WO2006104257A1 - ガスバリア材及びその製造方法 - Google Patents
ガスバリア材及びその製造方法Info
- Publication number
- WO2006104257A1 WO2006104257A1 PCT/JP2006/307279 JP2006307279W WO2006104257A1 WO 2006104257 A1 WO2006104257 A1 WO 2006104257A1 JP 2006307279 W JP2006307279 W JP 2006307279W WO 2006104257 A1 WO2006104257 A1 WO 2006104257A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas barrier
- carboxyl group
- barrier material
- resin
- acid
- Prior art date
Links
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- UMWUESWLHCAWKP-UHFFFAOYSA-N 2-[4-(4,4-dimethyl-5h-1,3-oxazol-2-yl)butyl]-4,4-dimethyl-5h-1,3-oxazole Chemical compound CC1(C)COC(CCCCC=2OCC(C)(C)N=2)=N1 UMWUESWLHCAWKP-UHFFFAOYSA-N 0.000 description 1
- GATDZUUWVARTOQ-UHFFFAOYSA-N 2-[4-(4,4-dimethyl-5h-1,3-oxazol-2-yl)phenyl]-4,4-dimethyl-5h-1,3-oxazole Chemical compound CC1(C)COC(C=2C=CC(=CC=2)C=2OCC(C)(C)N=2)=N1 GATDZUUWVARTOQ-UHFFFAOYSA-N 0.000 description 1
- GZQKJQLFIGBEIE-UHFFFAOYSA-N 2-[4-(4,5-dihydro-1,3-oxazol-2-yl)butyl]-4,5-dihydro-1,3-oxazole Chemical compound N=1CCOC=1CCCCC1=NCCO1 GZQKJQLFIGBEIE-UHFFFAOYSA-N 0.000 description 1
- VRRKNSMODVXFPP-UHFFFAOYSA-N 2-[4-(5,6-dihydro-4h-1,3-oxazin-2-yl)butyl]-5,6-dihydro-4h-1,3-oxazine Chemical compound N=1CCCOC=1CCCCC1=NCCCO1 VRRKNSMODVXFPP-UHFFFAOYSA-N 0.000 description 1
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- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
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Classifications
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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
-
- 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
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31667—Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31739—Nylon type
- Y10T428/31743—Next to addition polymer from unsaturated monomer[s]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/3175—Next to addition polymer from unsaturated monomer[s]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
- Y10T428/31797—Next to addition polymer from unsaturated monomers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
Definitions
- the present invention relates to a gas barrier material, and more particularly, a gas barrier material having excellent gas barrier properties and water resistance, and capable of maintaining excellent gas barrier properties even after being placed under high-temperature wet heat conditions such as retort treatment.
- a gas barrier material having excellent gas barrier properties and water resistance, and capable of maintaining excellent gas barrier properties even after being placed under high-temperature wet heat conditions such as retort treatment.
- gas barrier resins Conventionally, various types of gas barrier resins have been used, and in particular, polyvinylidene chloride, polyacrylonitrile, ethylene vinyl alcohol copolymer and the like are known as gas barrier resins.
- polyvinylidene chloride polyacrylonitrile tends to refrain from its use due to environmental problems.
- Ethylene vinyl alcohol copolymer has a high gas barrier humidity dependency, and the gas barrier property decreases under high humidity conditions. There was a problem to do.
- films in which an inorganic substance is vapor-deposited on the surface of a base material are also known, but these films are very expensive, and the vapor-deposited film is a flexible base material. Or, it has a problem of poor adhesion to other resin layers.
- a gas / J film in which a film comprising an aqueous polymer A, a water-soluble or water-dispersible polymer B, and an inorganic layered compound is formed on a substrate
- a gas barrier film formed by coating a layer containing a metal compound on the surface of a molding layer made of a mixture of a poly (meth) acrylic acid polymer and a polyalcohol
- the gas barrier film described in JP-A No. 2000-931 requires high-temperature and long-time heat treatment for curing the coating film, and the gas barrier property described in JP-A No. 2004-115776. Even in the case of coatings, it is necessary to perform heat treatment at a high temperature when the coating film is cured in a short time, and these gas barrier materials have a great influence on the plastic substrate and have problems in productivity.
- the gas barrier materials described in Japanese Patent Application Laid-Open No. 2000-931 and Japanese Patent Application Laid-Open No. 2004-115776 improve gas barrier properties by utilizing ionic crosslinking with metal.
- a layer containing a metal compound is applied.
- the amount of metal contained is elementally analyzed by EDX (energy dispersive X-ray spectroscopy)
- EDX energy dispersive X-ray spectroscopy
- the abundance of metal elements is known, the amount of metal elements actually ion-bridged is unknown.
- Japanese Patent Application Laid-Open No. 2004-115776 only the amount charged with a metal compound is described, and the amount of metal element that is actually ionically crosslinked is still unknown.
- no ionic crosslinking amount necessary for imparting gas barrier properties under high humidity conditions and a gas barrier material having the crosslinking amount have been found.
- the object of the present invention is excellent in gas barrier properties, retort resistance, and flexibility, particularly under high humidity conditions, without causing the above-mentioned problems, and the coating film can be cured at a low temperature in a short time. It is to provide a gas barrier material with excellent productivity.
- a carboxyl group corresponding to an amount of at least an acid value of 330 mg KOHZg of a resin having a carboxyl group corresponding to an amount of acid value of 58 Omg KOH / g or more is ionically crosslinked.
- a gas barrier material is provided.
- a carboxyl group in the resin is cross-linked by a polyvalent metal ion;
- the resin comprises a copolymer containing, as essential components, a carboxyl group-containing vinyl monomer (A) and a vinyl monomer (B) having a functional group capable of reacting with each other or with a carboxyl group.
- the functional group in the vinyl monomer (B) reacts with each other or with a carboxyl group to form a crosslinked structure
- the vinyl monomer (B) has an aldehyde group or a glycidyl group
- At least one of the ring structures (d) contained in the compound (D) is an oxazoline group or a derivative thereof,
- the compound (D) is 2, 2′-bis (2-oxazoline).
- a gas barrier precursor made of a resin having a carboxyl group corresponding to an acid value of 58 Omg KOHZg or more is used, and a polyvalent metal compound is converted to 90 to 200 Ommo I / L in terms of metal atoms.
- the treatment is an immersion treatment of a gas barrier precursor in water containing a polyvalent metal.
- a packaging material comprising a layer made of the gas barrier material provided on the surface of a plastic substrate or between plastic layers.
