Patent ID: 9427779
Filing Date: 2016-08-30
CPC Classification: B05D,C08G,C09D,Y10T

Claim Text:
1. A method of forming a multilayer coating film comprising the following steps 1-1 to 1-4: step 1-1: a step of coating an article to be coated with a primer coating composition (X) and forming an uncured primer coating film on the article to be coated, step 1-2: a step of coating the article to be coated having the uncured primer coating film with an aqueous colored coating composition (Y step 1-3: a step of coating the article to be coated having the uncured primer coating film and uncured base coat coating film, with a clear coating composition (Z), and forming an uncured clear coating film thereover, and step 1-4: a step of curing the uncured primer coating film, the uncured base coat coating film and the uncured clear coating film by heating them, wherein the aqueous colored coating composition (Y wherein R blocked isocyanate groups represented by the following formula (II): wherein R and blocked isocyanate groups represented by the following formula (III): wherein R