WO2013146293A1 - 銀めっき塗装体 - Google Patents
銀めっき塗装体 Download PDFInfo
- Publication number
- WO2013146293A1 WO2013146293A1 PCT/JP2013/057175 JP2013057175W WO2013146293A1 WO 2013146293 A1 WO2013146293 A1 WO 2013146293A1 JP 2013057175 W JP2013057175 W JP 2013057175W WO 2013146293 A1 WO2013146293 A1 WO 2013146293A1
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- WO
- WIPO (PCT)
- Prior art keywords
- silver
- layer
- resin
- coated body
- plated
- Prior art date
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Classifications
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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
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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
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
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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
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1655—Process features
- C23C18/1658—Process features with two steps starting with metal deposition followed by addition of reducing agent
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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
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1655—Process features
- C23C18/166—Process features with two steps starting with addition of reducing agent followed by metal deposition
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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
- C23C18/28—Sensitising or activating
- C23C18/285—Sensitising or activating with tin based compound or composition
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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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0084—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/185—Processes for applying liquids or other fluent materials performed by dipping applying monomolecular layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/60—Adding a layer before coating
- B05D2350/65—Adding a layer before coating metal layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31511—Of epoxy ether
- Y10T428/31529—Next to metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31605—Next to free metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- the present invention relates to a silver-plated coated body having a silver thin film layer on a substrate.
- a silver-plated coated body having a silver thin film layer on a base material such as metal or plastic is used as a design material or a reflective material.
- the silver-plated coated body is a material that can be effectively used, for example, as an electromagnetic shielding material by utilizing the high conductivity of the silver thin film layer.
- silver has high reactivity with sulfides, it is prone to discoloration such as whitening and blackening, and because it is very soft, its surface is easily damaged.
- the coated body has not yet been put to practical use in a wide range of industrial products.
- Patent Document 1 describes that a liquid epoxy resin, an unsaturated polyester resin, a fluororesin, an acrylic resin, a melamine resin, or a silicon resin can be used for the topcoat layer
- Patent Document 2 Patent Document 3 and the like can be used.
- Patent Document 4 describes that an ultraviolet curable resin or an electron beam curable resin may be used for the topcoat layer.
- the silver thin film layer has high hydrophilicity, and therefore, when exposed to a high-temperature and high-humidity environment, particularly in an atmosphere containing salt water, the silver thin film layer and the topcoat layer There was a problem that the adhesive strength became very weak.
- Patent Document 7 the surface of a copper base material is pretreated with an acidic liquid containing thiourea or a derivative thereof, and then subjected to electroless tin plating or solder plating.
- Patent Document 8 discloses a metal surface coating composition containing a cationic resin and / or an amphoteric resin and an organic sulfur compound such as a thiourea analog. Are listed.
- an object of this invention is to provide the silver plating coating body excellent in adhesiveness and discoloration prevention property.
- the object of the present invention is to provide a silver-plated coated body having at least a silver thin film layer and a topcoat layer on a substrate, at least one selected from thiourea and a thiourea derivative, a thiol organic acid, and a thiol.
- a silver-plated coated body containing at least one selected from organic acid derivatives.
- at least one selected from a thiol organic acid and a thiol organic acid derivative is preferably at least one selected from a mercaptopropionic acid derivative and a thioglycolic acid derivative
- the topcoat layer is further a silane coupling agent. It is preferable to contain.
- an undercoat layer containing a urethane resin and an epoxy resin between the base material and the silver thin film layer is preferable to have an undercoat layer containing a urethane resin and an epoxy resin between the base material and the silver thin film layer.
- the content ratio of urethane resin and epoxy resin in the undercoat layer is preferably 45:55 to 75:25 (mass ratio).
- it has an undercoat layer between the base material and the silver thin film layer, and at least one of the undercoat layer and the topcoat layer has a thiol group and a hydrophobic group and has an octanol / water partition coefficient (LogP). It is preferable to contain 3.5 or more heterocyclic compounds.
- the silver-plated coated body of the present invention has at least a silver thin film layer and a topcoat layer on a substrate.
- the topcoat layer of the present invention preferably contains a resin such as a thermosetting resin or an ultraviolet curable resin.
- the top coat layer is at least one selected from thiourea and thiourea derivatives (hereinafter referred to as thioureas) and at least one selected from thiol organic acids and thiol organic acid derivatives. (Hereinafter referred to as thiol organic acids).
- thioureas act on silver and cause discoloration such as blackening.
- the present inventor has added a thiourea that causes discoloration when used alone to the top coat layer, and a thiol organic acid in combination, so that the silver thin film layer and the top coat layer can be used without changing the color of silver. It has been found that the adhesion of can be greatly improved.
- thiourea is a compound represented by H 2 N—C ( ⁇ S) —NH 2 and is also called thiocarbamide.
- examples of thiourea derivatives include 1-methylthiourea, 1,3-dimethylthiourea, diethylthiourea (for example, 1,3-diethylthiourea), trimethylthiourea, 1,3- Diisopropylthiourea, allylthiourea, acetylthiourea, ethylenethiourea, 1,3-diphenylthiourea, thiourea dioxide, thiosemicarbazide, S-methylisothiourea sulfate, tributylthiourea, benzylisothiourea hydrochloride, 1,3-dibutylthio Examples include urea, 1-naphthyl
- the thiol organic acid is an organic acid having one or more thiol groups.
- the thiol organic acid derivative is a derivative of an organic acid having one or more thiol groups, and preferably a derivative of a carboxylic acid having one or more thiol groups.
- thiol organic acids used in the present invention include thiol compounds such as thiomalic acid, 2-mercaptoethyloctanoic acid ester and 2-mercaptopropionic acid; 3-mercaptopropionic acid, methoxybutyl mercaptopropionic acid, and octyl mercaptopropionic acid.
- Mercaptopropionic acid derivatives such as tridecyl mercaptopropionate, trimethylolpropane tristhiopropionate, pentaerythritol tetrakisthiopropionate; thioglycolic acid, ammonium thioglycolate, monoethanolamine thioglycolate, methyl thioglycolate, Octyl thioglycolate, methoxybutyl thioglycolate, ethylene glycol bisthioglycolate, butanediol bisthioglycolate, trimethyl Lumpur propane tris thioglycolate, thioglycolic acid derivatives such as pentaerythritol tetrakis thioglycolate and the like, which can also be commercially available.
- at least one selected from mercaptopropionic acid derivatives and thioglycolic acid derivatives is preferable.
- Thioureas are contained in the topcoat layer in combination of one or more, but the total content of thioureas is 0.1 to 5% by mass with respect to the resin solid content contained in the topcoat layer. It is preferably 0.5 to 3% by mass.
- the thiol organic acids are contained in the topcoat layer in combination of one or more, and the content is 1 to 20% by mass with respect to the resin solid content contained in the topcoat layer as the total amount of thiol organic acids. It is preferably 5 to 10% by mass.
