| abstract |
(57) [Summary] (Modified) [Purpose] To provide a coating method for automobile bodies with excellent chipping resistance. [Structure] In a coating method in which an electrodeposition coating, a chipping-resistant coating, an intermediate coating, and a top coating are repeatedly applied to the outer panel of an automobile body, (1) the chipping-resistant coating contains (A) a hydroxyl group and has a number average. Molecular weight 500-500 0 epoxy resin (B) containing a hydroxyl group and having a number average molecular weight of 400 to 100 A polyester polyol resin of No. 0 and (C) a polyisocyanate compound in which an isocyanate group is blocked, This is a coating method in which the coating composition is applied in a dry film thickness range of 25 to 150 μm, dried so that the coating gel fraction of the chipping resistant coating composition is in the range of 70 to 100%, and then an intermediate coating composition is applied. |