C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/08 (2006.01) B05D 7/16 (2006.01) C09D 5/00 (2006.01) C25D 11/18 (2006.01)
Patent
CA 2214822
A process for improving the adherence of paint applied by thin-film anodic oxidation is characterised in that the anodically oxidised metal surfaces are brought into contact with an aqueous solution containing one or more of the following components: (a) 200 to 2000 ppm of a homopolymer or copolymer of acrylic acid, methacrylic acid and/or their esters; (b) 200 to 3000 ppm of a poly(vinylphenol) compound in which at least part of the phenol rings carry an alkylamino substituent; (c) 200 to 3000 ppm hexafluorotitanic acid, hexafluorozirconic acid and/or their anions.
Ce procédé qui permet d'améliorer l'adhérence d'une peinture ou d'un vernis appliqué(e) par anodisation en couche mince se caractérise en ce que l'on met les surfaces métalliques anodisées en contact avec une solution aqueuse qui contient un ou plusieurs des constituants suivants: (a) 200 à 2000 ppm d'un homopolymère ou d'un copolymère d'acide acrylique et/ou d'acide méthacrylique et/ou de leurs esters; (b) 200 à 3000 ppm d'un composé de poly(vinylphénol), au moins une partie des cycles phénol portant un substituant alkylamino; (c) 200 à 3000 ppm d'acide hexafluorotitanique et/ou hexafluorozirconique ou leurs anions.
Nowak Andreas
Roland Wolf-Achim
Henkel Kommanditgesellschaft Auf Aktien
Swabey Ogilvy Renault
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