WO2022138288A1 - 表面処理剤、親水化無機基材およびその製造方法 - Google Patents
表面処理剤、親水化無機基材およびその製造方法 Download PDFInfo
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- WO2022138288A1 WO2022138288A1 PCT/JP2021/045851 JP2021045851W WO2022138288A1 WO 2022138288 A1 WO2022138288 A1 WO 2022138288A1 JP 2021045851 W JP2021045851 W JP 2021045851W WO 2022138288 A1 WO2022138288 A1 WO 2022138288A1
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- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- HMDRAGZZZBGZJC-UHFFFAOYSA-N n-[3-[3-aminopropoxy(dimethoxy)silyl]propyl]-1-phenylprop-2-en-1-amine Chemical compound NCCCO[Si](OC)(OC)CCCNC(C=C)C1=CC=CC=C1 HMDRAGZZZBGZJC-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229940093932 potassium hydroxide Drugs 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- JPPLPDOXWBVPCW-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) octanethioate Chemical compound CCCCCCCC(=O)SCCC[Si](OCC)(OCC)OCC JPPLPDOXWBVPCW-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229940083608 sodium hydroxide Drugs 0.000 description 1
- 229940045944 sodium lauroyl glutamate Drugs 0.000 description 1
- IWIUXJGIDSGWDN-UQKRIMTDSA-M sodium;(2s)-2-(dodecanoylamino)pentanedioate;hydron Chemical compound [Na+].CCCCCCCCCCCC(=O)N[C@H](C([O-])=O)CCC(O)=O IWIUXJGIDSGWDN-UQKRIMTDSA-M 0.000 description 1
- XFTALRAZSCGSKN-UHFFFAOYSA-M sodium;4-ethenylbenzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=C(C=C)C=C1 XFTALRAZSCGSKN-UHFFFAOYSA-M 0.000 description 1
- BWYYYTVSBPRQCN-UHFFFAOYSA-M sodium;ethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=C BWYYYTVSBPRQCN-UHFFFAOYSA-M 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000005369 trialkoxysilyl group Chemical group 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- HMQDCBCLPSNYJX-UHFFFAOYSA-M trimethyl(1-prop-2-enoyloxyethyl)azanium chloride Chemical compound [Cl-].C[N+](C)(C)C(C)OC(=O)C=C HMQDCBCLPSNYJX-UHFFFAOYSA-M 0.000 description 1
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 description 1
- UZNHKBFIBYXPDV-UHFFFAOYSA-N trimethyl-[3-(2-methylprop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)NCCC[N+](C)(C)C UZNHKBFIBYXPDV-UHFFFAOYSA-N 0.000 description 1
- AISMNBXOJRHCIA-UHFFFAOYSA-N trimethylazanium;bromide Chemical compound Br.CN(C)C AISMNBXOJRHCIA-UHFFFAOYSA-N 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
- C04B41/455—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application the coating or impregnating process including a chemical conversion or reaction
- C04B41/4552—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application the coating or impregnating process including a chemical conversion or reaction the end product being obtained by a multistep reaction or conversion
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
- C04B41/455—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application the coating or impregnating process including a chemical conversion or reaction
- C04B41/4556—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application the coating or impregnating process including a chemical conversion or reaction coating or impregnating with a product reacting with the substrate, e.g. generating a metal coating by surface reduction of a ceramic substrate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
- C04B41/455—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application the coating or impregnating process including a chemical conversion or reaction
- C04B41/4558—Coating or impregnating involving the chemical conversion of an already applied layer, e.g. obtaining an oxide layer by oxidising an applied metal layer
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/4922—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
-
- 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
- B05D2420/00—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the substrate
- B05D2420/01—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the substrate first layer from the substrate side
-
- 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
- B05D2420/00—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the substrate
- B05D2420/02—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the substrate second layer from the substrate side
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/963—Surface properties, e.g. surface roughness
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
Definitions
- the present invention relates to a surface treatment agent, a hydrophilized inorganic base material, and a method for producing the same.
- Patent Documents 1 and 2 teach that a surface layer containing an inorganic compound is treated with a silane coupling agent and then a hydrophilic compound is applied.
- the present invention solves the above-mentioned problems, and provides a surface treatment agent capable of imparting excellent antifouling property as well as good and durable hydrophilicity to an inorganic base material such as pottery.
- the purpose is to provide.
- a surface treatment agent applied to an inorganic substrate which is a surface treatment agent.
- the surface treatment agent contains a hydrophilization treatment agent and a pretreatment agent.
- the pretreatment agent is Silane compounds having reactive silyl groups and organic functional groups, Containing with polyfunctional monomers,
- the polyfunctional monomer is With one or more first reactive groups that react with the organic functional group,
- the first reactive group is at least one selected from the group consisting of an acrylamide group, an acryloyl group, a methacryloyl group, an allyl group, a vinyl group, a styryl group and a mercapto group, and is the above-mentioned [1] or [2].
- the second reactive group is at least one selected from the group consisting of an acrylamide group, an acryloyl group, a methacryloyl group, an allyl group, a vinyl group, a styryl group and a mercapto group, and is the above-mentioned [1] to [3].
- the surface treatment agent according to any one of.
- the hydrophilization treatment agent contains a hydrophilic compound and contains The surface treatment agent according to any one of the above [1] to [4], wherein the hydrophilic compound has at least one of a sulfonic acid group and an alkali metal salt of the sulfonic acid group.
- the hydrophilization treatment agent contains a hydrophilic compound and contains The surface treatment agent according to any one of the above [1] to [4], wherein the hydrophilic compound has a quaternary ammonium group.
- the pretreatment agent contains a silane compound having a reactive silyl group and an organic functional group, and a polyfunctional monomer.
- the polyfunctional monomer has one or more first reactive groups that react with the organic functional group and one or more second reactive groups that react with the hydrophilization treatment agent.
- the process of applying the pretreatment agent to the surface of the inorganic base material, A step of applying the hydrophilizing treatment agent to the surface of the inorganic base material to which the pretreatment agent has been applied, and A step of fixing the hydrophilization treatment agent to the pretreatment agent is provided.
