CA1192326A - Composition for and method of after-treatment of phosphatized metal surfaces - Google Patents
Composition for and method of after-treatment of phosphatized metal surfacesInfo
- Publication number
- CA1192326A CA1192326A CA000388174A CA388174A CA1192326A CA 1192326 A CA1192326 A CA 1192326A CA 000388174 A CA000388174 A CA 000388174A CA 388174 A CA388174 A CA 388174A CA 1192326 A CA1192326 A CA 1192326A
- Authority
- CA
- Canada
- Prior art keywords
- post
- treatment compound
- composition
- solution
- poly
- 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
- 238000011282 treatment Methods 0.000 title claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 43
- 239000002184 metal Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000203 mixture Substances 0.000 title claims description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 29
- 150000003839 salts Chemical class 0.000 claims abstract description 19
- 229920001665 Poly-4-vinylphenol Polymers 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 6
- 150000001299 aldehydes Chemical class 0.000 claims abstract description 3
- 150000002576 ketones Chemical class 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 36
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- CBOIHMRHGLHBPB-UHFFFAOYSA-N hydroxymethyl Chemical group O[CH2] CBOIHMRHGLHBPB-UHFFFAOYSA-N 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000012736 aqueous medium Substances 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 238000007739 conversion coating Methods 0.000 description 10
- 239000003973 paint Substances 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 239000007921 spray Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 235000019256 formaldehyde Nutrition 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000012224 working solution Substances 0.000 description 3
- FUGYGGDSWSUORM-UHFFFAOYSA-N 4-hydroxystyrene Chemical compound OC1=CC=C(C=C)C=C1 FUGYGGDSWSUORM-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007746 phosphate conversion coating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/173—Macromolecular 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
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical Treatment Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US210,910 | 1980-11-28 | ||
| US06/210,910 US4376000A (en) | 1980-11-28 | 1980-11-28 | Composition for and method of after-treatment of phosphatized metal surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1192326A true CA1192326A (en) | 1985-08-20 |
Family
ID=22784810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000388174A Expired CA1192326A (en) | 1980-11-28 | 1981-10-16 | Composition for and method of after-treatment of phosphatized metal surfaces |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4376000A (OSRAM) |
| JP (1) | JPS5914114B2 (OSRAM) |
| KR (1) | KR870001092B1 (OSRAM) |
| AU (1) | AU531432B2 (OSRAM) |
| BR (1) | BR8107689A (OSRAM) |
| CA (1) | CA1192326A (OSRAM) |
| DE (1) | DE3146265A1 (OSRAM) |
| MX (1) | MX161237A (OSRAM) |
| NZ (1) | NZ198671A (OSRAM) |
| ZA (1) | ZA817135B (OSRAM) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433015A (en) * | 1982-04-07 | 1984-02-21 | Parker Chemical Company | Treatment of metal with derivative of poly-4-vinylphenol |
| JPS6022067B2 (ja) * | 1982-09-30 | 1985-05-30 | 日本パ−カライジング株式会社 | 金属表面の皮膜形成方法 |
| CA1267746A (en) * | 1983-05-09 | 1990-04-10 | Andreas Lindert | Treatment of metal with derivative of poly- alkenylphenol |
| GB8412063D0 (en) * | 1984-05-11 | 1984-06-20 | Ciba Geigy Ag | Compositions containing heterocyclic corrosion inhibitors |
| US4673445A (en) * | 1986-05-12 | 1987-06-16 | The Lea Manufacturing Company | Corrosion resistant coating |
| US4795506A (en) * | 1986-07-26 | 1989-01-03 | Detrex Corporation | Process for after-treatment of metals using 2,2-bis(4-hydroxyphenyl)alkyl poly derivatives |
| US4963596A (en) * | 1987-12-04 | 1990-10-16 | Henkel Corporation | Treatment and after-treatment of metal with carbohydrate-modified polyphenol compounds |
| US5039770A (en) * | 1987-12-04 | 1991-08-13 | Henkel Corporation | Treatment and after-treatment of metal with polyphenol compounds |
| US4970264A (en) * | 1987-12-04 | 1990-11-13 | Henkel Corporation | Treatment and after-treatment of metal with amine oxide-containing polyphenol compounds |
| US4978399A (en) * | 1988-01-04 | 1990-12-18 | Kao Corporation | Metal surface treatment with an aqueous solution |
| US4872960A (en) * | 1988-07-18 | 1989-10-10 | Hoechst Celanese Corporation | Protective coatings of a cured hydroxystyrene mannich base and blocked polyisocyantes |
| US5294266A (en) * | 1989-07-28 | 1994-03-15 | Metallgesellschaft Aktiengesellschaft | Process for a passivating postrinsing of conversion layers |
| US5149382A (en) * | 1989-10-25 | 1992-09-22 | Ppg Industries, Inc. | Method of pretreating metal by means of composition containing S-triazine compound |
| US5370909A (en) * | 1990-06-19 | 1994-12-06 | Henkel Corporation | Liquid composition and process for treating aluminum or tin cans to impart corrosion resistance and mobility thereto |
