DE2320547A1 - AFTER-TREATMENT AGENTS FOR PHOSPHATED METAL SURFACES - Google Patents
AFTER-TREATMENT AGENTS FOR PHOSPHATED METAL SURFACESInfo
- Publication number
- DE2320547A1 DE2320547A1 DE19732320547 DE2320547A DE2320547A1 DE 2320547 A1 DE2320547 A1 DE 2320547A1 DE 19732320547 DE19732320547 DE 19732320547 DE 2320547 A DE2320547 A DE 2320547A DE 2320547 A1 DE2320547 A1 DE 2320547A1
- Authority
- DE
- Germany
- Prior art keywords
- tannin
- metal surfaces
- extract
- phosphated metal
- treatment agents
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 8
- 239000002184 metal Substances 0.000 title claims description 8
- 229920001864 tannin Polymers 0.000 claims description 24
- 239000001648 tannin Substances 0.000 claims description 24
- 235000018553 tannin Nutrition 0.000 claims description 24
- 239000000284 extract Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 235000017343 Quebracho blanco Nutrition 0.000 claims description 3
- 241000065615 Schinopsis balansae Species 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 2
- 239000001263 FEMA 3042 Substances 0.000 claims description 2
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- 229920002258 tannic acid Polymers 0.000 claims description 2
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 2
- 229940033123 tannic acid Drugs 0.000 claims description 2
- 235000015523 tannic acid Nutrition 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 description 6
- 235000021317 phosphate Nutrition 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- IQBJFLXHQFMQRP-UHFFFAOYSA-K calcium;zinc;phosphate Chemical compound [Ca+2].[Zn+2].[O-]P([O-])([O-])=O IQBJFLXHQFMQRP-UHFFFAOYSA-K 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229920002770 condensed tannin Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229920001461 hydrolysable tannin Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000185 sucrose group Chemical group 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—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
- C23C—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
- C23C22/00—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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Electrochemical Coating By Surface Reaction (AREA)
- Electroplating Methods And Accessories (AREA)
- Paints Or Removers (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Medicines Containing Plant Substances (AREA)
Description
METALLGESELLSCHAFT Frankfurt/M., den 19.4.73METALLGESELLSCHAFT Frankfurt / M., April 19, 1973
Aktiengesellschaft DrBr/MSchuPublic company DrBr / MSchu
Prov. No. 7118 MProv. No. 7118 M.
Nachbehandlungsmittel für phosphatierte MetalloberflächenPost-treatment agent for phosphated metal surfaces
Die Erfindung bezieht sich auf ein verbessertes Tannin enthaltendes Nachbehandlungsmittel für phosphatierte Metalloberflächen. The invention relates to an improved tannin containing Post-treatment agent for phosphated metal surfaces.
Oberflächen von Metallen, wie Eisen, Stahl, Zink und Aluminium, werden häufig mit einem chemisch aufgebrachten Überzug, z.B. einem Phosphatüberzug, versehen, um die Korrosionsanfälligkeit zu erniedrigen und um einen guten Untergrund für die anschließende Lackierung zu erzielen. Zur weiteren Verbesserung ist es üblich, die phosphatierten Oberflächen nachzuspülen, wofür insbesondere'Lösungen verwendet werden, die Chromsäure oder chromsaure Salze enthalten. Obwohl Chromat-Nachspüllösungen sehr wirksam sind, besitzen sie auch Nachteile. Auf Grund der Toxizität des sechswertigen Chroms ergeben sich Probleme der Abwasserbeseitigung. Darüber hinaus können bei bestimmten Anstrichsystern en Fehler, wie Blasenbildung, auftreten, so daß eine abschließende Spülung mit entionisiertem Wasser notwendig wird. Hierdurch wird jedoch der erzielte Korrosionsschutz erniedrigt.Surfaces of metals such as iron, steel, zinc and aluminum are often given a chemically applied coating, e.g. a phosphate coating to reduce the susceptibility to corrosion and to provide a good substrate for the subsequent painting. For further improvement, it is common to use the phosphated surfaces rinsing, for which particular 'solutions are used, which contain chromic acid or chromic acid salts. Although chromate rinse solutions are very effective, they have also disadvantages. Because of the toxicity of hexavalent chromium, there are problems with wastewater disposal. About that In addition, defects such as blistering can occur with certain paint systems, so that a final rinse with deionized water becomes necessary. However, this lowers the corrosion protection achieved.
