| 摘要 |
This paint pretreatment agent for coating-type paint contains (A) one or more metal elements selected from a group consisting of zirconium, titanium and hafnium, (B) fluorine, and (C) one or more coupling agents from an amino group-containing silane coupling agent, a hydrolyzate thereof, and a polymer thereof, and (D) a component comprising at least one of allylamine and polyallylamine, wherein the mass ratio (C/D) of the coupling agent (C) to the component (D) is 1 or greater. This coating-type painting method involves a chemical treatment step in which the paint pretreatment agent is used to chemically treat the metal substrate, and a coating-type painting step in which the chemically treated metal substrate is coated with a coating-type paint. When forming a coating film by means of the coating-type paint on the metal substrate surface which has undergone coating pretreatment, the present invention makes it possible to achieve a coating with excellent adhesion, salt water resistance, and impact resistance. |
