Metal surface treatment agent, and metal material coated with same

Abstract

A metal surface treatment agent containing the following components (A) to (D), which securely adheres to a metal substrate such as aluminum, exhibits excellent corrosion preventive properties, even with a thin film thickness, and has excellent plasticity and adhesion to paints. (A) at least one organosilicon compound having three carbonyl groups and at least one alkoxysilyl group, the organosilicon compound being present in a weight ratio of 5 to 15, based on the total of the components (A) to (D) being 100; (B) at least one epoxy resin modified with an alkanolamine, the modified epoxy resin being present in a weight ratio of 10 to 30 relative to the above total; (C) at least one blocked polyisocyanate present in a weight ratio of 50 to 70 relative to the above total; and (D) at least one amino resin present in a weight ratio of ratio 5 to 15 relative to the above total.

Dependencies are inferred from the claim text.