WO2018216714A1 - 無電解めっきの前処理用組成物、無電解めっきの前処理方法、無電解めっき方法 - Google Patents
無電解めっきの前処理用組成物、無電解めっきの前処理方法、無電解めっき方法 Download PDFInfo
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- WO2018216714A1 WO2018216714A1 PCT/JP2018/019776 JP2018019776W WO2018216714A1 WO 2018216714 A1 WO2018216714 A1 WO 2018216714A1 JP 2018019776 W JP2018019776 W JP 2018019776W WO 2018216714 A1 WO2018216714 A1 WO 2018216714A1
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- electroless plating
- pretreatment
- resin material
- acid
- manganese
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
- C23C18/2073—Multistep pretreatment
- C23C18/2086—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
- C23C18/2053—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment only one step pretreatment
- C23C18/206—Use of metal other than noble metals and tin, e.g. activation, sensitisation with metals
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
- C23C18/2053—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment only one step pretreatment
- C23C18/2066—Use of organic or inorganic compounds other than metals, e.g. activation, sensitisation with polymers
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
- C23C18/2073—Multistep pretreatment
- C23C18/208—Multistep pretreatment with use of metal first
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/22—Roughening, e.g. by etching
- C23C18/24—Roughening, e.g. by etching using acid aqueous solutions
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/28—Sensitising or activating
- C23C18/30—Activating or accelerating or sensitising with palladium or other noble metal
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/38—Coating with copper
- C23C18/40—Coating with copper using reducing agents
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/38—Coating with copper
- C23C18/40—Coating with copper using reducing agents
- C23C18/405—Formaldehyde
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- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/42—Coating with noble metals
- C23C18/44—Coating with noble metals using reducing agents
Definitions
- the present invention relates to a pretreatment composition for electroless plating, a pretreatment method for electroless plating, and an electroless plating method.
- resin molded products have been used as automotive parts for the purpose of reducing the weight of automobiles.
- ABS resin, PC / ABS resin, PPE resin, polyamide resin, etc. are used as the resin molded body, and plating such as copper and nickel is applied to give a high-class feeling and aesthetic appearance.
- plating such as copper and nickel is applied to give a high-class feeling and aesthetic appearance.
- a method of forming a conductive circuit by imparting conductivity to a resin substrate a method of forming a plating film such as copper on the resin substrate has been performed.
- a plating film on a resin material such as a resin substrate or resin molded body
- the surface of the resin material is roughened by etching with chromic acid, and then neutralized and pre-diped as necessary.
- a catalyst for electroless plating is applied using a colloidal solution containing a tin compound and a palladium compound, and then an activation treatment (accelerator treatment) is performed to remove tin, and electroless plating and electroplating are performed. Sequential methods are used.
- the above-described method has a problem that it is harmful to the environment and the human body because it uses chromic acid. Moreover, since expensive palladium is used for providing a catalyst, there exists a problem that cost becomes high. Moreover, after performing an etching process, it is necessary to perform a catalyst provision process separately, and there exists a problem that a process increases.
- an aqueous solution containing a metal activator molecular species is contacted with a part to be plated and etched, and then contacted with a solution of a reducing agent capable of reducing the metal activator molecular species.
- a method of metal plating by bringing a part into contact with an electroless plating solution has been proposed (see Patent Document 1).
- Patent Document 1 has a problem in that the activator molecular species component has room for examination and the plating film is not sufficiently formed.
- the present invention has been made in view of the above problems, and can exhibit high plating deposition properties and can reduce the number of steps without using harmful chromic acid and expensive palladium.
- An object of the present invention is to provide an electroless plating pretreatment composition, a pretreatment method, and an electroless plating method.
- the present inventors have conducted a pretreatment composition for electroless plating containing 10 mg / L or more of manganese ions and 10 mg / L or more of monovalent silver ions, According to the pretreatment method and the electroless plating method, the inventors have found that the above object can be achieved, and have completed the present invention.
- the present invention relates to the following electroless plating pretreatment composition, pretreatment method, and electroless plating method.
