Polyphenol compounds and treatment of substrates

Details Polyphenol compounds and treatment of substrates Polyphenol compounds and treatment of substrates

C - Chemistry, Metallurgy

23

C

C23C 22/83 (2006.01) B05D 7/00 (2006.01) C09D 125/18 (2006.01)

Patent

CA 2166485

Chromated aluminum and aluminum alloy surfaces, to improve their corrosion resistance, are treated with composition for treatment and after treatment of surfaces, especially metals, with derivatives of polyphenol compounds that include substituted aminoethyl groups on at least some of the phenyl rings in the polyphenol polymers, with molecular weights within the range of about 700 to about 70,000 being preferred.

On traite des surfaces en alliage d'aluminium ou en aluminium chromé avec une composition de traitement et de post-traitement de surfaces, conçue pour les surfaces métalliques, afin d'en améliorer la résistance à la corrosion. Cette composition contient des dérivés de composés polyphénoliques avec des groupes aminométhyle substitués sur au moins certains des cycles phényliques des polymères polyphénoliques. La masse moléculaire de ces polymères se situe dans la plage préférée allant d'environ 700 à environ 70 000.

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