Nippon Paint Compnay, Ltd.

Tomoyuki Kanda

Yasuhiro Shibata

Kiyotada Yasuhara

Atsuhiko Tounaka

Susumu Maekawa

Toshiaki Shimakura

A metal surface treatment composition is provided which improves corrosion resistance and film adhesion, and confers slip properties. This composition is an acrylic resin-containing metal surface treatment composition which is water-soluble, water-dispersible or emulsifiable, which comprises an acrylic resin, this resin comprising either or both of an amino group and an ammonium group together with a hydroxyl group and a hydrophobic group, and which further comprises a heavy metal or one of its salts.

Acrylic metal surface treatment composition with hydroxy and amino/ammonium functionality

Metal surface treatment composition containing an acrylic resin

A surface-treated metal material wherein a film comprising an organic polymer compound having 5-100 mg of carbon per m.sup.2 and a phosphoric acid compound having 1-30 mg of phosphorus per m.sup.2 is formed on a metal surface, the ratio C/P of carbon atoms C to phosphorus atoms P in the film lying within the range 2-25.

Surface-treated metal material and metal surface treatment method

Growing community of inventors

Kamakura, Japan

Tomoyuki Kanda