GB962048A - Improvements relating to the anodizing of aluminum - Google Patents
Improvements relating to the anodizing of aluminumInfo
- Publication number
- GB962048A GB962048A GB33995/62A GB3399562A GB962048A GB 962048 A GB962048 A GB 962048A GB 33995/62 A GB33995/62 A GB 33995/62A GB 3399562 A GB3399562 A GB 3399562A GB 962048 A GB962048 A GB 962048A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anodizing
- aluminium
- produced
- aluminum
- electrolyte
- 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
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/14—Producing integrally coloured layers
Abstract
A decorative, protective, coloured oxide coating is produced on an aluminium or aluminium-base alloy article by anodizing it in an aqueous electrolyte comprising:- (a) 4-sulphophthalic and/or 5-sulphoisophthalic acid, preferably at least 10 e.g. 70-130 g/l; and (b) sulphuric acid and/or water soluble sulphate and/or bisulphate, preferably at least 1 and less than 20 g/l (calculated as H2SO4). The ratio of compounds (a) to (b) is preferably at least 7. The electrolyte is preferably maintained at between 40 and 110 DEG F. Using either A.C. or D.C., the current density may be between 9 and 144 A.S.F. Sulphates or bisulphates used may be those of an alkali metal e.g. Na, a heavy metal e.g. Fe, ammonium, an organic compound e.g. aniline, or hydrazine. Prior to anodizing, the aluminium surface may be etched or brightened, and the coating produced may be sealed, dyed or pigmented.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US147177A US3227639A (en) | 1961-10-24 | 1961-10-24 | Method of anodizing aluminum with electrolyte containing sulfophthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB962048A true GB962048A (en) | 1964-06-24 |
Family
ID=22520558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33995/62A Expired GB962048A (en) | 1961-10-24 | 1962-09-05 | Improvements relating to the anodizing of aluminum |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3227639A (en) |
| CH (1) | CH437960A (en) |
| DE (1) | DE1260266C2 (en) |
| GB (1) | GB962048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6583091B2 (en) | 2001-07-13 | 2003-06-24 | Exxonmobil Research And Engineering Company | Method for inhibiting corrosion using 4-sulfophthalic acid |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3331759A (en) * | 1967-07-18 | Method of manufacturing a soled elec- trolytic capacitor using an alkali metal biphthalate | ||
| US3280013A (en) * | 1964-06-02 | 1966-10-18 | Aluminum Co Of America | Anodizing electrolyte and process |
| US3384561A (en) * | 1965-02-15 | 1968-05-21 | Olin Mathieson | Process and electrolyte for coloring aluminum |
| US3411994A (en) * | 1965-09-07 | 1968-11-19 | Horizons Inc | Aluminum anodizing process and product thereof |
| US3370943A (en) * | 1965-11-04 | 1968-02-27 | Kaiser Aluminium Chem Corp | Aluminum alloy |
| CH452310A (en) * | 1965-11-12 | 1968-05-31 | Alusuisse | Electrolyte for producing self-colored, anodic oxide layers on aluminum and aluminum alloys |
| US3328274A (en) * | 1966-11-25 | 1967-06-27 | Kaiser Aluminium Chem Corp | Method of anodizing aluminum |
| NO120248B (en) * | 1969-06-25 | 1970-09-21 | O Gedde | |
| FR2091651A5 (en) * | 1970-05-14 | 1972-01-14 | Aluminum Co Of America | |
| US4022670A (en) * | 1975-07-16 | 1977-05-10 | Swiss Aluminium Ltd. | Process for preparation of lithographic printing plates |
| US4060462A (en) * | 1976-10-21 | 1977-11-29 | Aluminum Company Of America | Color anodizing of aluminum |
| US4177299A (en) * | 1978-01-27 | 1979-12-04 | Swiss Aluminium Ltd. | Aluminum or aluminum alloy article and process |
| EP0689096B1 (en) | 1994-06-16 | 1999-09-22 | Kodak Polychrome Graphics LLC | Lithographic printing plates utilizing an oleophilic imaging layer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL48557C (en) * | 1935-12-11 | |||
| NL238065A (en) * | 1958-04-14 |
-
1961
- 1961-10-24 US US147177A patent/US3227639A/en not_active Expired - Lifetime
-
1962
- 1962-08-24 DE DE19621260266 patent/DE1260266C2/en not_active Expired
- 1962-09-05 GB GB33995/62A patent/GB962048A/en not_active Expired
- 1962-10-24 CH CH1247762A patent/CH437960A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6583091B2 (en) | 2001-07-13 | 2003-06-24 | Exxonmobil Research And Engineering Company | Method for inhibiting corrosion using 4-sulfophthalic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1260266C2 (en) | 1973-01-04 |
| US3227639A (en) | 1966-01-04 |
| CH437960A (en) | 1967-06-15 |
| DE1260266B (en) | 1973-01-04 |
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