WO2022023836A1 - A method of manufacturing an interference coating - Google Patents
A method of manufacturing an interference coating Download PDFInfo
- Publication number
- WO2022023836A1 WO2022023836A1 PCT/IB2021/055654 IB2021055654W WO2022023836A1 WO 2022023836 A1 WO2022023836 A1 WO 2022023836A1 IB 2021055654 W IB2021055654 W IB 2021055654W WO 2022023836 A1 WO2022023836 A1 WO 2022023836A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dyeing
- anodizing
- aluminum
- conducted
- product
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 33
- 239000011248 coating agent Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000004043 dyeing Methods 0.000 claims abstract description 34
- 238000007743 anodising Methods 0.000 claims abstract description 33
- 239000003792 electrolyte Substances 0.000 claims abstract description 26
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004327 boric acid Substances 0.000 claims abstract description 10
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims abstract description 10
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000002906 tartaric acid Nutrition 0.000 claims abstract description 9
- 239000011975 tartaric acid Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 55
- 229910052782 aluminium Inorganic materials 0.000 claims description 52
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 22
- -1 aluminum ions Chemical class 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007740 vapor deposition Methods 0.000 claims description 5
- 238000000231 atomic layer deposition Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000008367 deionised water Substances 0.000 description 15
- 229910021641 deionized water Inorganic materials 0.000 description 15
- 238000010586 diagram Methods 0.000 description 10
- 238000005530 etching Methods 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000005238 degreasing Methods 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 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
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- 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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
-
- 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
-
- 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
-
- 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
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
Definitions
- the object of the present invention is a method of manufacturing an interference coating on the surface of an aluminum alloy or aluminum alloys product comprising anodizing and electrochemical dyeing with use of alternating current.
- aluminum alloys Due to the favorable strength to specific weight ratio and the ease of forming, aluminum alloys have gained popularity in many manufacturing industries. Currently, aluminum alloys are widely used in the automotive, construction and food packaging industries. Because of the conditions in which the products operate it is necessary to additionally protect the metal surface against adverse external factors. For some industries, the visual effect is a key factor in the customer's decision to purchase a given product. The growing awareness of the need for sustainable development poses new challenges for engineers working on the development of new coatings. Currently, the market requires meeting all three of the above-mentioned aspects, the coating must meet certain technical requirements, be environment friendly and offer unprecedented visual effects.
- the protection of the aluminum surface can be achieved by anodizing process.
- the process itself is well known and described in the available literature.
- Dyeing process without preceding anodizing step is described in the document US4115212.
- the document discloses electrochemical dyeing process of aluminum alloy objects using an alternating current in an aqueous bath consisting of sulfuric acid and boric acid or only sulfamic acid and salts of metals. The process ends with additional protection of the surface by applying a colorless varnish. The layer, however, has no interference effect.
- the document US4066816 describes anodizing process combined with electrochemical dyeing which results in an interference coating.
- the document describes two-step anodizing in sulfuric acid and in phosphoric acid, which necessitates the rinsing of the elements in order to avoid transfer of the bath between the stages.
- the second anodizing is to enlarge the pores in the oxide layer.
- Synthesis and properties of iridescent Zn- containing anodic aluminum oxide films (Thin Solid Films 586 (2015) 8-12) electrochemical deposition of zinc atoms from a solution of 80 g/L ZnSCL ⁇ 7H2O and 20 g/L H3BO3 was preceded by anodizing in phosphoric acid for at least 10 minutes.
- the document W02019011778 describes a method of manufacturing an iridescent coating on rolled products.
- Anodized thin, porous aluminum oxide layer with a thickness of 15 to 25 nm is dyed with azo, anthraquinone or indigo dyes. This process is completed with a coating obtained by a sol-gel method.
- the layer obtained in this way is characterized by a slight iridescent effect.
- a method of manufacturing an interference coating on the surface of an aluminum alloy or aluminum alloys product comprising anodizing and electrochemical dyeing with use of alternating current according to the present invention is characterized in that, the electrolyte used during electrochemical dyeing comprises copper (II) sulfate (VI) in an amount from 1 to 100 g/L, boric acid in the amount of 1 to 40 g/L and tartaric acid in the amount of 0.1 g to 20 g/L.