- the topcoat layer preferably further contains a silane coupling agent in addition to thioureas and thiol organic acids.
- a silane coupling agent By adding a silane coupling agent, the adhesion after the salt spray test and the discoloration prevention after the heat resistance test are further improved.
- silane coupling agent used in the present invention conventionally known silane coupling agents can be used.
- the content of the silane coupling agent in the topcoat layer is preferably 1 to 30% by mass with respect to the resin solid content contained in the topcoat layer as the solid content combined with thioureas and thiol organic acids. More preferably, it is ⁇ 20% by mass.
- the top coat layer is preferably provided directly on the silver thin film layer.
- thermosetting resin contained in the topcoat layer examples include liquid epoxy resins, unsaturated polyester resins, fluororesins, acrylic resins, melamine resins, and silicon resins described in JP-A No. 2000-129448, Examples thereof include an acrylic silicone resin described in JP-A-155580, a two-component curable polyurethane resin described in JP-A-2002-256445, and an acrylic-modified silicone resin.
- thermosetting resins for example, “PTC-02UH (10B)” (acrylic silicon-based resin) manufactured by Fujikura Kasei, “Origid Tsuk # 100” (acrylic silicon-based resin) manufactured by Origin Electric, Ohashi Chemical “High Polynal No. 800S” (acrylic silicone resin), “Omak No. 100 (E) Clear FV” (acrylic silicone resin), “Neohard Clear H” (high hardness acrylic resin), etc. manufactured by Kogyo Preferably used.
- an ultraviolet curable resin when used for the top coat layer, the time required for the production process can be shortened.
- a monomer and an oligomer compound which are curable with ultraviolet rays and mainly have an ethylenically unsaturated group are preferably used, and an electron beam curable resin is also included.
- Specific examples include amide monomers, (meth) acrylate monomers, urethane acrylates, polyester (meth) acrylates, and epoxy (meth) acrylates.
- the amide monomer include amide compounds such as N-vinylpyrrolidone, N-vinylcaprolactam, and acryloylmorpholine.
- Examples of (meth) acrylate monomers include hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and 2-hydroxy-3-phenylpropyl acrylate; phenoxyethyl (meth) ) Acrylates of phenol alkylene oxide adducts such as acrylates and their halogen nucleus substitutions; ethylene glycol mono or di (meth) acrylate, methoxyethylene glycol mono (meth) acrylate, tetraethylene glycol mono or di ( Mono- or di (meth) acrylates of glycol, such as meth) acrylate, mono- or di (meth) acrylate of tripropylene glycol; trimethylolpropane tri (meth) acrylate (Meth) acrylic ester of polyol and its alkylene oxide such as pentaerythritol tri (meth) acrylate, pentaerythr
- Examples of the urethane (meth) acrylate oligomer include a reaction product obtained by further reacting a hydroxyl group-containing (meth) acrylate with a polyol and an organic polyisocyanate reaction product.
- examples of the polyol include a low molecular weight polyol, a polyether polyol, and a polyester polyol.
- examples of the low molecular weight polyol include ethylene glycol, propylene glycol, cyclohexane dimethanol, and 3-methyl-1,5-pentanediol.
- Examples of the polyether polyol include polyethylene glycol and polypropylene glycol.
- the organic polyisocyanate include tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and the like.
- the hydroxyl group-containing (meth) acrylate include hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate and 2-hydroxypropyl (meth) acrylate.
- polyester (meth) acrylate oligomer examples include a dehydration condensate of polyester polyol and (meth) acrylic acid.
- polyester polyol include low molecular weight polyols such as ethylene glycol, polyethylene glycol, cyclohexanedimethanol, 3-methyl-1,5-pentanediol, propylene glycol, polypropylene glycol, 1,6-hexanediol, trimethylolpropane, and the like.
- Epoxy acrylate is obtained by addition reaction of unsaturated carboxylic acid such as (meth) acrylic acid to epoxy resin.
- Epoxy (meth) acrylate of bisphenol A type epoxy resin, epoxy (meth) of phenol or cresol novolac type epoxy resin examples thereof include (meth) acrylic acid addition reactants of acrylate and polyether diglycidyl ether.
- photopolymerization initiators include benzoin and its alkyl ethers such as benzoin, benzoin methyl ether, benzoin ethyl ether, and benzoin isopropyl ether; acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxy-2- Acetophenones such as phenylacetophenone, 1,1-dichloroacetophenone, 1-hydroxyacetophenone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-propan-1-one; Anthraquinones such as 2-methylanthraquinone, 2-ethylanthraquinone, 2-tert-butylanthraquinone, 1-chloroanthraquinone, 2-amylanthraquinone; 2,
- the amount of the photopolymerization initiator used is preferably 0.01 to 20% by mass and more preferably 0.5 to 7% by mass with respect to the ultraviolet curable resin.
- the topcoat layer composition containing an ultraviolet curable resin In order to cure the topcoat layer composition containing an ultraviolet curable resin, it is only necessary to heat or irradiate an electron beam, ultraviolet ray, etc.
- means for irradiating the electron beam, ultraviolet ray include xenon lamps, halogen lamps
- the lamp light source include tungsten lamps, high-pressure mercury lamps, ultra-high pressure mercury lamps, metal halide lamps, medium-pressure mercury lamps, and low-pressure mercury lamps, and laser light sources such as argon ion lasers, YAG lasers, excimer lasers, and nitrogen lasers.
- the thickness of the topcoat layer containing the thermosetting resin is preferably in the range of 10 to 25 ⁇ m, and the thickness of the topcoat layer containing the ultraviolet curable resin is preferably in the range of 3 to 10 ⁇ m.
- the above-mentioned top coat layer may be used in combination with a coloring material and an additive.
- the colorant added to the topcoat layer can be color-tuned by further containing a colorant such as a pigment or dye.
- a colorant such as a pigment or dye.
- the absorption wavelength of the color material does not include the absorption wavelength of the photopolymerization initiator because it does not hinder the activity of the photopolymerization initiator.
- pigments include organic pigments such as carbon black, quinacridone, naphthol red, cyanine blue, cyanine green, and hansa yellow; inorganics such as titanium oxide, aluminum oxide, calcium carbonate, barium sulfate, mica, petal, and composite metal oxides.
- Examples thereof include, but are not limited to, pigments.
- One or a combination of two or more selected from these pigments can be used.
- the means for dispersing the pigment is not particularly limited.
- a method of directly dispersing the pigment powder by a conventional method such as dyno mill, paint shaker, sand mill, ball mill, kneader, roll, dissolver, homogenizer, ultrasonic vibration, stirrer, etc. Is used.
- a dispersant, a dispersion aid, a thickener, a coupling agent and the like are examples thereof include, but are not limited to, pigments.
- a method of directly dispersing the pigment powder by a conventional method such as dyno mill, paint shaker, sand mill, ball mill, kneader, roll, dissolver, homogenizer, ultrasonic vibration, stirrer, etc.