- the pretreatment agent contains a silane compound having a reactive silyl group and an organic functional group, and a polyfunctional monomer.
- the polyfunctional monomer has one or more first reactive groups that react with the organic functional group and one or more second reactive groups that react with the hydrophilization treatment agent.
- a surface treatment agent capable of imparting excellent antifouling property as well as good and durable hydrophilicity to an inorganic base material.
- the surface treatment agent according to the present embodiment includes a pretreatment agent and a hydrophilization treatment agent.
- a pretreatment agent By treating the inorganic base material with both the pretreatment agent and the hydrophilization treatment agent, the hydrophilicity of the inorganic base material and its durability are improved. For example, even if the inorganic base material is washed with various commercially available cleaning agents, its hydrophilicity can be easily maintained.
- the surface treatment agent according to the present embodiment facilitates the removal of mineral components (scale) that may be contained in tap water such as calcium.
- scale mineral components
- tap water such as calcium
- the pretreatment agent and the hydrophilization treatment agent are not mixed and are sequentially applied to the inorganic base material. As a result, the effect of each treatment agent is exhibited, and the hydrophilicity and durability thereof as well as the antifouling property are improved.
- the pretreatment agent is used to firmly fix the hydrophilizing treatment agent to the inorganic substrate.
- the pretreatment agent contains a silane compound and a polyfunctional monomer.
- the polyfunctional monomer has two or more reactive groups. Specifically, the polyfunctional monomer has one or more first reactive groups for reacting with the organic functional group of the silane compound and one or more second reactive groups for reacting with the hydrophilization treatment agent. ..
- a polyfunctional monomer is fixed on the surface of the inorganic base material via a silane compound.
- the hydrophilization treatment agent (specifically, the hydrophilic compound described later) is immobilized on the second reactive group of this polyfunctional monomer. That is, the polyfunctional monomer forms many cross-linking points between the inorganic base material and the hydrophilic compound, so that more hydrophilic compounds can be easily fixed on the surface of the inorganic base material. It is considered that this makes it difficult for the mineral component to adhere to the surface of the inorganic base material and improves the antifouling property.
- the polyfunctional monomer has one or more first reactive groups and one or more second reactive groups.
- the first reactive group can react with the organic functional group of the silane compound.
- the second reactive group can react with the hydrophilizing agent.
- the first reactive group and the second reactive group may be the same kind or different from each other.
- the fact that the polyfunctional monomer has one or more first reactive groups means that one or more reactive groups of the polyfunctional monomer can chemically bond with the silane compound.
- the fact that the polyfunctional monomer has one or more second reactive groups means that one or more reactive groups of the polyfunctional monomer can be chemically bonded to the hydrophilization treatment agent.
- the first reactive group may be 1 or more in the polyfunctional monomer, and may be 2 or more.
- the polyfunctional monomer preferably has one first reactive group. Thereby, one or more polyfunctional monomers can be immobilized on one silane compound. As a result, a large amount of the hydrophilizing agent can be fixed on the surface of the inorganic base material, and the antifouling property can be further improved.
- the first reactive group is not particularly limited as long as it reacts with the organic functional group of the silane compound.
- the reaction between the first reactive group and the organic functional group may be a radical reaction or a condensation reaction.
- Examples of the first reactive group that undergoes a radical reaction include at least one selected from the group consisting of an acrylamide group, an acryloyl group, a methacryloyl group, an allyl group, a vinyl group, a styryl group and a mercapto group.
- Examples of the first reactive group to undergo a condensation reaction include a carboxy group, a hydroxy group, an amino group, an epoxy group, a ureido group, an isocyanate group and an isocyanurate group.
- the plurality of first reactive groups may be homologous or heterologous.
- a radically reactive group is preferable, and an acryloyl group and a methacryloyl group (hereinafter, collectively referred to as (meth) acryloyl group) are preferable, and a methacryloyl group is more preferable, because the reactivity is particularly high.
- the second reactive group may be 1 or more in the polyfunctional monomer.
- the second reactive group preferably has 2 or more in the polyfunctional monomer, and more preferably 5 or more.
- the second reactive group is not particularly limited as long as it reacts with the hydrophilizing agent.
- the reaction between the second reactive group and the hydrophilization treatment agent may be a radical reaction or a condensation reaction.
- Examples of the second reactive group that undergoes a radical reaction include the same groups as the first reactive group.
- Examples of the second reactive group that undergoes a condensation reaction include a group similar to the first reactive group.
- the plurality of second reactive groups may be homologous or heterologous. Among them, a radically reactive group is preferable, and a (meth) acryloyl group is preferable, and a methacryloyl group is more preferable in that the reactivity is particularly high.
- polyfunctional monomer having a (meth) acryloyl group as the first reactive group and the second reactive group examples include bifunctional (meth) acrylate monomers such as tripropylene glycol diacrylate and isocyanuric acid EO-modified diacrylate; glycerin.
- the blending amount of the polyfunctional monomer is preferably 1% by mass or more and 99% by mass or less of the solid content of the pretreatment agent.
- the blending amount of the polyfunctional monomer is more preferably 15% by mass or more, and further preferably 40% by mass or more of the solid content of the pretreatment agent.
- the blending amount of the polyfunctional monomer is more preferably 95% by mass or less, and further preferably 85% by mass or less of the solid content of the pretreatment agent.
- the solid content of the pretreatment agent is all components other than the volatile component (typically, the solvent described later).
- Silane compounds have both reactive silyl groups and organic functional groups.
- a silane compound is known as a silane coupling agent.
- Reactive silyl groups produce silanol groups by hydrolysis.
- the silanol group is adsorbed on the surface of the inorganic substrate and is bonded in a hydrogen bond manner.
- a strong chemical bond is formed.
- the silane compound is fixed on the surface of the inorganic base material.
- the organic functional group reacts with the polyfunctional monomer to bond the polyfunctional monomer and the silane compound.
