| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new polyimide which is clear and colorless, has excellent heat resistance and low coefficient of linear expansion, and also is excellent in tenacity, and to provide a method for producing the same. Ž<P>SOLUTION: The polyimide contains a constitutional unit represented by the formulae (I) and (II). In the formula (I), R represents H or CH<SB>3</SB>. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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