Societe Nouvelle Des Couleurs Zinciques

Christelle Berteloot

Ludovic Mavel

Jérôme Bibette

Damien Demoulin

Alexander Gibb

Vincent Ernst

An anticorrosive pigment comprising an aluminum polyphosphate comprises at least one cerium-based compound and/or one lanthanum-based compound and/or one praseodymium-based compound. An anticorrosive paint incorporating the pigment is also provided.

Anti-corrosion pigments made of aluminium polyphosphate and rare earth

A composition to cover a metal surface comprises an organic continuous phase comprising at least one anticorrosive pigment, and a hydrophilic phase dispersed in the organic continuous phase, the hydrophilic phase comprising a chemical agent for the surface treatment of the metal surface. The surface treatment chemical agent can advantageously be cerium nitrate. A process for the manufacture of a composition according to the present invention is provided.

Composition comprising a continuous organic phase and a water-in-oil emulsion for covering a metal surface, and method for producing said composition

A detoxification method for obtaining a pigment compound free from acute and chronic aquatic ecotoxicity by mixing at least one zinc-based component with good anti-corrosive properties but high toxicity-with a phosphate or hydrogen phosphate of a magnesium, sodium, potassium, calcium, strontium, aluminum, ammonium, or organic type or any other compound based on such cations, such as carbonates, oxides, silicates, phosphites, pyrophosphates or phosphonates, said phosphates or hydrogen carbonates or carbonates or oxides or silicates or phosphites or pyrophosphates freed from toxicity enabling a very considerable reduction of the toxic power of said zinc-based component, while maintaining the good anti-corrosive properties thereof.

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Fenain, France

Christelle Berteloot