WO2021095755A1 - 塗工液 - Google Patents
塗工液 Download PDFInfo
- Publication number
- WO2021095755A1 WO2021095755A1 PCT/JP2020/042024 JP2020042024W WO2021095755A1 WO 2021095755 A1 WO2021095755 A1 WO 2021095755A1 JP 2020042024 W JP2020042024 W JP 2020042024W WO 2021095755 A1 WO2021095755 A1 WO 2021095755A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating liquid
- weight
- hydroxy group
- coating
- containing resin
- Prior art date
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- 239000011248 coating agent Substances 0.000 title claims abstract description 233
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- 239000011734 sodium Substances 0.000 claims abstract description 44
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 10
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Classifications
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- 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
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
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- 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
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
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- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08L101/06—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
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- 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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
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- 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
- C09D139/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Coating compositions based on derivatives of such polymers
- C09D139/02—Homopolymers or copolymers of vinylamine
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- 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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/02—Polyamines
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- 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
- C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C09D201/06—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
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- 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
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- 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
- C09D7/20—Diluents or solvents
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- 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
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F216/04—Acyclic compounds
- C08F216/06—Polyvinyl alcohol ; Vinyl alcohol
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F218/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
- C08F218/02—Esters of monocarboxylic acids
- C08F218/04—Vinyl esters
- C08F218/08—Vinyl acetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
Definitions
- the present invention relates to a coating liquid.
- packaging materials for foods, cosmetics, etc. are required to have a property of suppressing the permeation of gas (for example, water vapor) (that is, gas barrier property) in order to prevent their deterioration.
- gas barrier property a property of suppressing the permeation of gas
- a packaging material having a high gas barrier property a laminate having a gas barrier layer formed on a base material using polyvinyl alcohol or a derivative thereof is known.
- the "gas barrier layer” means a layer used for suppressing the permeation of gas.
- Patent Document 1 describes that a gas barrier layer is formed from a dispersion containing polyvinyl alcohol, montmorillonite, water, isopropanol and butanol.
- Patent Document 2 describes a gas barrier layer containing a polyvinylamine-polyvinyl alcohol copolymer.
- gas barrier laminate When a laminate having a gas barrier layer (hereinafter sometimes abbreviated as "gas barrier laminate”) is held under high temperature and high humidity conditions, its water vapor permeability may increase.
- gas barrier laminate When a laminate having a gas barrier layer (hereinafter sometimes abbreviated as "gas barrier laminate”) is held under high temperature and high humidity conditions, its water vapor permeability may increase.
- the present invention has been made in view of such circumstances, and an object of the present invention is a coating capable of producing a gas barrier laminate showing low water vapor permeability even after being held under high temperature and high humidity conditions. To provide the liquid.
- a coating liquid preferably 1,500 ppm or less, more preferably 1,000 ppm or less.
- the amount of sodium (Na) in the coating liquid is 0.01 ppm or more, more preferably 0.1 ppm or more, still more preferably 1 ppm or more based on the weight of the solid content of the coating liquid.
- the amount of hydroxy groups per 100 g of hydroxy group-containing resin is 1.50 to 2.27 mol, more preferably 1.55 to 2.20 mol, still more preferably 1.60 to 2.10 mol. ] Or [2].
- the amount of amino groups per 100 g of the hydroxy group-containing resin is 0.046 to 0.682 mol, more preferably 0.060 to 0.50 mol, still more preferably 0.10 to 0.30 mol. ] The coating liquid described in.
- the number average molecular weight of the hydroxy group-containing resin is 10,000 to 50,000, more preferably 12,000 to 40,000, still more preferably 15,000 to 30,000.
- the content of the hydroxy group-containing resin is 0.4% by weight or more, more preferably 0.5% by weight or more, particularly preferably 1.0% by weight or more, most preferably 1.0% by weight or more, based on the entire coating liquid.
- the content of the hydroxy group-containing resin is 8.0% by weight or less, more preferably 6.0% by weight or less, particularly preferably 5.5% by weight or less, and most preferably, with respect to the entire coating liquid.
- the coating liquid according to the above [9] or [10] which is 4.0% by weight or less.
- the liquid medium contains water and at least one selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol and 1-butanol.
- the total amount of at least one selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol and 1-butanol is 1 to 70 parts by weight, more preferably 5 to 60 parts by weight per 100 parts by weight of the liquid medium.
- the coating liquid according to the above [12] which is 10 to 50 parts by weight, more preferably 10 to 50 parts by weight.
- the content of the liquid medium is 90 to 99.5% by weight, more preferably 91 to 99% by weight, still more preferably 92 to 98% by weight, based on the entire coating liquid.
- the coating liquid according to any one of [15].
- the content of the inorganic layered compound is 0.050% by weight or more, more preferably 0.10% by weight or more, particularly preferably 0.20% by weight or more, and most preferably 1 with respect to the entire coating liquid.
- the content of the inorganic layered compound is 5.5% by weight or less, more preferably 5.0% by weight or less, still more preferably 4.5% by weight or less, particularly preferably 4.5% by weight or less, based on the entire coating liquid.
- the coating liquid according to the above [19] or [20] which is 4.4% by weight or less, most preferably 4.0% by weight or less.
- the coating film according to the above [23] which has a thickness of 10 nm to 20 ⁇ m, more preferably 20 nm to 10 ⁇ m, and further preferably 30 nm to 10 ⁇ m.
- the inorganic substance forming the inorganic substance layer is an inorganic oxide, more preferably at least one selected from the group consisting of aluminum oxide, silicon oxide and magnesium oxide, and further preferably aluminum oxide.
- the laminate according to. [28] The laminate according to the above [26] or [27], wherein the thickness of the inorganic layer is 1 to 200 nm, more preferably 2 to 150 nm, still more preferably 3 to 100 nm.
- the amount of hydroxy groups per 100 g of hydroxy group-containing resin is 1.50 to 2.27 mol, more preferably 1.55 to 2.20 mol, still more preferably 1.60 to 2.10 mol. ] Or [31].
- the amount of amino groups per 100 g of the hydroxy group-containing resin is 0.046 to 0.682 mol, more preferably 0.060 to 0.50 mol, still more preferably 0.10 to 0.30 mol. ] The coating film described in.
- the number average molecular weight of the hydroxy group-containing resin is 10,000 to 50,000, more preferably 12,000 to 40,000, still more preferably 15,000 to 30,000.
- the coating film according to any one of.
- a laminated body having a laminated structure including the coating film according to any one of the above [30] to [40] and a base material.
- the inorganic substance forming the inorganic substance layer is an inorganic oxide, more preferably at least one selected from the group consisting of aluminum oxide, silicon oxide and magnesium oxide, and further preferably aluminum oxide.
- the laminate according to. [44] The laminate according to the above [42] or [43], wherein the thickness of the inorganic layer is 1 to 200 nm, more preferably 2 to 150 nm, still more preferably 3 to 100 nm.
- the coating liquid of the present invention contains a hydroxy group-containing resin, an inorganic layered compound, and a liquid medium, and the amount of sodium (Na) in the coating liquid is 2,500 ppm or less based on the weight of the solid content of the coating liquid. It is characterized by being. As a result of diligent studies by the present inventors, it has been found that a gas barrier laminate showing low water vapor permeability can be produced from a coating liquid having a reduced Na content even after being held under high temperature and high humidity conditions. ..
- the amount of Na is preferably 1,500 ppm or less, more preferably 1,000 ppm or less, based on the weight of the solid content of the coating liquid.
- the lower limit of the amount of Na is not particularly limited from the viewpoint of low water vapor permeability, and the amount of Na is preferably low.
