abstract |
Kind Code: A1 An alkali-soluble photo-curing / thermosetting resin composition having excellent flexibility, low warpage after curing, and having well-balanced properties in terms of developability, photocurability, and plating resistance. And a cured product thereof. A photo-curable / thermo-curable resin composition comprises (A) a bisphenol-type polyfunctional epoxy resin (a), a reactant with an unsaturated monocarboxylic acid (b), and a saturated and / or unsaturated compound. An unsaturated monocarboxylic acid (b) is added to a photocurable resin obtained by reacting a polybasic acid anhydride (c) and (B) a polyfunctional epoxy compound (a ') having regular repetition by an ester bond. And (C) a photopolymerization initiator, (D) an epoxy curing catalyst, and (E) a photocurable resin obtained by reacting a reaction product of (c) with a saturated and / or unsaturated polybasic acid anhydride (c). It contains a diluent and (F) an epoxy compound having two or more epoxy groups in one molecule. [Selection diagram] None |