- the reactive silyl group is not particularly limited as long as it produces a silanol group by hydrolysis.
- the reactive silyl group include a trialkoxysilyl group (preferably 1 to 7 carbon atoms contained in the alkoxy group) and a dialkoxyalkyl group (preferably 1 to 7 carbon atoms contained in the alkoxy group).
- the number of carbon atoms contained in the above is preferably 1 to 7), and more specifically, a trimethoxysilyl group, a triethoxysilyl group, a tripropoxysilyl group, a tris (2-methoxyethoxy) silyl group, and a dimethoxyalkylsilyl.
- the above alkyl group may be a linear or branched alkyl group having 1 to 7 carbon atoms).
- the plurality of reactive silyl groups may be homologous or heterologous.
- the organic functional group is not particularly limited as long as it reacts with the first reactive group of the polyfunctional monomer.
- the reaction between the organic functional group and the first reactive group may be a radical reaction or a condensation reaction.
- Examples of the organic functional group that undergoes a radical reaction include a group similar to the first reactive group.
- Examples of the organic functional group that undergoes a condensation reaction include a group similar to the first reactive group.
- the plurality of organic functional groups may be homologous or heterogeneous.
- silane compound examples include vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris (2-methoxyethoxy) silane, vinylmethyldimethoxysilane, p-styryltrimethoxysilane, p-stylltriethoxysilane, and 3-methacryloxypropyl.
- the blending amount of the silane compound is preferably 1% by mass or more and 99% by mass or less of the solid content of the pretreatment agent. As a result, sufficient hydrophilicity can be imparted to the inorganic base material, and gelation due to excessive progress of the condensation reaction between the reactive silyl groups is likely to be suppressed.
- the blending amount of the silane compound is more preferably 15% by mass or more, and further preferably 20% by mass or more of the solid content of the pretreatment agent.
- the blending amount of the silane compound is more preferably 85% by mass or less, and further preferably 60% by mass or less of the solid content of the pretreatment agent.
- the pretreatment agent may further contain a radical polymerization initiator.
- the pretreatment agent does not substantially contain a radical polymerization initiator (the amount of the radical polymerization initiator is not less than the detection limit) because the polymerization of the polyfunctional monomers is easily suppressed.
- the pretreatment agent may contain a catalyst that promotes the hydrolysis of the reactive silyl group.
- the catalyst include acidic catalysts such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and carboxylic acids (aric acid, acetic acid, propionic acid, etc.); ammonia, morpholine, N-methylmorpholine, N-ethylmorpholine, piperazine, hydroxyethylpiperazine, 2 -Methyl piperazine, trans 2,5-dimethyl piperazine, cis 2,6-dimethyl piperazine, triethylamine, N, N-dimethylethanolamine, N, N-diethylethanolamine, N- ( ⁇ -aminoethyl) ethanolamine, N -Methyldiethanolamine, Nn-butylethanolamine, Nn-butyldiethanolamine, Nt-butylethanolamine, Nt-butyldiethanolamine, Nt-buty
- the pretreatment agent may contain a solvent.
- the solvent may be an organic solvent or water.
- the organic solvent include alcohols such as methanol, ethanol, isopropyl alcohol, n-propyl alcohol and 1-methoxy-2-propanol; ketones such as methyl ethyl ketone and methyl isobutyl ketone; and esters such as ethyl acetate. ..
- the hydrophilization treatment agent imparts hydrophilicity to the inorganic substrate.
- the hydrophilization treatment agent contains a hydrophilic compound.
- the hydrophilic compound has a third reactive group that reacts with the second reactive group of the polyfunctional monomer and a hydrophilic group.
- the fact that the second reactive group of the polyfunctional monomer can react with the hydrophilizing treatment agent means that the second reactive group can react with the third reactive group of the hydrophilic compound.
- the hydrophilic compound has a third reactive group that reacts with the second reactive group of the polyfunctional monomer and a hydrophilic group.
- the third reactive group may be 1 or more in the hydrophilic compound, and may be 2 or more.
- the hydrophilic compound preferably has one third reactive group.
- one or more hydrophilic compounds can be immobilized on one polyfunctional monomer. Therefore, more hydrophilic groups are more likely to be fixed on the surface of the inorganic base material, and hydrophilicity and antifouling property are more likely to be improved. Hydrophilic compounds can also be immobilized on silane compounds.
- the third reactive group is not particularly limited as long as it reacts with the second reactive group of the polyfunctional monomer.
- the reaction between the third reactive group and the second reactive group may be a radical reaction or a condensation reaction.
- Examples of the third reactive group that undergoes a radical reaction include the same groups as the first reactive group.
- Examples of the third reactive group that undergoes a condensation reaction include a group similar to the first reactive group.
- the plurality of tertiary reactive groups may be homologous or heterologous.
- the hydrophilic group may be 1 or more in the hydrophilic compound, and may be 2 or more.
- the hydrophilic group is preferably located at the end of the main chain of the hydrophilic compound. As a result, it becomes easy to arrange the hydrophilic group toward the outside of the inorganic base material, and it becomes easier to improve the hydrophilicity.
- the hydrophilic group is not particularly limited.
- the hydrophilic group may be cationic, anionic, amphoteric, or nonionic.
- Anionic hydrophilic groups dissociate into anions in water.
- the anionic hydrophilic group include a carboxylic acid group, a sulfonic acid group, a phosphoric acid group and salts thereof.
- the hydrophilic group is preferably a sulfonic acid group and a salt of the sulfonic acid group (hereinafter, may be referred to as "sulfonic acid groups").
- sulfonic acid groups an alkali metal salt of a sulfonic acid group is preferable.
- hydrophilic compound having a sulfonic acid group examples include vinyl sulfonic acid, Nt-butyl acrylamide sulfonic acid, sodium vinyl sulfonate, lithium Nt-butyl acrylamide sulfonic acid, and Nt-butyl acrylamide sulfonic acid.