- the amount of Na is preferably 0.01 ppm or more, more preferably 0.1 ppm or more, still more preferably 1 ppm or more, based on the weight of the coating liquid with respect to the solid content.
- the weight-based Na amount with respect to the entire coating liquid can be measured by the method described in Examples described later. From this Na amount and the solid content of the coating liquid, the weight-based Na amount with respect to the solid content of the coating liquid can be calculated.
- the solid content of the coating liquid can be calculated by the following method (hereinafter referred to as "drying aid method").
- ⁇ Drying aid method> 1.
- total amount 3 100 x [total amount 3 (g) -total amount 1 (g)] / sample amount (g)
- Sample amount (g) total amount 2 (g) -total amount 1 (g)
- the pH of the coating liquid of the present invention is preferably alkaline from the viewpoint of suppressing corrosion of the inorganic layer. This pH is preferably 7 to 13, more preferably 8.5 to 10.
- the coating liquid of the present invention contains a hydroxy group-containing resin. Only one type of hydroxy group-containing resin may be used, or two or more types may be used in combination.
- the hydroxy group-containing resin may be a homopolymer or a copolymer.
- the copolymer may be a block copolymer, an alternating copolymer, a random copolymer, or a combination thereof.
- Examples of the hydroxy group-containing resin include polyvinyl alcohol (PVA), vinylamine-vinyl alcohol copolymer, (meth) acrylic acid-vinyl alcohol copolymer, ethylene-vinyl alcohol copolymer (EVOH), polysaccharides, and Examples thereof include these derivatives.
- PVA polyvinyl alcohol
- EVOH ethylene-vinyl alcohol copolymer
- polysaccharides and examples thereof include these derivatives.
- (meth) acrylic acid means acrylic acid and / or methacrylic acid.
- the amount of hydroxy groups per 100 g of hydroxy group-containing resin is preferably 1.50 to 2.27 mol, more preferably 1.55 to 2.20 mol, still more preferably 1. It is .60 to 2.10 mol.
- the amount of this hydroxy group can be measured by proton nuclear magnetic resonance (1 H NMR) analysis.
- the hydroxy group-containing resin preferably further has an amino group.
- the amount of amino groups per 100 g of the hydroxy group-containing resin is preferably 0.046 to 0.682 mol, more preferably 0.060 to 0. It is 50 mol, more preferably 0.10 to 0.30 mol.
- the amount of this amino group can be measured by proton nuclear magnetic resonance (1 H NMR) analysis.
- the number average molecular weight of the hydroxy group-containing resin is preferably 10,000 to 50,000, more preferably 12,000 to 40,000. More preferably, it is 15,000 to 30,000. This number average molecular weight can be measured by gel permeation chromatography (GPC).
- the hydroxy group-containing resin is preferably a vinylamine-vinyl alcohol copolymer.
- the vinylamine-vinyl alcohol copolymer may be a block copolymer, an alternating copolymer, a random copolymer, or a combination thereof.
- the vinylamine-vinyl alcohol copolymer is preferably a random copolymer. The amounts of hydroxy and amino groups per 100 g of vinylamine-vinyl alcohol copolymer and their measurement methods are as described above.
- the saponification degree of the vinylamine-vinyl alcohol copolymer is preferably 80 to 100%, more preferably 90 to 100%. More preferably, it is 95 to 100%.
- the "degree of saponification of the vinylamine-vinyl alcohol copolymer” refers to the "hydroxy group (-OH)" that the vinylamine-vinyl alcohol copolymer may have and the "hydroxy group precursor (for example, -O-CO-".
- the content of the hydroxy group-containing resin is preferably 0.2% by weight or more, more preferably 0.4% by weight, based on the entire coating liquid.
- weight% or more more preferably 0.5% by weight or more, particularly preferably 1.0% by weight or more, most preferably 2.0% by weight or more, preferably 9.05% by weight or less, more preferably 8. It is 0% by weight or less, more preferably 6.0% by weight or less, particularly preferably 5.5% by weight or less, and most preferably 4.0% by weight or less.
- the coating liquid of the present invention contains an inorganic layered compound.
- the inorganic layered compound only one kind may be used, or two or more kinds may be used in combination.
- Examples of the inorganic layered compound include clay minerals. Only one type of clay mineral may be used, or two or more types may be used in combination.
- Clay minerals include, for example, kaolinite, dikite, nalcrite, pyrophyllite, antigolite, chrysotile, pyrophyllite, montmorillonite, biderite, nontronite, saponite, saponite, stavenite, hectrite, tetracylic mica, and sodium. Examples include teniolite, muscovite, margarite, talc, vermiculite, phlogopite, zansophyllite, chlorite, and hydrotalcite.
- the clay mineral may have improved dispersibility and the like by treatment with an organic substance (for example, ion exchange).
- the inorganic layered compound is preferably a smectite group clay mineral.
- the smectite group clay mineral only one kind may be used, or two or more kinds may be used in combination.
- Examples of smectite clay minerals include montmorillonite, biderite, nontronite, saponite, saponite, stephensite, and hectorite.
- the inorganic layered compound is more preferably montmorillonite.
- the smectite group clay mineral particularly montmorillonite
- the content of the inorganic layered compound is preferably 0.047% by weight or more, more preferably 0.050% by weight, based on the entire coating liquid. 5.
- the content of the inorganic layered compound is preferably 0.047% by weight or more, more preferably 0.050% by weight, based on the entire coating liquid. 5.
- weight or more more preferably 0.10% by weight or more, particularly preferably 0.20% by weight or more, most preferably 1.0% by weight or more, preferably 6.0% by weight or less, more preferably 5.
- It is 5% by weight or less, more preferably 5.0% by weight or less, further preferably 4.5% by weight or less, particularly preferably 4.4% by weight or less, and most preferably 4.0% by weight or less.
- the coating liquid of the present invention contains a liquid medium.
- the liquid medium preferably comprises water and a liquid organic medium.
- the “liquid medium” means a medium that is liquid at 25 ° C. and 1 atm
- the “liquid organic medium” means an organic compound that is liquid at 25 ° C. and 1 atm.
- the liquid organic medium only one kind may be used, or two or more kinds may be used in combination.
- liquid organic medium examples include monohydric alcohol, glycol, dimethylformamide, dimethyl sulfoxide, acetone and the like.
- monohydric alcohol examples include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol and the like.
- the amount thereof is preferably 1 to 70 parts by weight, more preferably 5 to 60 parts by weight, and further preferably 10 to 50 parts by weight per 100 parts by weight of the liquid medium.
- the liquid medium preferably comprises water and at least one selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol and 1-butanol, more preferably water. It consists of at least one selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol and 1-butanol.
- the total amount of at least one selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol and 1-butanol in this embodiment is a liquid medium from the viewpoint of the stability of the coating liquid and the drying time at the time of coating. It is preferably 1 to 70 parts by weight, more preferably 5 to 60 parts by weight, and further preferably 10 to 50 parts by weight per 100 parts by weight.
- the liquid medium preferably comprises water and ethanol, more preferably composed of water and ethanol.
- the amount of ethanol in this embodiment is preferably 1 to 70 parts by weight, more preferably 5 to 60 parts by weight, and further, from the viewpoint of stability of the coating liquid and drying time at the time of coating, per 100 parts by weight of the liquid medium. It is preferably 10 to 50 parts by weight.
- the content of the liquid medium is preferably 90 to 99.5% by weight, more preferably 91 to 99% by weight, still more preferably 92, based on the entire coating liquid. ⁇ 98% by weight.
- the coating liquid of the present invention may contain other components different from the above-mentioned hydroxy group-containing resin, inorganic layered compound and liquid medium as long as the effects of the present invention are not impaired.
- examples of other components include chelate compounds, surfactants and the like.
- the other components only one kind may be used, or two or more kinds may be used in combination.
- the coating liquid of the present invention prepares a dispersion liquid by mixing and stirring the above-mentioned hydroxy group-containing resin, inorganic layered compound and liquid medium, and other components as necessary, and is contained in the obtained dispersion liquid. It can be produced by reducing the amount of Na.
- the mixing order of the components is not particularly limited, and for example, a dispersion liquid before reducing the amount of Na can be prepared by the following method. 1) A solution of a hydroxy group-containing resin is produced by mixing a hydroxy group-containing resin and a liquid medium and stirring while heating, and an inorganic layered compound is added to the obtained solution of the hydroxy group-containing resin to obtain the obtained solution. A method of preparing a dispersion by stirring the mixture. 2) The inorganic layered compound and the liquid medium are mixed and stirred to produce a dispersion of the inorganic layered compound, and the obtained dispersion of the inorganic layered compound and a separately produced solution of a hydroxy group-containing resin are mixed.
- a method of preparing a dispersion by stirring 3) A dispersion of the inorganic layered compound is produced by mixing the inorganic layered compound and the liquid medium and stirring, and a hydroxy group-containing resin is added to the obtained dispersion of the inorganic layered compound and stirred while heating.
- the temperature at which the hydroxy group-containing resin and the liquid medium are mixed and stirred to produce a solution, or the dispersion liquid of the inorganic layered compound and the hydroxy group-containing resin are mixed and stirred to dissolve the hydroxy group-containing resin in the liquid medium is preferably 50 to 100 ° C., more preferably 60 to 100 ° C., and the stirring speed is preferably 300 to 5,000 rpm, more preferably 500 to 3,000 rpm, and stirring is performed.
- the peripheral speed of the above is preferably 1 to 8 m / min, more preferably 2 to 6 m / min, and the stirring time is preferably 10 to 120 minutes, more preferably 20 to 110 minutes.
- the temperature of the above is preferably 20 to 100 ° C., more preferably 30 to 80 ° C., and the stirring speed thereof is preferably 500 to 5,000 rpm, more preferably 1,000 to 5,000 rpm, and stirring.
- the peripheral speed of the above is preferably 1 to 20 m / min, more preferably 2 to 15 m / min, and the stirring time is preferably 10 to 150 minutes, more preferably 20 to 120 minutes.
- the high-pressure dispersion treatment is a treatment for applying high shear and / or high pressure to the dispersion liquid by passing the dispersion liquid through a plurality of thin tubes at high speed.
- the solution of the hydroxy group-containing resin or the dispersion liquid before mixing the hydroxy group-containing resin may be subjected to high-pressure dispersion treatment, and the solution of the hydroxy group-containing resin or the hydroxy group-containing resin may be treated.
- the dispersion liquid after mixing may be subjected to high pressure dispersion treatment.
- the diameter of the thin tube of the high-pressure disperser is preferably 1 to 1,000 ⁇ m.
- the pressure of the high-pressure dispersion treatment is preferably 500 to 2,000 kgf / cm 2 , more preferably 1,000 to 1,800 kgf / cm 2 .
- the temperature during the high-pressure dispersion treatment is preferably 10 to 50 ° C, more preferably 15 to 45 ° C.
- the amount of Na in the dispersion obtained as described above can be reduced by, for example, a cation exchange treatment using a cation exchange resin.
- the cation exchange resin examples include resins into which a functional group having a cation exchange ability has been introduced. Cation exchange resins can be classified according to the acidity of the functional group. Specifically, the cation exchange resin can be classified into a strongly acidic cation exchange resin having a sulfo group or the like as a functional group, or a weakly acidic cation exchange resin having a carboxy group or the like as a functional group.
- the resin into which a functional group having a cation exchange ability is introduced include a styrene resin, an acrylic resin, and a methacrylic resin.
- the cation exchange resin is classified into a gel type and a macroporous type depending on the difference in the resin structure such as the degree of cross-linking and the porosity.
- the cation exchange resin that can be used in the production of the coating liquid is not particularly limited, and general ones can be used.
- cation exchange resin Commercially available products can be used as the cation exchange resin.
- examples of the commercially available product include “Duolite C255LFH” manufactured by Rohm and Haas, "Diaion SK1B” manufactured by Mitsubishi Chemical Corporation, and “Amberlite IR120B” manufactured by Dow Chemical Corporation.
- a person skilled in the art can appropriately set the amount of the cation exchange resin used and the time of the cation exchange treatment according to the target amount of Na.
- a coating film can be formed by applying the coating liquid of the present invention to a support and drying it.
- the present invention also provides a coating film formed from the above-mentioned coating liquid.
- the present invention is a coating film containing a hydroxy group-containing resin and an inorganic layered compound, wherein the amount of sodium (Na) in the coating film is 2,500 ppm or less based on the weight of the entire coating film.
- the amount of Na in the coating film is preferably 1,500 ppm or less, more preferably 1,000 ppm or less, based on the weight of the entire coating film.
- the lower limit of the amount of Na is not particularly limited from the viewpoint of low water vapor permeability, and the amount of Na is preferably low.
- the amount of Na in the coating film is preferably 0.01 ppm or more, more preferably 0.1 ppm or more, still more preferably 1 ppm or more, based on the weight of the entire coating film.
- the description of the hydroxy group-containing resin and the inorganic layered compound is as described above.
- the coating film of the present invention is preferably used as a gas barrier layer. That is, the coating liquid of the present invention is preferably used for forming the gas barrier layer.
- the thickness of the coating film (gas barrier layer) after drying is preferably 10 nm to 20 ⁇ m, more preferably 20 nm to 10 ⁇ m, and further preferably 30 nm to 10 ⁇ m from the viewpoint of gas barrier properties.
- the support for applying the coating liquid of the present invention may be only a base material, or may be a laminate containing other layers and a base material.
- examples of other layers include an inorganic layer, an adhesive layer, a primer layer and the like.
- Examples of the laminated structure of the laminate to which the coating liquid is applied include “primer layer / base material”, “inorganic material layer / base material”, “inorganic material layer / primer layer / base material”, and “primer layer / inorganic material layer /”. Examples thereof include “base material”, “primer layer / inorganic layer / primer layer / base material”, and “inorganic material layer / first base material / adhesive layer / second base material”.
- each layer and the base material may be a single layer or two or more layers, respectively.
- the “inorganic layer / base material” refers to a state in which the inorganic material layer and the base material are in direct contact with each other. Other expressions have the same meaning.
- the inorganic layer may be formed from only one kind of inorganic substance, or may be formed from two or more kinds of inorganic substances.
- the inorganic substance include metals and inorganic oxides.
- the metal only one kind may be used, or two or more kinds may be used in combination.
- the metal aluminum is preferable.
- the inorganic oxide only one kind may be used, or two or more kinds may be used in combination.
- the inorganic oxide include aluminum oxide, silicon oxide, magnesium oxide and the like.
- As the metal oxide aluminum oxide is preferable because it is inexpensive.
- the inorganic layer is preferably a layer formed by thin film deposition.
- the inorganic substance forming the inorganic substance layer is preferably an inorganic oxide, more preferably at least one selected from the group consisting of aluminum oxide, silicon oxide and magnesium oxide, and further preferably aluminum oxide.
- the thickness of the inorganic layer is preferably 1 to 200 nm, more preferably 2 to 150 nm, and further preferably 3 to 100 nm from the viewpoint of gas barrier properties. When two or more inorganic layers are present, the thickness is the thickness of each inorganic layer.
- the base material only one type may be used, or two or more types may be used in combination.
- the base material include polyesters such as polyethylene terephthalate and polyethylene naphthalate, polyolefins such as polyethylene and polypropylene, polystyrenes, polyamides, polyvinyl chlorides, polycarbonates, polyacrylic nitriles, and polyimides.
- the base material is preferably polyester, more preferably polyethylene terephthalate.
- the thickness of the base material is preferably 5 to 50 ⁇ m, more preferably 7 to 40 ⁇ m, and even more preferably 9 to 30 ⁇ m. When two or more base materials are present, the thickness is the thickness of each base material.
- the method of applying the coating liquid may be a batch method or a continuous method.
- the coating method include a gravure method such as a direct gravure method and a reverse gravure method, a roll coating method such as a two-roll beat coat method, a bottom feed three-roll reverse coat method, a doctor knife method, a die coat method, and a bar coat method. , Dipping method, spray coating method, curtain coating method, spin coating method, flexo coating method, screen coating method, method using a brush or a brush, and the like.
- the drying temperature is preferably 40 to 150 ° C., more preferably 30 to 140 ° C., and the drying time is preferably 0.01 minutes to 24 hours, more preferably 0.01 to 60 minutes.
- the present invention also provides a laminate having a laminated structure containing the above-mentioned coating film and a base material.
- the laminate of the present invention is useful as a gas barrier laminate.
- the description of the coating film and the base material in the laminate of the present invention is as described above.
- the laminate of the present invention may contain the above-mentioned coating film and the base material, and other layers may exist between the layers.
- other layers include an inorganic layer, an adhesive layer, a primer layer and the like. The description of the inorganic layer is as described above.
- Examples of the laminated structure include “coating film / base material”, “coating film / primer layer / base material”, “coating film / inorganic material layer / base material”, and “coating film / inorganic material layer / primer layer / base material”. , “Coating film / Primer layer / Inorganic material layer / Base material”, “Coating film / Primer layer / Inorganic material layer / Primer layer / Base material”, “Coating film / Inorganic material layer / First base material / Adhesive layer / A second base material "and the like can be mentioned.
- each layer and the base material may be a single layer or two or more layers, respectively.
- the laminate of the present invention preferably has a laminated structure containing the above-mentioned coating film, an inorganic layer, and a base material in this order, and the laminate of the present invention is made from the above-mentioned coating film, the inorganic material layer, and the base material. Therefore, it is more preferable to have a laminated structure (that is, "coating film / inorganic layer / base material") in which the coating film, the inorganic material layer and the base material are laminated in this order.
- the inorganic layer and the base material may be two or more layers, but it is more preferable that each is a single layer.
- Each layer (coating film, adhesive layer, primer layer, base material) other than the coating film of the present invention and the inorganic layer constituting the laminate of the present invention can be used as necessary without impairing the effects of the present invention. It may contain one or more additives. Further, the coating liquid for forming the coating film of the present invention (that is, the coating liquid of the present invention) may also contain one or more additives.
- Examples of the additive include a cross-linking agent for a hydrogen-bonding group, an additive having at least one organic functional group, a colorant, and the like.
- Examples of the cross-linking agent for a hydrogen-bonding group include a water-soluble zirconium compound and a water-soluble titanium compound.
- Examples of the organic functional group include a hydroxy group, a formyl group (-CHO), a carbonyl group, a carboxy group, a nitro group, a sulfo group, an oxy group (-O-), an epoxy group, an amino group, an acetoacetyl group and an alkoxy group. , Isocyanato group (-NCO) and the like.
- Additives having at least one organic functional group include, for example, cross-linking agents, coupling agents, UV absorbers, antioxidants, epoxy compounds (eg, glycerol polyglycidyl ethers, polypropylene glycol diglycidyl ethers), maleic acid.
- epoxy compounds eg, glycerol polyglycidyl ethers, polypropylene glycol diglycidyl ethers
- maleic acid examples thereof include resins, modified polyolefin resins, and citric acid.
- epoxy compounds, maleate resins, modified polyolefin resins, and citric acid are preferable from the viewpoint of gas barrier properties and adhesion.
- the characteristics of the raw materials used in Examples and Comparative Examples, and the obtained coating liquid and gas barrier laminate were measured as follows. (1) Amount of hydroxy group and amino group of hydroxy group-containing resin 1) The monomer ratio of the precursor vinyl acetate-N-vinylformamide copolymer was measured by 1 H NMR. 2) The vinyl acetate-N-vinylformamide copolymer was hydrolyzed to produce a vinylamine-vinyl alcohol copolymer. 3) The residual amount of vinyl acetate and N-vinylformamide was measured by 1 H NMR. 4) The above value was converted per 100 g.
- the weight-based Na amount with respect to the solid content of the coating liquid was calculated from the above-mentioned weight-based Na amount with respect to the entire coating liquid and the solid content of the coating liquid. The results are shown in Table 1 below. In Table 1 below, “the weight-based Na amount with respect to the solid content of the coating liquid” is referred to as "Na amount”.
- Example 1 (1) Production of Coating Liquid 110 g of ion-exchanged water and 30 g of a hydroxy group-containing resin were added to a polypropylene container, and the obtained mixture was heated to 90 ° C. while stirring at 1,500 rpm. The mixture was stirred at 90 ° C. and 1,500 rpm for 60 minutes to dissolve the hydroxy group-containing resin in water, and then the resulting solution was cooled to 60 ° C. While stirring the obtained solution at 60 ° C. and 1,500 rpm, 77 g of ethanol was added thereto over 5 minutes, and the obtained mixture was stirred at 60 ° C. and 1,500 rpm for 10 minutes to prepare the solution (A). ) Was obtained.
- the solution (A) and the dispersion liquid (B) were added to a polypropylene container, and the mixture thereof was stirred at 60 ° C., 3,000 rpm and a peripheral speed of 8.2 m / min for 60 minutes. Then, 158 g of ethanol was further added to the mixture over 15 minutes, and the obtained mixture was stirred at 60 ° C. or lower and cooled to room temperature to obtain a dispersion liquid (C).
- the obtained dispersion liquid (C) is subjected to high-pressure dispersion treatment using a high-pressure disperser (“ultra-high pressure homogenizer M110-E / H” manufactured by Microfluidics Corporation, diameter of thin tube: 100 ⁇ m) under the conditions of 30 ° C. and 1250 kgf / cm 2.
- a high-pressure disperser (“ultra-high pressure homogenizer M110-E / H” manufactured by Microfluidics Corporation, diameter of thin tube: 100 ⁇ m) under the conditions of 30 ° C. and 1250 kgf / cm 2.
- a cation exchange resin (Duolite C255LFH (manufactured by Roam & Haas Japan)) was added to the dispersion liquid (D) in an amount of 1.5 parts by weight based on 100 parts by weight of the obtained dispersion liquid (D). Then, the cation exchange resin was removed by filtration to prepare a coating liquid (content of hydroxy group-containing resin per 100% by weight of the coating liquid: 4.0% by weight). , The content of montmorillonite: 2.0% by weight, the content of the liquid medium (water and ethanol): 94.0% by weight. The amount of ethanol per 100 parts by weight of the liquid medium: 33.3 parts by weight). The pH of the coating liquid was 9.4.
- gas barrier laminate The obtained coating liquid is applied to an aluminum oxide vapor deposition film (base material: polyethylene terephthalate (PET), base material thickness: 12 ⁇ m, inorganic layer: aluminum oxide layer, thickness of inorganic material layer: A gas barrier laminate having a laminated structure with a gas barrier layer (coating film) / inorganic layer / base material is applied to an inorganic layer of 5 to 7.5 nm) by a bar coater and dried at 80 ° C. for 20 minutes in a hot air oven. The body was manufactured (thickness of gas barrier layer: 0.2 ⁇ m). The drying was carried out in an air atmosphere under normal pressure.
- base material polyethylene terephthalate (PET)
- inorganic layer aluminum oxide layer
- thickness of inorganic material layer A gas barrier laminate having a laminated structure with a gas barrier layer (coating film) / inorganic layer / base material is applied to an inorganic layer of 5 to 7.5 nm) by a bar coater and dried at 80
- Example 2 In the same manner as in Example 1 except that the cation exchange resin was added to the dispersion liquid (D) in an amount of 6.0 parts by weight with respect to 100 parts by weight of the dispersion liquid (D) obtained in Example 1. A coating liquid and a gas barrier laminate were produced, and the gas barrier laminate was evaluated. The pH of the obtained coating liquid was 9.6.
- Example 3 In the same manner as in Example 1 except that the cation exchange resin was added to the dispersion liquid (D) in an amount of 1.0 part by weight with respect to 100 parts by weight of the dispersion liquid (D) obtained in Example 1.
- a coating liquid (1) was prepared. Further, the same procedure as in Example 1 was carried out except that the cation exchange resin was added to the dispersion liquid (D) in an amount of 4.0 parts by weight with respect to 100 parts by weight of the dispersion liquid (D) obtained in Example 1.
- the coating liquid (2) was prepared. The obtained coating liquid (1) and coating liquid (2) were mixed to produce a coating liquid (3). The pH of the obtained coating liquid (3) was 9.6. Using this coating liquid (3), a gas barrier laminate was produced and evaluated in the same manner as in Example 1.
- Comparative Example 1 In the same manner as in Example 1 except that the cation exchange resin was added to the dispersion liquid (D) in an amount of 1.1 parts by weight with respect to 100 parts by weight of the dispersion liquid (D) obtained in Example 1. A coating liquid and a gas barrier laminate were produced, and the gas barrier laminate was evaluated. The pH of the obtained coating liquid was 9.7.
- Comparative Example 2 In the same manner as in Example 1 except that the cation exchange resin was added to the dispersion liquid (D) in an amount of 0.5 parts by weight with respect to 100 parts by weight of the dispersion liquid (D) obtained in Example 1. A coating liquid and a gas barrier laminate were produced, and the gas barrier laminate was evaluated. The pH of the obtained coating liquid was 10.9.
- Comparative Example 3 A coating liquid and a gas barrier laminate were produced in the same manner as in Example 1 except that the dispersion liquid (D) obtained in Example 1 was not treated with a cation exchange resin and was used as it was as a coating liquid. , The gas barrier laminate was evaluated. The pH of the coating liquid (dispersion liquid (D)) of Comparative Example 3 was 12.2.
- the gas barrier laminates of Examples 1 to 3 produced from a coating liquid in which the amount of Na in the coating liquid is 2,500 ppm or less based on the weight of the solid content of the coating liquid. Showed low water vapor permeation even after being held for 10 hours under high temperature (40 ° C.) and high humidity (90% RH) conditions.
- Reference example 1 The coating solution obtained in Example 2 was applied to the corona-treated surface of a 20 ⁇ m-thick biaxially stretched polypropylene film (hereinafter referred to as “OPP”) (“FOA” manufactured by Futamura Chemical Co., Ltd.) and placed in a hot air oven. By drying at 100 ° C. for 1 minute at 100 ° C., a laminate having a laminated structure with a coating film / substrate (OPP) was obtained.
- OPP biaxially stretched polypropylene film
- Reference example 2 The corona-treated surface of the OPP was subjected to one corona treatment at 60 W and a discharge rate of 6 m / min using a corona surface modification evaluation device (“TEC-4AX” manufactured by Kasuga Electric Works Ltd.).
- TEC-4AX corona surface modification evaluation device
- a laminate having a laminated structure with a coating film / base material (OPP) was obtained in the same manner as in Reference Example 1 except that the coating liquid obtained in Example 2 was applied to the corona-treated surface.
- the solid content of the maleic acid resin aqueous solution (“Marquid 32-30WS” manufactured by Arakawa Chemical Industries, Ltd.) is 5 parts by weight with respect to 100 parts by weight of the solid content of the coating liquid.
- the aqueous maleic acid solution was added, and the mixture was sufficiently stirred and mixed to prepare a coating liquid.
- a laminate having a laminated structure with a coating film / substrate (OPP) was obtained in the same manner as in Reference Example 1 except that the coating liquid thus obtained was used.
- Reference example 4 The amount of maleic acid resin aqueous solution added was changed so that the solid content of the maleic acid resin aqueous solution ("Marquid 32-30WS" manufactured by Arakawa Chemical Industries, Ltd.) was 10 parts by weight with respect to 100 parts by weight of the solid content of the coating liquid.
- a laminate having a laminated structure with a coating film / base material (OPP) was obtained in the same manner as in Reference Example 3 except for the above.
- Reference example 5 The amount of maleic acid resin aqueous solution added was changed so that the solid content of the maleic acid resin aqueous solution ("Marquid 32-30WS" manufactured by Arakawa Chemical Industries, Ltd.) was 20 parts by weight with respect to 100 parts by weight of the solid content of the coating liquid.
- a laminate having a laminated structure with a coating film / base material (OPP) was obtained in the same manner as in Reference Example 3 except for the above.
- the epoxy compound (“Denacol EX-313” manufactured by Nagase ChemteX Corporation, glycerol polyglycidyl ether) is 5 parts by weight based on 100 parts by weight of the solid content of the coating liquid. As described above, the epoxy compound was added, and the mixture was sufficiently stirred and mixed to prepare a coating liquid. A laminate having a laminated structure with a coating film / substrate (OPP) was obtained in the same manner as in Reference Example 1 except that the coating liquid thus obtained was used.
- OPP coating film / substrate
- Reference example 7 In the coating liquid obtained in Example 2, an epoxy compound (“Denacol EX-920” manufactured by Nagase ChemteX Corporation, polypropylene glycol diglycidyl ether) was added to 20 parts by weight with respect to 100 parts by weight of the solid content of the coating liquid. The epoxy compound was added, and the mixture was sufficiently stirred and mixed to prepare a coating liquid. A laminate having a laminated structure with a coating film / substrate (OPP) was obtained in the same manner as in Reference Example 1 except that the coating liquid thus obtained was used.
- OPP coating film / substrate
- Reference example 9 A urethane-based primer (manufactured by Toyo Morton Co., Ltd.) was applied to the corona-treated surface of OPP and dried in a hot air oven at 80 ° C. for 20 minutes to form a primer layer (primer layer thickness: 0.7 ⁇ m). ..
- a laminate having a laminated structure with a coating film / primer layer / base material (OPP) was obtained in the same manner as in Reference Example 1 except that the coating liquid obtained in Example 2 was applied to this primer layer. It was.
- Reference example 10 In the same manner as in Reference Example 9 except that the coating liquid obtained in Reference Example 3 was used instead of the coating liquid obtained in Example 2, the coating film / primer layer / substrate (OPP) was used. A laminate having the above-mentioned laminated structure was obtained.
- a urethane-based adhesive (manufactured by Toyo Morton Co., Ltd.) is applied to the coating film of the laminate obtained in Reference Examples 1 to 10 and dried in a hot air oven at 80 ° C. for 20 minutes to form an adhesive. A layer was formed (thickness of the adhesive layer: 16 ⁇ m).
- An unstretched polypropylene film (“P1111” manufactured by Toyo Boseki Co., Ltd.) having a thickness of 50 ⁇ m as a sealant is attached to this adhesive layer by a dry laminating method, and aged at 40 ° C. for 1 day to obtain a “sealant / adhesive layer”.
