| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyimide film improved in shrinkability to heat, and to provide a method for producing the same. SOLUTION: This polyimide film comprising (1) a polyimide obtained from 1,4-phenylenediamine, 4,4'-diaminodiphenyl ether and pyromellitic dianhydride and (2) inorganic particles having particle diameters in a range of 0.01 to 1.5μm and having an average particle diameter of 0.05 to 0.7μm in an amount of 0.1 to 0.9 wt.% based on the weight of the polyamic acid is characterized in that the polyimide film has a thermal shrinkage percent of≤0.10% at 200°C for one hour, by thermally treating the polyimide film, while constantly holding the longitudinal tension of the film. The present invention further includes a method for producing the polyimide film. COPYRIGHT: (C)2008,JPO&INPIT
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