- examples thereof include sodium, potassium Nt-butylacrylamide sulfonate, 2-sodium sulfoethyl methacrylate, sodium allyl sulfonate, sodium p-styrene sulfonate and urethane acrylate containing sodium sulfonate. These may be used alone or in combination of two or more.
- Alkali metal hydroxides such as sodium hydroxide and potassium hydroxide may be added together with the hydrophilic compound having a sulfonic acid group. This neutralizes the sulfonic acid and forms the sulfonate.
- Cationic hydrophilic groups dissociate into cations in water.
- Examples of the cationic hydrophilic group include a quaternary ammonium group.
- Examples of the hydrophilic compound having a quaternary ammonium group include (3-acrylamide propyl) trimethylammonium chloride, (3-acrylamide propyl) trimethylammonium bromide, [3- (methacryloylamino) propyl] trimethylammonium chloride, and 2-.
- Examples thereof include (acryloyloxy) -N, N, N-trimethylethaneaminium chloride and 2- (methacryloyloxy) ethyltrimethylammonium chloride. These may be used alone or in combination of two or more.
- Amphoteric hydrophilic groups dissociate into anions and cations in water.
- the amphoteric hydrophilic compound include an alkyl betaine compound such as lauryldimethylaminoacetic acid betaine; a fatty acid amide propyl betaine compound such as cocamidopropyl betaine; an amino acid compound such as sodium lauroyl glutamate; and a lauryl dimethylamine N-oxide.
- alkyl betaine compound such as lauryldimethylaminoacetic acid betaine
- a fatty acid amide propyl betaine compound such as cocamidopropyl betaine
- an amino acid compound such as sodium lauroyl glutamate
- a lauryl dimethylamine N-oxide examples thereof include amine oxide compounds such as.
- Nonionic hydrophilic groups do not dissociate into ions in water.
- Nonionic hydrophilic compounds include, for example, alkyl glycosides, fatty acid esters, alkyl polyethylene glycols and polyvinyl alcohols.
- the hydrophilization treatment agent preferably contains a hydrophilic compound having a cationic or nonionic hydrophilic group as well as a hydrophilic compound having an anionic hydrophilic group.
- a hydrophilic compound having a cationic hydrophilic group together with a hydrophilic compound having an anionic hydrophilic group.
- the number average molecular weight of the hydrophilic compound is preferably 70 or more and 500 or less. When the number average molecular weight is within the above range, the hydrophilicity is likely to be further improved.
- the blending amount of the hydrophilic compound is not particularly limited.
- the hydrophilization treatment agent may further contain a radical polymerization initiator.
- the radical polymerization initiator is preferably water-soluble. Radical polymerization initiators are classified into photoradical polymerization initiators that are decomposed by light and thermal radical polymerization initiators that are decomposed by heat.
- the radical polymerization initiator is not particularly limited, and conventionally known ones can be used.
- the amount of the radical polymerization initiator to be blended is preferably 1 part by mass or more and 75 parts by mass or less, and more preferably 5 parts by mass or more and 60 parts by mass or less with respect to 100 parts by mass of the solid content of the hydrophilic compound.
- the hydrophilization treatment agent may contain a solvent.
- the solvent include the same solvents as those that can be contained in the pretreatment agent.
- the solid content concentration of the hydrophilization treatment agent can be adjusted to 0.1% by mass or more and 60% by mass or less.
- the hydrophilization treatment agent may contain a compatibilizer.
- the compatibilizer can suppress the crystallization of the hydrophilic compound and uniformly dissolve the hydrophilic compound in the hydrophilization treatment agent.
- the compatibilizer is not particularly limited, and conventionally known ones can be used.
- the amount of the compatibilizer added is preferably 10 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the solid content of the hydrophilic compound.
- the hydrophilization treatment agent may contain various additives, if necessary.
- the additive include a surface conditioner, a leveling agent, a plasticizer, an antifoaming agent, an ultraviolet absorber, an antioxidant, and a viscosity control agent.
- the additive one type may be used alone, or two or more types may be used in combination.
- the hydrophilized inorganic base material according to the present embodiment is obtained by sequentially applying the above-mentioned pretreatment agent and the above-mentioned hydrophilization treatment agent to the inorganic base material.
- the pretreatment agent contains a silane compound having a reactive silyl group and an organic functional group, and a polyfunctional monomer.
- the polyfunctional monomer has one or more first reactive groups that react with organic functional groups and one or more second reactive groups that react with a hydrophilization treatment agent. That is, the hydrophilized inorganic base material includes an inorganic base material, a silane compound, a polyfunctional monomer, and a hydrophilizing treatment agent.
- the silane compound is immobilized on the inorganic substrate via the reactive silyl group.
- the polyfunctional monomer is fixed to the silane compound by the reaction between the organic functional group of the silane compound and the first reactive group.
- the hydrophilization treatment agent is immobilized on the polyfunctional monomer by the reaction with the second reactive group.
- the hydrophilized inorganic base material has a step of applying the above-mentioned pretreatment agent to the surface of the inorganic base material and the above-mentioned hydrophilization treatment agent on the surface of the inorganic base material to which the pretreatment agent has been applied. It is produced by a method including a step of imparting a hydrophilized treatment agent and a step of fixing the hydrophilizing treatment agent to the pretreatment agent. In the fixing step, the first reactive group of the polyfunctional monomer reacts with the organic functional group of the silane compound, and the hydrophilic compound reacts with the second reactive group of the polyfunctional monomer.
- Pretreatment agent is applied to the surface of the inorganic base material.
- Pretreatment agents include silane compounds and polyfunctional monomers.
- the pretreatment agent may further contain a solvent.
- the pretreatment agent at least a part of the reactive silyl group of the silane compound is hydrolyzed to generate a silanol group.
- the silanol groups are adsorbed on the surface of the inorganic substrate and bonded in a hydrogen bond manner. Further, the silanol group can be chemically bonded by dehydration condensation with a hydroxy group or a silanol group on the surface of the inorganic substrate. As a result, the silane compound is fixed on the surface of the inorganic base material.