| AU647498B2 (en) * | 1990-06-19 | 1994-03-24 | Henkel Corporation | Liquid composition and process for treating aluminium or tin cans to impart corrosion resistance and reduced friction coefficient |
| GB9101468D0 (en) * | 1991-01-23 | 1991-03-06 | Ciba Geigy | Coating compositions |
| US5147472A (en) * | 1991-01-29 | 1992-09-15 | Betz Laboratories, Inc. | Method for sealing conversion coated metal components |
| US5128211A (en) * | 1991-02-28 | 1992-07-07 | Diversey Corporation | Aluminum based phosphate final rinse |
| US5340687A (en) * | 1992-05-06 | 1994-08-23 | Ocg Microelectronic Materials, Inc. | Chemically modified hydroxy styrene polymer resins and their use in photoactive resist compositions wherein the modifying agent is monomethylol phenol |
| US5550004A (en) * | 1992-05-06 | 1996-08-27 | Ocg Microelectronic Materials, Inc. | Chemically amplified radiation-sensitive composition |
| DE4232292A1 (de) * | 1992-09-28 | 1994-03-31 | Henkel Kgaa | Verfahren zum Phosphatieren von verzinkten Stahloberflächen |
| US5433773A (en) * | 1994-06-02 | 1995-07-18 | Fremont Industries, Inc. | Method and composition for treatment of phosphate coated metal surfaces |
| CA2213824A1 (en) * | 1995-02-28 | 1996-09-06 | Henkel Corporation | Reducing or avoiding surface irregularities in electrophoretic painting of phosphated metal surfaces |
| ES2142619T3 (es) * | 1995-10-18 | 2000-04-16 | Henkel Kgaa | Sellado en caliente de corta duracion de superficies metalicas anodizadas. |
| US5653823A (en) * | 1995-10-20 | 1997-08-05 | Ppg Industries, Inc. | Non-chrome post-rinse composition for phosphated metal substrates |
| US6720032B1 (en) | 1997-09-10 | 2004-04-13 | Henkel Kommanditgesellschaft Auf Aktien | Pretreatment before painting of composite metal structures containing aluminum portions |
| US5891952A (en) * | 1997-10-01 | 1999-04-06 | Henkel Corporation | Aqueous compositions containing polyphenol copolymers and processes for their preparation |
| US6802913B1 (en) | 1997-10-14 | 2004-10-12 | Henkel Kommanditgesellschaft Aut Aktien | Composition and process for multi-purpose treatment of metal surfaces |
| US5972433A (en) * | 1997-12-05 | 1999-10-26 | Calgon Corporation | Method for treatment of metal substrates using Mannich-derived polyethers |
| AU2339599A (en) | 1998-01-27 | 1999-08-09 | Lord Corporation | Aqueous primer or coating |
| CA2318753C (en) | 1998-01-27 | 2007-11-13 | Lord Corporation | Aqueous metal treatment composition |
| US6758916B1 (en) | 1999-10-29 | 2004-07-06 | Henkel Corporation | Composition and process for treating metals |
| US6902766B1 (en) | 2000-07-27 | 2005-06-07 | Lord Corporation | Two-part aqueous metal protection treatment |
| US20050072495A1 (en) * | 2002-11-15 | 2005-04-07 | Jasdeep Sohi | Passivation composition and process for zinciferous and aluminiferous surfaces |
| US6881279B2 (en) * | 2002-12-11 | 2005-04-19 | Henkel Corporation | High performance non-chrome pretreatment for can-end stock aluminum |
| US7670511B2 (en) * | 2004-10-01 | 2010-03-02 | Polyone Corporation | Use of cathodic protection compounds on treated metal articles |
| US7579088B2 (en) * | 2004-12-02 | 2009-08-25 | Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) | Increasing and maintaining the hydrophilic nature of an oxidized plastic surface |
| US7815751B2 (en) * | 2005-09-28 | 2010-10-19 | Coral Chemical Company | Zirconium-vanadium conversion coating compositions for ferrous metals and a method for providing conversion coatings |
| US20100261019A1 (en) * | 2005-10-13 | 2010-10-14 | Shinichiro Sano | Primer Composition and Metal-Rubber Laminate Using the Same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE544061A (OSRAM) * | 1954-12-31 | |||
| US3573997A (en) * | 1968-12-31 | 1971-04-06 | Hooker Chemical Corp | Process for the coating of metal |
-
1980
- 1980-11-28 US US06/210,910 patent/US4376000A/en not_active Expired - Lifetime
-
1981
- 1981-10-15 ZA ZA817135A patent/ZA817135B/xx unknown
- 1981-10-16 CA CA000388174A patent/CA1192326A/en not_active Expired
- 1981-10-16 AU AU76549/81A patent/AU531432B2/en not_active Ceased
- 1981-10-16 NZ NZ198671A patent/NZ198671A/en unknown
- 1981-11-13 MX MX190100A patent/MX161237A/es unknown
- 1981-11-21 DE DE19813146265 patent/DE3146265A1/de active Granted
- 1981-11-26 BR BR8107689A patent/BR8107689A/pt unknown
- 1981-11-27 KR KR1019810004603A patent/KR870001092B1/ko not_active Expired
- 1981-11-27 JP JP56191664A patent/JPS5914114B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| KR870001092B1 (ko) | 1987-06-04 |
| JPS57120677A (en) | 1982-07-27 |
| DE3146265A1 (de) | 1982-06-16 |
| AU7654981A (en) | 1982-05-06 |
| MX161237A (es) | 1990-08-24 |
| US4376000A (en) | 1983-03-08 |
| NZ198671A (en) | 1985-11-08 |
| ZA817135B (en) | 1983-02-23 |
| KR830007878A (ko) | 1983-11-07 |
| BR8107689A (pt) | 1982-08-24 |
| JPS5914114B2 (ja) | 1984-04-03 |
| AU531432B2 (en) | 1983-08-25 |
| DE3146265C2 (OSRAM) | 1991-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |