WO2013118562A1 - ラミネート用接着剤および積層体 - Google Patents
ラミネート用接着剤および積層体 Download PDFInfo
- Publication number
- WO2013118562A1 WO2013118562A1 PCT/JP2013/050913 JP2013050913W WO2013118562A1 WO 2013118562 A1 WO2013118562 A1 WO 2013118562A1 JP 2013050913 W JP2013050913 W JP 2013050913W WO 2013118562 A1 WO2013118562 A1 WO 2013118562A1
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- WIPO (PCT)
- Prior art keywords
- polyisocyanate
- group
- water
- adhesive
- laminate
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/283—Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/703—Isocyanates or isothiocyanates transformed in a latent form by physical means
- C08G18/705—Dispersions of isocyanates or isothiocyanates in a liquid medium
- C08G18/706—Dispersions of isocyanates or isothiocyanates in a liquid medium the liquid medium being water
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/724—Combination of aromatic polyisocyanates with (cyclo)aliphatic polyisocyanates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/757—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing at least two isocyanate or isothiocyanate groups linked to the cycloaliphatic ring by means of an aliphatic group
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
- C09J201/02—Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C09J201/06—Adhesives 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
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- B32B2307/00—Properties of the layers or laminate
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- B32B2307/7246—Water vapor barrier
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- B32B2553/00—Packaging equipment or accessories not otherwise provided for
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2170/00—Compositions for adhesives
- C08G2170/80—Compositions for aqueous adhesives
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
Definitions
- the present invention relates to a laminating adhesive and a laminate, and more particularly, to a laminating adhesive and a laminate suitably used for producing a laminate such as a composite film.
- a composite film in which a plastic film and a metal foil or a metal vapor-deposited film are bonded with an adhesive for laminating is excellent in light shielding properties, gas and liquid barrier properties, and such barrier properties are required. Widely used as various materials.
- a laminating adhesive used for bonding a composite film a two-component curable adhesive composed of a polyisocyanate component and a polyol component is widely known.
- a composite film having excellent barrier properties is produced by laminating a plastic film such as a polyethylene terephthalate (PET) film and a film on which aluminum is deposited using the solventless laminating adhesive. be able to.
- PET polyethylene terephthalate
- a barrier layer such as a metal foil or a metal vapor-deposited film is essential. There is a problem that the appearance and the like are restricted by the barrier layer.
- An object of the present invention is to provide an adhesive for laminate and a laminate that can ensure excellent barrier properties.
- the adhesive for laminate of the present invention is prepared from an aqueous resin obtained by reacting an isocyanate group-terminated prepolymer having an anionic group and a chain extender, a wettable inorganic layered compound, and a water-dispersible polyisocyanate curing agent. It is characterized by being.
- the water-dispersible polyisocyanate curing agent is blended at a ratio of 100 to 500 parts by mass with respect to 100 parts by mass of the wettable inorganic layered compound. .
- the isocyanate group-terminated prepolymer includes at least one polyisocyanate selected from the group consisting of aromatic polyisocyanates, araliphatic polyisocyanates, and alicyclic polyisocyanates; It is preferably obtained by reacting a polyol having 2 to 8 carbon atoms with an anionic group-containing polyol having 3 to 6 carbon atoms.
- the water-dispersible polyisocyanate curing agent contains an aliphatic polyisocyanate and / or an alicyclic polyisocyanate.
- the water-dispersible polyisocyanate curing agent contains an aliphatic polyisocyanate and an alicyclic polyisocyanate.
- the laminate of the present invention is characterized by being obtained using the above-mentioned laminating adhesive.
- the adhesive for laminate of the present invention is prepared from an aqueous resin obtained by reacting an isocyanate group-terminated prepolymer having an anionic group and a chain extender, a wettable inorganic layered compound, and a water-dispersible polyisocyanate curing agent. Therefore, it has excellent barrier properties.
- the laminate of the present invention obtained using the adhesive for laminate of the present invention can have excellent barrier properties.
- the laminate adhesive of the present invention is prepared from an aqueous resin, a wettable inorganic layered compound, and a water-dispersible polyisocyanate curing agent.
- the aqueous resin is obtained by reacting an isocyanate group-terminated prepolymer having an anionic group and a chain extender.
- the isocyanate group-terminated prepolymer is obtained, for example, by reacting a polyisocyanate, a polyol, and an anionic group-containing polyol.
- polyisocyanate examples include aromatic polyisocyanate, araliphatic polyisocyanate, alicyclic polyisocyanate, and aliphatic polyisocyanate.
- Aromatic polyisocyanates include, for example, 4,4'-, 2,4'- or 2,2'-diphenylmethane diisocyanate or mixtures thereof (MDI), 2,4- or 2,6-tolylene diisocyanate or mixtures thereof (TDI), 4,4'-toluidine diisocyanate (TODI), 1,5-naphthalene diisocyanate (NDI), m- or p-phenylene diisocyanate or mixtures thereof, 4,4'-diphenyl diisocyanate, 4,4'-diphenyl ether Aromatic diisocyanates such as diisocyanates are mentioned.
