Patent ID: 6538074
Filing Date: 2003-03-25
Classification: C09D,Y10S

Abstract:
A combination of powder coatings usable in a coating method comprising mixing two or more powder coatings of which each color is different, wherein each of said powder coatings fuses with each other and is heat-cured, to thereby give a coating film having a homogenous hue, wherein a difference between a softening point of a powder coating having the highest softening point and a curing initiation temperature of a mixture of said two or more powder coatings is not less than 10Â° C. and not more than 47Â° C., andwherein one powder coating contains one or more resins selected from the group consisting of acrylic resins having one or more members selected from the group consisting of carboxyl groups and amino groups, polyester resins having one or more carboxyl groups, polyester-polyamide resins having one or more members selected from the group consisting of carboxyl groups and amino groups, polyamide resins having one or more members selected from the group consisting of carboxyl groups and amino groups, resins having one or more phenolic hydroxyl groups, and acid anhydride resins having one or more acid anhydride groups; and another powder coating contains one or more resins selected from the group consisting of epoxy resins having one or more epoxy groups, acrylic resins having one or more glycidyl groups, and resins having one or more unsaturated bonds.