초록 ▼

A coating method is disclosed, which comprises coating a base coating paint on a substrate, coating thereon a clear coating paint of a curing system different from that of the base coating paint in a wet-on-wet state, and then baking the resultant coatings, wherein a curing catalyst for curing the c

A coating method is disclosed, which comprises coating a base coating paint on a substrate, coating thereon a clear coating paint of a curing system different from that of the base coating paint in a wet-on-wet state, and then baking the resultant coatings, wherein a curing catalyst for curing the clear coating paint is incorporated into the base coating paint and wherein the curing catalyst has a boiling point of 150.degree. C. or higher under 760 mmHg. The base coating paint comprising such a curing catalyst is also disclosed.

대표청구항 ▼

[ What is claimed is:] [1.] A base coating paint composition comprising a hydroxy group-containing oligomer and an aminoplast resin which together are curable upon being subjected to heat, said composition further containing a basic curing catalyst having a boiling point of 150.degree. C. or higher

[ What is claimed is:] [1.] A base coating paint composition comprising a hydroxy group-containing oligomer and an aminoplast resin which together are curable upon being subjected to heat, said composition further containing a basic curing catalyst having a boiling point of 150.degree. C. or higher under 760 mm Hg and a molecular weight of from about 100 to about 400, wherein said basic curing catalyst has no function of accelerating the reaction between said hydroxy group-containing oligomer and said aminoplast resin during curing thereof, and rein said basic curing catalyst is present in said base coating paint composition for the purpose of acting as a curing catalyst for a clear coating paint to be coated in a wet-on-wet state on said base coating paint composition, with the two coatings being subsequently baked, and with said basic curing catalyst contained in said base coating paint migrating into said clear coating paint and functioning as a basic curing catalyst to effect curing of the clear coating paint during the baking.