- MDI 4,4'-, 2,4'- or 2,2'-diphenylmethane diisocyanate or mixtures thereof
- TDI 2,4- or 2,6-tolylene diisocyanate or mixtures thereof
- TODI 4,4'-toluidine diisocyanate
- NDI 1,5-naphthalene diis
- araliphatic polyisocyanate examples include 1,3- or 1,4-xylylene diisocyanate or a mixture thereof (XDI), 1,3- or 1,4-tetramethylxylylene diisocyanate or a mixture thereof (TMXDI), and araliphatic diisocyanates such as ⁇ , ⁇ ′-diisocyanate-1,4-diethylbenzene.
- alicyclic polyisocyanates examples include 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (isophorone diisocyanate, IPDI), 4,4'-, 2,4'- or 2,2'-dicyclohexyl.
- Methane diisocyanate or mixture thereof H 12 MDI
- 1,3- or 1,4-bis (isocyanatomethyl) cyclohexane or mixture thereof H 6 XDI
- bis (isocyanatomethyl) norbornane NBDI
- 1,3 -Cyclopentene diisocyanate 1,4-cyclohexane diisocyanate, 1,3-cyclohexane diisocyanate, methyl-2,4-cyclohexane diisocyanate, methyl-2,6-cyclohexane diisocyanate and the like. I can get lost.
- aliphatic polyisocyanate examples include hexamethylene diisocyanate (HDI), pentamethylene diisocyanate (PDI), tetramethylene diisocyanate, trimethylene diisocyanate, 1,2-, 2,3- or 1,3-butylene diisocyanate, 2, Aliphatic diisocyanates such as 4,4- or 2,2,4-trimethylhexamethylene diisocyanate.
- HDI hexamethylene diisocyanate
- PDI pentamethylene diisocyanate
- tetramethylene diisocyanate trimethylene diisocyanate
- 1,2-, 2,3- or 1,3-butylene diisocyanate 1,2-, 2,3- or 1,3-butylene diisocyanate
- Aliphatic diisocyanates such as 4,4- or 2,2,4-trimethylhexamethylene diisocyanate.
- the polyisocyanate may be a polyisocyanate derivative, for example, a multimer of the above-described polyisocyanate (for example, a dimer, a trimer (for example, isocyanurate-modified, iminooxadiazinedione-modified), or pentamer.
- a polyisocyanate derivative for example, a multimer of the above-described polyisocyanate (for example, a dimer, a trimer (for example, isocyanurate-modified, iminooxadiazinedione-modified), or pentamer.
- allophanate-modified products for example, allophanate-modified products produced from the reaction of the above-mentioned polyisocyanate and low molecular weight polyol
- polyol modified products for example, from the reaction of polyisocyanate and low molecular weight polyol) Produced polyol modified products (alcohol adducts, etc.)
- biuret modified products for example, biuret modified products produced by reaction of the above polyisocyanates with water and amines
- urea modified products for example, the above poly Produced by reaction of isocyanate and diamine Urea-modified products, etc.
- oxadiazine trione-modified products for example, oxadiazine trione produced by the reaction of the above-mentioned polyisocyanate and carbon dioxide gas
- carbodiimide-modified products generated by the decarboxylation condensation reaction of the above-mentioned polyisocyanate).
- polyisocyanates can be used alone or in combination of two or more, and from the viewpoint of barrier properties, preferably at least one selected from the group consisting of aromatic polyisocyanates, araliphatic polyisocyanates and alicyclic polyisocyanates.
- aromatic polyisocyanates preferably, XDI, H 6 XDI and the like.
- polystyrene resin examples include low molecular weight compounds having two or more hydroxyl groups and a molecular weight of 60 to 400.
- barrier properties for example, ethylene glycol, propanediol, 1,4-butylene glycol, 1,3-butylene.
- Glycol 1,2-butylene glycol, 1,6-hexanediol, neopentyl glycol, alkane (C7 to C22) diol, diethylene glycol, triethylene glycol, dipropylene glycol, cyclohexanedimethanol, alkane-1,2-diol ( C17 to C20), hydrogenated bisphenol A, 1,4-dihydroxy-2-butene, 2,6-dimethyl-1-octene-3,8-diol, bishydroxyethoxybenzene, xylene glycol, bishydroxyethylene terephthal Diols such as glycerol, such as glycerin, 2-methyl-2-hydroxymethyl-1,3-propanediol, 2,4-dihydroxy-3-hydroxymethylpentane, 1,2,6-hexanetriol, trimethylolpropane, Triols such as 2,2-bis (hydroxymethyl) -3-butanol and other aliphatic triols (
- polyols can be used singly or in combination of two or more kinds, preferably a polyol having 2 to 8 carbon atoms, more preferably a diol having 2 to 8 carbon atoms and a triol having 2 to 8 carbon atoms, Preferably, these diols and triols are used in combination.
- the barrier property may be lowered.
- the anionic group-containing polyol is a polyol having an anionic group such as a betaine structure-containing group such as a carboxyl group, a sulfonic acid group, a phosphoric acid group, or a sulfobetaine, and preferably a carboxyl group-containing polyol.