- a laminate for evaluation of peel strength having a laminated structure of "/ coating film / base material (OPP)" or "sealant / adhesive layer / coating film / primer layer / base material (OPP)” was obtained.
- the obtained laminate for evaluation of peel strength was cut into strips having a width of 15 mm, and the sealant and the base material were sandwiched between chucks to perform a 180 ° peel test, and the 180 ° peel strength was measured.
- the 180 ° peeling test was carried out using a small tabletop tester (“EZ-LX” manufactured by Shimadzu Corporation) under the conditions of 23 ° C., 50% RH and a tensile speed of 300 mm / min. The results are shown in Table 2 below. If the base material is broken and the 180 ° peel strength cannot be measured, it is described as "material failure" in Table 2 below.
- a gas barrier laminate showing low water vapor permeability even after being held under high temperature and high humidity conditions.
- Such a gas barrier laminate is useful as a packaging material for foods, cosmetics, and the like.
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Abstract
Description
[1] ヒドロキシ基含有樹脂と無機層状化合物と液状媒体とを含む塗工液であって、塗工液中のナトリウム(Na)量が、塗工液の固形分に対する重量基準で2,500ppm以下、好ましくは1,500ppm以下、より好ましくは1,000ppm以下である塗工液。
[2] 塗工液中のナトリウム(Na)量が、塗工液の固形分に対する重量基準で0.01ppm以上、より好ましくは0.1ppm以上、さらに好ましくは1ppm以上である前記[1]に記載の塗工液。
[5] ヒドロキシ基含有樹脂100gあたりのアミノ基の量が、0.046~0.682mol、より好ましくは0.060~0.50mol、さらに好ましくは0.10~0.30molである前記[4]に記載の塗工液。
[8] ビニルアミン-ビニルアルコール共重合体のけん化度が、80~100%、より好ましくは90~100%、さらに好ましくは95~100%である前記[7]に記載の塗工液。
[10] ヒドロキシ基含有樹脂の含有量が、塗工液全体に対して、0.4重量%以上、さらに好ましくは0.5重量%以上、特に好ましくは1.0重量%以上、最も好ましくは2.0重量%以上である前記[9]に記載の塗工液。
[11] ヒドロキシ基含有樹脂の含有量が、塗工液全体に対して、8.0重量%以下、さらに好ましくは6.0重量%以下、特に好ましくは5.5重量%以下、最も好ましくは4.0重量%以下である前記[9]または[10]に記載の塗工液。
[13] メタノール、エタノール、1-プロパノール、2-プロパノールおよび1-ブタノールからなる群から選ばれる少なくとも一つの合計量が、液状媒体100重量部あたり1~70重量部、より好ましくは5~60重量部、さらに好ましくは10~50重量部である前記[12]に記載の塗工液。
[15] エタノールの量が、液状媒体100重量部あたり1~70重量部、より好ましくは5~60重量部、さらに好ましくは10~50重量部である前記[14]に記載の塗工液。
[18] 無機層状化合物が、モンモリロナイトである前記[1]~[16]のいずれか一つに記載の塗工液。
[20] 無機層状化合物の含有量が、塗工液全体に対して、0.050重量%以上、さらに好ましくは0.10重量%以上、特に好ましくは0.20重量%以上、最も好ましくは1.0重量%以上である前記[19]に記載の塗工液。
[21] 無機層状化合物の含有量が、塗工液全体に対して、5.5重量%以下、より一層好ましくは5.0重量%以下、さらに好ましくは4.5重量%以下、特に好ましくは4.4重量%以下、最も好ましくは4.0重量%以下である前記[19]または[20]に記載の塗工液。
[24] 厚さが、10nm~20μm、より好ましくは20nm~10μm、さらに好ましくは30nm~10μmである前記[23]に記載の塗膜。
[27] 無機物層を形成する無機物が、無機酸化物であり、より好ましくは酸化アルミニウム、酸化ケイ素および酸化マグネシウムからなる群から選ばれる少なくとも一つであり、さらに好ましくは酸化アルミニウムである前記[26]に記載の積層体。
[28] 無機物層の厚さが、1~200nm、より好ましくは2~150nm、さらに好ましくは3~100nmである前記[26]または[27]に記載の積層体。
[31] 塗膜中のナトリウム(Na)量が、塗膜全体に対する重量基準で0.01ppm以上、より好ましくは0.1ppm以上、さらに好ましくは1ppm以上である前記[30]に記載の塗膜。
[34] ヒドロキシ基含有樹脂100gあたりのアミノ基の量が、0.046~0.682mol、より好ましくは0.060~0.50mol、さらに好ましくは0.10~0.30molである前記[33]に記載の塗膜。
[37] ビニルアミン-ビニルアルコール共重合体のけん化度が、80~100%、より好ましくは90~100%、さらに好ましくは95~100%である前記[36]に記載の塗膜。
[39] 無機層状化合物が、モンモリロナイトである前記[30]~[37]のいずれか一つに記載の塗膜。
[43] 無機物層を形成する無機物が、無機酸化物であり、より好ましくは酸化アルミニウム、酸化ケイ素および酸化マグネシウムからなる群から選ばれる少なくとも一つであり、さらに好ましくは酸化アルミニウムである前記[42]に記載の積層体。
[44] 無機物層の厚さが、1~200nm、より好ましくは2~150nm、さらに好ましくは3~100nmである前記[42]または[43]に記載の積層体。
以下、本発明の塗工液について順に説明する。なお、後述の例示、好ましい記載等は、これらが互いに矛盾しない限り、組み合わせることができる。
1.乾燥助剤
無水硫酸ナトリウム(105℃×120分以上乾燥させたもの)
2.操作
(1)110mLのアルミカップを乾燥機に入れ、130℃×60分で乾燥した後、取出し、デシケーター内で30分間放冷する。
(2)放冷後のアルミカップに無水硫酸ナトリウムを20~30g入れ、アルミカップおよび無水硫酸ナトリウムの合計量(以下「合計量1」と記載する)を秤量する。
(3)試料(塗工液)を、上記(2)のアルミカップ(即ち、無水硫酸ナトリウムを入れたアルミカップ)に1.5~2.0g入れ、アルミカップ、無水硫酸ナトリウムおよび試料の合計量(以下「合計量2」と記載する)を秤量する。
(4)アルミカップ中の無水硫酸ナトリウムおよび試料が均一になるまでかき混ぜる。
(5)上記(4)のアルミカップ(即ち、無水硫酸ナトリウムおよび試料を入れたアルミカップ)を乾燥機に入れ、105℃×120分で乾燥した後、取出し、デシケーター内で30分間放冷する。
(6)放冷後の乾燥物およびアルミカップの合計量(以下「合計量3」と記載する)を秤量する。
(7)下記式より、試料(塗工液)の固形分を算出する。
固形分(重量%)
=100×[合計量3(g)-合計量1(g)]/試料量(g)
