FR2384037A1 - Electrolytic colouring of anodised aluminium and its alloys - using alternating current and bath contg. stannous sulphate - Google Patents
Electrolytic colouring of anodised aluminium and its alloys - using alternating current and bath contg. stannous sulphateInfo
- Publication number
- FR2384037A1 FR2384037A1 FR7708614A FR7708614A FR2384037A1 FR 2384037 A1 FR2384037 A1 FR 2384037A1 FR 7708614 A FR7708614 A FR 7708614A FR 7708614 A FR7708614 A FR 7708614A FR 2384037 A1 FR2384037 A1 FR 2384037A1
- Authority
- FR
- France
- Prior art keywords
- bath
- pref
- alloys
- alternating current
- stannous sulphate
- 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.)
- Granted
Links
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title abstract 2
- 238000004040 coloring Methods 0.000 title abstract 2
- 229910021653 sulphate ion Inorganic materials 0.000 title abstract 2
- 229910045601 alloy Inorganic materials 0.000 title 1
- 239000000956 alloy Substances 0.000 title 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title 1
- 229910052782 aluminium Inorganic materials 0.000 title 1
- 239000004411 aluminium Substances 0.000 title 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 3
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000003963 antioxidant agent Substances 0.000 abstract 2
- 230000003078 antioxidant effect Effects 0.000 abstract 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 229910000906 Bronze Inorganic materials 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000010974 bronze Substances 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000010908 decantation Methods 0.000 abstract 1
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 abstract 1
- 229940100630 metacresol Drugs 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 150000003870 salicylic acids Chemical class 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- FAKFSJNVVCGEEI-UHFFFAOYSA-J tin(4+);disulfate Chemical compound [Sn+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O FAKFSJNVVCGEEI-UHFFFAOYSA-J 0.000 abstract 1
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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
- C25D21/18—Regeneration of process solutions of electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The process uses a.c. and a bath of the 'barrier layer' type contg. tin sulphate, esp. stannous sulphate; a mixt. of lactic- and salicylic- acids; H2SO4 added to keep the pH near to 1; metacresol-sulphuric acid and an equal amt. of pure metacresol; and an antioxidant. Continuous filtration of the bath is used with decantation for partial removal of sediment. The antioxidant is pref. a biphenol; hydroquinone; a pyrocatechol; or formaldehyde; and filtration pref. treats 50% of the bath vol. each hour. The a.c. is pref. at 17 volts; and the counter-electrode is pref. made of a non-oxidisable metal. The bath acts rapidly to obtain dark bronze or black colours which have improved stability to light or corrosion as compared with conventional colouring baths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7708614A FR2384037A1 (en) | 1977-03-17 | 1977-03-17 | Electrolytic colouring of anodised aluminium and its alloys - using alternating current and bath contg. stannous sulphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7708614A FR2384037A1 (en) | 1977-03-17 | 1977-03-17 | Electrolytic colouring of anodised aluminium and its alloys - using alternating current and bath contg. stannous sulphate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2384037A1 true FR2384037A1 (en) | 1978-10-13 |
| FR2384037B1 FR2384037B1 (en) | 1980-04-18 |
Family
ID=9188437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7708614A Granted FR2384037A1 (en) | 1977-03-17 | 1977-03-17 | Electrolytic colouring of anodised aluminium and its alloys - using alternating current and bath contg. stannous sulphate |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2384037A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4401525A (en) * | 1978-11-18 | 1983-08-30 | Th. Goldschmidt Ag | Process for coloring aluminum electrolytically with metal salts |
| EP0354365A1 (en) * | 1988-07-19 | 1990-02-14 | Henkel Kommanditgesellschaft auf Aktien | Process for electrolytically colouring anodised aluminium surfaces with metal salts |
| WO1992007976A1 (en) * | 1990-10-29 | 1992-05-14 | Henkel Kommanditgesellschaft Auf Aktien | Electrolyte additive for a colorant bath for colouring aluminium and process for colouring aluminium |
| US5409685A (en) * | 1991-06-20 | 1995-04-25 | Henkel Kommanditgesellschaft Auf Aktien | Manufactured tin(II) sulfate granules for electrolytic coloring with metal salts |
| US5587063A (en) * | 1992-12-24 | 1996-12-24 | Henkel Kommanditgesellschaft Auf Aktien | Method for electrolytic coloring of aluminum surfaces using alternating current |
| EP1252374A4 (en) * | 1999-11-25 | 2003-03-12 | Enthone Omi Inc | Process for the extended use of electrolytes |
| US6797141B1 (en) | 1999-11-25 | 2004-09-28 | Enthone Inc. | Removal of coagulates from a non-glare electroplating bath |
-
1977
- 1977-03-17 FR FR7708614A patent/FR2384037A1/en active Granted
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4401525A (en) * | 1978-11-18 | 1983-08-30 | Th. Goldschmidt Ag | Process for coloring aluminum electrolytically with metal salts |
| EP0354365A1 (en) * | 1988-07-19 | 1990-02-14 | Henkel Kommanditgesellschaft auf Aktien | Process for electrolytically colouring anodised aluminium surfaces with metal salts |
| AU608992B2 (en) * | 1988-07-19 | 1991-04-18 | Henkel Kommanditgesellschaft Auf Aktien | Electrolytic process for colouring anodized aluminium surfaces with metal salts |
| US5064512A (en) * | 1988-07-19 | 1991-11-12 | Henkel Kommanditgesellschaft Auf Aktien | Process for dyeing anodized aluminum |
| WO1992007976A1 (en) * | 1990-10-29 | 1992-05-14 | Henkel Kommanditgesellschaft Auf Aktien | Electrolyte additive for a colorant bath for colouring aluminium and process for colouring aluminium |
| AU646508B2 (en) * | 1990-10-29 | 1994-02-24 | Henkel Kommanditgesellschaft Auf Aktien | Electrolyte additive for a colorant bath for colouring aluminium and process for colouring aluminium |
| US5409592A (en) * | 1990-10-29 | 1995-04-25 | Henkel Kommanditgesellschaft Auf Aktien | Electrolyte additive for a colorant bath for coloring aluminum and process for coloring aluminum |
| US5409685A (en) * | 1991-06-20 | 1995-04-25 | Henkel Kommanditgesellschaft Auf Aktien | Manufactured tin(II) sulfate granules for electrolytic coloring with metal salts |
| US5587063A (en) * | 1992-12-24 | 1996-12-24 | Henkel Kommanditgesellschaft Auf Aktien | Method for electrolytic coloring of aluminum surfaces using alternating current |
| EP1252374A4 (en) * | 1999-11-25 | 2003-03-12 | Enthone Omi Inc | Process for the extended use of electrolytes |
| US6797141B1 (en) | 1999-11-25 | 2004-09-28 | Enthone Inc. | Removal of coagulates from a non-glare electroplating bath |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2384037B1 (en) | 1980-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |