Patent ID: 9636703
Date: 2017-05-02
CPC Classifications: B05D,C08F,C08G,C09D,Y10T

Claim:
1. A method for forming a multilayer coating film comprising: applying one or more base coating compositions (Y) in at least one layer to a substrate to form a base coating film in at least one layer; applying one or more clear coating compositions (Z) to the above uncured base coating film formed in at least one layer; and simultaneously curing the at least one layer of uncured base coating film and the above uncured clear coating film, wherein the one or more clear coating compositions (Z) comprises: a hydroxy-containing acrylic resin (A) having a hydroxy value in the range of 85 to 215 mg KOH/g, a polyisocyanate compound (B) having a viscosity at 25° C. in the range of 200 to 4,000 mPa·s, an organometallic catalyst (C) containing a metallic compound (C1) in which the metal is a member selected from the group consisting of zinc, tin, zirconium, bismuth, lead, cobalt, manganese, titanium, aluminum and molybdenum, and an amidine compound (C2), and an organic solvent, wherein the equivalent ratio (NCO/OH) of isocyanate groups in the polyisocyanate compound (B) to hydroxy groups in the hydroxy-containing acrylic resin (A) is in the range of 0.8 to 1.8.