NOVEL CARBOXYLIC ACID ANHYDRIDES, AMINE COMPOUNDS, POLYIMIDE RESIN, AND PROCESS FOR THE PRODUCTION OF THESE

摘要

Azoic carboxylic acid anhydrides of general formula (A-Ia) and amine compounds of general formula (B-Ia): [wherein L is hydrogen or the like; X<2> is N or CR<3> (R<3> being hydrogen or the like); and n is an integer of 2 to 20]; and a polyimide resin containing at least one of the acid anhydrides and amine compounds and is useful as a rubbingless liquid-crystal alignment film.