Coating composition thermally cured at low temperature, multilayer coating film forming method and multilayer coating film

摘要

PROBLEM TO BE SOLVED: To provide a thermosetting coating material composition being a baking type coating material which is thermally cured at a low temperature and to provide a method for forming a multilayer coating film.SOLUTION: The thermosetting coating material composition includes at least components (I), (II) and (III) as given below: (I) a thermosetting acrylic resin having a number average molecular weight of 2,000 to 10,000 and having a hydroxyl value of 70 to 120 mgKOH/g; (II) an n-butyl etherified melamine resin having a number average molecular weight of 1,000 to 1,500 and having an imino group and a methylol group; and (III) an organophosphate represented by the following formula (Ris a 1-10C alkyl group; and Ris H or a 1-10C alkyl group)SELECTED DRAWING: None