- carboxyl group-containing polyol examples include dihydroxyalkane-carboxylic acids having 2 to 10 carbon atoms such as dimethylolacetic acid, dimethylolpropionic acid, dimethylolbutanoic acid, and 2,2-dimethylolhexanoic acid, such as dioxymaleic acid.
- dihydroxyalkane-polycarboxylic acids having 2 to 10 carbon atoms such as dimethylolacetic acid, dimethylolpropionic acid, dimethylolbutanoic acid, and 2,2-dimethylolhexanoic acid, such as dioxymaleic acid.
- C 4-10 dihydroxyalkane-polycarboxylic acid or C4-10 dihydroxyalkene-polycarboxylic acid for example 2,6-dihydroxybenzoic acid, etc., dihydroxyarene-carboxylic acid Etc.
- anionic group-containing polyols can be used singly or in combination of two or more, and preferred examples thereof include dihydroxyalkane-carboxylic acids having 2 to 10 carbon atoms. More preferred is a dihydroxyalkane-carboxylic acid having 3 to 6 carbon atoms.
- a polyisocyanate and a polyol and an anionic group-containing polyol are used.
- the isocyanate group of the polyisocyanate is in excess relative to the total amount of hydroxyl groups of the polyol and the anionic group-containing polyol.
- the ratio of the isocyanate group to the hydroxyl group is more than 1, preferably 1.1 to 10, and solution polymerization, bulk polymerization, etc.
- the reaction is carried out by a known polymerization method.
- polyisocyanate, polyol and an anionic group-containing polyol are added to an organic solvent and reacted at a reaction temperature of 20 to 90 ° C. for about 1 to several hours.
- the organic solvent is a low-boiling solvent that is inactive with respect to the isocyanate group, is hydrophilic, and is easy to remove.
- esters such as ethyl acetate and butyl acetate, such as acetone and methyl ethyl ketone
- ketones for example, ethers such as tetrahydrofuran, and nitriles such as acetonitrile.
- a polyisocyanate is stirred under a nitrogen stream, and a polyol and an anionic group-containing polyol are added thereto and reacted at a reaction temperature of 60 to 90 ° C. for about 1 to several hours.
- solution polymerization that allows easier adjustment of reactivity and viscosity is preferably used.
- a known urethanization catalyst such as an amine-based, tin-based, or lead-based catalyst may be used as necessary, and an unreacted polyisocyanate is obtained from the resulting isocyanate group-terminated prepolymer.
- the monomer may be removed using a known removal means such as distillation or extraction.
- the blending ratio of the polyol and the anionic group-containing polyol is, for example, 3 to 500 parts by weight, preferably 10 to 120 parts by weight, based on 100 parts by weight of the anionic group-containing polyol.
- the anionic group-containing polyol is blended so that the anionic group is usually 10 to 200 milliequivalents, preferably 15 to 100 milliequivalents per 100 g of the aqueous resin. If the equivalent of the anionic group is within this range, good dispersibility can be ensured.
- the isocyanate group-terminated prepolymer thus obtained is a polyurethane prepolymer having a free isocyanate group at the molecular end, and the isocyanate group content thereof is, for example, 2 to 25% by mass, preferably 5 to 20%. % By mass.
- the average number of functional groups of the isocyanate group is, for example, 2 to 5, preferably 2 to 3.5.
- the obtained isocyanate group-terminated prepolymer is neutralized and dispersed in water, and then reacted with a chain extender, or the isocyanate group-terminated prepolymer is neutralized and then chain extender. After making it react, it is made to disperse in water.
- the obtained isocyanate group-terminated prepolymer is neutralized and dispersed in water, and then reacted with a chain extender.
- Examples of the neutralizing agent used for neutralization include tertiary amines such as trimethylamine, triethylamine, tri-n-propylamine, tributylamine, triethanolamine, dimethylethanolamine, and triisopropanolamine.
- Examples thereof include alkali metal hydroxides such as potassium, sodium hydroxide and lithium hydroxide, and ammonia.
- chain extender examples include polyamines having two or more amino groups.
- examples of such polyamines include ethylenediamine, 1,3-propanediamine, 1,4-butanediamine, 1,6-hexamethylenediamine, 1,4-cyclohexanediamine, and 3-aminomethyl-3,5,5.
- the polyamine may have a hydroxyl group, and as the polyamine having such a hydroxyl group, for example, 2-[(2′-aminoethyl) amino] ethanol (also known as 2-hydroxyethylamino) Ethylamine), 2-aminoethylaminopropanol, 2- (3′-aminopropyl) aminoethanol, amino (C2-6 alkylamino C2-3 alkyl alcohol) such as 3- (2′-hydroxyethyl) aminopropylamine, and the like. It is done.
- 2-[(2′-aminoethyl) amino] ethanol also known as 2-hydroxyethylamino) Ethylamine
- 2-aminoethylaminopropanol also known as 2-hydroxyethylaminopropanol
- 2- (3′-aminopropyl) aminoethanol amino (C2-6 alkylamino C2-3 alkyl alcohol) such as 3- (2′-hydroxyethyl) aminoprop
- a neutralizer to the resulting isocyanate group-terminated prepolymer so that the anionic group forms a salt.
