Resin curable with actinic energy ray, photocurable and thermosetting resin composition containing the same, and cured product obtained therefrom

A photocurable and thermosetting resin composition capable of being developed with an aqueous alkaline solution, comprising:

• an actinic energy ray-curable resin obtained by reacting an unsaturated monocarboxylic acid with a terminal epoxy group of an epoxy resin having an unsaturated group and a hydroxyl group in side chains and an epoxy group in a terminal and further reacting a polybasic acid anhydride with the hydroxyl group of said epoxy resin;
• a photopolymerization initiator;
• a diluent;
• and
• a cyclic ether compound containing two or more epoxy groups and/or oxetanyl groups in a molecule,
• wherein said epoxy resin is a product of the polyaddition reaction of a reaction product of a polybasic acid anhydride and a compound having at least one unsaturated double bond and one alcoholic hydroxyl group in a molecule, a compound having at least two carboxyl groups in a molecule, and a bifunctional epoxy compound and said compound having at least two carboxyl groups in a molecule in said actinic energy ray-curable resin is at least one compound selected from the group consisting of 1,2-cyclohexene dicarboxylic acid, tetrahydrophthalic acid, hexahydrophthalic acid, hexahydroisophthalic acid, and hexahydroterephthalic acid and containing no aromatic ring.

A photocurable and thermosetting resin composition capable of being developed with an aqueous alkaline solution, comprising:

• an actinic energy ray-curable resin obtained by reacting an unsaturated monocarboxylic acid with a terminal epoxy group of an epoxy resin having an unsaturated group and a hydroxyl group in side chains and an epoxy group in a terminal and further reacting a polybasic acid anhydride with the hydroxyl group of said epoxy resin;
• a photopolymerization initiator;
• a diluent;
• and
• a cyclic ether compound containing two or more epoxy groups and/or oxetanyl groups in its molecule,
• wherein said epoxy resin is a product of the polyaddition reaction of a reaction product of a polybasic acid anhydride and a compound having at least one unsaturated double bond and one alcoholic hydroxyl group in a molecule, a compound having at least two carboxyl groups in a molecule, and a bifunctional epoxy compound, and said bifunctional epoxy compound in said actinic energy ray-curable resin is a hydrogenated bifunctional epoxy compound.