EP1639151A1 - Composition permettant de former des revetements de conversion sur des surfaces en aluminium - Google Patents
Composition permettant de former des revetements de conversion sur des surfaces en aluminiumInfo
- Publication number
- EP1639151A1 EP1639151A1 EP04743071A EP04743071A EP1639151A1 EP 1639151 A1 EP1639151 A1 EP 1639151A1 EP 04743071 A EP04743071 A EP 04743071A EP 04743071 A EP04743071 A EP 04743071A EP 1639151 A1 EP1639151 A1 EP 1639151A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- coating material
- per litre
- material according
- aluminium
- 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.)
- Withdrawn
Links
- 239000004411 aluminium Substances 0.000 title claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000007739 conversion coating Methods 0.000 title description 9
- 239000000203 mixture Substances 0.000 title description 5
- 238000000576 coating method Methods 0.000 claims abstract description 73
- 239000011248 coating agent Substances 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims abstract description 39
- -1 zirconium ions Chemical class 0.000 claims abstract description 16
- 150000004676 glycans Chemical class 0.000 claims abstract description 13
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 13
- 239000005017 polysaccharide Substances 0.000 claims abstract description 13
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 11
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 10
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 8
- 239000010452 phosphate Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 19
- 239000012141 concentrate Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 150000001447 alkali salts Chemical class 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000001648 tannin Substances 0.000 claims description 3
- 229920001864 tannin Polymers 0.000 claims description 3
- 235000018553 tannin Nutrition 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 241000894006 Bacteria Species 0.000 claims description 2
- 241001474374 Blennius Species 0.000 claims description 2
- 102000004190 Enzymes Human genes 0.000 claims description 2
- 108090000790 Enzymes Proteins 0.000 claims description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 229920000615 alginic acid Polymers 0.000 claims description 2
- 235000010443 alginic acid Nutrition 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 229920001277 pectin Polymers 0.000 claims description 2
- 235000010987 pectin Nutrition 0.000 claims description 2
- 239000001814 pectin Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- OMQSJNWFFJOIMO-UHFFFAOYSA-J zirconium tetrafluoride Chemical compound F[Zr](F)(F)F OMQSJNWFFJOIMO-UHFFFAOYSA-J 0.000 claims description 2
- 239000003929 acidic solution Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 18
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000000976 ink Substances 0.000 description 4
- 239000004922 lacquer Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000009928 pasteurization Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000007991 ACES buffer Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- GBNDTYKAOXLLID-UHFFFAOYSA-N zirconium(4+) ion Chemical compound [Zr+4] GBNDTYKAOXLLID-UHFFFAOYSA-N 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/361—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/10—Orthophosphates containing oxidants
Definitions
- This invention concerns a coating material, a coating material concentrate, and a method of coating, and particularly but not exclusively a material or method for coating surfaces of aluminium or aluminium alloys.
- aqueous coating solutions that are effective in forming thereon coatings which are corrosion resistant and thereby protect the surface from degradation due to attack by corrosive materials.
- the coatings formed from such coating solutions should also have properties such that overlying coatings which are applied thereto adhere tightly and strongly.
- overlying coatings are decorative or functional in nature and are formed from materials such as paints, lacquers, inks, etc.
- an aluminium coating operation is the coating of aluminium cans.
- the corrosion resistant and adherent coatings which are applied to aluminium cans should be uniformly clear and colourless so that the coated cans have the bright shiny natural appearance of the underlying aluminium. This bright shiny natural appearance is desired in the final product even though portions of the can may be covered with coloured paints or inks.
- coated aluminium cans should have is the ability to resist discoloration when the coated can is subjected to moderately hot water, for example, water having a temperature within the range of about 60 to 80°C.
- moderately hot water for example, water having a temperature within the range of about 60 to 80°C.
- aluminium cans are treated in this way to achieve "pasteurisation" of the cans. This treatment has a tendency to cause an uncoated or even a coated aluminium surface to blacken or otherwise discolour thereby leaving the can with an unattractive appearance.
- the most widely used coating solutions for aluminium cans contain a source of zirconium, free fluoride ions and a source of vegetable tannin. While such a coating solution is capable of forming coatings of the type desired, their use creates waste disposal and workplace hazard problems because of the presence therein of the highly corrosive and toxic fluoride ions. Additional considerations of importance for the treatment bath which is applied to the aluminium and which provides the coating are: (1 ) the energy utilised by the method of application of the conversion coating, including the temperature at which the coating is applied; (2) the quality -of the resulting coating; and (3) the control necessary to achieve the desired coating. A high quality coating with short application times and relatively low process temperatures is most desired.
- a coating material comprising a coating solution usable on aluminium surfaces, the solution being acidic with a pH of between 2 and 4.5, and including:
- the solution is preferably aqueous.