- the addition ratio of the neutralizing agent is, for example, 0.4 to 1.2 equivalents, preferably 0.6 to 1.00 equivalents per equivalent of anionic group.
- the organic solvent is heated at an appropriate temperature, for example, under reduced pressure. And remove.
- the aqueous resin thus obtained is a water-dispersible (self-emulsifying) polyurethane resin having an anionic group in one molecular chain, and its acid value is, for example, 5 to 50 mgKOH / g, preferably Is 10-40 mg KOH / g.
- the acid value of the aqueous resin is in the above range, a stable aqueous form with good water dispersibility can be obtained, and an effective crosslinking reaction can be caused with good film forming property.
- the ratio of the aqueous resin to the aqueous dispersion that is, the solid content of the aqueous dispersion is, for example, 5 to 60% by mass, preferably 10 to 50% by mass.
- the solid content of the aqueous dispersion can be adjusted by the amount of water added.
- the average particle diameter of the aqueous resin in the aqueous dispersion is, for example, 20 to 400 nm, preferably 40 to 200 nm.
- this average particle diameter is an average particle diameter calculated
- the wettable inorganic layered compound is a clay mineral composed of extremely thin unit crystals and having a property that a solvent coordinates or absorbs / swells between unit crystal layers.
- wettable inorganic layered compounds include hydrous silicates (such as phyllosilicate minerals), such as kaolinite group clay minerals (such as halloysite, kaolinite, enderite, dickite, and nacrite), antigolite group clay minerals (anti Golite, chrysotile, etc.), smectite group clay minerals (montmorillonite, beidellite, nontronite, saponite, hectorite, soconite, stevensite, etc.), vermiculite group clay minerals (such as vermiculite), mica or mica group clay minerals (white mica, Mica such as phlogopite, margarite, tetrasilic mica, teniolite, etc.) and synthetic mica.
- hydrous silicates such as
- the average particle size (laser diffractometer) of the wettable inorganic layered compound is usually 15 ⁇ m or less, for example, 50 nm to 15 ⁇ m, preferably 100 nm to 15 ⁇ m.
- the aspect ratio of the wettable inorganic layered compound is, for example, 50 to 5000, preferably 100 to 3000, and more preferably 200 to 2500.
- These wettable inorganic layered compounds may be natural clay minerals or synthetic clay minerals. Moreover, it can use individually or in combination of 2 or more types, Preferably, a smectite group clay mineral (montmorillonite etc.), a mica group clay mineral (water swellable mica etc.), synthetic mica etc. are mentioned.
- the mixing ratio of the wettable inorganic layered compound is, for example, 0.1 to 200 parts by weight, preferably 1 to 150 parts by weight with respect to 100 parts by weight of the aqueous resin (solid content of the aqueous dispersion).
- the amount is, for example, 0.1 to 150 parts by mass, preferably 1 to 100 parts by mass with respect to 100 parts by mass of the solid content of the agent.
- water-dispersible polyisocyanate curing agent examples include those obtained by dispersing polyisocyanate with an external emulsifier and those containing a hydrophilic group in a part of the polyisocyanate.
- a part of the polyisocyanate is hydrophilic.
- the thing containing a sex group is mentioned.
- examples of the polyisocyanate include polyisocyanates having two or more isocyanate groups. Specifically, for example, triisocyanate compounds and, for example, the above-described polyisocyanate derivatives (3 And / or allophanate modified products).
- Such polyisocyanates preferably include aliphatic polyisocyanates, alicyclic polyisocyanates, and derivatives thereof, or mixtures thereof.
- the polyisocyanate is preferably a combination of an aliphatic polyisocyanate and / or a derivative thereof and an alicyclic polyisocyanate and / or a derivative thereof.
- the content ratio thereof is 100 parts by mass of the alicyclic polyisocyanate and / or derivative thereof.
- the aliphatic polyisocyanate and / or its derivative is, for example, 50 parts by mass or more, preferably 150 parts by mass or more, more preferably 250 parts by mass or more, for example, 600 parts by mass or less, preferably 500 parts by mass. Part or less, more preferably 400 parts by weight or less.
- the laminate strength and barrier properties of the laminate can be improved.
- hydrophilic groups examples include anionic groups (such as carboxylic acid groups and sulfonic acid groups) and nonionic groups (polyoxyethylene glycol groups), preferably nonionic groups.
- non-ionic group containing a part of the polyisocyanate specifically, for example, a compound having two or more isocyanate groups at the molecular end and having a polyoxyethylene chain (hereinafter referred to as polyoxyethylene chain-containing polyoxyethylene). Referred to as isocyanate).
- the polyoxyethylene chain-containing polyisocyanate is, for example, a polyisocyanate having two or more isocyanate groups and a single-end blocked polyoxyethylene glycol (alkoxyethylene glycol having one end blocked with a C1-20 alkyl group), It can be obtained by urethanating the isocyanate group of the polyisocyanate with respect to the hydroxyl group of the one-end blocked polyoxyethylene glycol in an excess ratio and removing the unreacted polyisocyanate if necessary.
- methoxy polyethylene glycol or the like is preferably used as the one-end blocked polyoxyethylene glycol.