- at least a part of the polyfunctional monomer exists as it is near the surface of the inorganic base material.
- the amount of the pretreatment agent applied is not particularly limited.
- the first reactive group of the polyfunctional monomer and the organic functional group of the silane compound may be reacted. Then, a pretreatment agent containing a silane compound to which a polyfunctional monomer is bonded may be applied to the inorganic substrate.
- the inorganic base material is not particularly limited as long as it has a surface layer (inorganic surface) containing an inorganic compound.
- the inorganic compound include glass, metal, metal oxide, and silicon dioxide other than glass.
- Specific examples of the inorganic base material include housing-related members such as sanitary ware, tiles, enamel, glass, siding materials, sashes, walls, mirrors and bathtubs.
- the pretreatment agent and the hydrophilization treatment agent according to the present embodiment are particularly preferably used for sanitary ware.
- Sanitary ware is household equipment around water such as toilet bowls, wash basins, and hand wash basins.
- Pottery is generally obtained by glaze-glazing and firing a base material (for example, unglazed pottery) composed of raw materials such as clay, pottery stone, and feldspar. Most or part of sanitary pottery is composed of pottery, the surface of which is formed by a glassy layer.
- a base material for example, unglazed pottery
- raw materials such as clay, pottery stone, and feldspar.
- Most or part of sanitary pottery is composed of pottery, the surface of which is formed by a glassy layer.
- the drying conditions are not particularly limited and are appropriately set according to the amount of the solvent and the like.
- the hydrophilizing agent is applied to the surface of the inorganic base material. At this time, the previously applied polyfunctional monomer remains in the vicinity of the surface of the inorganic base material.
- the hydrophilization treatment agent is applied so as to cover this polyfunctional monomer. This facilitates the reaction between the polyfunctional monomer and the hydrophilizing agent.
- the amount of the hydrophilizing agent applied is not particularly limited.
- the reaction conditions are appropriately set according to the reaction mechanism of each reaction group.
- heating and / or irradiation with active energy rays may be performed.
- the condensation reaction may be carried out by heating.
- Irradiation of active energy rays is performed using, for example, a high-pressure mercury lamp, an ultra-high pressure mercury lamp, a metal halide lamp, and an ultraviolet LED lamp.
- the active energy ray ultraviolet rays having a wavelength of 220 nm or more and 450 nm or less are preferable.
- the conditions for irradiation with active energy rays are not particularly limited, and are appropriately set according to the reactivity of each reactive group, the amount of each component applied, and the like.
- Heating is performed by, for example, heating using a heating furnace, a hot air dryer, an IR heater, or the like, or heat irradiation using an infrared heat irradiation device or the like.
- the heating conditions are not particularly limited, and are appropriately set according to the reactivity of each reactive group, the amount of each component applied, and the like.
- the heating temperature may be, for example, 80 ° C. or higher and 150 ° C. or lower.
- the inorganic substrate is washed with water to remove unreacted components. Then, the inorganic substrate is dried. By such a method, a hydrophilized inorganic base material can be obtained.
- Example 1 (A) Preparation of pretreatment agent 50 parts of 3-acryloxypropyltrimethoxysilane (silane compound), 50 parts of tripropylene glycol diacrylate (polyfunctional monomer) and 1-methoxy-2-propanol (solvent) in appropriate amounts at room temperature Stirred and mixed. Then, 50 parts of a 3% aqueous hydrochloric acid solution (catalyst) was added, and the mixture was further stirred for 30 minutes. In this way, the pretreatment agent was adjusted.
- silane compound 3-acryloxypropyltrimethoxysilane
- tripropylene glycol diacrylate polyfunctional monomer
- 1-methoxy-2-propanol solvent
- hydrophilic compound Ha was synthesized as follows. 45.2 parts of aminoethyl sulfonic acid, 14.8 parts of sodium hydroxide and 40 parts of ion-exchanged water were reacted at room temperature of 20 to 25 ° C. Keep 42.5 parts of the obtained reaction product at a temperature of 5 to 10 ° C., and add 2-isocyanatoethyl acrylate (manufactured by Showa Denko KK, Karens AOI®) 24 to 33 parts of 1-methoxy-2-propanol. A solution prepared by mixing and dissolving 5 parts was added dropwise over 5 minutes, and the mixture was further stirred and stirred for 4 hours.
- 2-isocyanatoethyl acrylate manufactured by Showa Denko KK, Karens AOI®
- hydrophilic compound Ha 70 parts of (3-acrylamide propyl) trimethylammonium chloride (hydrophilic compound Hc), and 2-hydroxy-2-methyl-1-phenylpropan-1-one (photoradical polymerization started).
- agent 50 parts of agent and 100 parts of isopropyl alcohol (solvent) were added, and the solution was stirred until it became transparent. In this way, the hydrophilization treatment agent was prepared.
- Examples 2 to 6, Comparative Examples 1 to 4 A pretreatment agent and a hydrophilization treatment agent were prepared in the same manner as in Example 1 except that the types and amounts of the polyfunctional monomer and the silane compound were changed as shown in Table 1, and the pretreatment and the hydrophilization treatment were performed. gone.
- the hydrophilized inorganic base materials obtained in Examples and Comparative Examples were evaluated as follows. The evaluation results are shown in Table 1.
- (I) Hydrophilicity The contact angle (initial) of water droplets on the surface of the hydrophilic inorganic substrate was measured according to JIS R 3257 “Wetting property test method for the surface of substrate glass” (hydrostatic method). Specifically, regarding the measurement of the contact angle of water droplets, DMo-701 manufactured by Kyowa Interface Science Co., Ltd. was used, and 4 ⁇ L of distilled water was dropped onto the coating film, and the contact angle after 60 seconds was measured.
