Dai Nippon Toryo Co., Ltd.

Toru Taki

Kazuyoshi Tsuneta

Osamu Ogawa

Kenji Hasui

Takashi Matsuda

The present invention provides an environmentally pollution-free, anti-corrosive pigment composition which is free of any heavy metal such as lead and/or chromium, which is free of zinc and/or water-soluble ions and which is excellent in the anti-corrosive effect. The anti-corrosive pigment composition comprises condensed calcium phosphate prepared by firing a mixture which comprises a calcium-containing component and a phosphorus-containing component and in which the molar ratio (Ca/P=m) of calcium to phosphorus present in these components falls within the following range: 0.50&#x3c;m&#x3c;1.00, at a temperature ranging from 180 to 350&#xb0; C.

Environmentally pollution-free anti-corrosion pigment composition

A method for forming a metal spray coating, which comprises coating on a substrate to be metal-sprayed, one pack type cold self-crosslinking resin aqueous dispersion containing insoluble solid particles having an average particle size of from 5 to 200 .mu.m, to form a primer layer having a rough surface, and then spraying a metal on the primer layer.

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Tochigi, Japan

Toru Taki