- the addition amount of the pigment is not particularly limited because the concealability varies depending on the type of the pigment, but for example, 0.01 to 10% by mass with respect to the resin solid content in the total amount of each composition forming the topcoat layer Is preferable, and 0.1 to 5% by mass is more preferable.
- dyes examples include azo, anthraquinone, indoidoid, sulfide, triphenylmethane, xanthene, alizarin, acridine, quinoneimine, thiazole, methine, nitro, and nitroso dyes. Although it is mentioned, it is not limited to these. One or a combination of two or more selected from these dyes can be used.
- the amount of the dye added is not particularly limited because the concealability varies depending on the type of the dye. For example, 0.01 to 10% by mass relative to the resin solid content in the total amount of each composition forming the topcoat layer. Is preferable, and 0.1 to 5% by mass is more preferable.
- the top coat layer may further contain a leveling agent, metal powder, glass powder, antibacterial agent, antioxidant, ultraviolet absorber and the like as additives.
- a method for providing the topcoat layer it is common to dissolve each composition in an organic solvent and apply it as a paint.
- a coating method a conventionally known coating method may be used. For example, a gravure roll method, a reverse roll method, a dip roll method, a bar coater method, a die coater method, a curtain coater method, a knife coater method, an air spray method, an airless spray. Any method such as a method or a dip method can be used.
- organic solvent examples include cyclohexane, hydrocarbons such as “Solvesso 100” manufactured by Exxon Chemical; alcohols such as methanol, ethanol, isopropyl alcohol, butyl alcohol, and cyclohexanol; ethyl acetate, acetic acid-n-butyl, acetic acid Isobutyl, amyl formate, isoamyl acetate, isobutyl acetate, butyl propionate, isopropyl butyrate, ethyl butyrate, butyl butyrate, alkyl esters, methyl lactate, ethyl lactate, methyl oxyacetate, ethyl oxyacetate, butyl oxyacetate, methyl methoxyacetate, Esters such as ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate; tetrahydr
- plastics include polycarbonate resins, acrylic resins, acrylonitrile butadiene styrene (ABS) resins, vinyl chloride resins, epoxy resins, phenol resins, polyethylene terephthalate (PET) resins, polyester resins such as polybutylene terephthalate (PBT) resins, Specific examples include fluororesin, polyethylene (PE) resin, polypropylene (PP) resin, and composites thereof, and fiber reinforced plastic (FRP) reinforced with organic fibers such as nylon fiber and pulp fiber. Is not to be done.
- ABS acrylonitrile butadiene styrene
- PVT polyethylene terephthalate
- PBT polybutylene terephthalate
- FRP fiber reinforced plastic
- the metal examples include, but are not particularly limited to, iron, aluminum, stainless steel, copper, brass, and the like and those subjected to surface treatment such as rust prevention of these metals.
- the glass is not particularly limited, such as inorganic glass or plastic glass.
- an undercoat layer, an easy-adhesion layer, a rust prevention layer, a colored layer, and the like may be provided on these various substrates by applying an organic solvent, primer coating, powder coating, electrodeposition coating, or the like.
- wet treatment such as detergent cleaning, solvent cleaning, ultrasonic cleaning, etc. for removing substances that impair adhesion is preferably performed.
- dry treatment such as corona treatment, ultraviolet irradiation, electron beam irradiation treatment, and the like may be performed.
- an undercoat layer is not necessarily required, but it is an effective means to improve the roughness of the substrate surface in order to utilize the good reflectance of the silver thin film layer. It is desirable to provide an undercoat layer on the substrate. In that case, it is requested
- the undercoat layer examples include a polyol-based paint in which a polymer or oligomer having a terminal hydroxyl group and an isocyanate compound as a curing agent, such as alkyd polyol, polyester polyol, and acrylic polyol, and an epoxy in which an amine compound is mixed as a curing agent with an epoxy resin.
- a system paint or the like is selected based on the properties required for the substrate and the coated body.
- the thickness of the undercoat layer is preferably 5 to 30 ⁇ m, but is not particularly limited.
- the undercoat layer of the present invention preferably contains a urethane resin and an epoxy resin.
- the urethane resin contained in the undercoat layer of the present invention includes polymers or oligomers having terminal hydroxyl groups such as alkyd polyols, polyester polyols, acrylic polyols, polyether polyols, polycarbonate polyols, polycaprolactone polyols, and isocyanates as curing agents.
- the urethane resin obtained by mixing a compound is mentioned. Of these, urethane resins obtained by mixing acrylic polyols and isocyanate compounds are preferred.
- biuret type, isocyanurate type, adduct type and bifunctional type isocyanate can be used as the isocyanate compound used as the curing agent.
- biuret-type isocyanate compounds such as “DURANATE 24A-100 (trade name)”, “22A-75P (trade name)”, “21S-75E (trade name)” manufactured by Asahi Kasei. be able to.
- the urethane resin described above can also be obtained by using a commercially available product.
- a urethane resin obtained by mixing an acrylic polyol and an isocyanate compound preferably used in the present invention for example, “Ohashi Chemical Industries” “Mirror Shine Undercoat Clear D-1 (trade name)”, “Under Black No. 128 (trade name)” or the like can be used.
- epoxy resin contained in the undercoat layer of the present invention glycidyl ether type epoxy resin, glycidyl ester type epoxy resin, glycidyl amine type epoxy resin and the like can be used, and glycidyl ether type epoxy resin is preferable.
- glycidyl ether type epoxy resin bisphenol A type, bisphenol F type, bisphenol S type and novolac type can be used, and bisphenol A type epoxy resin is particularly preferable.
- the epoxy equivalent of the epoxy resin is preferably from 100 to 800, more preferably from 200 to 600. If the epoxy equivalent of the epoxy resin is less than 100 or exceeds 800, sufficient adhesion may not be obtained between the undercoat layer and the silver thin film layer.
- epoxy resin examples include “Glicier BPP-350 (trade name)” (epoxy equivalent 340) manufactured by Sanyo Chemical Industries, “850-S (trade name)” (epoxy equivalent 183 to 193) manufactured by DIC, ADEKA “Adeka Resin EP-4000 (trade name)” (epoxy equivalent 320), “Adeka Resin EP-4005 (trade name)” (epoxy equivalent 510), and the like can be used.
- the content ratio of the urethane resin and the epoxy resin described above there is a preferable range for the content ratio of the urethane resin and the epoxy resin described above, and the content of (urethane resin content) to (epoxy resin content) is 40:60 to 80:20 ( (Mass ratio) is preferable, and 45:55 to 75:25 (mass ratio) is more preferable.