- the polyoxyethylene group is contained in an amount of, for example, 5% by mass or more, preferably 8 to 30% by mass, and the number average molecular weight of the polyoxyethylene group is, for example, 200 to 6000. Preferably, it is 300 to 3000, and more preferably 400 to 2500.
- the water dispersibility of the water dispersible polyisocyanate curing agent may be lowered, whereas the upper limit is exceeded. However, the water dispersibility of the water dispersible polyisocyanate curing agent may still be lowered.
- each of the polyisocyanates used in combination may contain a hydrophilic group and then may be mixed, or after each polyisocyanate is mixed, A group may be included.
- each polyisocyanate used together are allowed to contain a hydrophilic group to obtain a mixture containing a hydrophilic group, while separately preparing a polyisocyanate containing a hydrophilic group, Further, they can be mixed.
- the mixing ratio of such a water-dispersible polyisocyanate curing agent is, for example, 10 to 100 parts by mass, preferably 15 to 70 parts by mass with respect to 100 parts by mass of the aqueous resin (solid content of the aqueous dispersion). Further, for example, 80 to 500, preferably 100 to 500 parts by mass, and more preferably 100 to 400 parts by mass with respect to 100 parts by mass of the wettable inorganic layered compound.
- the blending ratio of the water-dispersible polyisocyanate curing agent is within the above range, excellent barrier properties can be ensured.
- a laminating adhesive for example, a wettable inorganic layered compound and a water-dispersible polyisocyanate curing agent are blended in an aqueous dispersion of an aqueous resin in the above-described proportions, for example, uniformly in water. It can be prepared by stirring and dispersing.
- the laminate adhesive can contain various additives as required within the range not impairing the barrier property.
- additives include silane coupling agents, stabilizers (antioxidants, heat stabilizers, ultraviolet absorbers, etc.), plasticizers, antistatic agents, lubricants, antiblocking agents, colorants, fillers, crystal nucleating agents. Etc.
- the laminating adhesive can be further adjusted to a solid content of, for example, 0.5 to 30% by mass, preferably 1 to 25% by mass, by appropriately adding water.
- the wettable inorganic layered compound may be agglomerated in the aqueous dispersion, it is preferable to disperse or mix the wettable inorganic layered compound in a solvent and then perform mechanical forced dispersion in which shearing force acts.
- the dispersion is carried out using a treatment, for example, a dispersion treatment using a homomixer, a colloid mill, a jet mill, a kneader, a sand mill, a ball mill, a bead mill, a three roll, an ultrasonic dispersion device or the like.
- a treatment for example, a dispersion treatment using a homomixer, a colloid mill, a jet mill, a kneader, a sand mill, a ball mill, a bead mill, a three roll, an ultrasonic dispersion device or the like.
- Such an adhesive for lamination is prepared from an aqueous resin obtained by reacting an isocyanate group-terminated prepolymer having an anionic group and a chain extender, a wettable inorganic layered compound, and a water-dispersible polyisocyanate curing agent. Therefore, it has excellent barrier properties (gas barrier properties against oxygen, water vapor, etc.).
- a laminate (composite film) having excellent barrier properties can be obtained by applying the laminating adhesive thus obtained to one or both sides of the base film.
- the base film examples include polyolefin resins (for example, polyethylene, polypropylene, propylene-ethylene copolymer), polyester resins (for example, polyethylene terephthalate), polyamide resins (for example, nylon 6, nylon 66, and the like). ), Vinyl resins (for example, polyvinyl alcohol, ethylene-vinyl alcohol copolymer, etc.), and resin films made of thermoplastic resins such as cellophane.
- a polyolefin resin film, a polyester resin film, and a polyamide resin film are used.
- the base film may be a single layer film or a laminated film of resin films. Moreover, the laminated base film of a resin film and another base film (metal, such as aluminum, paper etc.) may be sufficient.
- the resin film may be an unstretched film, may be a uniaxial or biaxially oriented film, or may be a resin film that has been subjected to surface treatment (such as corona discharge treatment) or an anchor coat or undercoat treatment. Good. Furthermore, the vapor deposition resin film by which metal oxides, such as metals, such as aluminum, and a silica and an alumina, were vapor-deposited may be sufficient.
- the base film is preferably a transparent film (specifically, a resin film containing no metal or metal oxide). If a transparent film is used, when the resulting composite film is used as a packaging material, the contents to be packaged can be seen from the outside.
- the thickness of the base film is, for example, 3 to 200 ⁇ m, preferably 5 to 120 ⁇ m, and more preferably 10 to 100 ⁇ m.
- the laminating adhesive there are no particular restrictions on the application of the laminating adhesive to the base film, and examples include known gravure coating methods, reverse coating methods, roll coating methods, bar coating methods, spray coating methods, air knife coating methods, dipping methods, and the like. These coating methods can be used, and the coating can be carried out by appropriately combining them.
- the film After applying the laminating adhesive to the base film, the film can be formed by drying and then curing to form a film.
- the thickness of the coating film made of the laminating adhesive after film formation is, for example, about 0.1 to 15 ⁇ m, preferably about 0.2 to 10 ⁇ m, and more preferably about 0.5 to 5 ⁇ m.