- the gas barrier material of the present invention has excellent gas barrier properties under high humidity conditions, and the oxygen transmission rate is 20 cc / m under high humidity conditions of a relative humidity of 80%. Excellent gas barrier properties of 2 days / atm or less are possible. Further, according to the present invention, the amount of ionic crosslinking necessary to impart gas barrier properties under high humidity conditions is clear, and it is possible to reliably impart excellent gas barrier properties under high humidity conditions to gas barrier materials. Become.
- a vinyl monomer (A) containing a carboxyl group and a vinyl monomer (B) having a functional group capable of reacting with each other or with a force oxyl group An ether bond is formed in the carbon that forms a double bond between the nitrogen-containing gas barrier resin or the carboxyl group-containing polymer (C) consisting of a copolymer as an essential component, and oxygen in the ether bond.
- An important feature of the gas spear material of the present invention is that a carboxyl group corresponding to an amount of at least an acid value of 33 Omg KOH g of a resin having a carboxyl group corresponding to an amount of an acid value of 58 Omg KOHZg or more is ionically crosslinked. This makes it possible to exhibit excellent gas barrier properties even under high humidity conditions.
- a resin having a carboxyl group corresponding to an acid value of 58 OmgKOHZg or more has an excellent gas barrier property under low humidity conditions, but has an unreacted free carboxyl group in the resin. Therefore, there is a problem that the gas leakage property is lowered under high humidity conditions.
- the acid value of the resin containing carboxyl groups and the amount of carboxyl groups to be ionically crosslinked are related to the gas barrier properties under high humidity conditions. This has a critical significance, and this is clear from the results of the examples described later.
- the resin contains a carboxyl group equivalent to an acid value of 58 Omg KOHZg or more
- the oxygen permeation amount is large as shown in Table 1 under high humidity conditions (80% RH), making it a gas-pariatable.
- the gas barrier material of the present invention in which the carboxyl group corresponding to an amount of 33 Omg KOHZg or more is ion-crosslinked has a remarkable oxygen permeability under high humidity conditions (80% RH) before and after ion crosslinking. It is clear that the gas barrier properties under high humidity conditions are remarkably improved (Examples 1 to 18).
- a gas barrier precursor comprising a resin having a carboxyl group corresponding to an amount of 58 Omg KOHZg or more.
- FIG. 1 is a view showing a cross-sectional structure of the gas barrier material prepared in Example 1.
- FIG. 1 is a view showing a cross-sectional structure of the gas barrier material prepared in Example 1.
- FIG. 2 is a view showing the cross-sectional structure of the laminate produced in Example 17.
- FIG. 3 is a view showing a cross-sectional structure of a gas barrier material having an anchor layer prepared in Example 12.
- the gas barrier performance is determined by the combination of the acid value of the resin used and the acid value involved in ionic crosslinking. Therefore, it is important that the resin used in the present invention has a carboxyl group corresponding to an acid value of 58 Omg KOHZg or more, and among them, a carboxyl group corresponding to at least 33 Omg KOHZg or more is ionically crosslinked. It is.
- the acid value of the resin is 65 Omg KOH / g or more, of which at least 40 Omg KOHZg or more Carboxyl group Is preferably ionically crosslinked.
- the acid value of the resin is 650 to 95 Omg KOHZg, and that a carboxyl group corresponding to at least 50 Omg KOHZg is ion-crosslinked.
- the resin has a force lpoxyl group corresponding to an acid value of 58 Omg KOHZg or more, at least a carboxyl group force equivalent to the amount of 33 Omg KOH Zg ⁇ ionically crosslinked.
- a resin containing a carboxyl group corresponding to an acid value of 58 Omg KOHZg or more is preferable.
- the functional groups of the compounds react with each other or with a carboxyl group to form a crosslinked structure, or
- An ether bond is formed in the carbon that forms a double bond between the carboxyl group-containing polymer (C) and nitrogen, and contains two ring structures (d) containing oxygen in the ether bond.
- a crosslinked structure can be formed by the reaction of the carboxyl group of the carboxyl group-containing polymer (C) with the ring structure (d) of the compound (D),
- the copolymer is composed of a highly hydrogen-bonding copolymer having a high degree of hydrogen bond, it is possible to develop a good gas barrier property.
- the functional group rich in reactivity derived from the vinyl monomer (B) is liberated in the copolymer.
- gas barrier properties that can withstand high humidity conditions are provided.
- the above polymer (C) is a high hydrogen bonding polymer having a high degree of hydrogen bonding. Therefore, it is possible to express a good gas barrier property.
- Above polymer (C) is a high hydrogen bonding polymer having a high degree of hydrogen bonding. Therefore, it is possible to express a good gas barrier property.
- the reaction between the carboxyl group of (C) and the ring structure (d) of the above compound (D) allows the polymer (C) to have a high hydrogen bonding property without interfering with the polymer chain of the above polymer (C). It is possible to form a cross-linked structure, and the formed cross-linked site is also composed of an amide ester bond, which is an effective structure for gas barrier properties, so that it has gas barrier properties that can withstand some high humidity conditions. ing.
- the remaining unreacted free carboxyl group of the gas barrier resin in which such a crosslinked structure by a covalent bond is formed is ionically crosslinked, thereby improving water resistance and further excellent high humidity conditions. It is possible to remarkably improve the gas barrier property below, and to exhibit excellent retort resistance.
- carboxyl group-containing vinyl monomer (A) examples include, but are not limited to, mono- or dicarboxylic acid monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride, kutonic acid, and fumaric acid. Can be mentioned.
- the vinyl monomer (B) having a functional group capable of reacting with each other or with a carboxyl group is preferably one having a reactive functional group such as an aldehyde group or a glycidyl group, but is not limited thereto.
- Acrolein acrylic aldehyde
- methacrolein methacrylaldehyde
- glycidyl acrylate glycidyl methacrylate and the like can be suitably used.
- a copolymer of the vinyl monomer (A) and the vinyl monomer (B) constituting the gas barrier resin that can be suitably used in the present invention is a vinyl polymer (A) and a vinyl monomer (B) in the copolymer.
- At least 30% or more of the functional groups derived from the vinyl monomer (B) in the copolymer are free functional groups derived from the vinyl monomer (B) to be a cross-linking point between the copolymers.
- it is preferably present at a rate of 50 to 100%.
- the method for polymerizing the gas barrier resin is not particularly limited, but is preferably polymerized by radical polymerization, and the polymerization mode is preferably solution polymerization, and a non-aqueous solvent is particularly preferably used as the polymerization solvent. .
- the copolymer has a free functional group that becomes a cross-linking point, for example, an aldehyde group.
