AQUEOUS SOLVENT SOLUTION OF POLYIMIDE PRECURSOR AND ORIENTED LIQUID CRYSTAL FILM

摘要

PROBLEM TO BE SOLVED: To provide an aqueous solvent solution of a polyimide precursor free from polyamic acid. SOLUTION: The aqueous solvent solution of a polyimide precursor is produced by dissolving a compound expressed by general formula (1) (R1 is a bivalent organic group) and a compound expressed by general formula (2) (R2 is a tetravalent organic group; R3 and R4 are each H or a 1-12C alkyl) in an aqueous solvent.