PRODUCTION OF POLYIMIDE RESIN PRECURSOR, COMPOSITION CONTAINING THE SAME, PRODUCTION OF PHOTOCONDUCTIVE POLYIMIDE, LIQUID CRYSTAL ORIENTED MEMBRANE OR THE LIKE USING THE PHOTOCONDUCTIVE POLYIMIDE

摘要

PURPOSE: To obtain the subject precursor capable of giving a polyimide applicable to optical sensor, etc., without adding a donor, etc., by reaction of a diamine compound containing a specific structure with a specific aromatic anhydride followed by dehydrating cyclization through heating or chemical treatment. ;CONSTITUTION: This precursor is obtained by reaction of (A) a diamine compound containing a structure of the formula [R₁ and R₂ are each a (halo)methyl or (substituted) phenyl; R₃ and R₄ are each a monovalent hydrocarbon or halogen] {pref. 2,2-bis[4-(4-aminophenoxy)phenyl]propane} with (B) an aromatic tetrabasic dianhydride (pref. pyromellitic dianhydride).;COPYRIGHT: (C)1996,JPO