| abstract |
(57) [Summary] [Objective] A resin composition having a large hardness of a cured product and having excellent whitening resistance, heat resistance, acid resistance, alkali resistance, solvent resistance, and gold plating resistance, and the same Provide a cured product. [Composition] Epoxy resin with specific structure and (meta) A resin composition containing an unsaturated group-containing polycarboxylic acid resin which is a reaction product of a reaction product of acrylic acid with a polybasic carboxylic acid or an anhydride thereof, a solder resist resin composition, and a cured product thereof. |