| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyimide resin that can be suitably used as a coating-forming material for coating an electronic material, especially a conductor circuit pattern and is excellent in the balance of physical properties. SOLUTION: The polyimide resin has a repeating unit consisting of three constitutional formulae of a constitutional formula containing a diphenylsulfone group, a constitutional formula containing a phenylcarbonyl group and a constitutional formula containing a phenylene group or a phenylene derivative group wherein the proportion of the repeating units having three constitutional formulae in the polyimide resin is in a specific range. COPYRIGHT: (C)2008,JPO&INPIT
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