| abstract |
(57) [Summary] [Object] To provide a one-pack thermosetting resin composition for coatings, which has a Michael addition reaction as a curing mechanism. [Structure] (a) A component having a plurality of α, β-ethylenically unsaturated carbonyl groups in the molecule, (b) A component having a plurality of active methylene groups or active methine groups in the molecule, (C) a quaternary ammonium salt having no catalytic activity by itself, a quaternary phosphonium salt or a tertiary sulfonium salt, And (d) a one-part curable resin composition for coatings, which comprises a 5-membered cyclic carbonate component which is independent or covalently bonded to the component (a) or the component (b). |