DICYCLOHEXYL-3, 3', 4, 4'-TETRACARBOXYLIC ACID DIANHYDRIDE-CONTAINING COMPOSITION, AND POLYAMIC ACID AND POLYIMIDE RESIN OBTAINED FROM THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a polyimide resin which enables easy production of a molding because of its high viscosity and ensures high transparency and high film strength, and a tetracarboxylic acid anhydride useful as a starting material of the polyimide resin. SOLUTION: A dicyclohexyl-3, 3', 4, 4'-tetracarboxylic acid dianhydride-containing composition is provided which contains≥99.0 wt.% of a dicyclohexyl-3, 3', 4, 4'-tetracarboxylic acid dianhydride. COPYRIGHT: (C)2011,JPO&INPIT