| 摘要 |
A solution containing a silane coupling agent, in which 5% or more of the alkoxy group bound to an Si atom is hydrolyzed, and substantially no water, is applied to one side or both sides of a self-supporting film of a polyimide precursor solution, and then the self-supporting film is heated to effect imidization, thereby providing a polyimide film having a thickness of 7 mum to 30 mum with reliably improved adhesiveness.
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