IT1118024B - Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint - Google Patents
Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paintInfo
- Publication number
- IT1118024B IT1118024B IT2167077A IT2167077A IT1118024B IT 1118024 B IT1118024 B IT 1118024B IT 2167077 A IT2167077 A IT 2167077A IT 2167077 A IT2167077 A IT 2167077A IT 1118024 B IT1118024 B IT 1118024B
- Authority
- IT
- Italy
- Prior art keywords
- alloy
- paint
- aluminium
- corrosion
- protective coating
- Prior art date
Links
- 229910045601 alloy Inorganic materials 0.000 title abstract 2
- 239000000956 alloy Substances 0.000 title abstract 2
- 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
- 230000007797 corrosion Effects 0.000 title 1
- 238000005260 corrosion Methods 0.000 title 1
- 239000003973 paint Substances 0.000 title 1
- 239000011253 protective coating Substances 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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 abstract 2
- 239000001263 FEMA 3042 Substances 0.000 abstract 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 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 2
- 239000007921 spray Substances 0.000 abstract 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 abstract 2
- 229940033123 tannic acid Drugs 0.000 abstract 2
- 235000015523 tannic acid Nutrition 0.000 abstract 2
- 229920002258 tannic acid Polymers 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 239000008139 complexing agent Substances 0.000 abstract 1
- 229940050410 gluconate Drugs 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Landscapes
- Chemical Treatment Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The process comprises treating the surface of Al (alloy) with an alkaline soln. having pH >10 and contg. Ti ion and complexing agent, washing with water, and then treating with an acidic soln. contg. tannine or tannic acid as the main component. In an example Al alloy plate was spray with an alkaline soln. contg. NaOH of 7 g/l, 40% Ti sulphate soln of 1 g/l and Na gluconate of 1-8 g/l at 65/C for 6 sec. washed with water, spray with an acidic soln. contg. tannic acid of 50 g l at 55 degrees C ofr l sec. washed with water, and then dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2167077A IT1118024B (en) | 1977-03-25 | 1977-03-25 | Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2167077A IT1118024B (en) | 1977-03-25 | 1977-03-25 | Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1118024B true IT1118024B (en) | 1986-02-24 |
Family
ID=11185133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2167077A IT1118024B (en) | 1977-03-25 | 1977-03-25 | Forming protective coating on aluminium (alloy) - giving film resistant to corrosion, and with excellent adhesion to paint |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1118024B (en) |
-
1977
- 1977-03-25 IT IT2167077A patent/IT1118024B/en active
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