試料量(g)=合計量2(g)-合計量1(g)
本発明の塗工液は、ヒドロキシ基含有樹脂を含む。ヒドロキシ基含有樹脂は1種のみを使用してもよく、2種以上を併用してもよい。
本発明の塗工液は、無機層状化合物を含む。無機層状化合物は、1種のみを使用してもよく、2種以上を併用してもよい。
本発明の塗工液は、液状媒体を含む。液状媒体は、好ましくは水および液状の有機媒体を含む。ここで「液状媒体」とは、25℃および1気圧で液状である媒体を意味し、「液状の有機媒体」とは、25℃および1気圧で液状である有機化合物を意味する。液状の有機媒体は、1種のみを使用してもよく、2種以上を併用してもよい。
本発明の塗工液は、本発明の効果を阻害しない範囲で、上述のヒドロキシ基含有樹脂、無機層状化合物および液状媒体とは異なる他の成分を含有していてもよい。他の成分としては、例えば、キレート化合物、界面活性剤等が挙げられる。他の成分は、いずれも、1種のみを使用してもよく、2種以上を併用してもよい。
本発明の塗工液は、上述のヒドロキシ基含有樹脂、無機層状化合物および液状媒体、並びに必要に応じて他の成分を混合および撹拌することによって分散液を調製し、得られた分散液中のNa量を低減することによって製造することができる。
1)ヒドロキシ基含有樹脂および液状媒体を混合し、加熱しながら撹拌することによって、ヒドロキシ基含有樹脂の溶液を製造し、得られたヒドロキシ基含有樹脂の溶液に無機層状化合物を添加し、得られた混合物を撹拌することによって分散液を調製する方法。
2)無機層状化合物および液体媒体を混合し、攪拌することによって、無機層状化合物の分散液を製造し、得られた無機層状化合物の分散液と、別途製造したヒドロキシ基含有樹脂の溶液とを混合および攪拌して分散液を調製する方法。
3)無機層状化合物および液体媒体を混合し、攪拌することによって、無機層状化合物の分散液を製造し、得られた無機層状化合物の分散液にヒドロキシ基含有樹脂を添加し、加熱しながら攪拌することによって、ヒドロキシ基含有樹脂を液状媒体に溶解させて、分散液を調製する方法。
本発明の塗工液を支持体に塗布し、乾燥させることによって塗膜を形成することができる。本発明は、上述の塗工液から形成された塗膜も提供する。
実施例および比較例で使用した原料を以下に記載する。
(1)ヒドロキシ基含有樹脂
ヒドロキシ基含有樹脂:ビニルアミン-ビニルアルコール共重合体(セキスイ・スペシャルティ・ケミカルズ・アメリカ・エルエルシー社製「Ultiloc5003」、ランダム共重合体、ヒドロキシ基含有樹脂100gあたりのヒドロキシ基の量:2mol、ヒドロキシ基含有樹脂100gあたりのアミノ基の量:0.27mol、数平均分子量:20,000、けん化度:99%)
高純度モンモリロナイト(クニミネ工業社製「クニピアG」、単位結晶層の厚さa:1.2156nm)
イオン交換水(比電気伝導率:0.7μs/cm以下)
エタノール
実施例および比較例で使用した原料、並びに得られた塗工液およびガスバリア積層体の特性を以下のようにして測定した。
(1)ヒドロキシ基含有樹脂のヒドロキシ基およびアミノ基の量
1)前駆体の酢酸ビニル-N-ビニルホルムアミド共重合体のモノマー比率を1H NMRにて測定した。
2)酢酸ビニル-N-ビニルホルムアミド共重合体を加水分解し、ビニルアミン-ビニルアルコール共重合体を生成させた。
3)酢酸ビニル、N-ビニルホルムアミドの残存量を1H NMRにて測定した。
4)上記値を100gあたりに換算した。
(測定装置および条件)
1H NMR装置(400MHz):Bruker 社製「Bruker Avance 400」
溶媒:DMSO-d6
試料濃度:1重量%
測定温度:25℃
積算回数:16回
D1(パルス間delay):0.1秒
ヒドロキシ基含有樹脂の数平均分子量を、以下の装置および条件のゲル浸透クロマトグラフィー(GPC)によって測定した。結果は上記の通りである。
(装置および条件)
GPC装置:Malvern社製「Viscotek TDA305」
カラム:SOLDEX社製「SB804X2+802.5」
試料溶液:測定試料(濃度1重量%)、NaNO3(pH調整剤、濃度0.05M)およびアジ化ナトリウム(防カビ剤、濃度0.00077M)を含有する水溶液
検出器温度:30℃
カラム温度:30℃
実施例および比較例で得られた塗工液から、それぞれサンプルを採取し、酸分解処理し、ICP発光分析装置(Agilent Technologies社製「Vista-PRO」)を用いる誘導結合プラズマ発光分光分析法(ICP-AES)によって、サンプル(塗工液)全体に対する重量基準のNa量を測定した。
後述の実施例および比較例のガスバリア積層体の水蒸気透過度を、JIS K7129-2008 B法に準じて、水蒸気透過率測定装置(MOCON社製「PERMATRAN-W 3/33」)を用い、40℃および90%RHの条件下で測定した。なお、この測定では、ガスバリア層/無機物層/基材との積層構造を有するガスバリア積層体の基材側から水蒸気を供給した(即ち、試験片の水蒸気供給面は基材であった)。結果を下記表1に示す。
実施例1
(1)塗工液の製造
ポリプロピレン製容器に、イオン交換水110gと、ヒドロキシ基含有樹脂30gとを添加し、得られた混合物を1,500rpmで撹拌しながら、90℃に昇温した。混合物を90℃および1,500rpmで60分間撹拌してヒドロキシ基含有樹脂を水に溶解させたのち、得られた溶液を60℃に冷却した。得られた溶液を60℃および1,500rpmで攪拌しながら、そこに、エタノール77gを5分間かけて添加し、得られた混合物を60℃および1,500rpmで10分間撹拌して、溶液(A)を得た。
得られた塗工液を、酸化アルミニウム蒸着フィルム(基材:ポリエチレンテレフタレート(PET)、基材厚さ:12μm、無機物層:酸化アルミニウム層、無機物層の厚さ:5~7.5nm)の無機物層にバーコーターによって塗布し、熱風オーブン内にて80℃および20分間乾燥させて、ガスバリア層(塗膜)/無機物層/基材との積層構造を有するガスバリア積層体を製造した(ガスバリア層の厚さ:0.2μm)。なお、乾燥は、常圧の大気雰囲気下で行った。
40℃および90%RHの条件で1時間保持した後のガスバリア積層体の水蒸気透過度(I)、並びに40℃および90%RHの条件で10時間保持した後のガスバリア積層体の水蒸気透過度(II)、それぞれの上述のようにして測定した。結果を下記表1に示す。また、下記表1の「(II)/(I)」欄に、水蒸気透過度(II)および水蒸気透過度(I)の比(水蒸気透過度(II)/水蒸気透過度(I))を記載する。
実施例1で得られた分散液(D)100重量部に対して6.0重量部の量で陽イオン交換樹脂を分散液(D)に加えたこと以外は実施例1と同様にして、塗工液およびガスバリア積層体を製造し、ガスバリア積層体を評価した。得られた塗工液のpHは9.6であった。
実施例1で得られた分散液(D)100重量部に対して1.0重量部の量で陽イオン交換樹脂を分散液(D)に加えたこと以外は実施例1と同様にして、塗工液(1)を作製した。また、実施例1で得られた分散液(D)100重量部に対して4.0重量部の量で陽イオン交換樹脂を分散液(D)に加えたこと以外は実施例1と同様にして、塗工液(2)を作製した。得られた塗工液(1)および塗工液(2)を混合し、塗工液(3)を製造した。得られた塗工液(3)のpHは9.6であった。この塗工液(3)を用いて実施例1と同様にしてガスバリア積層体を製造および評価した。
実施例1で得られた分散液(D)100重量部に対して1.1重量部の量で陽イオン交換樹脂を分散液(D)に加えたこと以外は実施例1と同様にして、塗工液およびガスバリア積層体を製造し、ガスバリア積層体を評価した。得られた塗工液のpHは9.7であった。
実施例1で得られた分散液(D)100重量部に対して0.5重量部の量で陽イオン交換樹脂を分散液(D)に加えたこと以外は実施例1と同様にして、塗工液およびガスバリア積層体を製造し、ガスバリア積層体を評価した。得られた塗工液のpHは10.9であった。
実施例1で得られた分散液(D)を陽イオン交換樹脂で処理せず、そのまま塗工液として使用したこと以外は実施例1と同様にして、塗工液およびガスバリア積層体を製造し、ガスバリア積層体を評価した。比較例3の塗工液(分散液(D))のpHは12.2であった。