- a pretreatment composition for electroless plating comprising manganese ions of 10 mg / L or more and monovalent silver ions of 10 mg / L or more.
- Item 2. The pretreatment composition for electroless plating according to Item 1, wherein the manganese valence of the manganese ion is 3 or more.
- Item 3 The pretreatment composition according to Item 1 or 2, wherein the pH is 2 or less. 4).
- a pretreatment method for electroless plating of a resin material Step 1 of bringing the surface to be treated of the resin material into contact with the pretreatment composition,
- the pretreatment composition contains 10 mg / L or more of manganese ions and 10 mg / L or more of monovalent silver ions,
- An electroless plating method for a resin material (1) a step 1 for bringing the surface to be treated of the resin material into contact with the pretreatment composition; and (2) a step 2 for bringing the surface to be treated of the resin material into contact with an electroless plating solution.
- the pretreatment composition contains 10 mg / L or more of manganese ions and 10 mg / L or more of monovalent silver ions, An electroless plating method characterized by the above. 6).
- Item 6 The electroless plating method according to Item 5, wherein the electroless plating solution contains a reducing agent having catalytic activity for silver.
- the pretreatment composition for electroless plating of the present invention high plating deposition can be achieved in electroless plating in a subsequent step without using harmful chromic acid and expensive palladium. Further, according to the pretreatment composition for electroless plating of the present invention, it is not necessary to separately perform the etching step and the catalyst application step, and the number of steps when performing electroless plating can be reduced.
- the surface to be treated is etched by bringing the surface to be treated of the resin material into contact with the composition for pretreatment, and the surface to be treated is treated. Since the silver catalyst can be applied, the surface to be treated of the resin material can be easily treated, and the pretreatment process can be reduced.
- the surface to be treated of the resin material is brought into contact with the composition for pretreatment, so that the surface to be treated is etched, and the surface to be treated is treated. Since the silver catalyst can be applied to the surface, and the catalyst application step and the accelerator treatment step are not required, the surface to be treated of the resin material can be easily treated, and the step for performing electroless plating Can be reduced.
- the electroless plating pretreatment composition of the present invention (hereinafter also simply referred to as “pretreatment composition”) is 10 mg / L or more manganese ion and 10 mg / L or more. Containing monovalent silver ions. Since the pretreatment composition of the present invention contains a specific amount of manganese ions and a specific amount of monovalent silver ions, a decrease in the etching power on the surface to be treated of the resin material is suppressed, and the application of a catalyst is prevented. It will be enough.
- the etching power of manganese ions is reduced by containing palladium ions.
- the pretreatment composition containing chromic acid and silver ions silver chromate (Ag 2 CrO 4 ) precipitates, which are insoluble precipitates in the composition, are generated, and silver ions are discharged out of the system.
- the catalyst is not sufficiently applied.
- the pretreatment composition of the present invention contains manganese ions and monovalent silver ions, the surface to be treated is brought into contact with the electroless plating solution after contacting the surface to be treated of the resin material. By doing so, a plating film with good adhesion can be formed on the surface to be treated.
- the pretreatment composition of the present invention contains manganese ions and monovalent silver ions, etching of the surface to be treated and catalyst application can be performed simultaneously by bringing the surface to be treated of the resin substrate into contact. Therefore, the catalyst application step can be omitted.
- the pretreatment composition of the present invention does not require the use of a palladium-tin colloid solution as in the conventional catalyst application step, and the activation treatment (accelerator treatment) step for removing tin can be omitted. It becomes.
- the pretreatment composition of the present invention it is possible to exhibit high plating deposition properties in electroless plating in the subsequent step without using harmful chromic acid and expensive palladium. Further, according to the pretreatment composition for electroless plating of the present invention, it is not necessary to perform the etching step and the catalyst application step separately, and it is not necessary to perform the accelerator treatment step. This process is greatly shortened.
- Manganese ions are not particularly limited as long as they have oxidizing power.
- the valence of manganese in the manganese ion is preferably 3 or more, more preferably 4 or more, and even more preferably 7.
