Aqueous lubricant and surface conditioner for formed metal...

C - Chemistry – Metallurgy – 23 – G

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C23G 1/22 (2006.01) B08B 3/08 (2006.01) C11D 1/65 (2006.01) C11D 3/04 (2006.01) C11D 3/20 (2006.01) C11D 11/00 (2006.01) C11D 1/34 (2006.01) C11D 1/62 (2006.01)

Patent

CA 2199142

The coefficient of friction of aluminum can surfaces after alkaline cleaning and drying can be substantially reduced by adding to the alkaline cleaner a mobility-enhancing additive, preferably a surface active quaternary ammonium salt with hydroxyethyl substituents on the quaternary nitrogen atoms. A can surface suitable for automatic conveying and high quality lacquer or printing ink adhesion can thereby be obtained, if desired, without including any substantial fluoride content in any treatment stage.

Le coefficient de friction des surfaces des boîtes en aluminium après nettoyage et séchage à l'aide d'un agent alcalin peut être considérablement abaissé en ajoutant à l'agent de nettoyage alcalin un additif renforçant sa mobilité, de préférence un sel d'ammonium quaternaire tensioactif avec des substituents hydroxyéthyles sur les atomes d'azote quaternaires. Il est ainsi possible d'obtenir une surface de boîte se prêtant au transfert automatique et présentant une haute qualité d'adhésion de la laque ou de l'encre d'impression, sans ajouter, si on le désire, aucune quantité appréciable de fluorure à aucun stade du traitement.

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