C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 1/12 (2006.01) C11D 3/02 (2006.01) C23G 1/22 (2006.01)
Patent
CA 2514225
The present invention discloses an improved cleaning composition for cleaning metal surfaces such as aluminum and aluminum-containing alloys. The cleaning composition of the present invention comprises water and an ethoxylate of an alcohol having Formula R1,-OH wherein R1, is a saturated or unsaturated, straight-chain or branched aliphatic having from 12 to 80 carbon atoms; an inorganic pH adjusting component; and at least one surfactant that is different than the ethoxylate set forth above. The cleaning composition of the present invention also has an average water-break-free percent reduction of less than 50% after 7 days aging of a working composition prepared from the cleaning composition. The present invention also provides a method of cleaning a metal surface with the cleaning composition of the invention.
La présente invention concerne une composition nettoyante améliorée destinée à nettoyer des surfaces de métaux, tels que l'aluminium ou des alliages contenant de l'aluminium. La composition nettoyante de l'invention comprend: de l'eau et un éthoxylate d'un alcool de la formule R¿1?-OH, dans laquelle R¿1? est un alcool aliphatique saturé ou insaturé à chaîne droite ou ramifiée présentant 12 à 80 atomes de carbone; un constituant inorganique d'équilibration du pH; et au moins un tensioactif différent de l'éthoxylate décrit plus haut. La composition nettoyante de l'invention présente également une réduction du taux moyen d'exemption de rupture du film d'eau inférieur à 50 % après vieillissement de 7 jours d'une composition de travail préparée à partir de la composition nettoyante. L'invention concerne en outre une méthode de nettoyage d'une surface métallique avec la composition nettoyante de l'invention.
Banaszak Richard D.
Hatch Andrew M.
Rochfort Gary L.
Henkel Ag & Co. Kgaa
Henkel Kommanditgesellschaft Auf Aktien
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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