- the undercoat layer of the present invention is not limited to the above-described urethane resin and epoxy resin, but, for example, polyvinyl chloride, polycarbonate, polystyrene, polymethyl methacrylate, polyester, polysulfone, polyphenylene oxide, polybutadiene, poly (N-vinylcarbazole), carbonized Contains other resins such as hydrogen resin, ketone resin, phenoxy resin, polyamide, ethyl cellulose, vinyl acetate, ABS resin, melamine resin, urea resin, benzoguanamine resin, unsaturated polyester resin, alkyd resin, silicon resin alkoxytitanium ester be able to.
- the content of the other resin is preferably 30% by mass or less of the total amount of the urethane resin and the epoxy resin, and more preferably 25% by mass or less.
- the undercoat layer preferably contains a curing agent in addition to the urethane resin and epoxy resin described above.
- a curing agent epoxy compounds, oxazoline compounds, aziridine compounds, isocyanate compounds, amine compounds, mercaptan compounds, imidazole compounds, acid anhydrides, and the like can be used.
- isocyanate compounds are preferably used, and such compounds are commercially available as a curing agent for under clear-N from Ohashi Chemical Industry in addition to the commercial products exemplified as the isocyanate compounds for obtaining the urethane resin described above. Can be used.
- the content of the curing agent in the undercoat layer is preferably 5 to 30% by mass with respect to the total amount of the urethane resin and the epoxy resin.
- a curing accelerator may be added to the undercoat layer to improve the surface quality of the undercoat layer surface.
- a leveling agent may be added.
- Urethane curing accelerators include "urethane curing accelerator” manufactured by Nagashima, "drying accelerator A” manufactured by Sansei Paint Industry, and urethane curing from Nitto Bussan, San Apro, Nippon Chemical Industry and Mitsubishi Chemical. 1,8-diazabicyclo [5,4,0] undecene-7 and 1,5-diazabicyclo [4,3,0] nonene-5 phenol salts, oleates and octylates which are commercially available as agents Can be used.
- the curing accelerator for the epoxy resin various amines commercially available from San Apro can be used.
- As a leveling agent a silicon leveling agent, a fluorine leveling agent, etc.
- the amount of the curing accelerator used is preferably 0.1 to 2% by mass, more preferably 0.3 to 1% by mass, based on the amount of the resin composition in the undercoat layer.
- the amount of the leveling agent used is preferably 0.001 to 1% by mass, more preferably 0.005 to 0.05% by mass, based on the amount of the resin composition in the undercoat layer.
- an undercoat layer it is common to dissolve the above-described composition in an organic solvent and apply it as a paint.
- organic solvent the same organic solvents that can be used when the above-mentioned topcoat layer is provided can be used.
- a coating method a conventionally known coating method can be used in the same manner as the top coat layer.
- the silver-plated coated body of the present invention contains a heterocyclic compound in which at least one of the undercoat layer and the topcoat layer has a thiol group and a hydrophobic group and has an octanol / water partition coefficient (Log P) of 3.5 or more. It is preferable to do.
- the octanol / water partition coefficient can be easily calculated by the Crippen method.
- the hydrophobic group includes an alkyl group, an alkylene group, and an aryl group, and these may have a substituent, and the alkyl group or the alkylene group may be branched.
- the alkyl group include methyl group, ethyl group, butyl group, isopropyl group, n-hexyl group, n-heptyl group, n-octyl group, n-decyl group, n-tetradecyl group, n-hexadecyl group and the like.
- Examples of the alkylene group include these divalent groups.
- Preferred alkyl groups and alkylene groups are those having 4 or more carbon atoms.
- aryl group examples include a phenyl group and a naphthyl group. These hydrophobic groups are preferably bonded to a heterocyclic ring, and are preferably bonded to the heterocyclic ring via a sulfur, nitrogen, oxygen atom or the like.
- the aryl group may be condensed with a heterocyclic ring serving as a mother nucleus. Further, these alkyl group, alkylene group, and aryl group may further have the above-described alkyl group or aryl group as a substituent via a sulfur, nitrogen, oxygen atom or the like.
- a heterocyclic compound having a thiol group and a hydrophobic group and having LogP of 3.5 or more is a compound having LogP of 3.5 or more by having these hydrophobic groups, and LogP is 4.0. More preferably.
- heterocyclic ring examples include imidazole, imidazolidine, imidazoline, oxadiazole, oxazine, thiadiazole, thiazole, thiazolidine, tetrazole, triazine, triazole, piperazine, piperidine, pyrazine, pyrazole, pyrazolidine, pyridine, pyridazine, pyrimidine, pyrrole, Pyrrolidine is mentioned.
- Particularly preferred heterocycles are oxadiazole, thiadiazole, and triazole.
- a heterocyclic compound having a thiol group and a hydrophobic group and having a Log P of 3.5 or more may have a plurality of these heterocyclic rings in one molecule, and in that case, an alkylene group connects a plurality of heterocyclic rings. Or an alkylene group may connect a plurality of heterocycles via sulfur, nitrogen, oxygen atoms or the like.
- heterocyclic compound having a thiol group and a hydrophobic group and having a Log P of 3.5 or more are shown below, but the present invention is not limited thereto.
- the LogP values shown in the figure were calculated by the Crippen method.
- a heterocyclic compound having a thiol group and a hydrophobic group and having a Log P of 3.5 or more can be contained in at least one of the undercoat layer and the topcoat layer in combination of one or more, and the content thereof
- the total amount of heterocyclic compounds having a thiol group and a hydrophobic group and having a Log P of 3.5 or more is 0.01 to 40% by mass with respect to the resin solid content contained in the topcoat layer or undercoat layer. Is preferable, and 0.1 to 10% by mass is more preferable.
- a silver thin film layer may be provided directly on various substrates, or a silver thin film layer may be provided on the above-described undercoat layer.
- the silver thin film layer is preferably provided by a silver mirror plating method using a silver mirror reaction because it has good reflection gloss.
- a method for forming a silver thin film layer a case where a silver thin film layer is generally formed on the surface of an undercoat layer by a silver mirror plating method will be described as an example.
- the surface of the undercoat layer provided on the substrate is treated with an active treatment solution for silver mirror containing stannous chloride, so that stannous ions are converted into the surface of the undercoat layer.
- an active treatment solution for silver mirror containing stannous chloride so that stannous ions are converted into the surface of the undercoat layer.
- a silver thin film layer is formed on the activated undercoat layer by a silver mirror reaction.
- a treatment method for treating the undercoat layer with an active treatment liquid for silver mirror containing stannous chloride a method of immersing a substrate provided with an undercoat layer in an active treatment liquid for silver mirror, on the surface of the undercoat layer
- an active treatment liquid for silver mirror containing stannous chloride and the like is a method of applying an active treatment liquid for silver mirror containing stannous chloride and the like.
- coating method the spray application which does not choose the shape of a base material especially is suitable.