- the manganese ion contained in the pretreatment composition may be in the form of a single manganese ion such as a trivalent manganese ion or a tetravalent manganese ion, or a manganese ion of a heptavalent manganese. It may be in the state of manganese ions such as permanganate ions.
- a tetravalent manganese ion and a permanganate ion are preferable, and a permanganate ion is more preferable in terms of more excellent etching power.
- manganese ions of divalent manganese have no oxidizing power, and even if used alone, etching of the surface of the resin material does not proceed, but it is used in combination with manganese ions of valence 3 or higher. May be.
- Manganese ions may be used alone or in combination of two or more.
- the manganese salt for imparting manganese ions to the pretreatment composition is not particularly limited.
- manganese (III) phosphate, manganese (IV) oxide, sodium permanganate (VII), and potassium permanganate (VII) are more preferable because they can provide manganese ions with better etching power.
- sodium permanganate (VII) and potassium permanganate (VII) are more preferable.
- Manganese salts may be used alone or in combination of two or more.
- the manganese ion content is 10 mg / L or more.
- the content of manganese ions is preferably 10 mg / L to 100 g / L, more preferably 100 mg / L to 50 g / L, still more preferably 0.2 g / L to 30 g / L, and 0.5 g / L to 15 g / L. Is particularly preferable, and 0.5 g / L to 10 g / L is most preferable.
- the etching power of the pretreatment composition is further improved.
- the upper limit of content of manganese ion into the said range, the production
- the silver ion contained in the pretreatment composition of the present invention is a monovalent silver ion.
- a silver salt for imparting monovalent silver ions it is possible to impart stable monovalent silver ions in a bath when dissolved in the pretreatment composition, and a counter ion that forms a silver salt. Is not particularly limited as long as it does not adversely affect manganese ions. Specific examples include silver sulfate (I), silver nitrate (I), and silver oxide (I). Among these, silver nitrate (I) is preferable because it is highly soluble and easy to use industrially.
- ABS resin acrylonitrile-butadiene-styrene copolymer resin
- PC resin an alloyed resin of a styrene resin and a polycarbonate (PC) resin.
- Silver (I) sulfate is preferred in that the precipitation of plating is good and the adhesion of the plating film is more difficult to decrease.
- Silver salts may be used alone or in combination of two or more.
- the content of monovalent silver ions is 10 mg / L or more.
- the content of monovalent silver ions is preferably 10 mg / L to 20 g / L, more preferably 50 mg / L to 15 g / L, still more preferably 100 mg / L to 10 g / L.
- the upper limit of the content of monovalent silver ions is not less than the above upper limit, there is no adverse effect, but by using the above upper limit, the amount of silver salt used can be suppressed and the cost can be reduced. be able to.
- silver ions monovalent silver obtained by adding metallic silver to an acidic manganese bath and dissolving it may be used. It does not specifically limit as an acid for forming an acidic manganese bath, An inorganic acid and organic sulfonic acid can be used.
- inorganic acids examples include sulfuric acid, phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid, boric acid and the like.
- sulfuric acid is preferable because it is more excellent in wastewater treatment.
- organic sulfonic acids include aliphatic sulfonic acids having 1 to 5 carbon atoms such as methanesulfonic acid, ethanesulfonic acid, propanesulfonic acid, and pentanesulfonic acid; aromatic sulfonic acids such as toluenesulfonic acid, pyridinesulfonic acid, and phenolsulfonic acid. Etc. Among these, aliphatic sulfonic acids having 1 to 5 carbon atoms are preferable from the viewpoint that the bath stability of the pretreatment composition is good.
- the above acids may be used alone or in combination of two or more.
- the acid concentration in the pretreatment composition of the present invention is not particularly limited.
- the total acid concentration is preferably 100 to 1800 g / L, and more preferably 800 to 1700 g / L.
- the pretreatment composition of the present invention may contain a polymer compound in addition to the manganese ion and the silver ion.
- the type of the polymer compound is not particularly limited, and a cationic polymer can be suitably used in that the plating precipitation can be promoted.