- the coating material is preferably such as to not require the presence of free fluoride ions for its effectiveness.
- the material is preferably substantially free of vegetable tannins.
- the material preferably provides a substantially transparent coating when applied.
- the zirconium ions may be obtained from fluorozirconic acid, but may be obtained from alkali metal or ammonium fluorozirconates, or zirconium fluoride, nitrates or carbonates.
- the solution preferably includes nitric acid, the nitric acid concentration being preferably between 0.05g per litre and 0.2g per litre.
- the solution may include a complex fluoride.
- the complex fluoride may be fluorosilicic acid, fiuoroboric acid, or a similar acid.
- the complex fluoride concentration is- preferably between 0.05 and 0.2g per litre.
- the polysaccharide may be polyglucoside.
- the polyglucoside is preferably derived from any of starch, pectins, alginates and gums from plants, trees and seaweed by hydrolysis using acid or enzymes, either synthetic or those produced by yeasts and bacteria.
- the polysaccharide is preferably alkylated, ethoxylated or propoxylated.
- the invention also provides a concentrate for making a coating solution usable on aluminium surfaces, the concentrate including:
- the invention further provides a method of coating an aluminium or aluminium alloy surface, the method comprising using a material according to any of the preceding eleven paragraphs.
- the coating may be formed from a concentrate as previously defined, and nitric acid may be added to the concentrate.
- the solution may be sprayed onto the surface.
- the coating may take place at a temperature of between 20 and 40°C, and desirably between 25 and 35°C.
- the coating may take place for between 10 and 60 seconds.
- compositions were prepared from concentrates, with the first two being according to the invention and the others included for reference. These were applied by spraying onto previously cleaned, drawn and ironed aluminium cans. Following spraying the cans were rinsed with tap water and then cold deionised water and dried for 2 minutes at 180°C. The spraying was carried out at 38°C for 40 seconds with a spray pressure of 1 bar.
- Table 1 The contents of the compositions are given in Table 1 below where the rows are for the composition and the columns are respectively: -
- the cans were placed in a muffle furnace at around 525°C for 5 minutes. The discolouration of the aluminium surface was observed. A golden coloured can being desirable. A light muffle indicates inadequate treatment, a dark muffle indicates over treatment.
- the tape adhesion test was performed to measure the adhesion between a cleaned surface and an organic finish or overcoating.
- White ink from BASF was applied, using a rubber brayer.
- Water-borne, wet-ink varnish from PPG Company was roll-coated with a #1 0 draw-down bar to achieve a coating thickness of 3gm "2 .
- the coated surface was cured in a forced-air oven for 90 seconds at about 177°C.
- the finished (i.e. painted) surface after being cured, was immersed in boiling tap water or a 1% detergent (such as "JOY", a commercially available PROCTOR & GAMBLE product) solution for 15 minutes, rinsed in tap water, and dried.
- the treated surface was then cross- hatched, and SCOTCH brand transparent tape (#61 0) (commercially available from 3M) was applied to the cross-hatched area. The amount of paint removed by the tape was observed, and the results were rated as follows:
- the invention therefore provides coatings with good properties which for instance avoid discolouration if pasteurisation is carried out.
- the materials according to the invention are free of fluoride ions which prevent corrosion and toxic hazards generally encountered when fluoride ions are present. Furthermore, waste disposal problems are substantially avoided.
- coatings according to the present invention can be provided at relatively low temperatures and with short process times. With coatings according to the invention it is possible to utilise high levels of phosphate to give good coatings which are very resistant to corrosion especially to darkening for example during pasteurisation. This is enabled by the polysaccharide, which prevents high levels of phosphate from causing a hydrophobic effect on the conversion coating layer and hence inhibiting the process.
- the treating bath that produces the coating is not as sensitive to "cleaning solution drag", the proclivity of a cleaning solution to undesirably alter the pH of the treating bath for the conversion coating.
- “drag-in” from an acidic cleaning solution used to clean cans of lubricant and fines in a can production line will lower the pH of a subsequent treating bath for a conversion coating, below the commercially operable limits of the bath.
- a further advantage provided is the inhibition of dissolution of aluminium from the can during conversion coating. This ensures that the total amount of aluminium released into the solution is much less than with previous arrangements. This in turn means that there does not have to be an excess of free fluoride in the solution to sequester aluminium which would otherwise' react with the source of zirconium and inhibit the conversion coating process.
- the polysaccharide inhibits dissolution of aluminium from the can surface during conversion coating.
- the small amounts of aluminium that are released are sequestered by the carboxylic acid or its derivative, which avoids precipitation of aluminium from the bath.
- This also means that very bright and shiny cans are produced by the invention as there is no fluoride to etch the can.
