| abstract |
An undercoating composition and a coating composition that can form an undercoating film having moderate adhesive strength and excellent polishing properties, and that can reduce the time required for the entire coating process including the topcoating process in the next step. Provide repair painting methods that had been. A main component (I) containing a lactone-modified acrylic polyol (A1), a pigment composition (B1) and an organic solvent (C1), an acrylic polyol (A2), a pigment composition (B2), and an organic solvent (C2). And a polyol component (II) containing a polyester polyol (D) and a curing agent component (III) containing a polyisocyanate compound, (B1) containing talc, and the content of talc is (A1) solid A multi-component organic solvent-based undercoating composition which is present in 50 to 300 parts based on 100 parts per minute, and (B1) is located in 50 to 500 parts based on 100 parts of (A) solid content. [Selection figure] None |