厚さ20μmの二軸延伸ポリプロピレンフィルム(以下「OPP」と記載する)(フタムラ化学社製「FOA」)のコロナ処理面に、実施例2で得られた塗工液を塗布し、熱風オーブン内にて100℃および1分間乾燥させることによって、塗膜/基材(OPP)との積層構造を有する積層体を得た。
OPPのコロナ処理面にコロナ表面改質評価装置(春日電機社製「TEC-4AX」)にて60Wおよび放電速度6m/minでコロナ処理を1回施した。当該コロナ処理面に、実施例2で得られた塗工液を塗布したこと以外は参考例1と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
実施例2で得られた塗工液に、塗工液の固形分100重量部に対してマレイン酸レジン水溶液(荒川化学工業社製「マルキード 32-30WS」)の固形分が5重量部となるように、前記マレイン酸レジン水溶液を添加し、十分に撹拌および混合して、塗工液を作製した。このようにして得られた塗工液を使用したこと以外は参考例1と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
塗工液の固形分100重量部に対してマレイン酸レジン水溶液(荒川化学工業社製「マルキード 32-30WS」)の固形分が10重量部になるように、マレイン酸レジン水溶液の添加量を変更したこと以外は参考例3と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
塗工液の固形分100重量部に対してマレイン酸レジン水溶液(荒川化学工業社製「マルキード 32-30WS」)の固形分が20重量部になるように、マレイン酸レジン水溶液の添加量を変更したこと以外は参考例3と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
実施例2で得られた塗工液に、塗工液の固形分100重量部に対してエポキシ化合物(ナガセケムテックス社製「デナコール EX-313」、グリセロールポリグリシジルエーテル)が5重量部となるように、前記エポキシ化合物を添加し、十分に撹拌および混合して、塗工液を作製した。このようにして得られた塗工液を使用したこと以外は参考例1と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
実施例2で得られた塗工液に、塗工液の固形分100重量部に対してエポキシ化合物(ナガセケムテックス社製「デナコール EX-920」、ポリプロピレングリコールジグリシジルエーテル)が20重量部となるように、前記エポキシ化合物を添加し、十分に撹拌および混合して、塗工液を作製した。このようにして得られた塗工液を使用したこと以外は参考例1と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
実施例2で得られた塗工液に、塗工液の固形分100重量部に対して変性ポリオレフィン樹脂水性分散体(ユニチカ社製「アローベース DA-1010」)の固形分が20重量部となるように、前記変性ポリオレフィン樹脂水性分散体を添加し、十分に撹拌および混合して、塗工液を作製した。このようにして得られた塗工液を使用したこと以外は参考例1と同様にして、塗膜/基材(OPP)との積層構造を有する積層体を得た。
OPPのコロナ処理面にウレタン系のプライマー(東洋モートン社製)を塗布し、熱風オーブン内にて80℃および20分間乾燥させて、プライマー層を形成した(プライマー層の厚さ:0.7μm)。このプライマー層に、実施例2で得られた塗工液を塗布したこと以外は参考例1と同様にして、塗膜/プライマー層/基材(OPP)との積層構造を有する積層体を得た。
実施例2で得られた塗工液の代わりに、参考例3で得られた塗工液を使用したこと以外は参考例9と同様にして、塗膜/プライマー層/基材(OPP)との積層構造を有する積層体を得た。
参考例1~10で得られた積層体の塗膜にウレタン系の接着剤(東洋モートン社製)を塗布し、熱風オーブン内にて80℃および20分間乾燥させて、接着剤層を形成した(接着剤層の厚さ:16μm)。この接着剤層に、シーラントとして厚さ50μmの無延伸ポリプロピレンフィルム(東洋紡社製「P1111」)をドライラミネート法により貼り合せ、40℃にて1日間エージングを施すことにより、「シーラント/接着剤層/塗膜/基材(OPP)」または「シーラント/接着剤層/塗膜/プライマー層/基材(OPP)」との積層構造を有する剥離強度評価用の積層体を得た。
Claims (19)
- ヒドロキシ基含有樹脂と無機層状化合物と液状媒体とを含む塗工液であって、塗工液中のナトリウム(Na)量が、塗工液の固形分に対する重量基準で2,500ppm以下である塗工液。
- ヒドロキシ基含有樹脂100gあたりのヒドロキシ基の量が、1.50~2.27molである請求項1に記載の塗工液。
- ヒドロキシ基含有樹脂が、さらにアミノ基を有する請求項1または2に記載の塗工液。
- ヒドロキシ基含有樹脂100gあたりのアミノ基の量が、0.046~0.682molである請求項3に記載の塗工液。
- ヒドロキシ基含有樹脂の数平均分子量が、10,000~50,000である請求項1~4のいずれか一項に記載の塗工液。
- ヒドロキシ基含有樹脂が、ビニルアミン-ビニルアルコール共重合体である請求項1~5のいずれか一項に記載の塗工液。
- ヒドロキシ基含有樹脂の含有量が、塗工液全体に対して、0.2~9.05重量%である請求項1~6のいずれか一項に記載の塗工液。
- 液状媒体が、水と、メタノール、エタノール、1-プロパノール、2-プロパノールおよび1-ブタノールからなる群から選ばれる少なくとも一つとを含む請求項1~7のいずれか一項に記載の塗工液。
- メタノール、エタノール、1-プロパノール、2-プロパノールおよび1-ブタノールからなる群から選ばれる少なくとも一つの合計量が、液状媒体100重量部あたり1~70重量部である請求項8に記載の塗工液。
- 液状媒体が、水およびエタノールを含む請求項1~7のいずれか一項に記載の塗工液。
- エタノールの量が、液状媒体100重量部あたり1~70重量部である請求項10に記載の塗工液。
- 液状媒体の含有量が、塗工液全体に対して、90~99.5重量%である請求項1~11のいずれか一項に記載の塗工液。
- 無機層状化合物が、粘土鉱物である請求項1~12のいずれか一項に記載の塗工液。
- 無機層状化合物が、モンモリロナイトである請求項1~12のいずれか一項に記載の塗工液。
- 無機層状化合物の含有量が、塗工液全体に対して、0.047~6.0重量%である請求項1~14のいずれか一項に記載の塗工液。
- 請求項1~15のいずれか一項に記載の塗工液から形成された塗膜。
- 請求項16に記載の塗膜と、基材とを含む積層構造を有する積層体。
- ヒドロキシ基含有樹脂と無機層状化合物とを含む塗膜であって、塗膜中のナトリウム(Na)量が、塗膜全体に対する重量基準で2,500ppm以下である塗膜。
- 請求項18に記載の塗膜と、基材とを含む積層構造を有する積層体。
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WO2023042722A1 (ja) * | 2021-09-15 | 2023-03-23 | 住友化学株式会社 | ガスバリア積層体 |
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WO2023132255A1 (ja) * | 2022-01-07 | 2023-07-13 | 住友化学株式会社 | 樹脂組成物 |
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EP4059711A4 (en) | 2023-11-29 |
JP2022161943A (ja) | 2022-10-21 |
JPWO2021095755A1 (ja) | 2021-11-25 |
JP7179976B2 (ja) | 2022-11-29 |
US20220363935A1 (en) | 2022-11-17 |
CN114585695A (zh) | 2022-06-03 |
KR20220097906A (ko) | 2022-07-08 |
EP4059711A1 (en) | 2022-09-21 |
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