- the free aldehyde group in the copolymer hydrates with water and the crosslinking point is reduced, so that the gas barrier property is inferior. become.
- the polymerization solvent examples include methyl alcohol, ethyl alcohol, isopropyl alcohol, acetone, tetrahydrofuran, N, N-dimethylformamide, ethyl acetate, toluene and the like.
- alcohol and cyclic ether are used.
- a mixed solvent, particularly a mixed solvent of isopropyl alcohol and tetrahydrofuran can be preferably used.
- the mixing ratio of the alcohol and the cyclic ether in the mixed solvent is preferably in the range of 3:97 to 20:80, particularly 5:95 to 10:90 in terms of weight ratio. If the amount of alcohol is less than the above range, the polymerization efficiency is poor. On the other hand, if the amount of alcohol is more than the above range, the retort resistance of the resulting copolymer may be impaired.
- Examples of the polymerization initiator used for the polymerization of the copolymer include conventionally known benzoyl peroxide, cumene hydroperoxide, tert-butyl peroxide, diisopropyl.
- Peroxides such as oral pyrpercarbonate, di-tert-butyl peroxide, tert-butyl peroxybenzoate, inorganic peroxides such as potassium persulfate, sodium persulfate, ammonium persulfate, 2, 2 Radical polymerization initiators such as azo compounds such as —azobisisobutyronitrile, 2,2-azobis (2-methylpropionamidine) dihydrochloride, 4,4-azobis (4-cyananopentanoic acid) Among them, an azo compound can be preferably used.
- the blending amount of the radical initiator is not particularly limited, but generally it is preferably in the range of 0.005 to 0.1 mol% with respect to the total amount of the vinyl monomers (A
- the polymerization temperature is preferably in the range of 20 to 703 ⁇ 4, particularly 25 to 55 ° C. When the polymerization temperature is lower than the above range, the polymerization rate is low, and when the polymerization temperature is higher than the above range, gelation or the like Is not preferable.
- the polymerization time varies depending on the compositions and amounts of the vinyl monomers (A) and (B), but is generally in the range of 0.5 to 144 hours, particularly 2 to 48 hours.
- the gas barrier resin preferably used in the present invention 5000 to 1 50,000, is especially preferred having a number average molecular weight of 10000 to 1 00000.
- an ether bond is formed on carbon that forms a double bond between the carboxyl group-containing polymer (C) and nitrogen.
- a compound (D) containing two ring structures (d) containing oxygen in the ether bond, wherein the carboxyl group of the carboxyl group-containing polymer (C) and the ring of the compound (D) A gas barrier resin in which a crosslinked structure is formed by the reaction of the structure (d) can be suitably used.
- the force lpoxyl group of the carboxyl group-containing polymer (C) reacts with the ring structure (d) of the compound (D) to form an amide ester, and an amide ester bond is formed at the cross-linked portion.
- gas barrier resin exhibits excellent gas barrier properties.
- the side chain force Lupoxyl group has a high hydrogen bonding property and a strong cohesive force to form a basic structure with excellent gas barrier properties. Can do.
- An amide ester bond which is a structure effective for gas barrier properties, can be formed by a reaction between a carboxyl group as a polymer side chain and a ring structure (d) of a compound (D) as a crosslinking component.
- carboxyl group-containing polymer (C) examples include, but are not limited to, a homopolymer or a copolymer of a monomer having a carboxyl group such as polyacrylic acid, polymethacrylic acid, polymaleic acid, polyitaconic acid, acrylic acid-methacrylic acid copolymer.
- examples thereof include polymers and partially neutralized products thereof, and it is preferable to use polyacrylic acid or polymethacrylic acid.
- the partially neutralized product of the polycarboxylic acid polymer can be partially neutralized with a metal hydroxide salt such as sodium hydroxide or potassium hydroxide, ammonia or the like.
- the degree of neutralization of the partially neutralized product is not particularly limited, but is preferably 30% or less in terms of a molar ratio to the carboxyl group. If it is more than the above range, the hydrogen bonding property of the carboxyl group is lowered and the gas barrier property is lowered.
- the weight average molecular weight of the polycarboxylic acid polymer is not particularly limited, but is preferably in the range of 5 0 00 to 1 5 0 0 0 0 0 0, particularly 1 0 0 0 0 0 to 1 0 0 0 0 0 0. .
- the ring structure that does not contain oxygen in the ether bond as shown in the following formula (2) does not cause a cross-linking reaction to form an amide ester bond with the polycarboxylic acid polymer.
- a single ring structure cannot be bridged.
- Three or more are not preferable because the structure of the cross-linking points spreads three-dimensionally and a dense cross-linking structure with excellent gas barrier properties cannot be formed.
- the compound (D) used in the gas barrier material of the present invention contains two ring structures (d) as described above, and such ring structures may have two identical ring structures or different ring structures. However, it is preferable that at least one is an oxazoline group or a derivative thereof.
- Examples of the compound (D) having two such ring structures (d) include, but are not limited to, 2,2′-bis (2-oxazoline), 2,2′-bis (4-methyl-1,2-oxazoline) ), 2,2'-bis (5-methyl-2-oxazoline), 2,2 'monobis (5,5, monodimethyl-2-oxazoline), 2,2'-bis (4, 4, 4', 4 '-Tetramethyl-2-oxazoline), 2, 2'- p-phenylene bis (2-ox) PT / JP2006 / 307279
- the cross-linked portion formed by the strong lpoxyl group-containing polymer (C) and the compound (D) is formed by an aliphatic chain. Therefore, among the compounds (D), those having no aromatic ring can be preferably used, and 2,2′-bis (2-oxazoline) can be particularly preferably used.
- the gas barrier material of the present invention is a step before ionic crosslinking, PT / JP2006 / 307279
- a multilayer gas barrier precursor in which a coating solution made of a resin having a carboxyl group corresponding to an acid value of not less than 5 8 O mg K O HZ g is applied to a plastic substrate and then heated to form a crosslinked structure;
- the gas barrier precursor thus obtained can be obtained by ion crosslinking, and it is particularly preferable to form the gas barrier precursor using a coating solution.
- a coating liquid can be prepared by dissolving or dispersing a gas barrier resin obtained by solution polymerization of a monomer (B) in a solvent and, if necessary, adding an acid catalyst or an inorganic dispersion.
- the gas barrier resin is preferably contained in the coating solution at a solid content concentration of 3 to 80% by weight, particularly 5 to 50% by weight.
- a solid content concentration 3 to 80% by weight, particularly 5 to 50% by weight.
- the amount is less than the above range, it is difficult to form a coating film having a required film thickness, and sufficient gas barrier properties may not be imparted.
