| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: A novel polyimide resin material containing no fluorine atom or phosphorus atom, which is colorless and transparent, A film or coating film using a phenolic solvent and / or aprotic polar solvent solution of polyamic acid, which is an intermediate thereof, and the above resin material is provided. SOLUTION: The acid dianhydride represented by the following formula [1] or [2] is sufficiently purified by sublimation or the like and is reacted with a diamine. A polyimide resin material, an intermediate solution thereof, and a film or coating film using the resin material, in which the area of the transmission part is 70% or more of the total area in the graph of the ultraviolet / visible light absorption spectrum of nm. Embedded image Embedded image |