POLYAMIC ACID AND SOLUBLE POLYIMIDE

摘要

PROBLEM TO BE SOLVED: To provide a soluble polyimide which is excellent in solubility in an organic solvent and heat resistance, or to provide a composition comprising the soluble polyimide having those characteristics. SOLUTION: Polyamic acid is obtained by reacting a diaminohydroxypyrimidine with an aromatic tetrabasic acid dianhydride. The soluble polyimide is obtained by imidizing the polyamic acid. COPYRIGHT: (C)2005,JPO&NCIPI