- the amount is larger than the above range, the viscosity of the coating solution is too high and the coatability is poor.
- the coating liquid contains an acid catalyst for accelerating the reaction of the functional groups in the vinyl monomer (B), which is a raw material monomer of the gas barrier resin, with each other or with a carboxyl group. This makes it possible to efficiently introduce the cross-linking structure unique to the above-described gas barrier resin of the present invention into the coating film.
- the acid catalyst for promoting acid examples include acetic acid, propionic acid, ascorbic acid, benzoic acid, hydrochloric acid, p-toluenesulfonic acid, monovalent acid such as alkylbenzenesulfonic acid, sulfuric acid, sulfurous acid, phosphoric acid, phosphorous acid, Examples of the divalent or higher acid include hypophosphorous acid, polyphosphoric acid, pyrophosphoric acid, maleic acid, itaconic acid, fumaric acid, and polycarboxylic acid. Monovalent acids are particularly preferable. Toluenesulfonic acid is preferably used.
- the acid catalyst is preferably used in the range of 1 to 10 O mm o I, particularly 2.5 to 80 mm o I with respect to the gas barrier resin 1 O O g in the coating liquid.
- a divalent or higher acid medium it is preferable to use a value obtained by dividing the above range by the valence n.
- the acid medium is just before coating on the substrate in view of the storage stability (viscosity) of the coating solution. It is preferable to mix with other components.
- the coating liquid contains, as necessary, known blending agents such as surfactants, fillers, coloring agents, additives, and the like. Can be formulated in a prescription.
- the carboxyl group-containing polymer described above is used.
- a gas barrier precursor subjected to reion crosslinking can be produced by heating at a temperature of 110 to 170 ° C for 5 seconds to 5 minutes.
- Each component (D) may be dissolved in water, or may be prepared by mixing an aqueous solution of each component.
- a solvent such as alcohol or a mixed solvent such as hydroalcohol can also be used.
- the above-described acid catalyst may be added to promote the reaction between the carboxyl group of the carboxyl group-containing polymer (C) and the ring structure (d) of the compound (D).
- the above-mentioned inorganic dispersions that can be blended to improve gas barrier properties, blended with known blending agents such as surfactants, fillers, coloring agents, additives, etc., if necessary, with conventional formulations. May be.
- the substrate is immersed in the coating solution, or the coating solution is applied by a method such as slush coating, spin coat, roll coating, spray coating or the like. be able to. Although not generally necessary, it is of course possible to apply the coating to the substrate over a number of times if desired. If the plastic substrate has no or little wettability to the coating solution, the surface of the plastic substrate to which the coating solution is applied is subjected to corona discharge treatment, ozone treatment, short wavelength ultraviolet irradiation treatment, flame treatment, etc. Also good.
- the drying and cross-linking of the coating liquid of the present invention varies depending on the coating liquid application amount, etc., but at a temperature of 1100 to 20.00 3 ⁇ 4, particularly at a temperature of 1100 to 1700 ° C.
- the heat treatment can be performed for a short time of 0 seconds to 30 minutes, particularly 5 seconds to 5 minutes. For this reason, the effect of heating the coating on the substrate is small, and the productivity is excellent.
- the heating method is not particularly limited, and heat treatment in a dry atmosphere such as an oven or heat treatment by contact with a hot nozzle may be performed.
- a dry atmosphere such as an oven or heat treatment by contact with a hot nozzle
- the solvent can be evaporated by blowing hot air with a dryer or irradiating with infrared rays to form a dry film, followed by heat treatment. Further, after drying and evaporating the solvent from the coating film, it may be further exposed to a temperature atmosphere in the range of 70 to 140 ° C. for a period of 10 seconds to 7 days. Good.
- the gas barrier material according to the present invention has a strong ruxyl group corresponding to an amount of at least an acid value of 33 O mg KOH g among the unreacted residual carboxyl groups in the gas barrier precursor thus formed. It can be obtained by crosslinking.
- a crosslinking agent having a thione polar group for example, primary, secondary, tertiary amino groups, quaternary organic ammonium groups, amide groups, etc. It is also possible to use a cationic monomer having JP2006 / 307279
- the polyvalent metal compound that can be used for the metal-ion cross-linking of the gas / clear material of the present invention can be contained in water and can cross-link with a carboxyl group.
- the polyvalent metal ion is not particularly limited as long as the carboxyl group of the resin can be cross-linked, and is about 2 or more (particularly 2 to 3), preferably magnesium ion Mg 2 + , calcium ion C a Divalent metal ions such as 2 + can be used.
- the metal ions, alkaline earth metal (magnesium M g, calcium C a, strontium S r, barium B a, etc.), Group 8 of the periodic table metals (iron F e, Ruteni ⁇ beam R u etc.) of the Periodic Table 1 Examples include Group 1 metals (such as copper Cu), Periodic Table 1 Group 2 metals (such as zinc Zn), Periodic Table 1 Group 3 metals (such as aluminum AI), and the like.
- Examples of the divalent metal ions magnesium ions M g 2 +, calcium ions C a 2 +, strike opening Nchiumu ion S r 2 +, carbonochloridate potassium ion B a 2 +, copper ions C u 2 +, zinc ions Z n 2 + etc. can be exemplified, and as the trivalent metal ions, aluminum ions AI 3 +, iron ions F e 3 + ions, such as may be exemplified.
- the above metal ions can be used alone or in combination.
- water dissociable metal compound that is the ion source of the polyvalent metal ion examples include salts of metals constituting the metal ion, such as halides (eg, chlorides such as magnesium chloride and calcium chloride), hydroxides, and the like.
- halides eg, chlorides such as magnesium chloride and calcium chloride
- hydroxides and the like.
- Products eg, magnesium hydroxide, calcium hydroxide, etc.
- oxides eg, magnesium oxide, calcium oxide, etc.
- carbonates eg, magnesium carbonate, calcium carbonate
- inorganic acid salts eg, perhalogenates (Eg, perchlorates such as magnesium perchlorate, calcium perchlorate, etc.), sulfates (eg, magnesium sulfate, sulfate, etc.), sulfites, nitrates (eg, magnesium nitrate, calcium nitrate, etc.), Hypophosphite, phosphite, phosphate (eg, magnesium phosphate, potassium phosphate ), Organic acid salts such as carboxylates (for example, acetates such as magnesium acetate and calcium acetate), and the like.
- These metal compounds can be used alone or in combination of two or more. Of these compounds, the above-mentioned metal halides and hydroxides are preferable.
- the process (i i i) is a process that brings about an aging effect after the processes (i) to (i i), and enables a reduction in the time of the processes (i) to (i i).
