Readily processable polyimide and preparation process of same

摘要

A readily melt processable polyimide obtained by reacting diamine represented by the formula: 4,4' <IMAGE> wherein n is an integer of 1 or 2, with 3,3'4,4' -diphenylethertetracarboxylic dianhydride and/or 4,4' -(p-phenylenedioxy)diphthalic dianhydride or a mixture of these tetracarboxylic acid dianhydrides and pyromellitic dianhydride in the presence of phthalic anhydride.