CPC C08G 59/4042 (2013.01) [C08G 59/022 (2013.01); C08G 59/22 (2013.01); C08G 59/32 (2013.01); C08G 59/4238 (2013.01); C08J 5/04 (2013.01); C08J 5/249 (2021.05); C08L 63/00 (2013.01); C08J 2367/00 (2013.01); C08L 2201/08 (2013.01); C08L 2203/20 (2013.01)] | 10 Claims |
1. An epoxy resin solution containing at least a curing agent and an epoxy resin mixed in an organic solvent, wherein the curing agent comprises an imide group-containing curing agent,
wherein the imide group-containing curing agent is a diimide dicarboxylic acid-based compound having a structure of following general formula (1),
wherein a total formulating amount of the imide group-containing curing agent and the epoxy resin is from 50 to 70% by mass based on a total amount of the epoxy resin solution, and
wherein a reaction rate of a glycidyl group contained in the epoxy resin in the epoxy resin solution is 10% or less,
in the general formula (1), X1 and X2 each independently represent a structure derived from an aromatic tricarboxylic acid anhydride component, an alicyclic tricarboxylic acid anhydride component, or an aliphatic tricarboxylic acid anhydride component; and R1 represents a structure derived from an aromatic diamine component containing 1 to 2 aromatic rings, an alicyclic diamine component, or an aliphatic diamine component.
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9. A prepreg, wherein the epoxy resin solution of claim 1 is impregnated into or applied to a reinforcing fiber cloth.
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10. A laminated body, comprising the prepreg of claim 9 being laminated.
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