- the treated water used in any of the above treatments (i) to (iii) may be cold water ⁇ , so that the water containing the polyvalent metal compound is likely to act on the gas barrier precursor.
- the temperature of the water containing the compound is 20 ° C. or higher, preferably 35 ° C. or higher, particularly 40 to 100 ° C.
- the processing time can be set to a certain extent and can be performed under mild processing conditions, in the case of (i) to (ii), it is preferable to perform the processing for 3 seconds or more, particularly 10 seconds to 4 days, In the case of (iii), (i) to (ii) are treated for 0.5 seconds or more, especially 1 second to 1 hour, and then an atmosphere treatment in which a gas barrier precursor is placed under high humidity for 1 hour or more. In particular, the treatment is preferably performed for 2 hours to 14 hours.
- the treatment temperature is 100 ° C. or higher, particularly 120 ° C. to 140 ° C., and the treatment temperature is 1 second or longer, especially 3 seconds to 120 minutes. Do.
- a gas barrier precursor formed from a coating solution in which a polyvalent metal compound is dissolved or dispersed in advance may be similarly treated with water or water containing a polyvalent metal compound.
- the polyvalent metal compound is preferably 0.125 mm o IZL or more, more preferably 0.5 mm o IZL or more, in terms of metal atom in water, More preferably, it is at least 2.5 mm o IZL. Multivalent gold The higher the genus compound concentration, the better.
- the water containing the polyvalent metal compound is preferably neutral to alkaline.
- a gas-containing precursor composed of a resin having a strong lpoxyl group corresponding to an acid value of 58 Omg KOH / g or more is used as a polyvalent compound.
- the acid value corresponds to an amount of 33 Omg KOH g or higher in a short time of 10 seconds or less, especially 1 to 5 seconds.
- the concentration is low, making it difficult to form a predetermined amount of metal ion cross-linked structure in a short time as described above.
- the concentration is too high, the concentration of the ion is too high, and diffusion of ions into the gas barrier precursor is difficult to occur.
- the pH of water is less than 10, the degree of dissociation of free carboxyl groups of the gas barrier precursor when water permeates is not sufficient, so that a metal ion cross-linked structure is formed between the carboxyl groups in a short time as described above. It becomes difficult to form.
- the pH is higher than 13, the load applied to the base material used for the gas-pariatic precursor or coating is too large.
- the immersion treatment in which a gas barrier precursor is immersed in water containing a polyvalent metal is preferable because crosslinking in the shortest time is possible.
- the gas barrier material of the present invention may contain an inorganic dispersion in addition to the resin having a force lpoxyl group corresponding to an acid value of 58 OmgKOHZg or more.
- Such an inorganic dispersion has a function of blocking moisture from the outside and protecting the gas barrier resin, and can further improve the gas barrier property and water resistance.
- the inorganic dispersion may have any shape such as a spherical shape, a needle shape, a layer shape, etc., but has a gas barrier property.
- a resin that has wettability to the resin and that disperses well in the coating solution is used.
- a silicate compound having a layered crystal structure, such as water-swellable mica and clay is preferably used.
- These inorganic dispersions preferably have an aspect ratio of 30 or more and 500 or less in that they are dispersed in layers and block moisture.
- the content of the inorganic dispersion should be 5 to 100 parts by weight with respect to 100 parts by weight of the resin having a carboxyl group corresponding to an acid value of 58 O mg KOHZ g or more. Is preferred.
- the packaging material having a layer made of the gas barrier material of the present invention is, as described above, a gas barrier material single layer formed by ion-crosslinking a resin having a carboxyl group corresponding to an acid value of 58 O mg KOH / g or more. Alternatively, it can be obtained by forming the gas barrier material on the surface of the plastic substrate or between the plastic layers.
- thermoformable thermoplastic resin As a plastic substrate, a film, a sheet, a bottle, a cup, a tray, or the like manufactured from a thermoformable thermoplastic resin by means of extrusion molding, injection molding, blow molding, stretch blow molding, or press molding.
- a gas barrier material can be formed on a plastic substrate of any shape such as a shape or a can shape to form a packaging material.
- Suitable examples of the resin constituting the plastic substrate include low, medium or high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-butene monocopolymer, ionomer, ethylene— Polyolefin copolymers such as vinyl acetate copolymer, ethylene vinyl alcohol copolymer: Polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate Z isophthalate, polyester such as polyethylene naphthalate: nylon 6, nylon 6, 6, Nylon 6, 10, Polyamide such as metaxylylene adipamide; polystyrene, styrene monobutadiene block copolymer, styrene monoacrylonitrile copolymer, styrene monobutadiene monoacrylonitrile copolymer (ABS resin Styrene copolymers such as: Vinyl chloride copolymers such as polyvinyl chloride and vinyl chloride-vin
- thermoplastic resins may be used alone or exist in the form of a blend of two or more, and the plastic substrate may be in a single layer configuration or, for example, simultaneous melt extrusion or other laminating. It may be a laminated structure of two or more layers by Chillon.
- thermoplastic resin that can be melt-molded may contain one or more additives such as pigments, antioxidants, antistatic agents, ultraviolet absorbers, and lubricants as desired.
- additives such as pigments, antioxidants, antistatic agents, ultraviolet absorbers, and lubricants as desired.
- the total amount per part by weight can be added in the range of 0.001 to 5.0 parts.
- fiber reinforcement such as glass fiber, aromatic polyamide fiber, carbon fiber, pulp and cotton linter, or powder reinforcement material such as carbon black and white carbon, or glass Flakes, aluminum flakes and other flaky reinforcing materials can be blended in an amount of 2 to 150 parts by weight as a total amount per 100 parts by weight of the thermoplastic resin.
- the total amount may be 5 to 100 parts by weight according to a formulation known per se.
- scaly inorganic fine powder such as water-swellable mica, clay, etc.
- scaly inorganic fine powder is added in an amount of 5 to 100 parts by weight as a total amount per 100 parts by weight of the thermoplastic resin. Even if blended according to a formulation known per se, there is no problem.
- the aforementioned gas barrier material can be provided on the final film, sheet, or container surface, or the coating can be provided in advance on a preform for molding into a container.
- preforms include bottomed or bottomless cylindrical parisons for biaxial stretch blow molding, pipes for plastic cage molding, sheets for vacuum molding, pressure molding, plug assist molding, Or a heat seal lid, a film for bag making, etc. can be mentioned.