- the polysaccharide improves the conversion coating, giving improved crystal structure and a more even coating. This allows optimum adhesion for subsequent applied coatings.
- coating materials according to the invention could be used with solvent-based systems in addition to aqueous systems.
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)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
L'invention concerne un matériau de revêtement utilisable sur des surfaces en aluminium, ce matériau se présentant sous la forme d'une solution acide dont le pH est compris entre 2 et 4,5. Le matériau selon l'invention peut comporter : 0,05 g par litre d'ions zirconium ; 0,1 g par litre d'un polysaccharide, par exemple d'un polyglucoside ; 0,05 g par litre d'acide carboxylique, et ; 0,11 g par litre de phosphate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0314901A GB0314901D0 (en) | 2003-06-26 | 2003-06-26 | Coating material |
| PCT/GB2004/002720 WO2005001158A1 (fr) | 2003-06-26 | 2004-06-24 | Composition permettant de former des revetements de conversion sur des surfaces en aluminium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1639151A1 true EP1639151A1 (fr) | 2006-03-29 |
Family
ID=27637387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04743071A Withdrawn EP1639151A1 (fr) | 2003-06-26 | 2004-06-24 | Composition permettant de former des revetements de conversion sur des surfaces en aluminium |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1639151A1 (fr) |
| JP (1) | JP2007527465A (fr) |
| AU (1) | AU2004252269A1 (fr) |
| BR (1) | BRPI0411926A (fr) |
| GB (1) | GB0314901D0 (fr) |
| WO (1) | WO2005001158A1 (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9428410B2 (en) | 2007-09-28 | 2016-08-30 | Ppg Industries Ohio, Inc. | Methods for treating a ferrous metal substrate |
| US8097093B2 (en) | 2007-09-28 | 2012-01-17 | Ppg Industries Ohio, Inc | Methods for treating a ferrous metal substrate |
| WO2010009064A2 (fr) | 2008-07-15 | 2010-01-21 | Basf Corporation | Liiquides à base de dioxyde de chlore non cytotoxique |
| US10400135B2 (en) * | 2012-11-26 | 2019-09-03 | Chemetall Gmbh | Method for coating metal surfaces of substrates, and objects coated according to said method |
| MY171863A (en) | 2013-03-06 | 2019-11-05 | Ppg Ind Ohio Inc | Methods for treating a ferrous metal substrate |
| US9273399B2 (en) | 2013-03-15 | 2016-03-01 | Ppg Industries Ohio, Inc. | Pretreatment compositions and methods for coating a battery electrode |
| CA2947464A1 (fr) * | 2014-05-14 | 2015-11-19 | Chemetall Gmbh | Procede de revetement de surfaces metalliques de substrats et objets revetus selon ce procede |
| US10435806B2 (en) | 2015-10-12 | 2019-10-08 | Prc-Desoto International, Inc. | Methods for electrolytically depositing pretreatment compositions |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4992116A (en) * | 1989-04-21 | 1991-02-12 | Henkel Corporation | Method and composition for coating aluminum |
| US5139586A (en) * | 1991-02-11 | 1992-08-18 | Coral International, Inc. | Coating composition and method for the treatment of formed metal surfaces |
| GB2259920A (en) * | 1991-09-10 | 1993-03-31 | Gibson Chem Ltd | Surface conversion coating solution based on molybdenum and phosphate compounds |
| US5534082A (en) * | 1992-04-01 | 1996-07-09 | Henkel Corporation | Composition and process for treating metal |
| DE4412138A1 (de) * | 1994-04-08 | 1995-10-12 | Henkel Kgaa | Chromfreies Verfahren zur No-Rinse Behandlung von Aluminium und seinen Legierungen sowie hierfür geeignete wäßrige Badlösungen |
-
2003
- 2003-06-26 GB GB0314901A patent/GB0314901D0/en not_active Ceased
-
2004
- 2004-06-24 JP JP2006516471A patent/JP2007527465A/ja active Pending
- 2004-06-24 EP EP04743071A patent/EP1639151A1/fr not_active Withdrawn
- 2004-06-24 AU AU2004252269A patent/AU2004252269A1/en not_active Abandoned
- 2004-06-24 BR BRPI0411926-6A patent/BRPI0411926A/pt not_active Application Discontinuation
- 2004-06-24 WO PCT/GB2004/002720 patent/WO2005001158A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005001158A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2004252269A1 (en) | 2005-01-06 |
| WO2005001158A1 (fr) | 2005-01-06 |
| GB0314901D0 (en) | 2003-07-30 |
| JP2007527465A (ja) | 2007-09-27 |
| BRPI0411926A (pt) | 2006-08-15 |
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Legal Events
| Date | Code | Title | Description |
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