- the content of the polymer compound is preferably from 0.01 to 100 g / L, more preferably from 0.1 to 10 g / L.
- the manganese ion, the silver ion, and other components added as necessary are preferably contained in a solvent. It does not specifically limit as said solvent, Water, alcohol, the mixed solvent of water and alcohol, etc. are mentioned.
- the above solvent is preferably water in terms of excellent safety, that is, the pretreatment composition of the present invention is preferably an aqueous solution.
- the alcohol is not particularly limited, and a conventionally known alcohol such as ethanol can be used.
- the alcohol concentration is preferably low, and specifically, the alcohol concentration is preferably about 1 to 30% by mass.
- the pretreatment composition of the present invention is preferably acidic. Since the pretreatment composition is acidic, the etching treatment of the resin material becomes more sufficient.
- the pH of the pretreatment composition of the present invention is preferably 2 or less, and more preferably 1 or less.
- the pretreatment method for electroless plating of a resin material according to the present invention includes a step 1 of bringing a surface to be treated of the resin material into contact with a pretreatment composition,
- the composition for treatment is a pretreatment method of electroless plating containing 10 mg / L or more of manganese ions and 10 mg / L or more of monovalent silver ions.
- Step 1 is a step of bringing the treated surface of the resin material into contact with the pretreatment composition.
- pretreatment composition those described above as the pretreatment composition for electroless plating can be used.
- the method for bringing the treated surface of the resin material into contact with the pretreatment composition is not particularly limited, and may be brought into contact with a conventionally known method.
- Examples of the method include a method of immersing the resin material in the pretreatment composition, a method of spraying the pretreatment composition on the surface to be treated of the resin material, and the like.
- the method of immersing the resin material in the pretreatment composition is preferable in that the contact efficiency is further improved.
- the temperature of the pretreatment composition in Step 1 is not particularly limited, but is preferably 30 to 100 ° C, more preferably 40 to 90 ° C, and further preferably 50 to 80 ° C.
- etching of the surface of the resin material and application of a catalyst become more sufficient.
- membrane external appearance which was further excellent in the decorating property can be obtained by making the upper limit of the temperature of the composition for pretreatment into the said range.
- the contact time between the pretreatment composition and the treated surface of the resin material is preferably 3 to 60 minutes, more preferably 5 to 50 minutes, and further preferably 10 to 40 minutes.
- the resin that forms the resin material to be processed is not particularly limited, and various types of resin materials that have been conventionally etched with a mixed acid of chromic acid-sulfuric acid can be used. A good electroless plating film can be formed.
- the resin forming the resin material include acrylonitrile-butadiene-styrene copolymer resin (ABS resin), a resin in which the butadiene rubber component of the ABS resin is replaced with an acrylic rubber component (AAS resin), and the butadiene rubber component of the ABS resin.
- ABS resin acrylonitrile-butadiene-styrene copolymer resin
- AS resin acrylic rubber component
- Styrene resin such as a resin (AES resin) in which is replaced with an ethylene-propylene rubber component.
- an alloyed resin of the above styrenic resin and polycarbonate (PC) resin (for example, an alloyed resin having a PC resin mixing ratio of about 30 to 70% by mass) can be suitably used.
- PC polycarbonate
- polyphenylene ether resin, polyphenylene oxide resin, polybutylene terephthalate (PBT) resin, polyphenylene sulfide (PPS) resin, polyamide resin, etc. excellent in heat resistance and physical properties can also be used.
- the shape, size, etc. of the resin material are not particularly limited, and according to the pretreatment method of the present invention, a good plating film excellent in decorative properties and physical properties can be formed even on a large resin material having a large surface area. can do.
- large resin materials include radiator grills, wheel caps, medium and small emblems, door handles, and other automotive parts; exterior parts in the electrical and electronic fields; faucet fittings used in water circulation etc. ; Pachinko parts and other gaming machine related products.
- the surface to be processed of the resin material comes into contact with the pretreatment composition, and the surface to be processed is processed.