- the gas barrier material preferably has a thickness of generally 0.1 to 1 O jU m, particularly 0.5 to 5 m. If this thickness falls below the above range, acid On the other hand, even if the thickness force ⁇ the above range is exceeded, there is no particular advantage, and the cost of the packaging material tends to be disadvantageous.
- this gas barrier material can be provided as a single layer as the inner surface of the container, the outer surface of the container, and the intermediate layer of the laminate, and as multiple layers, at least the inner and outer surfaces of the container or the inner and outer surfaces of the container One can be provided as an intermediate layer of the laminate.
- Molding from the coated preform into the final container can be carried out under conditions known per se such as biaxial stretch blow molding, plug ciss ⁇ molding. Also, a film or sheet provided with a coating layer is bonded to another film or sheet to form a laminate, and this laminate is combined with a heat seal lid, a bouch, or a preform for container molding. It can also be used.
- an anchor layer When used as a packaging material, an anchor layer may be provided on at least one side of the layer made of the gas barrier material.
- the adhesion between the layers is improved, and the mechanical strength of the container and the flexibility of the laminate can be further increased.
- a layer made of a gas barrier material may be formed via an anchor layer, and when used for an intermediate layer of the laminate, a gas barrier is used.
- An anchor layer may be formed on at least one side of the material layer.
- the anchor material may be formed from various polymers such as urethane, epoxy, acrylic, and polyester. It is particularly preferable to contain a urethane polymer.
- the anchor material may be composed of a main agent and a curing agent, and may be a precursor in a state where the curing reaction has not been completed, or may be in a state where an excessive amount of the curing agent is present.
- urethane it is mainly composed of polyol components such as polyester polyol and polyether polyol, and one component of polyisocyanate. Polyisocyanate components may be present so that
- the thickness of the anchor layer is preferably from 0.01 to 1 O jUm, more preferably from 0.05 to 5 m, and even more preferably from 0.1 to 3 m. When this thickness is less than the above range, the effect of the anchor layer on adhesion is manifested. On the other hand, even if the thickness exceeds the above range, there is no particular advantage, and the cost of the packaging material tends to be disadvantageous.
- the acid value is the number of mg of potassium hydroxide required to neutralize the acidic free functional group contained in 1 g of resin.
- the acid value of the resin was calculated by a conventional method based on alkali neutralization titration. That is, the resin was dissolved in an ethanol solution and titrated with an ethanolic 0.1N potassium hydroxide standard solution using a 1% phenolphthalein ethanol solution as an indicator.
- Liion crosslinking is formed by salt conversion of the carboxyl group.
- the acid value involved in ionic crosslinking is calculated by measuring with a Fourier transform infrared spectrophotometer using a gas-par material after ionic crosslinking.
- the characteristic absorption bands of carboxylic acids are around 920 to 970 cm— 1, near 1 700 to 1 7 10 cm— 1, around 2500 to 3200 cm— 1 , and 1 770 to 1 800 for acid anhydrides.
- the cm one "at a wavelength of around 1 are known.
- the characteristic absorption band of the carboxylic acid salts are known to be in the wavelength of the near-dated 1 480 ⁇ 1 630 cm- 1.
- Peak height of X ii) ⁇ [peak height of + peak height of ( ⁇ )] (1)
- the peak heights of ( ⁇ ) and (ii) refer to the difference in absorbance between the point where the skirt of this peak overlaps the baseline and the peak apex.
- Acid value involved in ionic cross-linking acid value of resin X salt conversion rate of carboxyl group ... (2) If the amount of acidic functional groups other than carboxylic acid cannot be ignored, when calculating the salt conversion rate The result quantified by molar concentration is used.
- Measuring method Single reflection method using germanium prism
- the oxygen permeation amount of the obtained gas barrier precursor and gas barrier material was measured using an oxygen permeation amount measuring device (OX-TRAN2Z20, manufactured by Modern Control).
- the measurement conditions are an ambient temperature of 25 ° C and a relative humidity of 80%.
- the above coating solution is biaxially stretched with a thickness of 12 m using a bar coater. It was applied to a lenret phthalate film ( ⁇ ).
- the above-mentioned film after coating is heat-treated with a gas oven under the conditions of a peak temperature of 170 ° C and a peak temperature holding time of 10 seconds, and has a 2 m thick coating layer (ii) as shown in FIG.
- One film ( ⁇ ⁇ i) was used.
- the film was immersed in tap water warmed to 50 ° C for 3 days. After taking out from water and drying, the oxygen permeation amount and acid value of the film were measured.
- the gas barrier material was treated in the same manner as in Example 1, except that calcium chloride was added to tap water and the calcium ion concentration was adjusted to 2. O Ommo I ZL for 1 day in Example 1. Got.
- a gas barrier material was obtained in the same manner as in Example 1 except that calcium chloride was added to tap water and the calcium ion concentration was adjusted to 3.75 mmo I / L in Example 1. It was.
- Example 1 the p-toluenesulfonic acid was added so as to be 30 mm o I to the resin 1 00 g, were treated at the peak ⁇ 1 40 ° C by a gas oven with the addition of calcium chloride in tap water
- a gas barrier material was obtained in the same manner as in Example 1 except that it was dipped in treated water adjusted to a calcium ion concentration of 3.75 mm I.
- Example 1 a gas barrier material was obtained by the same method as in Example 1 except that it was immersed in tap water for 8 hours.
- Example 1 acrolein was "I 3.4 g (0.24 mol), carboxyl group-containing resin was 54.8 g (0.76 mol I), and retorted in tap water at 120 ° C for 30 minutes.
- a gas barrier material was obtained in the same manner as in Example 1 except that (Example 7).
- Example 1 16.8 g (0.30 mol) of acrolein, carboxy
- the gas barrier material was obtained in the same manner as in Example 1 except that the ru-group-containing resin was changed to 50.5 g (0.7 Omo I) and treated with tap water at 120 ° C. for 30 minutes.
- Example 8 16.8 g (0.30 mol) of acrolein, carboxy
- the gas barrier material was obtained in the same manner as in Example 1 except that the ru-group-containing resin was changed to 50.5 g (0.7 Omo I) and treated with tap water at 120 ° C. for 30 minutes.
- Example 1 a gas pear material was obtained in the same manner as in Example 1 except that it was immersed in tap water adjusted to contain 1,2-diaminoethane 0.33 mmol IZ.
- Example 1 In Example 1, 5.6 g (0.1 mol I) of acrolein, 60.2 g (0.7 mol I) of methacrylic acid as a carboxyl group-containing resin, and 23.2 g (0.2 mol I) of maleic acid
- the gas barrier material was obtained in the same manner as in Example 1, except that calcium chloride was added to tap water and the immersion treatment was carried out with treated water adjusted to a calcium ion concentration of 3.75 mmo IL. .