- the coating film can be formed by, for example, heat drying at 50 to 200 ° C., preferably 80 to 150 ° C.
- the coating film can be cured at, for example, 25 to 80 ° C., preferably 35 Heat cure at -60 ° C for 24 hours to 7 days.
- the laminate (composite film) thus obtained has excellent gas barrier properties against oxygen, water vapor and the like, and is effectively used in various fields.
- Synthesis Example 1 (Synthesis of aqueous resin A) 90.4 g of acetonitrile, 95.4 g of 1,3-bis (isocyanatomethyl) cyclohexane (H 6 XDI), 61.7 g of 1,3-xylylene diisocyanate (XDI), 27.2 g of ethylene glycol, 1.6 g of glycerin And 14.4 g of dimethylolpropionic acid were mixed and reacted at 70 ° C. for 4 hours in a nitrogen atmosphere to synthesize a carboxyl group-containing isocyanate group-terminated prepolymer. After reaching the predetermined isocyanate group content, the solution was cooled to 40 ° C., and 10.6 g of triethylamine was added to neutralize the carboxyl group.
- the obtained isocyanate group-terminated prepolymer was dispersed in 750 g of water with a homodisper, and 27.6 g of 2-hydroxyethylaminoethylamine was added to cause a chain extension reaction. Then, acetonitrile was distilled off to obtain a solid content of 25 By adjusting to mass%, an aqueous dispersion of an aqueous resin was obtained. The average particle diameter of this aqueous resin was 90 nm, and the acid value was 22.9 mgKOH / g.
- Synthesis Example 2 (Synthesis of aqueous resin B) 97.5 g of acetonitrile, 49.7 g of 1,3-bis (isocyanatomethyl) cyclohexane (H 6 XDI), 32.1 g of 1,3-xylylene diisocyanate (XDI), UH-200 (manufactured by Ube Industries, polycarbonate diol) , Molecular weight 2000) 105.3 g, neopentylcricol 11.0 g and dimethylolpropionic acid 16.9 g were mixed and reacted at 70 ° C. for 4 hours in a nitrogen atmosphere to obtain a carboxyl group-containing isocyanate group-terminated prepolymer. Synthesized. After reaching the predetermined isocyanate group content, the solution was cooled to 40 ° C., and 12.5 g of triethylamine was added to neutralize the carboxyl group.
- the obtained isocyanate group-terminated prepolymer was dispersed in 760 g of water with a homodisper, and 13.8 g of 2-hydroxyethylaminoethylamine was added to cause chain extension reaction, and then acetonitrile was distilled off to obtain a solid content of 30
- an aqueous dispersion of an aqueous resin was obtained.
- This aqueous resin had an average particle size of 80 nm and an acid value of 29.4 mgKOH / g.
- Synthesis Example 4 (Synthesis of water-dispersible polyisocyanate D) Takenate D-127N (Mitsui Chemicals Co., Ltd., 1,3-bis (isocyanatomethyl) cyclohexane modified product, ethyl acetate solution having a solid concentration of 75% by mass) 257.6 g Takenate D-177N (Mitsui Chemicals Co., Hexa 193.2 g of methylene diisocyanate modified product) and 63.6 g of methoxypolyethylene glycol (MeO-PEG400, manufactured by Toho Chemical Co., Ltd.) were mixed and reacted at 75 ° C. for 8 hours, after which ethyl acetate was removed under reduced pressure to disperse in water. Polyisocyanate D was obtained. The NCO% of this water-dispersible polyisocyanate was 14.7%.
- Synthesis Example 5 (Synthesis of water-dispersible polyisocyanate E) Water-dispersible polyisocyanate C and water-dispersible polyisocyanate D were mixed at a mass ratio of 1: 1 to obtain water-dispersible polyisocyanate E. The NCO% of this water-dispersible polyisocyanate was 16.4%.
- Examples 1 to 11, 23 to 27 and Comparative Examples 1 to 6 Aqueous resins A and B, water dispersible polyisocyanates C, D and E, carbodiimide curing agent (Nisshinbo Co., Ltd., trade name Carbodilite SV-02, solid content 40 parts by mass), epoxy curing agent (manufactured by Nagase ChemteX Corporation, commercial product) Name Denacol EX-810, solid content 100 parts by mass), synthetic mica (swellable inorganic layered compound, manufactured by Topy Industries, trade name NTS-5, solid content concentration 6% by mass, average particle size 12 ⁇ m), Table 1 and By mixing with the formulation shown in Table 2 and adjusting the solid content concentration to 20% by mass by adding water, an adhesive for laminating was obtained.
- Examples 12-22, 28-32 and Comparative Examples 8-12 On the corona-treated surface of a biaxially stretched polypropylene film (OPP film, manufactured by Toyobo Co., Ltd., Pyrene P-2161, thickness 20 microns), the adhesive amount for laminating of each example and each comparative example was about After coating with an applicator to 3.0 g / m 2 and evaporating the water, it was immediately bonded to an unstretched polypropylene film (CPP film, Toyobo, Pyrene P-1128, thickness 20 microns). C. for 2 days to obtain a composite film (laminate).