Aus der DAS 1 192 487 ist es bekannt, zur Herstellung oder Erhöhung der Korrosionsbeständigkeit von Metallen tanninhaltige Phosphat!erungslösungen anzuwenden. Nach einer Abwandlung dieses Verfahrens sollen die mit tanninfreienFrom DAS 1 192 487 it is known to produce or increase the corrosion resistance of metals containing tannins Use phosphate generation solutions. After a modification This process is said to be those with tannin-free
- 2- 2
309846/1080309846/1080
Phosphatierungslösungen hergestellten Schutzschichten mit einer Tanninlösung von etwa 0,05 g/l nachbehandelt werden. Die hierbei erzielten Ergebnisse befriedigen jedoch nicht.Protective layers produced by phosphating solutions can be post-treated with a tannin solution of approx. 0.05 g / l. However, the results achieved here are unsatisfactory.
Gegenstand der Erfindung ist ein Tannin enthaltendes wäßriges Nachbehandlungsmittel für phosphatiert^ Metalloberflächen, welches dadurch gekennzeichnet ist, daß es 0,1 bis 10 g/l, vorzugsweise 0,25 bis 2 g/l, Tannin enthält.The invention relates to an aqueous aftertreatment agent containing tannin for phosphated metal surfaces, which is characterized in that it contains 0.1 to 10 g / l, preferably 0.25 to 2 g / l, tannin.
Der pH-Wert des Nachbehandlungsmittels kann im Bereich von 3 bis 8 liegen und beträgt vorzugsweise 4 bis 6.The pH of the aftertreatment agent can range from 3 to 8 and is preferably 4 to 6.
Einer der wesentlichen Vorteile der Anwendung eines solchen Nachbehandlungsmittels liegt in der Erniedrigung oder Vermeidung der Blasenbildung, die in dem Lacküberzug auftreten kann unter Bedingungen von hoher Feuchtigkeit, wenn Wasser auf dem lackierten Werkstück kondensiert. Dieses Problem tritt besonders zutage bei der Lackierung galvanisierter Oberflächen.One of the main advantages of using such an aftertreatment agent is the lowering or Avoid the blistering that can occur in the paint coating under conditions of high humidity when Water condenses on the painted workpiece. This problem is particularly evident when painting galvanized surfaces Surfaces.
Die natürlichen Tannin-Extrakte sind pölyphenolische Substanzen, die in hydrolysierbare Tannine, kondensierte Tannine und gemischte Tannine, die sowohl hydrolysierbare als auch kondensierte Tannine enthalten, eingeteilt werden können. The natural tannin extracts are polyphenolic substances, the tannins condensed into hydrolyzable tannins and mixed tannins that are both hydrolyzable and also contain condensed tannins.
Die meisten Tannin-Extrakte sind bei den angegebenen Konzentrationsund pH-Bedingungen wirksam, um die Schwitzwasserbeständigkeit zu erhöhen. Es wurde jedoch festgestellt, daß nur gewisse Tannine, wie Quebracho-Extrakt oder Gerbsäure (National Formulary), auch zu einer Erhöhung der Korrosionsbeständigkeit der phosphat!ert.en und lackierten Metalle führen. Diese Tannine, insbesondereMost of the tannin extracts are at the stated concentrations pH conditions effective to condensation water resistance to increase. However, it was found that only certain tannins, such as quebracho extract or tannic acid (National Formulary), also to increase the corrosion resistance of the phosphate! and painted metals lead. Those tannins, in particular
309848/1080309848/1080
Quebracho-Extrakt, werden daher bevorzugt. Nicht mit Sulfit behandelte Produkte eignen sich besser für die erfindungsgemäßen Zwecke als Sulfit enthaltende.Quebracho extract, therefore, are preferred. Not with sulfite treated products are more suitable for those of the invention Purposes other than containing sulphite.