- a degreasing treatment may be performed before step 1 in order to remove dirt on the surface to be treated of the resin material. It does not specifically limit as a degreasing process, What is necessary is just to perform a degreasing process by a conventionally well-known method.
- post treatment may be performed using a post treatment liquid containing an inorganic acid.
- the inorganic acid is not particularly limited, and examples thereof include hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, and boric acid.
- hydrochloric acid is preferable in terms of excellent manganese removability.
- the above inorganic acids may be used alone or in combination of two or more.
- the content of the inorganic acid in the post-treatment liquid is not particularly limited, and may be about 1 to 1000 g / L.
- the post-treatment method is not particularly limited, and for example, the resin material pre-treated by the pre-treatment method may be immersed in a post-treatment solution having a liquid temperature of about 15 to 50 ° C. for about 1 to 10 minutes.
- a post-treatment solution having a liquid temperature of about 15 to 50 ° C. for about 1 to 10 minutes.
- the surface to be treated of the resin material can be etched, and a silver catalyst can be applied to the surface to be treated, which is high in electroless plating in the subsequent process.
- the precipitation of plating can be shown.
- the electroless plating method of the resin material of the present invention includes (1) a step 1 of bringing a treated surface of the resin material into contact with a pretreatment composition, and (2) of the resin material.
- the process surface 2 is brought into contact with an electroless plating solution, and the pretreatment composition contains 10 mg / L or more of manganese ions and 10 mg / L or more of monovalent silver ions. Is the method.
- Step 1 in the electroless plating method of the resin material of the present invention is the same as the step described as step 1 in the above pretreatment method of electroless plating of the resin material.
- Step 2 is a step of bringing the treated surface of the resin material into contact with the electroless plating solution.
- the method for bringing the treated surface of the resin material into contact with the electroless plating solution is not particularly limited, and may be brought into contact with a conventionally known method.
- a method of immersing the surface to be treated of the resin material in an electroless plating solution is preferable in that the contact efficiency is further improved.
- the electroless plating solution is not particularly limited, and a conventionally known autocatalytic electroless plating solution can be used.
- the electroless plating solution include an electroless nickel plating solution, an electroless copper plating solution, an electroless cobalt plating solution, an electroless nickel-cobalt alloy plating solution, and an electroless gold plating solution.
- the electroless plating solution preferably contains a reducing agent that exhibits catalytic activity against silver as the reducing agent.
- a reducing agent that exhibits catalytic activity against silver as the reducing agent.
- the reducing agent include dimethylamine borane, formalin, glyoxylic acid, tetrahydroboric acid, hydrazine and the like.
- the condition for bringing the surface to be treated of the resin material into contact with the electroless plating solution is not particularly limited.
- the temperature of the electroless plating solution is 20 to 70 ° C.
- the immersion time may be about 3 to 30 minutes.
- the content of the reducing agent in the electroless plating solution is not particularly limited, but is preferably about 0.01 to 100 g / L, more preferably about 0.1 to 10 g / L.
- step 2 may be repeated twice or more as necessary. By repeating step 2 twice or more, two or more electroless plating films are formed.
- an activation treatment with an activation treatment solution containing a reducing agent and / or an organic acid may be performed before the step 2 in order to improve the deposition properties of the electroless plating.
- the reducing agent used for the activation treatment is not particularly limited, and dimethylamine borane, formalin, glyoxylic acid, tetrahydroboric acid, hydrazine, hypophosphite, erythorbic acid, ascorbic acid, hydroxylamine sulfate, hydrogen peroxide, glucose Etc.
- dimethylamine borane, formalin, glyoxylic acid, tetrahydroboric acid, and hydrazine are preferable in that the plating depositability is even better.
- the above reducing agents may be used alone or in combination of two or more.
- the concentration of the reducing agent in the activation treatment liquid is not particularly limited, preferably 0.1 to 500 g / L, more preferably about 1 to 50 g / L, and further preferably 2 to 25 g / L.
- the organic acid used for the activation treatment is not particularly limited.
- formic acid, oxalic acid, glycolic acid, tartaric acid, citric acid, and maleic acid are preferred in that the plating depositability is even better.