- OPP film manufactured by Toyobo Co., Ltd., Pyrene P-2161, thickness 20 microns
- Comparative Example 13 Instead of the laminating adhesive of each example and each comparative example, a polyurethane adhesive polyurethane adhesive mixture (Takelac A-969V / Takenate A-5 (both manufactured by Mitsui Chemicals)) was used at a mass ratio of 3/1. A composite film (laminate) was obtained in the same manner as in Examples 12 to 22, 28 to 32, and Comparative Examples 8 to 12, except that an adhesive mixture which was blended and appropriately diluted with ethyl acetate was used.
- a polyurethane adhesive polyurethane adhesive mixture Takelac A-969V / Takenate A-5 (both manufactured by Mitsui Chemicals)
- Comparative Examples 14 and 15 On the corona-treated surface of a biaxially stretched polypropylene film (OPP film, manufactured by Toyobo Co., Ltd., Pyrene P-2161, thickness 20 microns), the adhesive amount for laminating of Example 1 and Comparative Example 6 was about After applying with an applicator so as to be 1.0 g / m 2 and evaporating water, it was cured at 40 ° C. for 2 days.
- OPP film manufactured by Toyobo Co., Ltd., Pyrene P-2161, thickness 20 microns
- a polyurethane adhesive mixture (Takelac A-969V / Takenate A-5 (both manufactured by Mitsui Chemicals) was blended at a mass ratio of 3/1 on the adhesive-coated surface of the film after curing.
- a suitably diluted adhesive mixture was applied so that the coating amount after solvent drying was about 2.5 g / m 2 . Thereafter, the solvent was dried, bonded to an unstretched polypropylene film (CPP film, manufactured by Toyobo, Pyrene P-1128, thickness 20 microns), and cured at 40 ° C. for 2 days.
- CPP film unstretched polypropylene film
- the laminate adhesive of the present invention is used for producing a laminate such as a composite film.
- the laminate of the present invention can be used as a packaging material in various industrial fields.
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Abstract
Description
アセトニトリル90.4gに、1,3-ビス(イソシアナトメチル)シクロヘキサン(H6XDI)95.4g、1,3-キシリレンジイソシアネート(XDI)61.7g、エチレングリコール27.2g、グリセリン1.6gおよびジメチロールプロピオン酸14.4gを混合し、窒素雰囲気下、70℃で4時間反応させることにより、カルボキシル基含有イソシアネート基末端プレポリマーを合成した。所定のイソシアネート基含量になった後、40℃まで冷却し、トリエチルアミン10.6gを添加してカルボキシル基を中和した。
合成例2(水性樹脂Bの合成)
アセトニトリル97.5gに、1,3-ビス(イソシアナトメチル)シクロヘキサン(H6XDI)49.7g、1,3-キシリレンジイソシアネート(XDI)32.1g、UH-200(宇部興産製、ポリカーボネートジオール、分子量2000)105.3g、ネオペンチルクリコール11.0gおよびジメチロールプロピオン酸16.9gを混合し、窒素雰囲気下、70℃で4時間反応させることにより、カルボキシル基含有イソシアネート基末端プレポリマーを合成した。所定のイソシアネート基含量になった後、40℃まで冷却し、トリエチルアミン12.5gを添加してカルボキシル基を中和した。
タケネートD-170HN(三井化学社製、ヘキサメチレンジイソシアネート変性体)406.1gに、メトキシポリエチレングリコール(東邦化学社製、MeO-PEG400)62.2gを混合し、75℃で8時間反応させ、水分散性ポリイソシアネートCを得た。この水分散性ポリイソシアネートのNCO%は18.0%であった。
タケネートD-127N(三井化学社製、1,3-ビス(イソシアナトメチル)シクロヘキサン変性体、固形分濃度75質量%の酢酸エチル溶液)257.6g、タケネートD-177N(三井化学社製、ヘキサメチレンジイソシアネート変性体)193.2g、メトキシポリエチレングリコール(東邦化学社製、MeO-PEG400)63.6gを混合し、75℃で8時間反応させ、その後酢酸エチルを減圧下で除去し、水分散性ポリイソシアネートDを得た。この水分散性ポリイソシアネートのNCO%は14.7%であった。