- the contact angle was evaluated according to the following criteria. ⁇ : The contact angle of water droplets is 20 ° or less ⁇ : The contact angle of water droplets is larger than 20 °
- Antifouling property (mineral removing property) 150 ⁇ L of water was added dropwise to the hydrophilized inorganic substrate, and the mixture was dried at 40 ° C. for 24 hours to create white water droplet spots. Then, in water at 20 to 25 ° C., 3M Scotch-Brite TM antibacterial urethane sponge S-21KS was applied to the surface of the hydrophilized inorganic base material and reciprocated 20 times while applying a load of 500 gf.
- hydrophilic inorganic substrates of the examples show good hydrophilicity, durability and antifouling property.
- all of the hydrophilic inorganic base materials of the comparative examples are inferior in antifouling property.
- the surface treatment agent of the present disclosure can impart excellent antifouling property to the inorganic base material as well as good and durable hydrophilicity, and is therefore particularly suitable for use as a hydrophilic treatment agent for sanitary ware. Be done.
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Abstract
Description
[1]
無機基材に付与される表面処理剤であって、
前記表面処理剤は、親水化処理剤および前処理剤を含み、
前記前処理剤は、
反応性シリル基および有機官能基を有するシラン化合物と、
多官能モノマーと、を含み、
前記多官能モノマーは、
前記有機官能基と反応する1以上の第1反応性基と、
前記親水化処理剤と反応する1以上の第2反応性基と、を有する、表面処理剤。
前記多官能モノマーの配合量は、前記前処理剤の固形分の1質量%以上99質量%以下である、上記の[1]に記載の表面処理剤。
前記第1反応性基は、アクリルアミド基、アクリロイル基、メタクリロイル基、アリル基、ビニル基、スチリル基およびメルカプト基よりなる群から選択される少なくとも1種である、上記の[1]または[2]に記載の表面処理剤。
前記第2反応性基は、アクリルアミド基、アクリロイル基、メタクリロイル基、アリル基、ビニル基、スチリル基およびメルカプト基よりなる群から選択される少なくとも1種である、上記の[1]~[3]のいずれかに記載の表面処理剤。
前記親水化処理剤は、親水性化合物を含み、
前記親水性化合物は、スルホン酸基およびスルホン酸基のアルカリ金属塩の少なくとも1つを有する、上記の[1]~[4]のいずれかに記載の表面処理剤。
前記親水化処理剤は、親水性化合物を含み、
前記親水性化合物は、第四級アンモニウム基を有する、上記の[1]~[4]のいずれかに記載の表面処理剤。
前処理剤および親水化処理剤が順次付与された親水化無機基材であって、
前記前処理剤は、反応性シリル基および有機官能基を有するシラン化合物と、多官能モノマーと、を含み、
前記多官能モノマーは、前記有機官能基と反応する1以上の第1反応性基と、前記親水化処理剤と反応する1以上の第2反応性基と、を有し、
無機基材と、
前記反応性シリル基を介して、前記無機基材に固定された前記シラン化合物と、
前記有機官能基と前記第1反応性基との反応により、前記シラン化合物に固定された前記多官能モノマーと、
前記第2反応性基と前記親水化処理剤との反応により、前記多官能モノマーに固定された前記親水化処理剤と、を備える、親水化無機基材。
無機基材の表面に、前処理剤を付与する工程と、
前記前処理剤が付与された前記無機基材の表面に、親水化処理剤を付与する工程と、
前記親水化処理剤を前記前処理剤に固定する工程と、を備え、
前記前処理剤は、反応性シリル基および有機官能基を有するシラン化合物と、多官能モノマーと、を含み、
前記多官能モノマーは、前記有機官能基と反応する1以上の第1反応性基と、前記親水化処理剤と反応する1以上の第2反応性基と、を有し、
前記固定工程では、前記第1反応性基と前記有機官能基とが反応し、前記親水化処理剤と前記第2反応性基とが反応する、親水化無機基材の製造方法。
本実施形態に係る表面処理剤は、前処理剤と親水化処理剤とを含む。無機基材を前処理剤および親水化処理剤の双方で処理することにより、無機基材の親水性およびその耐久性が向上する。例えば、市販の様々な洗浄剤により無機基材を洗浄しても、その親水性は維持され易くなる。
前処理剤は、親水化処理剤を無機基材に強く固定するために使用される。前処理剤は、シラン化合物と多官能モノマーとを含む。多官能モノマーは、2以上の複数の反応性基を有する。具体的には、多官能モノマーは、シラン化合物が有する有機官能基と反応するための1以上の第1反応性基と、親水化処理剤と反応する1以上の第2反応性基とを有する。
(多官能モノマー)