- Examples of the active treatment solution for silver mirrors containing stannous chloride include, for example, Metal Surface Technology Handbook (edited by Metal Surface Technology Association, published by Nikkan Kogyo Shimbun, 1977), Japanese Patent Publication No. 02-14431, and Japanese Patent Laid-Open No. 11-335858. JP, 2003-13240, JP 2003-129249, JP 2006-11912, JP 2006-11914, JP 2006-274400, 2007-197743. Etc., and the like.
- a step of performing an activation treatment with silver ions may be provided after the step of treating with the silver mirror activation treatment solution.
- the activation treatment with silver ions for example, treatment with a treatment solution containing silver nitrate is simple and preferable.
- the silver nitrate concentration of the aqueous silver nitrate solution used in this step is preferably a dilute solution of 0.01 mol / L or less and then brought into contact with the undercoat layer treated with stannous chloride.
- spray coating in which a new solution is always supplied is suitable.
- the silver thin film layer is formed by silver mirror reaction on the surface of the undercoat layer that has been subjected to the above activation treatment with two solutions of an ammoniacal silver nitrate solution containing silver nitrate and ammonia and a reducing agent solution containing a reducing agent and a strong alkali component. Apply to mix. As a result, an oxidation-reduction reaction occurs, so that metallic silver is deposited, and a silver coating is formed on the surface of the undercoat layer to form a silver thin film layer.
- saccharides such as dextrin, aldehyde compounds such as glyoxal, organic compounds such as hydrazine compounds such as hydrazine sulfate, hydrazine carbonate or hydrazine hydrate, and aqueous solutions such as sodium sulfite or sodium thiosulfate are preferably used. Is done.
- additives can be added to produce good silver.
- amino alcohol compounds such as amine, triethanolamine, and triisopropanolamine
- amino acids such as glycine, alanine, and sodium glycine, or salts thereof, but are not particularly limited.
- a method of applying the two solutions of the ammoniacal silver nitrate solution and the reducing agent solution so as to be mixed on the surface of the undercoat layer two kinds of aqueous solutions are mixed in advance, and this mixed solution is mixed with a spray gun or the like.
- a method of spraying on the surface of the undercoat layer a method of spraying using a concentric spray gun having a structure in which two types of aqueous solutions are mixed and immediately discharged in the head of the spray gun, and a double head having two spray nozzles.
- There are a method of spraying and spraying each from a spray gun a method of spraying two kinds of aqueous solutions simultaneously using two separate spray guns, and the like. These can be arbitrarily selected according to the situation.
- a treatment such as immersion in a solution containing an organic compound that reacts with or has affinity with silver or coating the solution is performed. It can be carried out.
- Nitrogen-containing heterocyclic compounds having a thiol group or a thione group are effectively used as the organic compound having a reaction or affinity with silver, and the above-mentioned complex having a thiol group and a hydrophobic group and having a Log P of 3.5 or more. Ring compounds can also be used effectively.
- heterocyclic ring of the nitrogen-containing heterocyclic compound examples include imidazole, imidazoline, thiazole, thiazoline, oxazole, oxazoline, pyrazoline, triazole, thiadiazole, oxadiazole, tetrazole, pyridine, pyrimidine, pyridazine, pyrazine, triazine, and the like. Of these, imidazole, triazole, and tetrazole are preferable.
- 2-mercapto-4-phenylimidazole 2-mercapto-1-benzylimidazole
- 2-mercapto-benzimidazole 1-ethyl-2-mercapto-benzimidazole, 2-mercapto-1-butyl-benzimidazole.
- a treatment solution for silver mirror plating was prepared as follows. First, a silver nitrate solution in which 20 g of silver nitrate was dissolved in 1000 g of deionized water and an ammonia solution in which 100 g of 28% aqueous ammonia solution and 5 g of monoethanolamine were dissolved in 1000 g of deionized water were prepared. The silver nitrate solution and the ammonia solution were mixed one-on-one before use for forming a silver thin film to obtain an ammoniacal silver nitrate solution. A reducing agent solution was prepared by dissolving 10 g of hydrazine sulfate, 5 g of monoethanolamine and 10 g of sodium hydroxide in 1000 g of deionized water.
- ammoniacal silver nitrate solution and the reducing agent solution thus obtained are simultaneously sprayed onto the activated undercoat layer using a double-head spray gun to form a silver thin film layer, and the surface of the silver thin film layer is formed. After washing with deionized water, it was dried in a dryer at 70 ° C. for 30 minutes.
- a top coat layer was provided on the silver thin film layer.
- Acrylic silicon-based topcoat paint (trade name “Omak No. 100 (E) Clear FV” manufactured by Ohashi Chemical Industries), a silicone-based curing agent (trade name “Curing Agent W” manufactured by Ohashi Chemical Industries), and an organic solvent (Methyl ethyl ketone and ethylene glycol monobutyl ether are mixed in a ratio of 1 to 1) in a ratio of 6 to 1: 6, and further 1-methylthiourea is 2.0% with respect to the resin solid content of the topcoat layer.
- 1-methylthiourea was dissolved in methyl isobutyl ketone at a concentration of 2% and added to the topcoat paint.
- This top coat paint was spray-coated on the silver thin film layer using a spray gun, and then heated and dried at 80 ° C. for 60 minutes to form a top coat layer having a thickness of 15 ⁇ m.
- the silver plating coating body which provided the silver thin film layer and the topcoat layer on the polycarbonate board was obtained.
- Comparative Example 2 A silver-plated coated body was obtained in the same manner as in Comparative Example 1 except that 1,3-diethylthiourea was added instead of 1-methylthiourea in the topcoat layer of Comparative Example 1.
- Comparative Example 3 A silver-plated coated body was obtained in the same manner as in Comparative Example 1 except that 1-naphthylthiourea was added instead of 1-methylthiourea in the topcoat layer of Comparative Example 1.
- Example 1 A silver-plated coated body was prepared in the same manner as in Comparative Example 1 except that pentaerythritol tetrakisthiopropionate was further added to the top coat layer of Comparative Example 1 so as to be 7% based on the resin solid content of the top coat layer. Obtained.
- Example 2 A silver-plated coated body in the same manner as in Comparative Example 2 except that trimethylolpropane tristhiopropionate was further added to the topcoat layer of Comparative Example 2 so as to be 7% based on the resin solid content of the topcoat layer. Got.
- Example 3 A silver-plated coated body was obtained in the same manner as in Comparative Example 3 except that butanediol bisthioglycolate was further added to the top coat layer of Comparative Example 3 so as to be 7% based on the resin solid content of the top coat layer. It was.
- Comparative Example 4 In the same manner as in Comparative Example 1, except that 3-aminopropyltriethoxysilane was added in place of 1-methylthiourea in the topcoat layer of Comparative Example 1 so as to be 10% based on the resin solid content of the topcoat layer. A silver-plated coating was obtained.
- Example 4 A silver-plated coated body was prepared in the same manner as in Example 1 except that 3-aminopropyltriethoxysilane was further added to the topcoat layer of Example 1 so as to be 5% based on the resin solid content of the topcoat layer. Obtained.
