C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/34 (2006.01) C23G 1/06 (2006.01) C23G 1/10 (2006.01)
Patent
CA 2216462
The invention concerns an aqueous corrosion-protective cleaning solution for tin-plated steel, in particular for tin-plated steel cans, the solution containing complex fluorides of the elements boron, titanium, zirconium and/or hafnium, non-ionic surfactants and corrosion inhibitors and having a pH within the range 3 to 6. The invention also concerns an aqueous concentrate for preparing the solution by dilution with water and a method of cleaning tin- plated steel cans using the solution.
La présente invention concerne une solution aqueuse de nettoyage anticorrosion pour acier étamé, notamment pour boîtes en fer blanc. Cette solution, qui se caractérise par un pH compris entre 3 et 6, contient des fluorures complexes des éléments suivants: bore, titane, zirconium et/ou hafnium, des tensio-actifs non ioniques et des inhibiteurs de corrosion. L'invention porte aussi sur un concentré aqueux servant à la préparation de cette solution par dilution avec de l'eau, ainsi que sur une méthode de nettoyage des boîtes en acier étamé.
Henkel Kommanditgesellschaft Auf Aktien
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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