Chrome free composition for metal surface treatment and...

C - Chemistry – Metallurgy – 23 – C

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C23C 22/06 (2006.01)

Patent

CA 2592476

A chrome free composition for metal surface treatment and a surface-treated metal sheet can provide excellent characteristics of high conductivity, corrosion resistance, alkali resistance, and high temperature and humidity resistance. The composition includes a vinyl based binder resin, an acryl based binder resin, and a solvent. In the vinyl based binder resin, a corrosion-resistant inorganic material is combined, and an amount of the vinyl based binder resin is in a range of 10 weight % to 70 weight % with respect to a total solid content. In the acryl based binder resin, a corrosion-resistant inorganic material is combined, and an amount of the acryl based binder resin is in a range of 15 weight % to 75 weight % with respect to the total solid content. An amount of the corrosion resistance inorganic material is in a range of 3 weight % to 25 weight % with respect to a total solid content.

Invention concernée composition exempte de chrome destinée au traitement des surfaces métalliques, et une feuille de tôle à surface traitée présentant une conductivité élevée, une résistance élevée à la corrosion, aux alcalins, à l'humidité et une bonne résistance thermique. Cette composition contient une résine liante vinylique, une matière inorganique résistant à la corrosion, et un solvant. Dans la combinaison résine liante vinylique et matière inorganique résistant à la corrosion, la proportion de résine liante vinylique est comprise entre 10 % en poids et 70 % en poids par rapport au total des matières solides, et la proportion de matière inorganique résistant à la corrosion est comprise entre 3 % en poids et 25 % en poids par rapport au total des matières solides.

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