- Dextrin (product name: Amy co) using TEMPO hornworm medium (2. 2, 6, 6— Tetramethylpiperidiae 1-Oxyl, manufactured by Tokyo Kasei Co., Ltd.) to selectively oxidize only the primary hydroxyl group at C 6 position.
- TEMPO hornworm medium (2. 2, 6, 6— Tetramethylpiperidiae 1-Oxyl, manufactured by Tokyo Kasei Co., Ltd.
- a 5% by weight gas barrier resin solution was obtained.
- polycarpoimide resin with a solid content of 40% by weight
- the coating solution was applied to a biaxially stretched polyethylene terephthalate film (i) having a thickness of 12 / m by a bar coater.
- the film after coating was heat-treated with a gas oven under conditions of a re-peak temperature of 140 ° C and a peak temperature holding time of 10 seconds, and a polyethylene terephthalate film (iii) having a coating layer (ii) with a thickness of 2 mm. )
- the film was immersed in tap water warmed to 50 ° C for 3 days. After taking out from water and drying, the oxygen permeation amount and acid value of the film were measured.
- the coating solution was applied to a biaxially stretched polyethylene terephthalate film (i) having a thickness of 12 / m by a bar coater.
- the coated film was heat-treated with an electric oven at a peak temperature of 140 ° C and a peak temperature holding time of 1980 seconds to form a coating layer (ii) having a thickness of 2 jum.
- a ting film (iii) was obtained.
- the above film (iiii) was immersed in tap water heated to 50 ° C for 1 mm. After taking out from the hot water and drying, the oxygen permeation amount and acid value of the film were measured.
- Polyester polyol (manufactured by Toyobo Co., Ltd., Byron 200) was dissolved in a mixed solvent of ethyl acetate Z-methylethyl ketone (60-40 by weight) to give 20% by weight.
- polyisocyanate manufactured by Sumika essence Urethane Co., Ltd., Sumidur N 3300
- di-n-ptyltin dilaurate manufactured by Wako Pure Chemical Industries, Ltd.
- carboxyl group-containing polymer (C) polyacrylic acid (Nippon Pure Chemicals AC-1O LHP) was used and dissolved in methanol to obtain a solution (c) having a solid content of 15%. 7279
- Example 11 The solution (b) of Example 11 is added to the solution (c) so that the amount becomes 10% by weight with respect to the polymer (C) having a strong lpoxyl group, and the coating solution (d) having a solid content of 8% with methanol is added. )
- the coating solution (d) is applied to the polyethylene terephthalate film having the anchor layer (ix) with a bar coater, and then heat-treated with an electric oven at a peak temperature of 140 ° C and a peak temperature holding time of 1 80 seconds. Then, a coating layer (i ⁇ ) having a thickness of 2 m and a coating area of 450 cm 2 was formed, and a coating film (X) as shown in FIG. 3 was obtained.
- Calcium chloride is added to tap water, and the calcium ion concentration adjusted to ⁇ HI 2.76 using force, calcium hydroxide and sodium hydroxide is 94 mm o I ZL.
- the film (X) was soaked at 82 ° C for 5 seconds to obtain a gas barrier material.
- the metal ion concentration was quantified using an Inductively Coupled Plasma emission spectrometer (I CAP-88 manufactured by Jalerash, Japan).
- Example 1 except that the film (X) was immersed in the supernatant of ⁇ 1 2 ⁇ 33 and the calcium ion concentration of 469 mmo I ZL at a liquid temperature of 35 ° C for 10 seconds in Example 12. The same procedure as in No. 2 was performed to obtain a gas spear material.
- Example 12 except that the film (X) is immersed in the supernatant of pH 1 1.21, calcium ion concentration 1 875 mm o I ZL at a liquid temperature of 94 ° C for 10 seconds. 1 Treated in the same manner as 2 to obtain a gas barrier material.
- Example 1 solution in (c) on a carboxyl group-containing polymer (C) was added a solution (b) so that 1 5 weight 0/0, 8% solids of Coating solution with methanol ( d) and the fact, and p HI 1. 82, the supernatant of the calcium ion concentration is 4 69 mm o I Bruno L, liquid temperature of 50. .
- the gas barrier material was obtained in the same manner as in Example 12 except that the film was soaked in the film (X) for 5 seconds.
- Example 1 6 In Example 1 2, the supernatant was adjusted to pH HI 0.26 using sodium hydroxide and magnesium chloride hexahydrate added to tap water so that the magnesium ion concentration was 180 mmo I ZL.
- a gas barrier material was obtained in the same manner as in Example 12 except that the film (X) was soaked at 96 ° C. for 10 seconds.
- calcium ion is contained in tap water which is a diluting solution in an amount of 0.60 mmo I, it is not an effective amount in a short time of 10 seconds, so the effect in this example is due to magnesium ion.
- the coating layer (ii) is the lower layer, a urethane adhesive (i V :) having a thickness of 2 m, a biaxially stretched nylon film (v) having a thickness of 15 mm, and a urethane having a thickness of 2 m.
- An adhesive (V i) and an unstretched polypropylene film (V ii) having a thickness of 70 ⁇ m were sequentially laminated to obtain a laminate (V iii) having a layer structure as shown in FIG.
- Example 17 a laminate was obtained in the same manner as in Example 17 except that the coating layer of Example 11 was used.
- Example 2 In Example 1, 19.6 g (0.35 mol) of acrolein and 46.9 g (0.65 mol I) of a carboxyl group-containing resin were used. 1 Retort treatment in tap water at 20 ° C for 30 minutes A gas barrier material was obtained in the same manner as in Example 1 except that. (Comparative Example 2)
- Example 1 a gas barrier material was obtained in the same manner as in Example 1 except that it was immersed in tap water for 6 hours.
- the gas barrier material was obtained in the same manner as in Example 11 except that it was immersed in tap water for 35 minutes in Example 11.
- Example 1 calcium chloride was further added to the coating solution so as to be 20 mmo I with respect to 1 OO g of resin, and the same treatment as in Example 1 was performed except that the immersion treatment was not performed.
- TJP2006 / 307279
- Example 1 In Example 2, except that the supernatant of ⁇ ⁇ 9 ⁇ 52 and calcium ion concentration of 469 mmo I ZL is treated by immersing the above film (X) for 10 seconds at a liquid temperature of 80 ° C. It processed by the same method and obtained the gas barrier material.
- Example 1 Example 1 except that the supernatant of pH I 1.07 and calcium ion concentration 47 mm o I ZL was treated by immersing the above film (X) for 10 seconds at a liquid temperature of 60 ° C.