- Example 5 A silver-plated coated body was prepared in the same manner as in Example 2 except that 3-aminopropyltriethoxysilane was further added to the topcoat layer of Example 2 so as to be 5% based on the resin solid content of the topcoat layer. Obtained.
- Example 6 A silver-plated coated body was prepared in the same manner as in Example 3 except that 3-aminopropyltriethoxysilane was further added to the topcoat layer of Example 3 so as to be 5% based on the resin solid content of the topcoat layer. Obtained.
- Evaluation D Adhesiveness 2 after salt spray test
- the salt spray test was performed in the same manner as in Evaluation C, and after washing and drying, the cellophane tape was applied from the top of the cross-cut portion with strong pressure applied.
- the cellophane tape was peeled off and evaluated according to the same criteria as in Evaluation A above. Note that x and xx are not practical.
- Example 7 Acrylic polyol-based urethane resin (trade name “Mirror Shine Undercoat Clear D1” manufactured by Ohashi Chemical Industries), epoxy resin (trade name “Adeka Resin EP-4000” epoxy equivalent 320 manufactured by ADEKA), and isocyanate-based curing agent (Ohashi)
- the chemical name “Under Clear Curing Agent-N” manufactured by Chemical Industry Co., Ltd. and an organic solvent (Methyl ethyl ketone and ethylene glycol monobutyl ether are mixed at a ratio of 1: 1) are mixed at a ratio of 4: 6: 2: 10.
- Undercoat paint was prepared.
- a silver-plated coated body of Example 7 was obtained in the same manner as in Example 4 except that this undercoat paint was used instead of the undercoat paint used in the production of the silver-plated painted body of Example 4.
- Example 8 Acrylic polyol urethane resin (trade name “Mirror Shine Undercoat Clear D1” manufactured by Ohashi Chemical Industries), epoxy resin (trade name “ADEKA RESIN EP-4000” manufactured by ADEKA), and isocyanate curing agent (manufactured by Ohashi Chemical Industries). Undercoat by mixing 5: 5: 2: 10 with the organic solvent (mixing ratio of methyl ethyl ketone and ethylene glycol monobutyl ether in a ratio of 1 to 1) A paint was prepared. A silver-plated coated body of Example 8 was obtained in the same manner as in Example 4 except that this undercoat paint was used instead of the undercoat paint used in the production of the silver-plated painted body of Example 4.
- Example 9 Acrylic polyol urethane resin (trade name “Mirror Shine Undercoat Clear D1” manufactured by Ohashi Chemical Industries), epoxy resin (trade name “ADEKA RESIN EP-4000” manufactured by ADEKA), and isocyanate curing agent (manufactured by Ohashi Chemical Industries). Undercoat by mixing 6: 4: 2: 10 with an organic solvent (mixing of methyl ethyl ketone and ethylene glycol monobutyl ether in a ratio of 1 to 1). A paint was prepared. A silver-plated coated body of Example 9 was obtained in the same manner as in Example 4 except that this undercoat paint was used instead of the undercoat paint used in the production of the silver-plated painted body of Example 4.
- Example 10 Acrylic polyol urethane resin (trade name “Mirror Shine Undercoat Clear D1” manufactured by Ohashi Chemical Industries), epoxy resin (trade name “ADEKA RESIN EP-4000” manufactured by ADEKA), and isocyanate curing agent (manufactured by Ohashi Chemical Industries). Undercoat by mixing 7: 3: 2: 10 with the organic solvent (Methyl ethyl ketone and ethylene glycol monobutyl ether mixed in a ratio of 1 to 1). A paint was prepared. A silver-plated coated body of Example 10 was obtained in the same manner as in Example 4 except that this undercoat paint was used instead of the undercoat paint used in the production of the silver-plated painted body of Example 4.
- Example 11 Acrylic polyol urethane resin (trade name “Mirror Shine Undercoat Clear D1” manufactured by Ohashi Chemical Industries), epoxy resin (trade name “ADEKA RESIN EP-4000” manufactured by ADEKA), and isocyanate curing agent (manufactured by Ohashi Chemical Industries). Undercoat by mixing 8: 2: 2: 10 with the organic solvent (Methyl ethyl ketone and ethylene glycol monobutyl ether mixed at a ratio of 1 to 1). A paint was prepared. A silver-plated coated body of Example 11 was obtained in the same manner as in Example 4 except that this undercoat paint was used instead of the undercoat paint used in the production of the silver-plated painted body of Example 4.
- Example 12 10 2 of epoxy resin (trade name “ADEKA RESIN EP-4000” manufactured by ADEKA), curing agent (metaphenylenediamine), and organic solvent (mixing of methyl ethyl ketone and ethylene glycol monobutyl ether in a ratio of 1: 1)
- An undercoat paint was prepared by mixing at a ratio of 10 to 10.
- a silver-plated coated body of Example 10 was obtained in the same manner as in Example 4 except that this undercoat paint was used instead of the undercoat paint used in the production of the silver-plated painted body of Example 4.
- Evaluation F Adhesiveness 2 after long-term salt spray test
- a salt spray test was conducted in the same manner as in evaluation F, and after washing and drying, the cellophane tape was applied with strong pressure on the cross-cut part, The cellophane tape was peeled off and evaluated according to the same criteria as in Evaluation A above. Note that xx is not practical.
- Examples 13 to 20 instead of the polycarbonate plate substrate used in Example 1, an aluminum plate whose surface was degreased, washed and dried was used, and M4, M6, M7, M9, M14 as additional additives for the topcoat layer of Example 1 , M17, M22, and M24 (see [Chemical 1] in paragraph [0051] and [Chemical 2] in paragraph [0052]) are added so as to be 0.5% with respect to the resin solid content of the topcoat layer. Except that, silver-plated coated bodies of Examples 13 to 20 were obtained in the same manner as Example 1.
- Example 21 The silver plating coating of Example 21 was performed in the same manner as in Example 1 except that M4 was added to the top coat layer of Example 1 as 1% of the resin solid content of the top coat layer. Got the body.
- Example 22 A silver-plated coated body of Example 22 is obtained in the same manner as in Example 1 except that M14 is added to the undercoat layer of Example 1 so as to be 0.5% with respect to the resin solid content of the undercoat layer. It was.
- each of R1 and R2 (see [Chemical Formula 3] in paragraph [0104]) is 0.5% with respect to the resin solid content of the topcoat layer.
- a silver-plated coated body of Comparative Examples 7 and 8 was obtained in the same manner as Comparative Example 1 except that it was added.
