Patent ID: 9095875
Filing Date: 2015-08-04
Classification: B05D,Y10T

Abstract:
1. A method for forming a multilayer coating film by sequentially performing the following steps (1) to (4): (1) applying an aqueous first colored coating composition (X) comprising a film-forming resin (A) and a pigment (B) to a substrate to form an uncured first colored coating film, (2) applying an aqueous second colored coating composition (Y) comprising a film-forming resin (C) and a copolymer (D) to the uncured colored coating film obtained in step (1) to form an uncured second colored coating film, (3) applying a clear coating composition (Z) to the uncured second colored coating film obtained in step (2) to form an uncured clear coating film; and (4) heating the uncured first colored coating film, the uncured second colored coating film, and the uncured clear coating film formed respectively in steps (1) to (3) for 10 to 60 minutes at 80° to 180° C. to simultaneously cure these three coating films, wherein the clear coating composition (Z) is an organic-solvent-type thermosetting coating composition which contains a curing agent and a base resin having a crosslinkable functional group, an aqueous thermosetting coating composition which contains a curing agent and a base resin having a crosslinkable functional group, or a powder thermosetting coating composition which contains a curing agent and a base resin having a crosslinkable functional group.