POLYIMIDE RESIN, RESIN COMPOSITION, AND ADHESIVE SHEET

摘要

PROBLEM TO BE SOLVED: To provide a liquid polyimide resin excellent in processability and heat resistance.SOLUTION: A polyimide resin which is liquid at 25°C and has a maleimide group is obtained by reacting (A) a diamine represented by general formula (1), (B) a diamine represented by general formula (2) (except a diamine corresponding to (A) component) and (C) a polyamic acid obtained by reacting a tetracarboxylic acid dianhydride with (D) at least one selected from the group consisting of maleic anhydride and maleic anhydride derivatives. In the formula (1), n represents an integer of 1 to 70. In the formula (2), Rrepresents a divalent group.SELECTED DRAWING: None