多官能モノマーは、1以上の第1反応性基と1以上の第2反応性基とを有する。第1反応性基は、シラン化合物が有する有機官能基と反応し得る。第2反応性基は、親水化処理剤と反応し得る。第1反応性基と第2反応性基とは、同種であってよく、異種であってよい。
シラン化合物は、反応性シリル基および有機官能基の両方を有する。このようなシラン化合物は、シランカップリング剤として知られている。反応性シリル基は、加水分解によってシラノール基を生成する。シラノール基は、無機基材の表面に吸着して、水素結合的に結合する。さらに、シラノール基が、無機基材の表面にあるヒドロキシ基あるいはシラノール基と脱水縮合すると、強固な化学結合が生じる。これらの作用により、無機基材の表面には、シラン化合物が固定される。他方、有機官能基は多官能モノマーと反応して、多官能モノマーとシラン化合物とを結合させる。
シラン化合物と多官能モノマーとがラジカル反応する場合、前処理剤はさらにラジカル重合開始剤を含んでいてよい。ただし、多官能モノマー同士の重合が抑制され易い点で、前処理剤は実質的にラジカル重合開始剤を含まない(ラジカル重合開始剤の配合量は、検出限界以下である)ことが望ましい。
前処理剤は、反応性シリル基の加水分解を促進する触媒を含んでいてもよい。触媒としては、塩酸、硫酸、硝酸、リン酸、カルボン酸(蟻酸、酢酸、プロピオン酸等)等の酸性触媒;アンモニア、モルホリン、N-メチルモルホリン、N-エチルモルホリン、ピペラジン、ヒドロキシエチルピペラジン、2-メチルピペラジン、トランス2,5-ジメチルピペラジン、シス2,6-ジメチルピペラジン、トリエチルアミン、N,N-ジメチルエタノールアミン、N,N-ジエチルエタノールアミン、N-(β-アミノエチル)エタノールアミン、N-メチルジエタノールアミン、N-n-ブチルエタノールアミン、N-n-ブチルジエタノールアミン、N-t-ブチルエタノールアミン、N-t-ブチルジエタノールアミン、N-(β-アミノエチル)イソプロパノールアミン、N,N-ジエチルイソプロパノールアミン、2-アミノ-2-メチル-1-プロパノール、水酸化ナトリウム、水酸化カリウム等の塩基性触媒が挙げられる。触媒は、例えば、水溶液の状態で前処理剤に添加される。
前処理剤は、溶媒を含んでいてもよい。溶媒は、有機溶媒であってよく、水であってもよい。有機溶媒としては、例えば、メタノール、エタノール、イソプロピルアルコール、n-プロピルアルコール、1-メトキシ-2-プロパノールなどのアルコール類;メチルエチルケトン、メチルイソブチルケトンなどのケトン類;酢酸エチルなどのエステル類が挙げられる。
親水化処理剤は、無機基材に親水性を付与する。親水化処理剤は、親水性化合物を含む。親水性化合物は、多官能モノマーの第2反応性基と反応する第3反応性基と、親水基とを有する。多官能モノマーの第2反応性基が親水化処理剤と反応し得るとは、第2反応性基が、親水性化合物が有する第3反応性基と反応し得るということである。
親水性化合物は、多官能モノマーの第2反応性基と反応する第3反応性基と、親水基とを有する。
シラン化合物と親水性化合物とがラジカル反応する場合、親水化処理剤はさらにラジカル重合開始剤を含んでいてよい。ラジカル重合開始剤は、水溶性であることが好ましい。ラジカル重合開始剤は、光により分解する光ラジカル重合開始剤および熱により分解する熱ラジカル重合開始剤に分類される。
親水化処理剤は、溶媒を含んでいてもよい。溶媒としては、前処理剤に含まれ得る溶媒と同様のものが挙げられる。溶媒によって、親水化処理剤の固形分濃度は0.1質量%以上60質量%以下に調整され得る。
親水化処理剤は、相溶化剤を含んでいてもよい。相溶化剤は、親水性化合物の結晶化を抑制し、親水性化合物を親水化処理剤に均一に溶解させることができる。
親水化処理剤は、必要に応じて各種添加剤を含んでもよい。添加剤としては、例えば、表面調整剤、レベリング剤、可塑剤、消泡剤、紫外線吸収剤、酸化防止剤、粘性制御剤が挙げられる。添加剤は、1種を単独で、あるいは、2種以上を組み合わせて用いられる。
本実施形態に係る親水化無機基材は、無機基材に、上記の前処理剤および上記の親水化処理剤が、順次付与されることにより得られる。前処理剤は、反応性シリル基および有機官能基を有するシラン化合物と、多官能モノマーと、を含む。多官能モノマーは、有機官能基と反応する1以上の第1反応性基と、親水化処理剤と反応する1以上の第2反応性基と、を有する。つまり、親水化無機基材は、無機基材と、シラン化合物と、多官能モノマーと、親水化処理剤と、を備える。シラン化合物は、反応性シリル基を介して無機基材に固定されている。多官能モノマーは、シラン化合物の有機官能基と第1反応性基との反応により、シラン化合物に固定されている。親水化処理剤は、第2反応性基との反応により、多官能モノマーに固定されている。
本実施形態に係る親水化無機基材は、無機基材の表面に、上記の前処理剤を付与する工程と、前処理剤が付与された無機基材の表面に、上記の親水化処理剤を付与する工程と、親水化処理剤を前処理剤に固定する工程を含む方法により製造される。固定工程では、多官能モノマーの第1反応性基とシラン化合物の有機官能基とが反応し、親水性化合物と多官能モノマーの第2反応性基とが反応する。
無機基材の表面に上記の前処理剤を付与する。前処理剤は、シラン化合物および多官能モノマーを含む。前処理剤は、さらに溶媒を含み得る。
無機基材は、無機化合物を含む表面層(無機表面)を有する限り、特に限定されない。無機化合物としては、例えば、ガラス、金属、金属酸化物、および、ガラス以外の二酸化ケイ素が挙げられる。無機基材の具体例としては、例えば、衛生陶器、タイル、ほうろう、ガラス、サイディング材、サッシ、壁、鏡および浴槽などの住宅等関連部材が挙げられる。なかでも、本実施形態に係る前処理剤および親水化処理剤は、衛生陶器に特に好適に用いられる。衛生陶器は、便器、洗面器、手洗器などの水回りの住宅設備機器である。陶器は一般に、粘土、陶石、長石などの原料から構成された素地(例えば素焼き陶器など)に、釉薬を釉掛けし、焼成することによって得られる。衛生陶器の大部分またはその一部は、陶器から構成されており、その表面にはガラス質の層が形成されている。
前処理剤の付与後、無機基材を乾燥させて、溶媒等の揮発成分を除去することが好ましい。多官能モノマーが、無機基材の表面近傍に配置され易いためである。乾燥条件は特に限定されず、溶媒の量等に応じて適宜設定される。