- the above organic acids may be used alone or in combination of two or more.
- the concentration of the organic acid in the activation treatment liquid is not particularly limited, preferably 0.1 to 500 g / L, more preferably about 1 to 50 g / L, and further preferably 2 to 25 g / L.
- the activation treatment method is not particularly limited.
- the resin material pretreated in the above step 1 may be immersed in an activation treatment solution having a solution temperature of about 15 to 50 ° C. for about several seconds to 10 minutes.
- an electroplating step may be further provided after the step 2.
- an activation treatment may be performed with an aqueous solution of acid, alkali, etc., and the electroplating may be performed by immersing in an electroplating solution.
- the electroplating solution is not particularly limited, and may be appropriately selected from conventionally known electroplating solutions according to the purpose.
- the electroplating method is not particularly limited.
- a resin material in which an electroless plating film is formed by the above step 2 in an activation treatment liquid having a liquid temperature of about 15 to 50 ° C. has a current density of 0.1 to 10 A / it may be immersed for several seconds to 10 minutes dm 2 about conditions.
- the resin material was immersed in an alkaline degreasing solution (Okuno Pharmaceutical Co., Ltd., Ascreen A-220 bath) at 40 ° C. for 5 minutes and washed with water.
- an alkaline degreasing solution (Okuno Pharmaceutical Co., Ltd., Ascreen A-220 bath) at 40 ° C. for 5 minutes and washed with water.
- additives were added to water as a solvent in the formulations shown in Tables 1 and 2 to prepare pretreatment compositions for Examples and Comparative Examples.
- the resin material after washing with water was immersed in the prepared pretreatment composition under conditions of an immersion temperature of 68 ° C. and an immersion time of 30 minutes.
- an electroless plating film was formed by immersing the resin material in water at 40 ° C. for 10 minutes in an electroless plating solution prepared by adding an additive with the composition shown in Tables 1 and 2 to water as a solvent. .
- the coverage and adhesion of the plating film formed by the above method were evaluated by the following methods.
- Coverage ratio The ratio of the area where the electroless plating film on the surface of the resin material was formed was evaluated as the coverage. When the entire surface of the resin material was coated, the coverage was 100%.
- the plating film formed by immersing in the pretreatment composition of Examples 1 to 5 and then in the electroless plating solution has a coverage of 100% and is sufficiently covered. It has been found that there is no need to increase the coverage by applying a catalyst in the catalyst application step. For this reason, by using the pretreatment composition of the electroless plating of the present invention, the adhesion of the catalyst to the surface of the jig used in forming the electroless plating film is suppressed, and the surface of the jig It was found that the deposition of the plating film was suppressed.
- the plating film deposited on the surface of the jig peels off in a granular shape and is taken into the electroless plating film on the surface of the resin material in each step. Occurrence of unevenness of the electroless plating film on the surface of the resin material is suppressed.
- chromic acid becomes a catalyst poison, which is cured.
- the adhesion of the catalyst to the surface of the tool is suppressed, and the deposition of the plating film on the surface of the jig is suppressed.
- chromic acid is not used in consideration of the environment, etc., the unevenness of the electroless plating film formed on the surface of the resin material described above is caused due to the plating film being deposited on the jig. There is.
- the plating film formed by dipping in the electroless plating solution after dipping in the pretreatment composition of the present invention has a coverage of 100% and is sufficiently covered. There is no need to apply a catalyst by the application step and increase the coverage. For this reason, the adhesion of the catalyst to the surface of the jig used in forming the electroless plating film is suppressed, and the deposition of the plating film on the surface of the jig is suppressed, and the surface of the resin material is formed. The unevenness of the electroless plating film is suppressed.
