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1. (WO2017153075) FLUORIDE-FREE ZIRCONIUM-BASED METAL PRE-TREATMENT FOR PASSIVATION
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Pub. No.: WO/2017/153075 International Application No.: PCT/EP2017/051291
Publication Date: 14.09.2017 International Filing Date: 23.01.2017
IPC:
C23C 22/48 (2006.01) ,C23C 22/53 (2006.01) ,C23C 22/56 (2006.01) ,C23C 22/34 (2006.01)
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22
Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05
using aqueous solutions
06
using aqueous acidic solutions with pH 6
48
not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22
Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05
using aqueous solutions
06
using aqueous acidic solutions with pH 6
48
not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
53
Treatment of zinc or alloys based thereon
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22
Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05
using aqueous solutions
06
using aqueous acidic solutions with pH 6
48
not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
56
Treatment of aluminium or alloys based thereon
C CHEMISTRY; METALLURGY
23
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C
COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
22
Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
05
using aqueous solutions
06
using aqueous acidic solutions with pH 6
34
containing fluorides or complex fluorides
Applicants:
HENKEL AG & CO. KGAA [DE/DE]; Henkelstr. 67 40589 Düsseldorf, DE
Inventors:
RIESOP, Jörg; DE
GEICK, Volker; DE
Priority Data:
10 2016 203 771.408.03.2016DE
Title (EN) FLUORIDE-FREE ZIRCONIUM-BASED METAL PRE-TREATMENT FOR PASSIVATION
(FR) PRÉTRAITEMENT DE MÉTAUX PAR AGENTS À BASE DE ZIRCONIUM ET EXEMPTS DE FLUORURE À DES FINS DE PASSIVATION
(DE) FLUORID-FREIE ZIRKONIUM-BASIERTE METALLVORBEHANDLUNG ZUR PASSIVIERUNG
Abstract:
(EN) The invention relates to a method for the anti-corrosion pre-treatment of metal substrates by using zirconium-based aqueous anti-corrosion agents. The anti-corrosion effect of the zirconium-based agent is based on the presence of polycyclic hydrocarbons that have at least one anellated benzene ring, each having at least two ring-substituted hydroxyl groups in ortho position to each other. The aqueous anti-corrosion agent can be substantially free both of passivating chromium-containing compounds and of fluoride-containing compounds that pickle the metal substrate. According to the invention, pre-treatment by drying (dry-in-place method) is especially advantageous. Accordingly, the method according to the invention is suitable in particular for the pre-treatment of metal strip, wherein excellent anti-corrosion results are achieved on surfaces of aluminum or steel. The invention further relates to a method for producing coated can lids from aluminum strip by using the previously mentioned zirconium-based anti-corrosion agent. A further aspect comprises an aqueous concentrate for providing the ready-to-use anti-corrosion agent.
(FR) La présente invention concerne un procédé de prétraitement anti-corrosion de substrats métalliques au moyen d'agents anti-corrosion aqueux à base de zirconium. L'effet anti-corrosion de l'agent à base de zirconium repose sur la présence d'hydrocarbures polycycliques qui présentent mutuellement au moins un composé cyclique benzène annelé avec dans chaque cas au moins deux groupes hydroxyle à cycle substitué en position ortho. L'agent anti-corrosion aqueux peut être sensiblement exempt aussi bien de composés passivants contenant du chrome que de composés contenant du fluorure, qui attaquent le substrat métallique. Selon l'invention, le prétraitement est particulièrement avantageux lorsqu'il intervient par séchage (procédé Dry-in-Place = séchage in situ). Le procédé selon l'invention se prête par conséquent en particulier au prétraitement de feuillard et permet d'obtenir d'excellents résultats en matière de protection contre la corrosion sur des surfaces en aluminium ou en acier. Enfin, l'invention comprend en outre un procédé pour produire un couvercle de boîte réalisé en bande d'aluminium et muni d'un revêtement, au moyen de l'agent anti-corrosion à base de zirconium précité. Un autre aspect de l'invention concerne un concentré aqueux utilisé pour préparer les agents anti-corrosion prêts à l'emploi.
(DE) Die vorliegende Erfindung betrifft ein Verfahren zur korrosionsschützenden Vorbehandlung von Metallsubstraten unter Verwendung Zirkonium-basierter wässriger Korrosionsschutzmittel. Die korrosionsschützende Wirkung des Zirkonium-basierten Mittels beruht dabei auf der Anwesenheit polyzyklischer Kohlenwasserstoffe, die mindestens einen anellierten Benzenring mit jeweils mindestens zwei kernsubstituierten Hydroxylgruppen in ortho-Stellung zueinander aufweisen. Das wässrige Korrosionsschutzmittel kann dabei im Wesentlichen frei sowohl von passivierenden Chromhaltigen Verbindungen als auch von das Metallsubstrat beizenden Fluorid-haltigen Verbindungen sein. Erfindungsgemäß ist die Vorbehandlung durch Auftrocknen (Dry-in-Place Verfahren) besonders vorteilhaft. Dementsprechend eignet sich das erfindungsgemäße Verfahren insbesondere für die Vorbehandlung von Metallband, wobei hervorragende Korrosionsschutzergebnisse auf Oberflächen von Aluminium oder Stahl erzielt werden. Die Erfindung umfasst zusätzlich ein Verfahren zur Herstellung beschichteter Dosendeckel aus Aluminiumband unter Verwendung des zuvor genannten Zirkonium-basierten Korrosionsschutzmittels. In einem weiteren Aspekt wird ein wässriges Konzentrat zur Bereitstellung der anwendungsfertigen Korrosionsschutzmittel umfasst.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)