Abstract
Description
ポリカーボネート板の表面を脱脂、水洗、乾燥したものを基材とした。アクリルポリオール系ウレタン樹脂(大橋化学工業製の商品名「ミラーシャインアンダーコートクリヤーD1」)と、イソシアネート系硬化剤(大橋化学工業製の商品名「アンダークリヤー用硬化剤-N」)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを10対2対10の割合で混合してアンダーコート塗料を調製した。このアンダーコート塗料を上記の基材表面に、スプレーガンを用いてスプレー塗布した後、80℃で2時間加熱乾燥して、基材上に厚さ20μmのアンダーコート層を形成した。
比較例1のトップコート層の1-メチルチオ尿素の代わりに1,3-ジエチルチオ尿素を添加した以外は比較例1と同様にして銀めっき塗装体を得た。
比較例1のトップコート層の1-メチルチオ尿素の代わりに1-ナフチルチオ尿素を添加した以外は比較例1と同様にして銀めっき塗装体を得た。
比較例1のトップコート層に、更にペンタエリスリトールテトラキスチオプロピオネートをトップコート層の樹脂固形分に対して7%となるように添加した以外は比較例1と同様にして銀めっき塗装体を得た。
比較例2のトップコート層に、更にトリメチロールプロパントリスチオプロピオネートをトップコート層の樹脂固形分に対して7%となるように添加した以外は比較例2と同様にして銀めっき塗装体を得た。
比較例3のトップコート層に、更にブタンジオールビスチオグリコレートをトップコート層の樹脂固形分に対して7%となるように添加した以外は比較例3と同様にして銀めっき塗装体を得た。
比較例1のトップコート層の1-メチルチオ尿素の代わりに3-アミノプロピルトリエトキシシランをトップコート層の樹脂固形分に対して10%になるように添加した以外は比較例1と同様にして銀めっき塗装体を得た。
比較例1のトップコート層の1-メチルチオ尿素の代わりに3-メルカプトプロピルトリメトキシシランをトップコート層の樹脂固形分に対して10%になるように添加した以外は比較例1と同様にして銀めっき塗装体を得た。
比較例1のトップコート層の1-メチルチオ尿素の代わりに3-イソシアネートプロピルトリエトキシシランをトップコート層の樹脂固形分に対して10%になるように添加した以外は比較例1と同様にして銀めっき塗装体を得た。
実施例1のトップコート層に、更に3-アミノプロピルトリエトキシシランをトップコート層の樹脂固形分に対して5%となるように添加した以外は実施例1と同様にして銀めっき塗装体を得た。
実施例2のトップコート層に、更に3-アミノプロピルトリエトキシシランをトップコート層の樹脂固形分に対して5%となるように添加した以外は実施例2と同様にして銀めっき塗装体を得た。
実施例3のトップコート層に、更に3-アミノプロピルトリエトキシシランをトップコート層の樹脂固形分に対して5%となるように添加した以外は実施例3と同様にして銀めっき塗装体を得た。
評価A(接着性)
カッターガイド(太佑機材製の商品名「スーパーカッターガイド」)と市販のカッター刃を使用し、銀めっき塗装体のトップコート層面からポリカーボネート基材に達するように2mm間隔でクロスカットを入れ、その上からセロファンテープを強く押しつけながら貼付した後、セロファンテープを剥離し、次の基準に基づいて判定した。なお、×及び××は実用不可である。
○:塗布層の剥離が全く無い。
△:クロスカット部の中央部の塗布層小片が少し剥がれた。
×:クロスカット部の塗布層が全て剥がれた。
××:クロスカットの有無にかかわらず、銀めっき塗装体全体で塗布層が剥がれた。
加温庫(アドバンテック製の商品名「THN054PB」)を使用し、80℃(加湿なし)の環境下で銀めっき塗装体を10日間保存した後に常温で2時間放置し、その後に塗装面の様子を、次の基準に基づいて目視で判定した。なお、×及び××は実用不可である。
○:未加温処理品と比較しても変色が判らない。
△:未加温処理品と比較すると変色が判るが、単独で見れば変色に気がつかない。
×:単独で見ても明らかに変色が認められる。
××:銀が全体に黒化して光沢が無くなっている。
塩水噴霧試験機(スガ試験機製の商品名「STP-90」)を使用し、35℃の環境下で銀めっき塗装体に5%食塩水を5日間噴霧する塩水噴霧試験を行い、水洗、乾燥後に、上記評価Aと同様にクロスカットを入れ、その上からセロファンテープを強く押しつけながら貼付した後、セロファンテープを剥離し、上記評価Aと同様の基準にて評価した。なお、×及び××は実用不可である。
銀めっき塗装体に評価Aと同様の方法でクロスカットを入れた後、評価Cと同様に塩水噴霧試験を行い、水洗、乾燥後にクロスカット部の上からセロファンテープを強く押しつけながら貼付した後、セロファンテープを剥離し、上記評価Aと同様の基準にて評価した。なお、×及び××は実用不可である。
アクリルポリオール系ウレタン樹脂(大橋化学工業製の商品名「ミラーシャインアンダーコートクリヤーD1」)と、エポキシ樹脂(ADEKA製の商品名「アデカレジンEP-4000」エポキシ当量320)と、イソシアネート系硬化剤(大橋化学工業製の商品名「アンダークリヤー用硬化剤-N」)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを4対6対2対10の割合で混合してアンダーコート塗料を調製した。実施例4の銀めっき塗装体の作製において用いたアンダーコート塗料に代えてこのアンダーコート塗料を用いた以外は実施例4と同様にして、実施例7の銀めっき塗装体を得た。
アクリルポリオール系ウレタン樹脂(大橋化学工業製の商品名「ミラーシャインアンダーコートクリヤーD1」)と、エポキシ樹脂(ADEKA製の商品名「アデカレジンEP-4000」)と、イソシアネート系硬化剤(大橋化学工業製の商品名「アンダークリヤー用硬化剤-N」)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを5対5対2対10の割合で混合してアンダーコート塗料を調製した。実施例4の銀めっき塗装体の作製において用いたアンダーコート塗料に代えてこのアンダーコート塗料を用いた以外は実施例4と同様にして、実施例8の銀めっき塗装体を得た。
アクリルポリオール系ウレタン樹脂(大橋化学工業製の商品名「ミラーシャインアンダーコートクリヤーD1」)と、エポキシ樹脂(ADEKA製の商品名「アデカレジンEP-4000」)と、イソシアネート系硬化剤(大橋化学工業製の商品名「アンダークリヤー用硬化剤-N」)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを6対4対2対10の割合で混合してアンダーコート塗料を調製した。実施例4の銀めっき塗装体の作製において用いたアンダーコート塗料に代えてこのアンダーコート塗料を用いた以外は実施例4と同様にして、実施例9の銀めっき塗装体を得た。
アクリルポリオール系ウレタン樹脂(大橋化学工業製の商品名「ミラーシャインアンダーコートクリヤーD1」)と、エポキシ樹脂(ADEKA製の商品名「アデカレジンEP-4000」)と、イソシアネート系硬化剤(大橋化学工業製の商品名「アンダークリヤー用硬化剤-N」)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを7対3対2対10の割合で混合してアンダーコート塗料を調製した。実施例4の銀めっき塗装体の作製において用いたアンダーコート塗料に代えてこのアンダーコート塗料を用いた以外は実施例4と同様にして、実施例10の銀めっき塗装体を得た。