- the gas barrier material was obtained by the same method as in 2.
- Example 1 Example 2 except that the supernatant of pH 1 3.50 and calcium ion concentration of 469 mmo I / L is treated by immersing the film (X) for 10 seconds at a liquid temperature of 80 ° C. 1 Treated in the same manner as 2 to obtain a gas barrier material.
- Example 1 2 Example 1 2 except that the supernatant of pH 1 1.01 and calcium ion concentration 2345 mm o I ZL was treated by immersing the above film (X) at a liquid temperature of 80 ° C. for 10 seconds.
- the gas barrier material was obtained by processing in the same manner.
- Example 1 Example 2 except that p HI 1 ⁇ 18 and calcium ion concentration 94 mm o I ZL supernatant were treated by immersing the above film (X) at 30 ° C for 10 seconds. 1 Treated in the same manner as 2 to obtain a gas barrier material.
- Table 1 shows the measurement results of the acid value of the resins obtained in the above Examples and Comparative Examples, the amount of acid catalyst, the immersion treatment conditions, the acid value involved in ion crosslinking, and the oxygen permeation amount.
- the DH measurement temperature is room temperature (21 ° C). Add Ca to the coating solution and immerse it in the coating solution. Not processing
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Abstract
Description
Claims
Priority Applications (5)
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JP2007510585A JP5256487B2 (ja) | 2005-03-30 | 2006-03-30 | ガスバリア材及びその製造方法 |
US11/910,397 US7956133B2 (en) | 2005-03-30 | 2006-03-30 | Gas-barrier material and a method of producing the same |
EP20060731227 EP1865020B1 (en) | 2005-03-30 | 2006-03-30 | Gas-barrier material and process for producing the same |
AU2006229439A AU2006229439A1 (en) | 2005-03-30 | 2006-03-30 | Gas-barrier material and process for producing the same |
CN2006800108382A CN101151305B (zh) | 2005-03-30 | 2006-03-30 | 阻气材料及其制造方法 |
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US (1) | US7956133B2 (ja) |
EP (1) | EP1865020B1 (ja) |
JP (1) | JP5256487B2 (ja) |
KR (1) | KR101263085B1 (ja) |
CN (1) | CN101151305B (ja) |
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WO (1) | WO2006104257A1 (ja) |
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JP2006274199A (ja) * | 2005-03-30 | 2006-10-12 | Toyo Seikan Kaisha Ltd | ガスバリア性樹脂、これを用いて成るガスバリア材、コーティング液、包装材及びガスバリア材の製造方法 |
WO2008084802A1 (ja) * | 2007-01-11 | 2008-07-17 | Toyo Seikan Kaisha, Ltd. | ガスバリア材形成用組成物、ガスバリア材及びその製造方法並びにガスバリア性包装材 |
JP2008169303A (ja) * | 2007-01-11 | 2008-07-24 | Toyo Seikan Kaisha Ltd | ガスバリア材形成用組成物、ガスバリア材及びその製造方法並びにガスバリア性包装材 |
JP2008195787A (ja) * | 2007-02-09 | 2008-08-28 | Toyo Seikan Kaisha Ltd | ガスバリア材形成用組成物、ガスバリア材及びその製造方法並びにガスバリア性包装材 |
JP2008280452A (ja) * | 2007-05-11 | 2008-11-20 | Toyo Seikan Kaisha Ltd | ガスバリア材形成用組成物、ガスバリア材及びその製造方法並びにガスバリア性包装材 |
JP2010143591A (ja) * | 2008-12-16 | 2010-07-01 | Kuraray Co Ltd | スパウト付きパウチ |
US20120046405A1 (en) * | 2009-05-06 | 2012-02-23 | Inmat Inc. | Barrier coatings stabilized with multi-valent metal cations |
US20120053281A1 (en) * | 2009-05-06 | 2012-03-01 | Feeney Carrie A | Barrier coatings post-formation treated with multi-valent metal cations |
JP5151482B2 (ja) * | 2005-09-28 | 2013-02-27 | 東洋製罐株式会社 | ガスバリア材及びその製造方法並びにガスバリア性包装材 |
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WO2009041500A1 (ja) * | 2007-09-27 | 2009-04-02 | Toyo Seikan Kaisha, Ltd. | 耐ブロッキング性に優れたガスバリア材及びその製造方法 |
WO2011040540A1 (ja) * | 2009-10-02 | 2011-04-07 | 東洋製罐株式会社 | ガスバリア性積層体及びその製造方法 |
KR20140045930A (ko) * | 2011-03-29 | 2014-04-17 | 썬 케미칼 비.브이. | 폴리우레탄을 포함하는2-코트 차단시스템 |
US20150059295A1 (en) * | 2012-04-27 | 2015-03-05 | Mitsubishi Gas Chemical Company, Inc. | Epoxy resin curing agent, epoxy resin composition, and gas-barrier adhesive and gas-barrier laminate |
JP6934767B2 (ja) * | 2017-07-25 | 2021-09-15 | 伯東株式会社 | 超音波伝達効率向上組成物、超音波診断用ゲル組成物及び超音波撮影方法 |
EP4010266A4 (en) * | 2019-08-05 | 2023-08-16 | Amcor Flexibles North America, Inc. | STAIN RESISTANT WRAPPING FILM FOR AUTOCLAVE APPLICATIONS |
CN113234298A (zh) * | 2021-06-10 | 2021-08-10 | 江苏宝源高新电工有限公司 | 一种高性能的ldpe离子聚合物及其制备方法 |
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- 2006-03-30 JP JP2007510585A patent/JP5256487B2/ja not_active Expired - Fee Related
- 2006-03-30 AU AU2006229439A patent/AU2006229439A1/en not_active Abandoned
- 2006-03-30 EP EP20060731227 patent/EP1865020B1/en not_active Ceased
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Also Published As
Publication number | Publication date |
---|---|
CN101151305A (zh) | 2008-03-26 |
US7956133B2 (en) | 2011-06-07 |
JPWO2006104257A1 (ja) | 2008-09-11 |
CN101151305B (zh) | 2011-09-14 |
US20090274918A1 (en) | 2009-11-05 |
EP1865020B1 (en) | 2014-06-18 |
EP1865020A1 (en) | 2007-12-12 |
EP1865020A4 (en) | 2011-09-07 |
JP5256487B2 (ja) | 2013-08-07 |
KR101263085B1 (ko) | 2013-05-09 |
KR20080004543A (ko) | 2008-01-09 |
AU2006229439A1 (en) | 2006-10-05 |
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