水分散性ポリイソシアネートCと水分散性ポリイソシアネートDとを、質量比1:1の割合で混合し、水分散性ポリイソシアネートEとした。この水分散性ポリイソシアネートのNCO%は、16.4%であった。
水性樹脂AおよびB、水分散性ポリイソシアネートC、DおよびE、カルボジイミド硬化剤(日清紡社製、商品名カルボジライトSV-02、固形分40質量部)、エポキシ硬化剤(ナガセケムテックス社製、商品名デナコールEX-810、固形分100質量部)、合成マイカ(膨潤性無機層状化合物、トピー工業社製、商品名NTS-5、固形分濃度6質量%、平均粒径12μm)を、表1および表2に示す配合処方で混合し、水を加えて固形分濃度20質量%に調整することにより、ラミネート用接着剤を得た。
二軸延伸ポリプロピレンフィルム(OPPフィルム、東洋紡社製、パイレンP-2161,厚み20ミクロン)のコロナ処理面に、各実施例および各比較例のラミネート用接着剤を、水乾燥後の塗布量が約3.0g/m2となるようにアプリケーターで塗工し、水を蒸発させた後、直ちに未延伸ポリプロピレンフィルム(CPPフィルム、東洋紡社製、パイレンP-1128,厚み20ミクロン)と貼り合わせ、40℃×2日間養生し、複合フィルム(積層体)を得た。
各実施例および各比較例のラミネート用接着剤に代えて、ポリウレタン系接着剤ポリウレタン系接着剤混合物(タケラックA-969V/タケネートA-5(いずれも三井化学社製)を質量比3/1で配合し、酢酸エチルで適宜希釈した接着剤混合物)を用いた以外は、実施例12~22、28~32および比較例8~12と同様にして、複合フィルム(積層体)を得た。
二軸延伸ポリプロピレンフィルム(OPPフィルム、東洋紡社製、パイレンP-2161,厚み20ミクロン)のコロナ処理面に、実施例1および比較例6のラミネート用接着剤を、水乾燥後の塗布量が約1.0g/m2となるようにアプリケーターで塗工し、水を蒸発させた後、40℃で2日間養生した。
(評価)
<接着強度試験>
試験片幅25mmの複合フィルムにおける二軸延伸ポリプロピレンフィルム/未延伸ポリプロピレンフィルム間の接着強度(N/25mm幅)を、25℃環境下、引張速度300mm/min、T型剥離試験により測定した。その結果を、表1および表2に示す。
<ガスバリア性試験>
複合フィルムの酸素透過度(mL/m2・atm・Day)を、酸素透過度測定装置(OXTRAN2/20、MOCON社製)を用いて、温度20℃、相対湿度80%の雰囲気下で測定した。その結果を表1および表2に示す。
Claims (6)
- アニオン性基を有するイソシアネート基末端プレポリマーおよび鎖伸長剤を反応させて得られる水性樹脂と、
湿潤性無機層状化合物と、
水分散性ポリイソシアネート硬化剤と
から調製されることを特徴とする、ラミネート用接着剤。 - 前記水分散性ポリイソシアネート硬化剤が、前記湿潤性無機層状化合物100質量部に対して、100~500質量部の割合で配合されることを特徴とする、請求項1に記載のラミネート用接着剤。
- 前記イソシアネート基末端プレポリマーは、
芳香族ポリイソシアネート、芳香脂肪族ポリイソシアネートおよび脂環族ポリイソシアネートからなる群から選択される少なくとも1種のポリイソシアネートと、
炭素数2~8のポリオールと、
炭素数3~6のアニオン性基含有ポリオールと
を反応させることにより得られることを特徴とする、請求項1に記載のラミネート用接着剤。 - 前記水分散性ポリイソシアネート硬化剤が、脂肪族ポリイソシアネートおよび/または脂環族ポリイソシアネートを含有することを特徴とする、請求項1に記載のラミネート用接着剤。
- 前記水分散性ポリイソシアネート硬化剤が、脂肪族ポリイソシアネートおよび脂環族ポリイソシアネートを含有することを特徴とする、請求項1に記載のラミネート用接着剤。
- アニオン性基を有するイソシアネート基末端プレポリマーおよび鎖伸長剤を反応させて得られる水性樹脂と、
湿潤性無機層状化合物と、
水分散性ポリイソシアネート硬化剤と
から調製されるラミネート用接着剤を用いて得られることを特徴とする、積層体。
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ES13746806.2T ES2638966T3 (es) | 2012-02-10 | 2013-01-18 | Agente adhesivo para laminado y laminado |
EP13746806.2A EP2813557B1 (en) | 2012-02-10 | 2013-01-18 | Adhesive agent for laminate, and laminate |
JP2013557453A JP5828914B2 (ja) | 2012-02-10 | 2013-01-18 | ラミネート用接着剤および積層体 |
US14/376,256 US9328273B2 (en) | 2012-02-10 | 2013-01-18 | Laminating adhesive and laminate |
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JP2016204592A (ja) * | 2015-04-28 | 2016-12-08 | 大日精化工業株式会社 | ポリヒドロキシウレタン水分散体組成物、及び該水分散体組成物を用いてなるガスバリア性水性コーティング剤、ガスバリア性フィルム |
JP2019156972A (ja) * | 2018-03-13 | 2019-09-19 | 三井化学株式会社 | ポリウレタンディスパージョンおよびポリウレタン積層体 |
WO2020071269A1 (ja) * | 2018-10-01 | 2020-04-09 | 三井化学株式会社 | 積層体および積層体の製造方法 |
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JP5828914B2 (ja) | 2015-12-09 |
US20150005430A1 (en) | 2015-01-01 |
US9328273B2 (en) | 2016-05-03 |
EP2813557A1 (en) | 2014-12-17 |
EP2813557A4 (en) | 2015-09-30 |
JPWO2013118562A1 (ja) | 2015-05-11 |
EP2813557B1 (en) | 2017-06-07 |
ES2638966T3 (es) | 2017-10-24 |
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