Patent 9018321 was granted and assigned to AJINOMOTO CO., INC. on April, 2015 by the United States Patent and Trademark Office.
Resin compositions which contain a compound having at least two epoxy and/or thiirane groups in the molecule (ingredient (1)) and a specific ionic liquid (ingredient (2)), as combined, are practicable resin compositions which comprise constitutive elements of readily available materials and have well-balanced suitable curing capability and storage stability. Preferably, the ionic liquid (ingredient (2)) comprises a combination of an ammonium cation or phosphonium cation and a carboxylate anion.