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Abstract
Description
1.10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有することを特徴とする無電解めっきの前処理用組成物。
2.前記マンガンイオンのマンガンの価数が3以上である、項1に記載の無電解めっきの前処理用組成物。
3.pHが2以下である、項1又は2に記載の前処理用組成物。
4.樹脂材料の無電解めっきの前処理方法であって、
前処理用組成物に、前記樹脂材料の被処理面を接触させる工程1を有し、
前記前処理用組成物は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する、
ことを特徴とする無電解めっきの前処理方法。
5.樹脂材料の無電解めっき方法であって、
(1)前処理用組成物に、前記樹脂材料の被処理面を接触させる工程1、及び
(2)前記樹脂材料の被処理面を、無電解めっき液に接触させる工程2を有し、
前記前処理用組成物は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する、
ことを特徴とする無電解めっき方法。
6.前記無電解めっき液は、銀に対して触媒活性を示す還元剤を含有する、項5に記載の無電解めっき方法。
本発明の無電解めっきの前処理用組成物(以下、単に「前処理用組成物」とも示す。)は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する。本発明の前処理用組成物は、特定量のマンガンイオン及び特定量の1価の銀イオンを含有するので、樹脂材料の被処理面に対するエッチング力の低下が抑制されており、触媒の付与が十分となる。
マンガンイオンは、酸化力を有するものであれば特に限定されない。マンガンイオンのマンガンの価数は3以上が好ましく、4以上がより好ましく、7が更に好ましい。例えば、前処理用組成物に含まれるマンガンイオンは、3価のマンガンイオン、4価のマンガンイオン等の金属イオン単体のマンガンイオンの状態であってもよく、7価のマンガンのマンガンイオンである過マンガン酸イオン等のマンガンイオンの状態であってもよい。これらの中でも、よりエッチング力に優れる点で、4価のマンガンイオン、及び過マンガン酸イオンが好ましく、過マンガン酸イオンがより好ましい。また、2価のマンガンのマンガンイオンは酸化力を有しておらず、単独で使用しても樹脂材料の表面のエッチングは進行しないが、価数3以上のマンガンのマンガンイオンと併用して使用してもよい。
本発明の前処理用組成物が含有する銀イオンは、1価の銀イオンである。1価の銀イオンを付与するための銀塩としては、前処理用組成物中に溶解した際に浴中で安定した1価の銀イオンを付与することができ、銀塩を形成する対イオンがマンガンイオンに悪影響を及ぼさないものであれば特に限定されない。具体的には硫酸銀(I)、硝酸銀(I)、酸化銀(I)が挙げられる。これらの中でも、溶解度が高く工業的に使用し易い点で、硝酸銀(I)が好ましい。また、アクリロニトリル-ブタジエン-スチレン共重合体樹脂(ABS樹脂)、スチレン系樹脂とポリカーボネート(PC)樹脂とのアロイ化樹脂等のめっきが析出し難い樹脂により形成された樹脂材料に対してもより一層めっきの析出性が良好であり、且つ、めっき皮膜の密着性がより一層低下し難い点で、硫酸銀(I)が好ましい。
本発明の前処理用組成物は、上記マンガンイオン及び上記銀イオンの他に、高分子化合物を含んでいてもよい。高分子化合物の種類としては特に限定的されず、めっき析出性を促進できる点で、カチオン性ポリマーを好適に用いることができる。高分子化合物の含有量は、0.01~100g/Lが好ましく、0.1~10g/Lがより好ましい。
本発明の前処理用組成物は、上記マンガンイオン、上記銀イオン、必要に応じて添加される他の成分が、溶媒に含有されることが好ましい。上記溶媒としては特に限定されず、水、アルコール、水とアルコールとの混合溶媒等が挙げられる。
本発明の樹脂材料の無電解めっきの前処理方法は、前処理用組成物に、上記樹脂材料の被処理面を接触させる工程1を有し、上記前処理用組成物は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する無電解めっきの前処理方法である。
工程1は、前処理用組成物に、上記樹脂材料の被処理面を接触させる工程である。
本発明の樹脂材料の無電解めっき方法は、(1)前処理用組成物に、上記樹脂材料の被処理面を接触させる工程1、及び(2)上記樹脂材料の被処理面を、無電解めっき液に接触させる工程2を有し、上記前処理用組成物は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する無電解めっき方法である。
本発明の樹脂材料の無電解めっき方法における工程1は、上述の樹脂材料の無電解めっきの前処理方法における工程1として説明した工程と同一である。
工程2は、上記樹脂材料の被処理面を、無電解めっき液に接触させる工程である。
