Nippon Paint Compnay, Ltd.

Takashi Yamamoto

Toshihiro Okai

Mitsuyuki Oda

Yoshiaki Okumura

Teruaki Kuwajima

Hideo Fukuda

Masahiro Jinnouti

Hiroshi Amako

Disclosed is a corrosion preventive coating composition comprising;

Corrosion preventive coating composition

Disclosed is a corrosion preventive pigment consisting essentially of

Corrosion preventive pigment comprising a phosphate source, a vanadium

Disclosed is a metal particle having a maximum dimension of not more than 1 mm surface-treated with an aqueous solution containing phosphate ions, soluble ions of vanadium and oxygen. This particle can be a metallic pigment having excellent brightness retention and wetting properties to a binder resin.

Aluminum flake pigment

There is herein provided a coating composition for controlling hydrogen embrittlement of a steel which contains 1 to 500 percent by weight of a metal oxide selected from the group consisting of manganese dioxide, vanadium pentoxide and molybdenum trioxide based on 100 percent by weight of resin solids.

Coating composition for controlling hydrogen absorption

A method for obtaining electrochemical information significant for corrosion evaluations of a coated metallic material and an apparatus for automatically performing the method. The electrochemical information is detected and stereoscopically displayed to show respective features of any kind of corrosions. The above-described apparatus is arranged to constitute a system which can automatically electrochemically measure the corrosion preventing performance of the coated film in any kind of corrosive medium.

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Souraku, Japan

Takashi Yamamoto