| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel polyimide which is transparent and colorless, has excellent heat resistance and a low linear expansion coefficient, and is excellent in toughness; and to provide a method for producing the same. Ž<P>SOLUTION: The polyimide contains a structural unit represented by formula (I). The method for producing the polyimide comprises the steps of: obtaining a polyamic acid; and imidizing the polyamic acid. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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