被めっき物である樹脂材料として、ABS樹脂(UMG ABS(株)製、商標名:UMG ABS3001M)の平板(10cm×5cm×0.3cm、表面積約1dm2)を用意し、以下の方法で無電解めっき皮膜を形成した。
樹脂材料表面の無電解めっき皮膜が形成された面積の割合を被覆率として評価した。樹脂材料表面の全面が被覆された場合を被覆率100%とした。
無電解めっき皮膜が形成された樹脂材料を硫酸銅めっき浴に浸漬し、電流密度3A/dm2、温度25℃の条件で電気めっき処理を120分間行い、銅めっき皮膜を形成し、試料を作製した。当該試料を、80℃で120分間乾燥させ、室温になるまで放置した。次いで、めっき皮膜に10mm幅の切り目を入れ、引っ張り試験器((株)島津製作所製、オートグラフAGS-J 1kN)を用いて、樹脂材料の表面に対して垂直方向にめっき皮膜を引っ張り、ピール強度を測定した。結果を表3に示す。
Claims (6)
- 10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有することを特徴とする無電解めっきの前処理組成物。
- 前記マンガンイオンのマンガンの価数が3以上である、請求項1に記載の無電解めっきの前処理用組成物。
- pHが2以下である、請求項1又は2に記載の前処理用組成物。
- 樹脂材料の無電解めっきの前処理方法であって、
前処理用組成物に、前記樹脂材料の被処理面を接触させる工程1を有し、
前記前処理用組成物は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する、
ことを特徴とする無電解めっきの前処理方法。 - 樹脂材料の無電解めっき方法であって、
(1)前処理用組成物に、前記樹脂材料の被処理面を接触させる工程1、及び
(2)前記樹脂材料の被処理面を、無電解めっき液に接触させる工程2を有し、
前記前処理用組成物は、10mg/L以上のマンガンイオン及び10mg/L以上の1価の銀イオンを含有する、
ことを特徴とする無電解めっき方法。 - 前記無電解めっき液は、銀に対して触媒活性を示す還元剤を含有する、請求項5に記載の無電解めっき方法。
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US16/493,480 US20200407854A1 (en) | 2017-05-23 | 2018-05-23 | Composition for pretreatment for electroless plating, pretreatment method for electroless plating, and electroless plating method |
PL18806217.8T PL3584352T3 (pl) | 2017-05-23 | 2018-05-23 | Sposób platerowania bezprądowego |
CN202410208179.3A CN118064879A (zh) | 2017-05-23 | 2018-05-23 | 无电解镀的前处理用组合物、无电解镀的前处理方法、无电解镀方法 |
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EP18806217.8A EP3584352B1 (en) | 2017-05-23 | 2018-05-23 | Electroless plating method |
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- 2018-05-23 CN CN201880028555.3A patent/CN110573657A/zh active Pending
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CN110573657A (zh) | 2019-12-13 |
MY176735A (en) | 2020-08-20 |
CN113373432A (zh) | 2021-09-10 |
JPWO2018216714A1 (ja) | 2019-06-27 |
EP3584352B1 (en) | 2023-06-21 |
CN117904611A (zh) | 2024-04-19 |
PT3584352T (pt) | 2023-07-26 |
KR20200134345A (ko) | 2020-12-01 |
EP3584352A4 (en) | 2021-01-06 |
US20200407854A1 (en) | 2020-12-31 |
ES2953783T3 (es) | 2023-11-16 |
JP6482049B1 (ja) | 2019-03-13 |
PL3584352T3 (pl) | 2023-09-25 |
KR20190137146A (ko) | 2019-12-10 |
KR102366687B1 (ko) | 2022-02-23 |
CN118064879A (zh) | 2024-05-24 |
EP3584352A1 (en) | 2019-12-25 |
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