C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/78 (2006.01) B05D 3/10 (2006.01) C23C 22/56 (2006.01)
Patent
CA 2426931
A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in treating the metal surface prior to application of the organic coating. The adhesion promoting composition comprises a nitro sulfonic acid. A chromating step is optionally employed.
La présente invention concerne un procédé permettant d'augmenter l'adhésion de revêtements organiques sur des surfaces métalliques, en particulier l'aluminium et les alliages d'aluminium. Ledit procédé consiste en l'utilisation d'une composition favorisant l'adhésion dans le traitement de la surface métallique avant application du revêtement organique. La composition favorisant l'adhésion comprend un acide nitro sulfonique. On a éventuellement recours à une étape de chromatage.
Jenkins Melvin R.
Wojcik Gerald
Gowling Lafleur Henderson Llp
Macdermid Incorporated
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