| abstract |
(57) [Problem] A thermosetting coating composition having a storage stability capable of being one-packed and having sufficient curability, despite having a small content of an organic solvent, and a coating composition. Provided is a method for forming a coating film that can reduce the content of an organic solvent in a coating material at the time of coating. A component (a) having two or more active methylene groups and / or active methine groups per molecule, a number average molecular weight of 300 to 3,000, and a number average molecular weight of 200 to 300 0, 2 or more methacrylate groups per molecule and / or Or a component (b) having an acrylate group, a component (c) having an onium salt, a component (d) having an epoxy group and / or a 5-membered carbonate group, and an organic acid, A thermosetting coating material comprising a component (e) which is a phenol or a Lewis acid, wherein the solid content of the coating composition at a viscosity of 100 mPa · s at 20 ° C. is 50% by weight or more. Composition. |