- the electrolyte used during electrochemical dyeing comprises copper (II) sulfate (VI) in an amount from 1 to 100 g/L, boric acid in the amount of 1 to 40 g/L and tartaric acid in the amount of 0.1 g to 20 g/L.
- Dyeing is conducted under continuous stirring of electrolyte.
- Time of dyeing is longer than 10 seconds.
- Dyeing is conducted at a temperature 5-40 °C.
- Dyeing is conducted with use of alternating current having voltage in range 0.5-50 V.
- Anodizing is conducted in the solution of sulfuric acid (VI) having concentration of 50 - 500 g/L with the addition of aluminum ions in the amount of 0 - 100 g/L.
- Anodizing is conducted at a current density of 0.1-5 A/dm 2 .
- Anodizing is conducted for 10 - 3600 seconds.
- the product is sealed after dyeing.
- Sealing is conducted by hot or cold hydrothermal or vapor deposition methods.
- Sealing is conducted by vapor deposition method using atomic layer deposition.
- the surface of the aluminum product should be degreased and etched before starting anodizing. This process can take place in baths based on organic solvents, acidic and alkaline water baths. After washing and etching the workpiece, rinse it with deionized water. After excess water has drained off, the aluminum product can be subjected to the process of manufacturing an interference coating.
- the above-described method of preparing the surface of the product can be replaced by another known method. Other alternative methods are available in the state of the art that can ensure adequate surface quality.
- the product After anodizing, the product should be rinsed, preferably in deionized water, and then transferred to the dyeing bath.
- the unquestionable advantage of the method of obtaining the interference coating according to the invention is appropriate selection of the electrolyte components.
- Use of copper (II) sulfate (VI) is much safer in comparison to the previously used electrolytes, e.g. cobalt sulfate (VI) or nickel sulfate (VI), which are suspected of and/or show carcinogenic properties.
- the composition of the electrolyte allows to obtain wide range of color variants in one bath, thus facilitating the technological process, also shortening the time of creating the coating, which is an important economic aspect and is beneficial for the natural environment as it reduces energy consumption.
- fig. 1 illustrates a block diagram of the interference coatings manufacturing process
- fig. 2 cross-section of the aluminum product showing the structure of the coating with light interference.
- the aluminum product After degreasing and etching the surface, the aluminum product is anodized in an aqueous solution of sulfuric acid (VI) having concentration of 150 g/L with the addition of aluminum ions at the level of 1.1 g/L at a temperature of 18°C, under direct current conditions with a current density of 1.1 A/dm 2 .
- VI sulfuric acid
- An aluminum sheet with a surface equal to or greater than that of the aluminum product may be used as the cathode.
- the anodizing time was 200 seconds. After completing the anodizing process, the product should be rinsed in deionized water, and after draining off the excess, next step can be started.
- Electrochemical dyeing is performed using an alternating current of 8 V in an electrolyte containing 15 g/L of copper (II) sulfate (VI), 20 g/L of boric acid and 1 g/L of tartaric acid. During the whole process, the electrolyte temperature is 18°C. A stainless steel counter electrode has a working surface equal to or greater than that of the aluminum product. The electrolyte is constantly stirred and the dyeing time is 120 seconds. After the end of the process, the aluminum product is rinsed in deionized water and then dried.
- the dashed line indicates the optional sealing path for the coating of the aluminum product.
- the aluminum product After degreasing and etching the surface, the aluminum product is anodized in an aqueous solution of sulfuric acid (VI) having concentration of 145 g/L with the addition of aluminum ions at the level of 1 g/L at a temperature of 11°C, under direct current conditions with a current density of 1.2 A/dm 2 .
- VI sulfuric acid
- An aluminum sheet with a surface equal to or greater than that of the aluminum product may be used as the cathode.
- the anodizing time was 250 seconds. After completing the anodizing process, the product should be rinsed in deionized water, and after draining off the excess, next step can be started.
- Electrochemical dyeing is performed using an alternating current of 12 V in an electrolyte containing 13 g/L of copper (II) sulfate (VI), 22 g/L of boric acid and 1.6 g/L of tartaric acid. During the whole process, the electrolyte temperature is 22°C. A stainless steel counter electrode has a working surface equal to or greater than that of the aluminum product. The electrolyte is constantly stirred and the dyeing time is 160 seconds. After the end of the process, the aluminum product is rinsed in deionized water and then dried.