Es wurde weiterhin gefunden, daß solche Tannine zu besseren Ergebnissen, führen, die bei der Nuklearmagnetresonanz-Analyse (NMR) ein Aromaten/Alkyl-Verhältnis von über 2, vorzugsweise von 2 bis 5, aufweisen. Unter "Alkyl" ist der Anteil des Moleküls verstanden, der aus gesättigten aliphatischen Gruppen besteht. Diese Gruppen werden bei der NMR-Analyse als Protonen oder Wasserstoff-Atome aus den -CH oder -CHp-Anteilen der Sucrose-Reste der Tannine aufgezeigt. Unter "Aromaten" werden Wasserstoff oder Protonen verstanden, die an das Kohlenstoff-Atom in einem Benzol-Ring in dem polyphenolisehen Anteil des Tannins angelagert sind.It has also been found that such tannins give better results than those in nuclear magnetic resonance analysis (NMR) an aromatic / alkyl ratio of over 2, preferably from 2 to 5, have. The term "alkyl" is understood to mean that portion of the molecule which consists of saturated aliphatic groups. These groups are identified as protons or hydrogen atoms in the NMR analysis the -CH or -CHp parts of the sucrose residues of the tannins shown. "Aromatics" are understood to mean hydrogen or protons, which are attached to the carbon atom in one Benzene ring are deposited in the polyphenolic part of the tannin.
Die Nachbehandlungsmittel können bei Raumtemperatur bis etwa 93 C angewendet werden.The aftertreatment agents can be used at room temperature to about 93 C.
Zur Aufbringung der Phosphatschicht sind die üblichen Phosphat!erungsverfahren unter Benutzung von Lösungen schichtbildender oder nichtschichtbildender Phosphate geeignet. Eine besonders gute Wirksamkeit des tanninhaltigen Nachspülmittels wurde bei Zink-Calziumphosphat-Verfahren festgestellt.The usual methods are used to apply the phosphate layer Phosphate generation process using solutions layer-forming or non-layer-forming phosphates are suitable. A particularly good effectiveness of the tannic Rinse aid was found in the zinc-calcium phosphate process.
Zur Herstellung der Nachbehandlungslösungen können mit Vorteil wäßrige Konzentrate verwendet werden, die etwa 5 bis 60 Gew.%, vorzugsweise 15 bis 35 Gew.% Tannin (bezogen auf 100% Tannin-Extrakt) enthalten. Da eine Schwierigkeit dadurch auftreten kann, daß das Tannin währendTo prepare the aftertreatment solutions, aqueous concentrates can be used with advantage, such as 5 to 60% by weight, preferably 15 to 35% by weight of tannin (based on to 100% tannin extract). Because a difficulty can arise in that the tannin during
-4 --4 -
309846/ 1080309846/1080
des Versands auszufällen neigt, ist.es zweckmäßig^ das Konzentrat mit Alkali, z.B. NaOH, alkalisch einzustellen, vorzugsweise auf einen pH-Wert von 8 bis 10. Andere Bestandteile, wie z.B. Aluminiumfluorid, können dem Kon- _zentrat zugegeben werden, sofern die zusätzlichen Komponenten nicht zu einer Ausfällung des Tannins und einer Eeeinträchtigung der erwünschten Nachbehandlungswirkung führen.the shipping tends to fail, it is expedient ^ that Adjust concentrate with alkali, e.g. NaOH, to make it alkaline, preferably to a pH value of 8 to 10. Other components, such as aluminum fluoride, can _Centrate can be added, provided the additional components does not lead to a precipitation of the tannin and an impairment of the desired aftertreatment effect to lead.
Zur Einstellung des Bad-pH-Wertes können z.B. Fluorwasserstoffsäure, Phosphorsäure, Essigsäure yerwendet werden. Vorzugsweise wird Phosphorsäure benutzt.To adjust the bath pH, e.g. hydrofluoric acid, Phosphoric acid, acetic acid can be used. Phosphoric acid is preferably used.
- 5- 5th
- Patentansprüche- claims
309846/1080309846/1080
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29271472A | 1972-04-24 | 1972-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2320547A1 true DE2320547A1 (en) | 1973-11-15 |
Family
ID=23125882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732320547 Pending DE2320547A1 (en) | 1972-04-24 | 1973-04-21 | AFTER-TREATMENT AGENTS FOR PHOSPHATED METAL SURFACES |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4947224A (en) |
| AR (1) | AR197896A1 (en) |
| AU (1) | AU471681B2 (en) |
| BE (1) | BE798243A (en) |
| BR (1) | BR7302965D0 (en) |
| CA (1) | CA980221A (en) |
| DE (1) | DE2320547A1 (en) |
| ES (1) | ES414007A1 (en) |
| GB (1) | GB1430020A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2701321A1 (en) * | 1976-01-30 | 1977-08-04 | Metallgesellschaft Ag | METHOD FOR AFTER-TREATMENT OF ZINC OR ZINC ALLOYS |
| EP0055881A1 (en) * | 1981-01-02 | 1982-07-14 | Metallgesellschaft Ag | Method for the treatment of metal surfaces |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50155439A (en) * | 1974-05-16 | 1975-12-15 | ||
| ZA756500B (en) * | 1974-10-25 | 1976-09-29 | Oxy Metal Industries Corp | Post-treatment of conversion-coated metal surfaces |
| JPS5327636A (en) * | 1976-08-27 | 1978-03-15 | Sankyo Aruminiumu Kougiyou Kk | Method of treating undercoat on aluminum |
| JPS5424232A (en) * | 1977-07-26 | 1979-02-23 | Nippon Packaging Kk | Surface treating method of aluminum |
| JPS5716175A (en) * | 1980-07-04 | 1982-01-27 | Nisshin Steel Co Ltd | Pretreatment for painting stainless steel plate |
| FR2685352A1 (en) * | 1991-12-24 | 1993-06-25 | Pont A Mousson | MULTILAYER COATING, WITH ITS OBTAINING METHOD AND APPLICATION |
| JP2009174010A (en) * | 2008-01-24 | 2009-08-06 | Nisshin Steel Co Ltd | Chemical conversion treated steel sheet |
| JP4471398B2 (en) | 2008-06-19 | 2010-06-02 | 株式会社サンビックス | Rust-proof metal, rust-proof film forming composition, and rust-proof film forming method using the same |
-
1973
- 1973-04-13 BE BE130042A patent/BE798243A/en not_active IP Right Cessation
- 1973-04-19 CA CA169,938A patent/CA980221A/en not_active Expired
- 1973-04-19 GB GB1900773A patent/GB1430020A/en not_active Expired
- 1973-04-21 DE DE19732320547 patent/DE2320547A1/en active Pending
- 1973-04-24 AR AR24769173A patent/AR197896A1/en active
- 1973-04-24 JP JP4658473A patent/JPS4947224A/ja active Pending
- 1973-04-24 ES ES414007A patent/ES414007A1/en not_active Expired
- 1973-04-24 BR BR296573A patent/BR7302965D0/en unknown
- 1973-04-26 AU AU54882/73A patent/AU471681B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2701321A1 (en) * | 1976-01-30 | 1977-08-04 | Metallgesellschaft Ag | METHOD FOR AFTER-TREATMENT OF ZINC OR ZINC ALLOYS |
| EP0055881A1 (en) * | 1981-01-02 | 1982-07-14 | Metallgesellschaft Ag | Method for the treatment of metal surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| AU5488273A (en) | 1974-10-31 |
| AR197896A1 (en) | 1974-05-15 |
| GB1430020A (en) | 1976-03-31 |
| CA980221A (en) | 1975-12-23 |
| AU471681B2 (en) | 1976-04-29 |
| ES414007A1 (en) | 1976-06-01 |
| JPS4947224A (en) | 1974-05-07 |
| BR7302965D0 (en) | 1974-08-15 |
| BE798243A (en) | 1973-07-31 |
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