無機基材の表面に親水化処理剤を付与する。このとき、先に付与されている多官能モノマーは、無機基材の表面近傍に留まっている。親水化処理剤は、この多官能モノマーを覆うように付与される。これにより、多官能モノマーと親水化処理剤とが反応し易くなる。親水化処理剤の付与量は特に限定されない。
親水化処理剤の付与後、多官能モノマーの第1反応性基およびシラン化合物の有機官能基、ならびに、親水性化合物の第3反応性基および多官能モノマーの第2反応性基を、それぞれ反応させる。これらの反応により、親水性化合物が多官能モノマーに固定され、多官能モノマーがシラン化合物に固定される。
(a)前処理剤の調製
3-アクリロキシプロピルトリメトキシシラン(シラン化合物)50部、トリプロピレングリコールジアクリレート(多官能モノマー)50部および1-メトキシ-2-プロパノール(溶媒)適量を室温で攪拌混合した。次いで、3%塩酸水溶液(触媒)50部を加えて、さらに30分間攪拌した。このようにして、前処理剤を調整した。
まず、親水性化合物Haを以下のようにして合成した。
アミノエチルスルホン酸45.2部、水酸化ナトリウム14.8部、イオン交換水40部を20~25℃の室温で反応させた。得られた反応物42.5部を5~10℃の温度に保ち、1-メトキシ-2-プロパノール33部に2-イソシアナトエチルアクリレート(昭和電工株式会社製、カレンズAOI(登録商標))24.5部を混合溶解した溶液を5分かけて滴下し、さらに4時間撹拌攪拌した。赤外吸収スペクトルにて、イソシアネート基に由来する吸収が認められず反応が終了したことを確認した。このようにして、親水性化合物Ha(スルホン酸ナトリウム含有ウレタンアクリレート)を得た。
陶器の表面をメタノールで脱脂し、無機基材を準備した。
得られた前処理剤を無機基材に塗布した。続いて、電気オーブンを用いて60℃で30分間乾燥させた後、室温で30分間放置した。
次いで、前処理剤が塗布された無機基材に親水化処理剤を塗布した。続いて、高圧水銀ランプを用いて積算光量1000mJ/cm2の紫外線を照射した。これにより、親水化された無機基材を得た。
多官能モノマー、シラン化合物の種類および量などを、表1の通りに変更したこと以外は、実施例1と同様にして前処理剤および親水化処理剤を調製し、前処理および親水化処理を行った。
実施例および比較例で得られた親水化無機基材について、下記評価を行った。評価結果を表1に示す。
(i)親水性
JIS R 3257「基板ガラス表面のぬれ性試験方法」(静滴法)に準じて、親水化無機基材の表面における水滴の接触角(初期)を測定した。具体的には、水滴の接触角の測定について、協和界面科学株式会社製のDMo-701を用い、蒸留水4μLを塗膜に滴下して60秒後の接触角を測定した。
〇:水滴の接触角が20°以下
△:水滴の接触角が20°より大きい
親水化無機基材の表面に洗浄剤(サンポール(登録商標)、カチオン性界面活性剤、大日本除虫菊株式会社製)1mLを滴下した後、水で洗浄した。この作業を10回繰り返した後、上記と同様にして、親水化無機基材の表面における水滴の接触角を測定し、評価した。
親水化無機基材に150μLの水を滴下し、40℃で24時間乾燥させて白色の水滴斑を作成した。その後、20~25℃の水中において、3Mスコッチブライト(商標)抗菌ウレタンスポンジS-21KSを親水化無機基材の表面に当てて、500gfの荷重を掛けながら20往復させた。
◎:水滴斑が視認されない
〇:若干水滴斑が視認される
△:水滴斑がはっきりと視認される
Claims (8)
- 前処理剤および親水化処理剤を含み、無機基材に順次付与される表面処理剤であって、
前記前処理剤は、
反応性シリル基および有機官能基を有するシラン化合物と、
多官能モノマーと、を含み、
前記多官能モノマーは、
前記有機官能基と反応する1以上の第1反応性基と、
前記親水化処理剤と反応する1以上の第2反応性基と、を有する、表面処理剤。 - 前記多官能モノマーの配合量は、前記前処理剤の固形分の1質量%以上99質量%以下である、請求項1に記載の表面処理剤。
- 前記第1反応性基は、アクリルアミド基、アクリロイル基、メタクリロイル基、アリル基、ビニル基、スチリル基およびメルカプト基よりなる群から選択される少なくとも1種である、請求項1または2に記載の表面処理剤。
- 前記第2反応性基は、アクリルアミド基、アクリロイル基、メタクリロイル基、アリル基、ビニル基、スチリル基およびメルカプト基よりなる群から選択される少なくとも1種である、請求項1~3のいずれか一項に記載の表面処理剤。
- 前記親水化処理剤は、親水性化合物を含み、
前記親水性化合物は、スルホン酸基およびスルホン酸基のアルカリ金属塩の少なくとも1つを有する、請求項1~4のいずれか一項に記載の表面処理剤。 - 前記親水化処理剤は、親水性化合物を含み、
前記親水性化合物は、第四級アンモニウム基を有する、請求項1~4のいずれか一項に記載の表面処理剤。 - 前処理剤および親水化処理剤が順次付与された親水化無機基材であって、
前記前処理剤は、反応性シリル基および有機官能基を有するシラン化合物と、多官能モノマーと、を含み、
前記多官能モノマーは、前記有機官能基と反応する1以上の第1反応性基と、前記親水化処理剤と反応する1以上の第2反応性基と、を有し、
無機基材と、
前記反応性シリル基を介して、前記無機基材に固定された前記シラン化合物と、
前記有機官能基と前記第1反応性基との反応により、前記シラン化合物に固定された前記多官能モノマーと、
前記第2反応性基と前記親水化処理剤との反応により、前記多官能モノマーに固定された前記親水化処理剤と、を備える、親水化無機基材。 - 無機基材の表面に、前処理剤を付与する工程と、
前記前処理剤が付与された前記無機基材の表面に、親水化処理剤を付与する工程と、
前記親水化処理剤を前記前処理剤に固定する工程と、を備え、
前記前処理剤は、反応性シリル基および有機官能基を有するシラン化合物と、多官能モノマーと、を含み、
前記多官能モノマーは、前記有機官能基と反応する1以上の第1反応性基と、前記親水化処理剤と反応する1以上の第2反応性基と、を有し、
前記固定工程では、前記第1反応性基と前記有機官能基とが反応し、前記親水化処理剤と前記第2反応性基とが反応する、親水化無機基材の製造方法。
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