| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel ester-group-containing aromatic diamine used as e.g., a raw material for a very lowly hygroscopic polyesterimide. SOLUTION: The aromatic diamine is represented by formula (1) [wherein when R1 is a hydrogen atom, R2 is an ester group represented by formula (2), and when R1 is an ester group represented by formula (2), R2 is a hydrogen atom, provided that in the formulae, R3 is a 1-4C alkyl group] and its production method is provided. COPYRIGHT: (C)2008,JPO&INPIT |
