polyimide film.SOLUTION: A heat-fusible polyimide film is a multilayer film including a heat-fusible polyimide layer and a heat-resistant polyimide layer laminated in contact with the heat-fusible polyimide layer. The heat-fusible polyimide layer contains 50 mol% or more of 3,3',4,4'-biphenyl tetracarboxylic dianhydride in the entire tetracarboxylic acid dianhydride component, and contains over 50 mol% of 2,2-bis[4-(4-aminophenoxy)phenyl]propane in the entire diamine; and the heat-resistant polyimide layer contains 50 mol% or more of 3,3',4,4'-biphenyl tetracarboxylic dianhydride in the entire tetracarboxylic acid dianhydride component. The film shows a peel strength of 0.5 N/mm or more measured by the method of JIS C6471.</p> |