- the block diagram of the interference coating manufacturing process is shown in fig. 1.
- the aluminum product After degreasing and etching the surface, the aluminum product is anodized in an aqueous solution of sulfuric acid (VI) having concentration of 150 g/L with the addition of aluminum ions at the level of 1.1 g/L at a temperature of 18°C, under direct current conditions with a current density of 1.1 A/dm 2 .
- VI sulfuric acid
- An aluminum sheet with a surface equal to or greater than that of the aluminum product may be used as the cathode.
- the anodizing time was 200 seconds. After completing the anodizing process, the product should be rinsed in deionized water, and after draining off the excess, next step can be started.
- Electrochemical dyeing is performed using an alternating current of 8 V in an electrolyte containing 15 g/L of copper (II) sulfate (VI), 22 g/L of boric acid and 1.6 g/L of tartaric acid. During the whole process, the electrolyte temperature is 18 °C. A stainless steel counter electrode has a working surface equal to or greater than that of the aluminum product. The electrolyte is constantly stirred and the dyeing time is 120 seconds. After the end of the process, the aluminum product is rinsed in deionized water and then dried.
- the block diagram of the interference coating manufacturing process is shown in fig. 1.
- the aluminum product After degreasing and etching the surface, the aluminum product is anodized in an aqueous solution of sulfuric acid (VI) having concentration of 120 g/ 1 with the addition of aluminum ions at the level of 1 g/L at a temperature of 18°C, under direct current conditions with a current density of 1.1 A/dm 2 .
- VI sulfuric acid
- An aluminum sheet with a surface equal to or greater than that of the aluminum product may be used as the cathode.
- the anodizing time was 200 seconds. After completing the anodizing process, the product should be rinsed in deionized water, and after draining off the excess, next step can be started.
- Electrochemical dyeing is performed using an alternating current of 8 V in an electrolyte containing 15 g/L of copper (II) sulfate (VI), 20 g/L of boric acid and 1 g/L of tartaric acid.
- the electrolyte temperature is 18°C.
- a stainless steel counter electrode has a working surface equal to or greater than that of the aluminum product.
- the electrolyte is constantly stirred and the dyeing time is 120 seconds. After the end of the process, the aluminum product is rinsed in deionized water and then dried.
- the block diagram of the interference coating manufacturing process is shown in fig. 1.
- the aluminum product After degreasing and etching the surface, the aluminum product is anodized in an aqueous solution of sulfuric acid (VI) having concentration of 150 g/L with the addition of aluminum ions at the level of 1 g/L at a temperature of 20°C, under direct current conditions with a current density of 1.1 A/dm 2 .
- VI sulfuric acid
- An aluminum sheet with a surface equal to or greater than that of the aluminum product may be used as the cathode.
- the anodizing time was 200 seconds. After completing the anodizing process, the product should be rinsed in deionized water, and after draining off the excess, next step can be started.
- Electrochemical dyeing is performed using an alternating current of 8 V in an electrolyte containing 15 g/L of copper (II) sulfate (VI), 20 g/L of boric acid and 1 g/L of tartaric acid. During the whole process, the electrolyte temperature is 22°C. A stainless steel counter electrode has a working surface equal to or greater than that of the aluminum product. The electrolyte is constantly stirred and the dyeing time is 120 seconds. After the end of the process, the aluminum product is rinsed in deionized water and then dried.
- the block diagram of the interference coating manufacturing process is shown in fig. 1.
- the aluminum product After degreasing and etching the surface, the aluminum product is anodized in an aqueous solution of sulfuric acid (VI) having concentration of 120 g/ 1 with the addition of aluminum ions at the level of 1 g/L at a temperature of 21°C, under direct current conditions with a current density of 1.1 A/dm 2 .
- VI sulfuric acid
- An aluminum sheet with a surface equal to or greater than that of the aluminum product may be used as the cathode.
- the anodizing time was 250 seconds. After completing the anodizing process, the product should be rinsed in deionized water, and after draining off the excess, next step can be started.
- Electrochemical dyeing is performed using an alternating current of 8 V in an electrolyte containing 15 g/L of copper (II) sulfate (VI), 20 g/L of boric acid and 1 g/L of tartaric acid. During the whole process, the electrolyte temperature is 25°C. A stainless steel counter electrode has a working surface equal to or greater than that of the aluminum product. The electrolyte is constantly stirred and the dyeing time is 100 seconds. After the end of the process, the aluminum product is rinsed in deionized water and then dried.
