AQUEOUS CURABLE TYPE RESIN

PROBLEM TO BE SOLVED: To obtain an aqueous curable type resin, having a polymerizable unsaturated group and a group containing a specific protonic type ammonium salt, excellent in water resistance and further shelf life and useful as coatings, etc. SOLUTION: This aqueous curable type resin has a polymerizable unsaturated group and a group containing a protonic type ammonium salt of the formula (R1 is methyl or H; R2 and R3 are each a 1-14C organic group or together may form a heterocyclic group together with nitrogen atom to which both are bonded; Z is an anionic residue of a protonic type organic and inorganic acids) in one molecule and contains 0.1-3mol groups containing the ammonium salt/kg resin. Furthermore, the group containing the ammonium salt is preferably obtained by neutralizing a β-aminocarbonyl compound produced by reacting an α,β-unsaturated carbonyl compound (a compound comprising a resin containing epoxy group and an α,β-unsaturated carboxylic acid) with a primary or a secondary amine.