GB1235918A - Coating process for protecting metals or metal alloys from corrosion - Google Patents
Coating process for protecting metals or metal alloys from corrosionInfo
- Publication number
- GB1235918A GB1235918A GB34633/68A GB3463368A GB1235918A GB 1235918 A GB1235918 A GB 1235918A GB 34633/68 A GB34633/68 A GB 34633/68A GB 3463368 A GB3463368 A GB 3463368A GB 1235918 A GB1235918 A GB 1235918A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- metal
- deposition
- surfactant
- bath
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/04—Electrophoretic coating characterised by the process with organic material
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/20—Pretreatment
Abstract
1,235,918. Electro-deposition of surfactant coating on metal. ELEKTROCHEMISCHE MATERIALBESCHICHTUNG m. b. H. GES FUR [trading as ECM GES FUR ELEKTROCHEMISCHE MATERIALBESCHICHTUNG m.b.H. & CO. K. G.] July 19, 1968 [July 21, 1967], No.34633/68. Heading C7B. To protect a metal or metal alloy from corrosion and/or to improve the adhesion to said metal or alloy of a lacquer coating or a coating of plastics material, the metal or alloy is connected as an electrode in an aqueous bath containing one or more surfactants and a current is passed through the bath to deposit on the metal or alloy a coating consisting substantially of surfactant material, the coating subsequently being subjected to a heat-treatment, typically in the range of 80 to 200 C. Preferably the aqueous bath contains 1 to 100 g/l of surfactant material such as fatty acid condensation products; sodium salts of alkyl sulphosuccinates or Turkey red oil; alkyl sulphates, phosphates or sulphonates; or alkyl aryl sulphonates as anionic surfactants which may be anodically deposited: N-alkyl pyridinium or alkyl ammonium salts as cationic surfactants which may be cathodically deposited: or polyoxyalkylene adducts as nonionic surfactants which may be deposited under either anodic or cathodic action. For anodic deposition an oxygen acceptor e.g. hydrazine may be included in the bath while for cathodic deposition a hydrogen acceptor e.g. hydrogen peroxide may be present in the bath. In examples metal panels of iron or aluminium are initially cathodically degreased prior to coating. For the formation of coatings on magnesium, aluminium or their alloys the bath also includes potassium fluoride and is used at pH 6 to 14. The coating may be effected in two stages, e.g. cathodic deposition of a cationic surfactant followed by anodic deposition of an anionic surfactant or vice versa, or electrolytic deposition of a surfactant followed by non- electro-chemical deposition of a further surfactant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671621441 DE1621441A1 (en) | 1967-07-21 | 1967-07-21 | Process for the corrosion protection of metals or metal alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1235918A true GB1235918A (en) | 1971-06-16 |
Family
ID=5682534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34633/68A Expired GB1235918A (en) | 1967-07-21 | 1968-07-19 | Coating process for protecting metals or metal alloys from corrosion |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3497440A (en) |
| GB (1) | GB1235918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005039770A1 (en) | 2003-10-17 | 2005-05-06 | 3M Innovative Properties Company | Surfactant composition having stable hydrophilic character |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1796033A1 (en) * | 1968-08-20 | 1972-02-17 | Albert Ag Chem Werke | Process for coating electrically conductive objects by electrophoresis |
| JPS5116462B1 (en) * | 1971-03-31 | 1976-05-24 | ||
| US3882009A (en) * | 1973-08-29 | 1975-05-06 | Dow Chemical Co | Electrodeposition of isothiouronium stabilized lyophobic colloids |
| US3954588A (en) * | 1974-10-01 | 1976-05-04 | E. I. Du Pont De Nemours And Company | Electrocoating process for depositing a corrosion retardant layer on a metal substrate and sequentially electrocoating a cationic film-forming polymer coating |
| US4028205A (en) * | 1975-09-29 | 1977-06-07 | Kaiser Aluminum & Chemical Corporation | Surface treatment of aluminum |
| US4487674A (en) * | 1983-04-01 | 1984-12-11 | Dresser Industries, Inc. | Process for electrophoretic film deposition achieving increased film thickness |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1027813A (en) * | 1962-02-27 | 1966-04-27 | Goodlass Wall & Co Ltd | A process for the deposition of pigmented resinous films on metal objects |
-
1968
- 1968-07-17 US US745371A patent/US3497440A/en not_active Expired - Lifetime
- 1968-07-19 GB GB34633/68A patent/GB1235918A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005039770A1 (en) | 2003-10-17 | 2005-05-06 | 3M Innovative Properties Company | Surfactant composition having stable hydrophilic character |
| US7378451B2 (en) | 2003-10-17 | 2008-05-27 | 3M Innovative Properties Co | Surfactant composition having stable hydrophilic character |
| AU2004284050B2 (en) * | 2003-10-17 | 2010-05-20 | 3M Innovative Properties Company | Surfactant composition having stable hydrophilic character |
Also Published As
| Publication number | Publication date |
|---|---|
| US3497440A (en) | 1970-02-24 |
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