アクリルポリオール系ウレタン樹脂(大橋化学工業製の商品名「ミラーシャインアンダーコートクリヤーD1」)と、エポキシ樹脂(ADEKA製の商品名「アデカレジンEP-4000」)と、イソシアネート系硬化剤(大橋化学工業製の商品名「アンダークリヤー用硬化剤-N」)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを8対2対2対10の割合で混合してアンダーコート塗料を調製した。実施例4の銀めっき塗装体の作製において用いたアンダーコート塗料に代えてこのアンダーコート塗料を用いた以外は実施例4と同様にして、実施例11の銀めっき塗装体を得た。
エポキシ樹脂(ADEKA製の商品名「アデカレジンEP-4000」)と)、硬化剤(メタフェニレンジアミン)と、有機溶剤(メチルエチルケトンとエチレングリコールモノブチルエーテルを1対1の割合で混合)とを10対2対10の割合で混合してアンダーコート塗料を調製した。実施例4の銀めっき塗装体の作製において用いたアンダーコート塗料に代えてこのアンダーコート塗料を用いた以外は実施例4と同様にして、実施例10の銀めっき塗装体を得た。
評価E(長期塩水噴霧試験後の接着性1)
塩水噴霧試験機(スガ試験機製の商品名「STP-90」)を使用し、35℃の環境下で銀めっき塗装体に5%食塩水を42日間(約1000時間)噴霧する塩水噴霧試験を行い、水洗、乾燥後に、上記評価Aと同様にクロスカットを入れ、その上からセロファンテープを強く押しつけながら貼付した後、セロファンテープを剥離し、上記評価Aと同様の基準にて評価した。なお、××は実用不可である。
銀めっき塗装体に評価Aと同様の方法でクロスカットを入れた後、評価Fと同様に塩水噴霧試験を行い、水洗、乾燥後にクロスカット部の上からセロファンテープを強く押しつけながら貼付した後、セロファンテープを剥離し、上記評価Aと同様の基準にて評価した。なお、××は実用不可である。
実施例1で用いたポリカーボネート板基材の代わりに、表面を脱脂、水洗、乾燥したアルミ板を用い、実施例1のトップコート層に追加の添加剤として、M4、M6、M7、M9、M14、M17、M22、M24(段落[0051]の[化1]と段落[0052]の[化2]参照)の各々をトップコート層の樹脂固形分に対して0.5%となるように添加した以外は実施例1と同様にして、実施例13~20の銀めっき塗装体を得た。
実施例1のトップコート層に追加の添加剤として、M4をトップコート層の樹脂固形分に対し1%となるように添加した以外は実施例1と同様にして、実施例21の銀めっき塗装体を得た。
実施例1のアンダーコート層に、M14をアンダーコート層の樹脂固形分に対し0.5%となるように添加した以外は実施例1と同様にして、実施例22の銀めっき塗装体を得た。
比較例1のトップコート層用の塗料組成物に、R1、R2(段落[0104]の[化3]参照)の各々をトップコート層の樹脂固形分に対して0.5%となるように添加した以外は比較例1と同様にして、比較例7、8の銀めっき塗装体を得た。
評価G(長期耐熱試験後の変色性)
加温庫(アドバンテック製の商品名「THN054PB」)を使用し、120℃(加湿なし)の環境下で銀めっき塗装体を4ヶ月間保存した後に常温で2時間放置し、その後に、分光測色計(コニカミノルタオプティクス製の商品名「CM-2500d」)を用いて、塗装面の光波長400nmの反射率(SCI測定値)を測定し、同じ銀めっき塗装体の未加温処理品の塗装面の反射率測定値からの変化量を調べた。なお、×及び××は実用不可である。
◎;反射率変化量が8%未満。
○;反射率変化量が8%以上10%未満。
△;反射率変化量が10%以上15%未満。
×;反射率変化量が15%以上40%未満。
××;反射率変化量が40%以上。
Claims (6)
- 基材上に、少なくとも銀薄膜層およびトップコート層を有する銀めっき塗装体において、トップコート層がチオ尿素およびチオ尿素誘導体から選ばれる少なくとも1種とチオール有機酸およびチオール有機酸誘導体から選ばれる少なくとも1種を含有することを特徴とする銀めっき塗装体。
- チオール有機酸およびチオール有機酸誘導体から選ばれる少なくとも1種が、メルカプトプロピオン酸誘導体およびチオグリコール酸誘導体から選ばれる少なくとも1種である請求項1に記載の銀めっき塗装体。
- トップコート層が、更にシランカップリング剤を含有する請求項1または2に記載の銀めっき塗装体。
- 基材と銀薄膜層との間に、ウレタン樹脂及び/又はエポキシ樹脂を含有するアンダーコート層を有する請求項1~3のいずれか1項に記載の銀めっき塗装体。
- アンダーコート層におけるウレタン樹脂とエポキシ樹脂の含有割合(ウレタン樹脂の含有量対エポキシ樹脂の含有量)が、45対55~75対25(質量比)である請求項4に記載の銀めっき塗装体。
- 基材と銀薄膜層との間にアンダーコート層を有し、アンダーコート層およびトップコート層のうち少なくとも一層が、チオール基及び疎水性基を有しオクタノール-水分配係数(LogP)が3.5以上の複素環化合物を含有する請求項1~5のいずれか1項に記載の銀めっき塗装体。
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JP2012213780A JP2014065268A (ja) | 2012-09-27 | 2012-09-27 | 銀メッキ塗装体 |
JP2012-213780 | 2012-09-27 | ||
JP2012262594A JP2014108531A (ja) | 2012-11-30 | 2012-11-30 | 銀めっき塗装体 |
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JP2016030432A (ja) * | 2014-07-30 | 2016-03-07 | トッパン・フォームズ株式会社 | 積層体及び電子機器 |
JP2017196775A (ja) * | 2016-04-26 | 2017-11-02 | 大日本印刷株式会社 | 建材用防湿フィルム |
JP2017196774A (ja) * | 2016-04-26 | 2017-11-02 | 大日本印刷株式会社 | 建材用防湿フィルム |
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US10280514B2 (en) * | 2011-05-20 | 2019-05-07 | S.T. Trading Company Limited | Fabrication of mirror-like coatings |
JP2020078944A (ja) * | 2020-02-20 | 2020-05-28 | 大日本印刷株式会社 | 建材用防湿フィルム |
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JP6408933B2 (ja) | 2014-08-28 | 2018-10-17 | 日本発條株式会社 | 車両用サスペンション部材 |
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KR101741771B1 (ko) | 2017-05-30 |
US20150024215A1 (en) | 2015-01-22 |
KR20140135232A (ko) | 2014-11-25 |
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