- the block diagram of the interference coating manufacturing process is shown in fig. 1.
- the aluminum product manufactured by the method according to the invention has an interference coating.
- Fig. 2 shows a cross-section of such a product showing the structure of a coating in which light interference occurs, where the individual numbers represent:
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Chemical Treatment Of Metals (AREA)
- Coloring (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180049219.9A CN115803483A (en) | 2020-07-29 | 2021-06-25 | Method for producing interference coatings |
EP21752736.5A EP4189147A1 (en) | 2020-07-29 | 2021-06-25 | A method of manufacturing an interference coating |
US18/018,570 US20230357946A1 (en) | 2020-07-29 | 2021-06-25 | Method of manufacturing an interference coating |
CA3183777A CA3183777A1 (en) | 2020-07-29 | 2021-06-25 | A method of manufacturing an interference coating |
CONC2023/0001764A CO2023001764A2 (en) | 2020-07-29 | 2023-02-17 | A method for making an interference coating |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PLP.434839 | 2020-07-29 | ||
PL434839A PL241203B1 (en) | 2020-07-29 | 2020-07-29 | Method of producing an interference coating |
Publications (1)
Publication Number | Publication Date |
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WO2022023836A1 true WO2022023836A1 (en) | 2022-02-03 |
Family
ID=77300930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/IB2021/055654 WO2022023836A1 (en) | 2020-07-29 | 2021-06-25 | A method of manufacturing an interference coating |
Country Status (7)
Country | Link |
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US (1) | US20230357946A1 (en) |
EP (1) | EP4189147A1 (en) |
CN (1) | CN115803483A (en) |
CA (1) | CA3183777A1 (en) |
CO (1) | CO2023001764A2 (en) |
PL (1) | PL241203B1 (en) |
WO (1) | WO2022023836A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2237817A (en) * | 1989-11-08 | 1991-05-15 | Sandoz Ltd | Electrolytic colouring of anodized aluminium |
GB2509335A (en) * | 2012-12-31 | 2014-07-02 | Univ Tartu | Double-structured corrosion resistant coatings and methods of application |
CN105386111B (en) * | 2015-11-05 | 2018-07-13 | 深圳市鑫鸿达清洗技术有限公司 | A kind of method of aluminium alloy electrolytic coloring Chinese red |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES411895A1 (en) * | 1973-02-21 | 1976-01-01 | Iongraf S A | Process for colouring by electro-deposition an anodized aluminium or aluminium alloy article |
JP2013253317A (en) * | 2012-05-08 | 2013-12-19 | Fujifilm Corp | Substrate for semiconductor device, semiconductor device, dimming-type lighting device, self light-emitting display device, solar cell and reflective liquid crystal display device |
-
2020
- 2020-07-29 PL PL434839A patent/PL241203B1/en unknown
-
2021
- 2021-06-25 US US18/018,570 patent/US20230357946A1/en active Pending
- 2021-06-25 WO PCT/IB2021/055654 patent/WO2022023836A1/en active Application Filing
- 2021-06-25 CA CA3183777A patent/CA3183777A1/en active Pending
- 2021-06-25 EP EP21752736.5A patent/EP4189147A1/en active Pending
- 2021-06-25 CN CN202180049219.9A patent/CN115803483A/en active Pending
-
2023
- 2023-02-17 CO CONC2023/0001764A patent/CO2023001764A2/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2237817A (en) * | 1989-11-08 | 1991-05-15 | Sandoz Ltd | Electrolytic colouring of anodized aluminium |
GB2509335A (en) * | 2012-12-31 | 2014-07-02 | Univ Tartu | Double-structured corrosion resistant coatings and methods of application |
CN105386111B (en) * | 2015-11-05 | 2018-07-13 | 深圳市鑫鸿达清洗技术有限公司 | A kind of method of aluminium alloy electrolytic coloring Chinese red |
Also Published As
Publication number | Publication date |
---|---|
CN115803483A (en) | 2023-03-14 |
EP4189147A1 (en) | 2023-06-07 |
CO2023001764A2 (en) | 2023-03-07 |
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